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More logic for the AVR port

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3684 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2011-06-08 21:10:47 +00:00
parent 9801377f7d
commit 84f35843f2
24 changed files with 2742 additions and 52 deletions
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11
arch/avr/src/at90usb/Make.defs
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@ -42,10 +42,11 @@ HEAD_ASRC = at90usb_head.S
CMN_ASRCS = up_switchcontext.S CMN_ASRCS = up_switchcontext.S
CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \ CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
up_createstack.c up_doirq.c up_exit.c up_idle.c up_initialize.c \ up_createstack.c up_doirq.c up_exit.c up_idle.c up_initialize.c \
up_interruptcontext.c up_lowputs.c up_mdelay.c up_modifyreg8.c \ up_initialstate.c up_interruptcontext.c up_irq.c up_lowputs.c \
up_modifyreg16.c up_modifyreg32.c up_puts.c up_releasepending.c \ up_mdelay.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c \ up_puts.c up_releasepending.c up_releasestack.c \
up_sigdeliver.c up_udelay.c up_unblocktask.c up_usestack.c up_reprioritizertr.c up_schedulesigaction.c up_sigdeliver.c \
up_udelay.c up_unblocktask.c up_usestack.c
# Configuration-dependent common files # Configuration-dependent common files
@ -56,7 +57,7 @@ endif
# Required AT90USB files # Required AT90USB files
CHIP_ASRCS = at90usb_exceptions.S CHIP_ASRCS = at90usb_exceptions.S
CHIP_CSRCS = CHIP_CSRCS = at90usb_lowconsole.c at90usb_lowinit.c at90usb_serial.c at90usb_timerisr.c
# Configuration-dependent aT90USB files # Configuration-dependent aT90USB files

17
arch/avr/src/at90usb/at90usb_config.h
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@ -45,6 +45,23 @@
/************************************************************************************ /************************************************************************************
* Pre-processor Definitions * Pre-processor Definitions
************************************************************************************/ ************************************************************************************/
/* USARTs ***************************************************************************/
#undef HAVE_USART_DEVICE
#if defined(CONFIG_AVR_USART1)
# define HAVE_USART_DEVICE 1
#endif
/* Is there a serial console? There should be at most one defined. It
* could be on any USARTn (but n=1 only for the AT90USB).
*/
#if defined(CONFIG_USART1_SERIAL_CONSOLE) && defined(CONFIG_AVR_USART1)
# define HAVE_SERIAL_CONSOLE 1
#else
# undef CONFIG_USART1_SERIAL_CONSOLE
# undef HAVE_SERIAL_CONSOLE
#endif
/************************************************************************************ /************************************************************************************
* Public Types * Public Types

7
arch/avr/src/at90usb/at90usb_head.S
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@ -66,6 +66,7 @@
****************************************************************************/ ****************************************************************************/
.file "up_nommuhead.S" .file "up_nommuhead.S"
.global __start /* Entry point */
.global _sbss /* Start of .bss. Defined by ld.script */ .global _sbss /* Start of .bss. Defined by ld.script */
.global _ebss /* End of .bss. Defined by ld.script */ .global _ebss /* End of .bss. Defined by ld.script */
.global _sdata /* Start of .data section in RAM */ .global _sdata /* Start of .data section in RAM */
@ -248,9 +249,13 @@ __do_clear_bss:
cpc r27, r17 cpc r27, r17
brne .Lclearloop brne .Lclearloop
/* Perform any low-level initialization */
call up_lowinit
/* Now start NuttX */ /* Now start NuttX */
call os_start /* Start NuttX */ call os_start
jmp exit jmp exit
.endfunc .endfunc

169
arch/avr/src/at90usb/at90usb_lowconsole.c Normal file
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@ -0,0 +1,169 @@
/******************************************************************************
* arch/avr/src/at90usb/at90usb_lowconsole.c
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************/
/******************************************************************************
* Included Files
******************************************************************************/
#include <nuttx/config.h>
#include "at90usb_config.h"
#include <assert.h>
#include <debug.h>
#include <arch/irq.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
#include "at90usb_internal.h"
/******************************************************************************
* Private Definitions
******************************************************************************/
/* Select USART parameters for the selected console -- there is only USART1 */
#if defined(CONFIG_USART1_SERIAL_CONSOLE)
# define AVR_CONSOLE_BASE AVR_USART1_BASE
# define AVR_CONSOLE_BAUD CONFIG_USART1_BAUD
# define AVR_CONSOLE_BITS CONFIG_USART1_BITS
# define AVR_CONSOLE_PARITY CONFIG_USART1_PARITY
# define AVR_CONSOLE_2STOP CONFIG_USART1_2STOP
#else
# error "No CONFIG_USARTn_SERIAL_CONSOLE Setting"
#endif
/******************************************************************************
* Private Types
******************************************************************************/
/******************************************************************************
* Private Function Prototypes
******************************************************************************/
/******************************************************************************
* Global Variables
******************************************************************************/
/******************************************************************************
* Private Variables
******************************************************************************/
/******************************************************************************
* Private Functions
******************************************************************************/
/******************************************************************************
* Name: usart_setbaudrate
*
* Description:
* Configure the USART baud rate.
*
******************************************************************************/
#ifdef HAVE_USART_DEVICE
static void usart_setbaudrate(uintptr_t usart_base, uint32_t baudrate)
{
# warning "Missing logic"
}
#endif
/******************************************************************************
* Public Functions
******************************************************************************/
/******************************************************************************
* Name: usart_reset
*
* Description:
* Reset a USART.
*
******************************************************************************/
#ifdef HAVE_USART_DEVICE
void usart_reset(uintptr_t usart_base)
{
# warning "Missing Logic"
}
#endif
/******************************************************************************
* Name: usart_configure
*
* Description:
* Configure a USART as a RS-232 USART.
*
******************************************************************************/
#ifdef HAVE_USART_DEVICE
void usart_configure(uintptr_t usart_base, uint32_t baud, unsigned int parity,
unsigned int nbits, bool stop2)
{
# warning "Missing Logic"
}
#endif
/******************************************************************************
* Name: up_consoleinit
*
* Description:
* Initialize a console for debug output. This function is called very
* early in the intialization sequence to configure the serial console uart
* (only).
*
******************************************************************************/
void up_consoleinit(void)
{
# warning "Missing Logic"
}
/******************************************************************************
* Name: up_lowputc
*
* Description:
* Output one byte on the serial console
*
******************************************************************************/
void up_lowputc(char ch)
{
#ifdef HAVE_SERIAL_CONSOLE
# warning "Missing Logic"
#endif
}

103
arch/avr/src/at90usb/at90usb_lowinit.c Normal file
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@ -0,0 +1,103 @@
/**************************************************************************
* arch/avr/src/at90usb/at90usb_lowinit.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include <nuttx/config.h>
#include "at90usb_config.h"
#include "up_internal.h"
#include "at90usb_internal.h"
/**************************************************************************
* Private Definitions
**************************************************************************/
/**************************************************************************
* Private Types
**************************************************************************/
/**************************************************************************
* Private Function Prototypes
**************************************************************************/
/**************************************************************************
* Global Variables
**************************************************************************/
/**************************************************************************
* Private Variables
**************************************************************************/
/**************************************************************************
* Private Functions
**************************************************************************/
/**************************************************************************
* Public Functions
**************************************************************************/
/**************************************************************************
* Name: up_lowinit
*
* Description:
* This performs basic initialization of the USART used for the serial
* console. Its purpose is to get the console output availabe as soon
* as possible.
*
**************************************************************************/
void up_lowinit(void)
{
/* Initialize a console (probably a serial console) */
up_consoleinit();
/* Perform early serial initialization (so that we will have debug output
* available as soon as possible).
*/
#ifdef CONFIG_USE_EARLYSERIALINIT
up_earlyserialinit();
#endif
/* Perform board-level initialization */
up_boardinitialize();
}

664
arch/avr/src/at90usb/at90usb_serial.c Normal file
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@ -0,0 +1,664 @@
/****************************************************************************
* arch/avr/src/at90usb/at90usb_serial.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "at90usb_config.h"
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#include <semaphore.h>
#include <string.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include <nuttx/serial.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
#include "os_internal.h"
#include "at90usb_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/* Some sanity checks *******************************************************/
/* Is there at least one USART enabled and configured as a RS-232 device? */
#ifndef HAVE_USART_DEVICE
# warning "No USARTs enabled as RS-232 devices"
#endif
/* If we are not using the serial driver for the console, then we still must
* provide some minimal implementation of up_putc.
*/
#ifdef CONFIG_USE_SERIALDRIVER
/* Which USART with be tty0/console and which tty1? */
#if defined(CONFIG_USART1_SERIAL_CONSOLE)
# define CONSOLE_DEV g_usart1port /* USART1 is console */
# define TTYS0_DEV g_usart1port /* USART1 is ttyS0 */
#endif
/****************************************************************************
* Private Types
****************************************************************************/
struct up_dev_s
{
uintptr_t usartbase; /* Base address of USART registers */
uint32_t baud; /* Configured baud */
uint32_t csr; /* Saved channel status register contents */
uint8_t irq; /* IRQ associated with this USART */
uint8_t parity; /* 0=none, 1=odd, 2=even */
uint8_t bits; /* Number of bits (5, 6, 7 or 8) */
bool stopbits2; /* true: Configure with 2 stop bits instead of 1 */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static int up_setup(struct uart_dev_s *dev);
static void up_shutdown(struct uart_dev_s *dev);
static int up_attach(struct uart_dev_s *dev);
static void up_detach(struct uart_dev_s *dev);
static int up_interrupt(int irq, void *context);
static int up_ioctl(struct file *filep, int cmd, unsigned long arg);
static int up_receive(struct uart_dev_s *dev, uint32_t *status);
static void up_rxint(struct uart_dev_s *dev, bool enable);
static bool up_rxavailable(struct uart_dev_s *dev);
static void up_send(struct uart_dev_s *dev, int ch);
static void up_txint(struct uart_dev_s *dev, bool enable);
static bool up_txready(struct uart_dev_s *dev);
/****************************************************************************
* Private Variables
****************************************************************************/
struct uart_ops_s g_uart_ops =
{
.setup = up_setup,
.shutdown = up_shutdown,
.attach = up_attach,
.detach = up_detach,
.ioctl = up_ioctl,
.receive = up_receive,
.rxint = up_rxint,
.rxavailable = up_rxavailable,
.send = up_send,
.txint = up_txint,
.txready = up_txready,
.txempty = up_txready,
};
/* I/O buffers */
#ifdef CONFIG_AVR_USART1_RS232
static char g_usart1rxbuffer[CONFIG_USART1_RXBUFSIZE];
static char g_usart1txbuffer[CONFIG_USART1_TXBUFSIZE];
#endif
/* This describes the state of the AVR32 USART1 port. */
#ifdef CONFIG_AVR_USART1_RS232
static struct up_dev_s g_usart1priv =
{
.usartbase = AVR_USART1_BASE,
.baud = CONFIG_USART1_BAUD,
.irq = AVR_IRQ_USART1,
.parity = CONFIG_USART1_PARITY,
.bits = CONFIG_USART1_BITS,
.stopbits2 = CONFIG_USART1_2STOP,
};
static uart_dev_t g_usart1port =
{
.recv =
{
.size = CONFIG_USART1_RXBUFSIZE,
.buffer = g_usart1rxbuffer,
},
.xmit =
{
.size = CONFIG_USART1_TXBUFSIZE,
.buffer = g_usart1txbuffer,
},
.ops = &g_uart_ops,
.priv = &g_usart1priv,
};
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: up_serialin
****************************************************************************/
static inline uint32_t up_serialin(struct up_dev_s *priv, int offset)
{
# warning "Missing logic"
}
/****************************************************************************
* Name: up_serialout
****************************************************************************/
static inline void up_serialout(struct up_dev_s *priv, int offset, uint32_t value)
{
# warning "Missing logic"
}
/****************************************************************************
* Name: up_restoreusartint
****************************************************************************/
static void up_restoreusartint(struct up_dev_s *priv, uint32_t imr)
{
# warning "Missing logic"
}
/****************************************************************************
* Name: up_disableusartint
****************************************************************************/
static inline void up_disableusartint(struct up_dev_s *priv, uint32_t *imr)
{
# warning "Missing logic"
}
/****************************************************************************
* Name: up_setup
*
* Description:
* Configure the USART baud, bits, parity, etc. This method is called the
* first time that the serial port is opened.
*
****************************************************************************/
static int up_setup(struct uart_dev_s *dev)
{
#ifndef CONFIG_SUPPRESS_UART_CONFIG
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
/* Configure the USART as an RS-232 UART */
usart_configure(priv->usartbase, priv->baud, priv->parity,
priv->bits, priv->stopbits2);
#endif
return OK;
}
/****************************************************************************
* Name: up_shutdown
*
* Description:
* Disable the USART. This method is called when the serial
* port is closed
*
****************************************************************************/
static void up_shutdown(struct uart_dev_s *dev)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
/* Reset, disable interrupts, and disable Rx and Tx */
usart_reset(priv->usartbase);
}
/****************************************************************************
* Name: up_attach
*
* Description:
* Configure the USART to operation in interrupt driven mode. This method is
* called when the serial port is opened. Normally, this is just after the
* the setup() method is called, however, the serial console may operate in
* a non-interrupt driven mode during the boot phase.
*
* RX and TX interrupts are not enabled when by the attach method (unless the
* hardware supports multiple levels of interrupt enabling). The RX and TX
* interrupts are not enabled until the txint() and rxint() methods are called.
*
****************************************************************************/
static int up_attach(struct uart_dev_s *dev)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
/* Attach the IRQ */
return irq_attach(priv->irq, up_interrupt);
}
/****************************************************************************
* Name: up_detach
*
* Description:
* Detach USART interrupts. This method is called when the serial port is
* closed normally just before the shutdown method is called. The exception
* is the serial console which is never shutdown.
*
****************************************************************************/
static void up_detach(struct uart_dev_s *dev)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
# warning "Missing logic"
irq_detach(priv->irq);
}
/****************************************************************************
* Name: up_interrupt
*
* Description:
* This is the USART interrupt handler. It will be invoked when an
* interrupt received on the 'irq' It should call uart_transmitchars or
* uart_receivechar to perform the appropriate data transfers. The
* interrupt handling logic must be able to map the 'irq' number into the
* approprite uart_dev_s structure in order to call these functions.
*
****************************************************************************/
static int up_interrupt(int irq, void *context)
{
struct uart_dev_s *dev = NULL;
struct up_dev_s *priv;
uint32_t csr;
int passes;
bool handled;
#ifdef CONFIG_AVR_USART1_RS232
if (g_usart1priv.irq == irq)
{
dev = &g_usart1port;
}
else
#endif
{
PANIC(OSERR_INTERNAL);
}
priv = (struct up_dev_s*)dev->priv;
DEBUGASSERT(priv);
/* Loop until there are no characters to be transferred or,
* until we have been looping for a long time.
*/
handled = true;
for (passes = 0; passes < 256 && handled; passes++)
{
handled = false;
# warning "Missing logic"
/* Handle incoming, receive bytes (with or without timeout) */
# warning "Missing logic"
{
/* Received data ready... process incoming bytes */
uart_recvchars(dev);
handled = true;
}
/* Handle outgoing, transmit bytes */
# warning "Missing logic"
{
/* Transmit data regiser empty ... process outgoing bytes */
uart_xmitchars(dev);
handled = true;
}
}
return OK;
}
/****************************************************************************
* Name: up_ioctl
*
* Description:
* All ioctl calls will be routed through this method
*
****************************************************************************/
static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
{
#if 0 /* Reserved for future growth */
struct inode *inode;
struct uart_dev_s *dev;
struct up_dev_s *priv;
int ret = OK;
DEBUGASSERT(filep, filep->f_inode);
inode = filep->f_inode;
dev = inode->i_private;
DEBUGASSERT(dev, dev->priv)
priv = (struct up_dev_s*)dev->priv;
switch (cmd)
{
case xxx: /* Add commands here */
break;
default:
ret = -ENOTTY;
break;
}
return ret;
#else
return -ENOTTY;
#endif
}
/****************************************************************************
* Name: up_receive
*
* Description:
* Called (usually) from the interrupt level to receive one
* character from the USART. Error bits associated with the
* receipt are provided in the return 'status'.
*
****************************************************************************/
static int up_receive(struct uart_dev_s *dev, uint32_t *status)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
/* Get the Rx byte. The USART Rx interrupt flag is cleared by side effect
* when reading the received character.
*/
# warning "Missing logic"
/* Return status information */
if (status)
{
# warning "Missing logic"
}
/* Then return the actual received byte */
# warning "Missing logic"
return 0;
}
/****************************************************************************
* Name: up_rxint
*
* Description:
* Call to enable or disable RX interrupts
*
****************************************************************************/
static void up_rxint(struct uart_dev_s *dev, bool enable)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
if (enable)
{
/* Receive an interrupt when their is anything in the Rx data register (or an Rx
* timeout occurs).
*/
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
# warning "Missing logic"
#endif
}
else
{
# warning "Missing logic"
}
}
/****************************************************************************
* Name: up_rxavailable
*
* Description:
* Return true if the receive register is not empty
*
****************************************************************************/
static bool up_rxavailable(struct uart_dev_s *dev)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
# warning "Missing logic"
return 0;
}
/****************************************************************************
* Name: up_send
*
* Description:
* This method will send one byte on the USART.
*
****************************************************************************/
static void up_send(struct uart_dev_s *dev, int ch)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
# warning "Missing logic"
return 0;
}
/****************************************************************************
* Name: up_txint
*
* Description:
* Call to enable or disable TX interrupts
*
****************************************************************************/
static void up_txint(struct uart_dev_s *dev, bool enable)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
irqstate_t flags;
flags = irqsave();
if (enable)
{
/* Set to receive an interrupt when the TX data register is empty */
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
# warning "Missing logic"
/* Fake a TX interrupt here by just calling uart_xmitchars() with
* interrupts disabled (note this may recurse).
*/
uart_xmitchars(dev);
#endif
}
else
{
/* Disable the TX interrupt */
# warning "Missing logic"
}
irqrestore(flags);
}
/****************************************************************************
* Name: up_txready
*
* Description:
* Return true if the tranmsit data register is empty
*
****************************************************************************/
static bool up_txready(struct uart_dev_s *dev)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
# warning "Missing logic"
return 0;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_earlyserialinit
*
* Description:
* Performs the low level USART initialization early in debug so that the
* serial console will be available during bootup. This must be called
* before up_serialinit. NOTE: This function depends on GPIO pin
* configuration performed in up_consoleinit() and main clock iniialization
* performed in up_clkinitialize().
*
****************************************************************************/
void up_earlyserialinit(void)
{
/* Disable all USARTS */
up_disableusartint(TTYS0_DEV.priv, NULL);
#ifdef TTYS1_DEV
up_disableusartint(TTYS1_DEV.priv, NULL);
#endif
/* Configuration whichever one is the console */
#ifdef HAVE_SERIAL_CONSOLE
CONSOLE_DEV.isconsole = true;
up_setup(&CONSOLE_DEV);
#endif
}
/****************************************************************************
* Name: up_serialinit
*
* Description:
* Register serial console and serial ports. This assumes
* that up_earlyserialinit was called previously.
*
****************************************************************************/
void up_serialinit(void)
{
/* Register the console */
#ifdef HAVE_SERIAL_CONSOLE
(void)uart_register("/dev/console", &CONSOLE_DEV);
#endif
/* Register all USARTs */
(void)uart_register("/dev/ttyS0", &TTYS0_DEV);
#ifdef TTYS1_DEV
(void)uart_register("/dev/ttyS1", &TTYS1_DEV);
#endif
}
/****************************************************************************
* Name: up_putc
*
* Description:
* Provide priority, low-level access to support OS debug writes
*
****************************************************************************/
int up_putc(int ch)
{
#ifdef HAVE_SERIAL_CONSOLE
struct up_dev_s *priv = (struct up_dev_s*)CONSOLE_DEV.priv;
uint32_t imr;
up_disableusartint(priv, &imr);
/* Check for LF */
if (ch == '\n')
{
/* Add CR */
up_lowputc('\r');
}
up_lowputc(ch);
up_restoreusartint(priv, imr);
#endif
return ch;
}
#else /* CONFIG_USE_SERIALDRIVER */
/****************************************************************************
* Name: up_putc
*
* Description:
* Provide priority, low-level access to support OS debug writes
*
****************************************************************************/
int up_putc(int ch)
{
#ifdef HAVE_SERIAL_CONSOLE
/* Check for LF */
if (ch == '\n')
{
/* Add CR */
up_lowputc('\r');
}
up_lowputc(ch);
#endif
return ch;
}
#endif /* CONFIG_USE_SERIALDRIVER */

165
arch/avr/src/at90usb/at90usb_timerisr.c Normal file
View File

@ -0,0 +1,165 @@
/****************************************************************************
* arch/avr/src/at90usb/at90usb_timerisr.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <time.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <arch/board/board.h>
#include <avr/io.h>
#include "up_arch.h"
#include "at90usb_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/* The CPU frequency is given by BOARD_CPU_CLOCK (defined in board.h). The
* desired interrupt frequency is given by CONFIG_MSEC_PER_TICK. An unscaled
* ideal match is given by:
*
* CLOCK = CPU_CLOCK / DIVISOR # CPU clocks/sec
* MATCH = CLOCK / CLOCKS_PER_SEC # CPU clocks/timer tick
* MATCH = CPU_CLOCK / DIVISOR / CLOCKS_PER_SEC # CPU clocks/timer tick
*
* But we only have 16-bits of accuracy so we need to pick the smallest
* divisor using the following brute force calculation:
*/
#define MATCH1 (( BOARD_CPU_CLOCK + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC)
#define MATCH8 ((((BOARD_CPU_CLOCK + 4) / 8) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC)
#define MATCH64 ((((BOARD_CPU_CLOCK + 8) / 64) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC)
#define MATCH256 ((((BOARD_CPU_CLOCK + 128) / 256) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC)
#define MATCH1024 ((((BOARD_CPU_CLOCK + 512) / 1024) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC)
#if MATCH1 <= 65536
# define MATCH (MATCH1-1)
# define PRESCALE 1
#elif MATCH8 <= 65536
# define MATCH (MATCH8-1)
# define PRESCALE 2
#elif MATCH64 <= 65536
# define MATCH (MATCH64-1)
# define PRESCALE 3
#elif MATCH256 <= 65536
# define MATCH (MATCH256-1)
# define PRESCALE 4
#elif MATCH1024 <= 65536
# define MATCH (MATCH1024-1)
# define PRESCALE 5
#else
# error "Cannot represent this timer frequency"
#endif
/*
* Eg. CPU_CLOCK = 8MHz, CLOCKS_PER_SEC = 100
*
* MATCH1 ((8000000 + 50) / 100) = 80,000 FREQ=100.0Hz
* MATCH8 ((1000000 + 50) / 100) = 10,000 FREQ=100.0Hz <-- this one
* MATCH64 (( 125000 + 50) / 100) = 1,250 FREQ=100.0Hz
* MATCH256 (( 31250 + 50) / 100) = 313 FREQ=99.8Hz
* MATCH1024 (( 7804 + 50) / 100) = 78 FREQ=100.1Hz
*/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Function: up_timerisr
*
* Description:
* The timer ISR will perform a variety of services for various portions
* of the systems.
*
****************************************************************************/
int up_timerisr(int irq, uint32_t *regs)
{
/* Process timer interrupt */
sched_process_timer();
return 0;
}
/****************************************************************************
* Function: up_timerinit
*
* Description:
* This function is called during start-up to initialize the timer
* interrupt. NOTE: This function depends on setup of OSC32 by
* up_clkinitialize().
*
****************************************************************************/
void up_timerinit(void)
{
/* Setup timer 1 compare match A to generate a tick interrupt.
*
* First, setup the match value for compare match A.
*/
OCR1AH = (uint8_t)((uint16_t)MATCH >> 8);
OCR1AL = (uint8_t)((uint16_t)MATCH & 0xff);
/* Setup clock source and compare match behaviour. */
TCCR1A = 0x08 | PRESCALE;
/* Attach the timer interrupt vector */
(void)irq_attach(AT90USB_IRQ_T2COMPA, (xcpt_t)up_timerisr);
/* Enable the interrupt on compare match A */
TIMSK1 |= 0x10;
}

11
arch/avr/src/atmega/Make.defs
View File

@ -42,10 +42,11 @@ HEAD_ASRC = atmega_head.S
CMN_ASRCS = up_switchcontext.S CMN_ASRCS = up_switchcontext.S
CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \ CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
up_createstack.c up_doirq.c up_exit.c up_idle.c up_initialize.c \ up_createstack.c up_doirq.c up_exit.c up_idle.c up_initialize.c \
up_interruptcontext.c up_lowputs.c up_mdelay.c up_modifyreg8.c \ up_initialstate.c up_interruptcontext.c up_irq.c up_lowputs.c \
up_modifyreg16.c up_modifyreg32.c up_puts.c up_releasepending.c \ up_mdelay.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c \ up_puts.c up_releasepending.c up_releasestack.c \
up_sigdeliver.c up_udelay.c up_unblocktask.c up_usestack.c up_reprioritizertr.c up_schedulesigaction.c up_sigdeliver.c \
up_udelay.c up_unblocktask.c up_usestack.c
# Configuration-dependent common files # Configuration-dependent common files
@ -56,7 +57,7 @@ endif
# Required ATMEGA files # Required ATMEGA files
CHIP_ASRCS = atmega_exceptions.S CHIP_ASRCS = atmega_exceptions.S
CHIP_CSRCS = CHIP_CSRCS = atmega_lowconsole.c atmega_lowinit.c atmega_serial.c atmega_timerisr.c
# Configuration-dependent ATMEGA files # Configuration-dependent ATMEGA files

22
arch/avr/src/atmega/atmega_config.h
View File

@ -45,6 +45,28 @@
/************************************************************************************ /************************************************************************************
* Pre-processor Definitions * Pre-processor Definitions
************************************************************************************/ ************************************************************************************/
/* USARTs ***************************************************************************/
#undef HAVE_USART_DEVICE
#if defined(CONFIG_AVR_USART0) || defined(CONFIG_AVR_USART0)
# define HAVE_USART_DEVICE 1
#endif
/* Is there a serial console? There should be at most one defined. It
* could be on any USARTn, n=0,1
*/
#if defined(CONFIG_USART0_SERIAL_CONSOLE) && defined(CONFIG_AVR_USART0)
# undef CONFIG_USART1_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#elif defined(CONFIG_USART1_SERIAL_CONSOLE) && defined(CONFIG_AVR_USART1)
# undef CONFIG_USART0_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#else
# undef CONFIG_USART0_SERIAL_CONSOLE
# undef CONFIG_USART1_SERIAL_CONSOLE
# undef HAVE_SERIAL_CONSOLE
#endif
/************************************************************************************ /************************************************************************************
* Public Types * Public Types

7
arch/avr/src/atmega/atmega_head.S
View File

@ -66,6 +66,7 @@
****************************************************************************/ ****************************************************************************/
.file "up_nommuhead.S" .file "up_nommuhead.S"
.global __start /* Entry point */
.global _sbss /* Start of .bss. Defined by ld.script */ .global _sbss /* Start of .bss. Defined by ld.script */
.global _ebss /* End of .bss. Defined by ld.script */ .global _ebss /* End of .bss. Defined by ld.script */
.global _sdata /* Start of .data section in RAM */ .global _sdata /* Start of .data section in RAM */
@ -242,9 +243,13 @@ __do_clear_bss:
cpc r27, r17 cpc r27, r17
brne .Lclearloop brne .Lclearloop
/* Perform any low-level initialization */
call up_lowinit
/* Now start NuttX */ /* Now start NuttX */
call os_start /* Start NuttX */ call os_start
jmp exit jmp exit
.endfunc .endfunc

174
arch/avr/src/atmega/atmega_lowconsole.c Normal file
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@ -0,0 +1,174 @@
/******************************************************************************
* arch/avr/src/atmega/atmega_lowconsole.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************/
/******************************************************************************
* Included Files
******************************************************************************/
#include <nuttx/config.h>
#include "atmega_config.h"
#include <assert.h>
#include <debug.h>
#include <arch/irq.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
#include "atmega_internal.h"
/******************************************************************************
* Private Definitions
******************************************************************************/
/* Select USART parameters for the selected console */
#if defined(CONFIG_USART0_SERIAL_CONSOLE)
# define AVR__CONSOLE_BASE AVR__USART0_BASE
# define AVR__CONSOLE_BAUD CONFIG_USART0_BAUD
# define AVR__CONSOLE_BITS CONFIG_USART0_BITS
# define AVR__CONSOLE_PARITY CONFIG_USART0_PARITY
# define AVR__CONSOLE_2STOP CONFIG_USART0_2STOP
#elif defined(CONFIG_USART1_SERIAL_CONSOLE)
# define AVR__CONSOLE_BASE AVR__USART1_BASE
# define AVR__CONSOLE_BAUD CONFIG_USART1_BAUD
# define AVR__CONSOLE_BITS CONFIG_USART1_BITS
# define AVR__CONSOLE_PARITY CONFIG_USART1_PARITY
# define AVR__CONSOLE_2STOP CONFIG_USART1_2STOP
#else
# error "No CONFIG_USARTn_SERIAL_CONSOLE Setting"
#endif
/******************************************************************************
* Private Types
******************************************************************************/
/******************************************************************************
* Private Function Prototypes
******************************************************************************/
/******************************************************************************
* Global Variables
******************************************************************************/
/******************************************************************************
* Private Variables
******************************************************************************/
/******************************************************************************
* Private Functions
******************************************************************************/
/******************************************************************************
* Name: usart_setbaudrate
*
* Description:
* Configure the USART baud rate.
*
******************************************************************************/
#ifdef HAVE_USART_DEVICE
static void usart_setbaudrate(uintptr_t usart_base, uint32_t baudrate)
{
# warning "Missing logic"
}
#endif
/******************************************************************************
* Public Functions
******************************************************************************/
/******************************************************************************
* Name: usart_reset
*
* Description:
* Reset a USART.
*
******************************************************************************/
#ifdef HAVE_USART_DEVICE
void usart_reset(uintptr_t usart_base)
{
# warning "Missing logic"
}
#endif
/******************************************************************************
* Name: usart_configure
*
* Description:
* Configure a USART as a RS-232 USART.
*
******************************************************************************/
#ifdef HAVE_USART_DEVICE
void usart_configure(uintptr_t usart_base, uint32_t baud, unsigned int parity,
unsigned int nbits, bool stop2)
{
# warning "Missing logic"
}
#endif
/******************************************************************************
* Name: up_consoleinit
*
* Description:
* Initialize a console for debug output. This function is called very
* early in the intialization sequence to configure the serial console uart
* (only).
*
******************************************************************************/
void up_consoleinit(void)
{
# warning "Missing logic"
}
/******************************************************************************
* Name: up_lowputc
*
* Description:
* Output one byte on the serial console
*
******************************************************************************/
void up_lowputc(char ch)
{
#ifdef HAVE_SERIAL_CONSOLE
# warning "Missing logic"
#endif
}

103
arch/avr/src/atmega/atmega_lowinit.c Normal file
View File

@ -0,0 +1,103 @@
/**************************************************************************
* arch/avr/src/atmega/atmega_lowinit.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
**************************************************************************/
/**************************************************************************
* Included Files
**************************************************************************/
#include <nuttx/config.h>
#include "atmega_config.h"
#include "up_internal.h"
#include "atmega_internal.h"
/**************************************************************************
* Private Definitions
**************************************************************************/
/**************************************************************************
* Private Types
**************************************************************************/
/**************************************************************************
* Private Function Prototypes
**************************************************************************/
/**************************************************************************
* Global Variables
**************************************************************************/
/**************************************************************************
* Private Variables
**************************************************************************/
/**************************************************************************
* Private Functions
**************************************************************************/
/**************************************************************************
* Public Functions
**************************************************************************/
/**************************************************************************
* Name: up_lowinit
*
* Description:
* This performs basic initialization of the USART used for the serial
* console. Its purpose is to get the console output availabe as soon
* as possible.
*
**************************************************************************/
void up_lowinit(void)
{
/* Initialize a console (probably a serial console) */
up_consoleinit();
/* Perform early serial initialization (so that we will have debug output
* available as soon as possible).
*/
#ifdef CONFIG_USE_EARLYSERIALINIT
up_earlyserialinit();
#endif
/* Perform board-level initialization */
up_boardinitialize();
}

718
arch/avr/src/atmega/atmega_serial.c Normal file
View File

@ -0,0 +1,718 @@
/****************************************************************************
* arch/avr/src/atmega/atmega_serial.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "atmega_config.h"
#include <sys/types.h>
#include <stdint.h>
#include <stdbool.h>
#include <unistd.h>
#include <semaphore.h>
#include <string.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include <nuttx/serial.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "up_internal.h"
#include "os_internal.h"
#include "atmega_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/* Some sanity checks *******************************************************/
/* Is there at least one USART enabled and configured as a RS-232 device? */
#ifndef HAVE_USART_DEVICE
# warning "No USARTs enabled as RS-232 devices"
#endif
/* If we are not using the serial driver for the console, then we still must
* provide some minimal implementation of up_putc.
*/
#ifdef CONFIG_USE_SERIALDRIVER
/* Which USART with be tty0/console and which tty1? */
#if defined(CONFIG_USART0_SERIAL_CONSOLE)
# define CONSOLE_DEV g_usart0port /* USART0 is console */
# define TTYS0_DEV g_usart0port /* USART0 is ttyS0 */
# ifdef CONFIG_AVR_USART1_RS232
# define TTYS1_DEV g_usart1port /* USART1 is ttyS1 */
# else
# undef TTYS1_DEV /* No ttyS1 */
# endif
#elif defined(CONFIG_USART1_SERIAL_CONSOLE)
# define CONSOLE_DEV g_usart1port /* USART1 is console */
# define TTYS0_DEV g_usart1port /* USART1 is ttyS0 */
# ifdef CONFIG_AVR_USART0_RS232
# define TTYS1_DEV g_usart0port /* USART0 is ttyS1 */
# else
# undef TTYS1_DEV /* No ttyS1 */
# endif
#endif
/****************************************************************************
* Private Types
****************************************************************************/
struct up_dev_s
{
uintptr_t usartbase; /* Base address of USART registers */
uint32_t baud; /* Configured baud */
uint32_t csr; /* Saved channel status register contents */
uint8_t irq; /* IRQ associated with this USART */
uint8_t parity; /* 0=none, 1=odd, 2=even */
uint8_t bits; /* Number of bits (5, 6, 7 or 8) */
bool stopbits2; /* true: Configure with 2 stop bits instead of 1 */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
static int up_setup(struct uart_dev_s *dev);
static void up_shutdown(struct uart_dev_s *dev);
static int up_attach(struct uart_dev_s *dev);
static void up_detach(struct uart_dev_s *dev);
static int up_interrupt(int irq, void *context);
static int up_ioctl(struct file *filep, int cmd, unsigned long arg);
static int up_receive(struct uart_dev_s *dev, uint32_t *status);
static void up_rxint(struct uart_dev_s *dev, bool enable);
static bool up_rxavailable(struct uart_dev_s *dev);
static void up_send(struct uart_dev_s *dev, int ch);
static void up_txint(struct uart_dev_s *dev, bool enable);
static bool up_txready(struct uart_dev_s *dev);
/****************************************************************************
* Private Variables
****************************************************************************/
struct uart_ops_s g_uart_ops =
{
.setup = up_setup,
.shutdown = up_shutdown,
.attach = up_attach,
.detach = up_detach,
.ioctl = up_ioctl,
.receive = up_receive,
.rxint = up_rxint,
.rxavailable = up_rxavailable,
.send = up_send,
.txint = up_txint,
.txready = up_txready,
.txempty = up_txready,
};
/* I/O buffers */
#ifdef CONFIG_AVR_USART0_RS232
static char g_usart0rxbuffer[CONFIG_USART0_RXBUFSIZE];
static char g_usart0txbuffer[CONFIG_USART0_TXBUFSIZE];
#endif
#ifdef CONFIG_AVR_USART1_RS232
static char g_usart1rxbuffer[CONFIG_USART1_RXBUFSIZE];
static char g_usart1txbuffer[CONFIG_USART1_TXBUFSIZE];
#endif
/* This describes the state of the AVR32 USART0 ports. */
#ifdef CONFIG_AVR_USART0_RS232
static struct up_dev_s g_usart0priv =
{
.usartbase = AVR_USART0_BASE,
.baud = CONFIG_USART0_BAUD,
.irq = AVR_IRQ_USART0,
.parity = CONFIG_USART0_PARITY,
.bits = CONFIG_USART0_BITS,
.stopbits2 = CONFIG_USART0_2STOP,
};
static uart_dev_t g_usart0port =
{
.recv =
{
.size = CONFIG_USART0_RXBUFSIZE,
.buffer = g_usart0rxbuffer,
},
.xmit =
{
.size = CONFIG_USART0_TXBUFSIZE,
.buffer = g_usart0txbuffer,
},
.ops = &g_uart_ops,
.priv = &g_usart0priv,
};
#endif
/* This describes the state of the AVR32 USART1 port. */
#ifdef CONFIG_AVR_USART1_RS232
static struct up_dev_s g_usart1priv =
{
.usartbase = AVR_USART1_BASE,
.baud = CONFIG_USART1_BAUD,
.irq = AVR_IRQ_USART1,
.parity = CONFIG_USART1_PARITY,
.bits = CONFIG_USART1_BITS,
.stopbits2 = CONFIG_USART1_2STOP,
};
static uart_dev_t g_usart1port =
{
.recv =
{
.size = CONFIG_USART1_RXBUFSIZE,
.buffer = g_usart1rxbuffer,
},
.xmit =
{
.size = CONFIG_USART1_TXBUFSIZE,
.buffer = g_usart1txbuffer,
},
.ops = &g_uart_ops,
.priv = &g_usart1priv,
};
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: up_serialin
****************************************************************************/
static inline uint32_t up_serialin(struct up_dev_s *priv, int offset)
{
# warning "Missing logic"
}
/****************************************************************************
* Name: up_serialout
****************************************************************************/
static inline void up_serialout(struct up_dev_s *priv, int offset, uint32_t value)
{
# warning "Missing logic"
}
/****************************************************************************
* Name: up_restoreusartint
****************************************************************************/
static void up_restoreusartint(struct up_dev_s *priv, uint32_t imr)
{
# warning "Missing logic"
}
/****************************************************************************
* Name: up_disableusartint
****************************************************************************/
static inline void up_disableusartint(struct up_dev_s *priv, uint32_t *imr)
{
# warning "Missing logic"
}
/****************************************************************************
* Name: up_setup
*
* Description:
* Configure the USART baud, bits, parity, etc. This method is called the
* first time that the serial port is opened.
*
****************************************************************************/
static int up_setup(struct uart_dev_s *dev)
{
#ifndef CONFIG_SUPPRESS_UART_CONFIG
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
/* Configure the USART as an RS-232 UART */
usart_configure(priv->usartbase, priv->baud, priv->parity,
priv->bits, priv->stopbits2);
#endif
return OK;
}
/****************************************************************************
* Name: up_shutdown
*
* Description:
* Disable the USART. This method is called when the serial
* port is closed
*
****************************************************************************/
static void up_shutdown(struct uart_dev_s *dev)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
/* Reset, disable interrupts, and disable Rx and Tx */
usart_reset(priv->usartbase);
}
/****************************************************************************
* Name: up_attach
*
* Description:
* Configure the USART to operation in interrupt driven mode. This method is
* called when the serial port is opened. Normally, this is just after the
* the setup() method is called, however, the serial console may operate in
* a non-interrupt driven mode during the boot phase.
*
* RX and TX interrupts are not enabled when by the attach method (unless the
* hardware supports multiple levels of interrupt enabling). The RX and TX
* interrupts are not enabled until the txint() and rxint() methods are called.
*
****************************************************************************/
static int up_attach(struct uart_dev_s *dev)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
/* Attach the IRQ */
return irq_attach(priv->irq, up_interrupt);
}
/****************************************************************************
* Name: up_detach
*
* Description:
* Detach USART interrupts. This method is called when the serial port is
* closed normally just before the shutdown method is called. The exception
* is the serial console which is never shutdown.
*
****************************************************************************/
static void up_detach(struct uart_dev_s *dev)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
# warning "Missing logic"
irq_detach(priv->irq);
}
/****************************************************************************
* Name: up_interrupt
*
* Description:
* This is the USART interrupt handler. It will be invoked when an
* interrupt received on the 'irq' It should call uart_transmitchars or
* uart_receivechar to perform the appropriate data transfers. The
* interrupt handling logic must be able to map the 'irq' number into the
* approprite uart_dev_s structure in order to call these functions.
*
****************************************************************************/
static int up_interrupt(int irq, void *context)
{
struct uart_dev_s *dev = NULL;
struct up_dev_s *priv;
uint32_t csr;
int passes;
bool handled;
#ifdef CONFIG_AVR_USART0_RS232
if (g_usart0priv.irq == irq)
{
dev = &g_usart0port;
}
else
#endif
#ifdef CONFIG_AVR_USART1_RS232
if (g_usart1priv.irq == irq)
{
dev = &g_usart1port;
}
else
#endif
{
PANIC(OSERR_INTERNAL);
}
priv = (struct up_dev_s*)dev->priv;
DEBUGASSERT(priv);
/* Loop until there are no characters to be transferred or,
* until we have been looping for a long time.
*/
handled = true;
for (passes = 0; passes < 256 && handled; passes++)
{
handled = false;
# warning "Missing logic"
/* Handle incoming, receive bytes (with or without timeout) */
# warning "Missing logic"
{
/* Received data ready... process incoming bytes */
uart_recvchars(dev);
handled = true;
}
/* Handle outgoing, transmit bytes */
# warning "Missing logic"
{
/* Transmit data regiser empty ... process outgoing bytes */
uart_xmitchars(dev);
handled = true;
}
}
return OK;
}
/****************************************************************************
* Name: up_ioctl
*
* Description:
* All ioctl calls will be routed through this method
*
****************************************************************************/
static int up_ioctl(struct file *filep, int cmd, unsigned long arg)
{
#if 0 /* Reserved for future growth */
struct inode *inode;
struct uart_dev_s *dev;
struct up_dev_s *priv;
int ret = OK;
DEBUGASSERT(filep, filep->f_inode);
inode = filep->f_inode;
dev = inode->i_private;
DEBUGASSERT(dev, dev->priv)
priv = (struct up_dev_s*)dev->priv;
switch (cmd)
{
case xxx: /* Add commands here */
break;
default:
ret = -ENOTTY;
break;
}
return ret;
#else
return -ENOTTY;
#endif
}
/****************************************************************************
* Name: up_receive
*
* Description:
* Called (usually) from the interrupt level to receive one
* character from the USART. Error bits associated with the
* receipt are provided in the return 'status'.
*
****************************************************************************/
static int up_receive(struct uart_dev_s *dev, uint32_t *status)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
/* Get the Rx byte. The USART Rx interrupt flag is cleared by side effect
* when reading the received character.
*/
# warning "Missing logic"
/* Return status information */
if (status)
{
# warning "Missing logic"
}
/* Then return the actual received byte */
# warning "Missing logic"
return 0;
}
/****************************************************************************
* Name: up_rxint
*
* Description:
* Call to enable or disable RX interrupts
*
****************************************************************************/
static void up_rxint(struct uart_dev_s *dev, bool enable)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
if (enable)
{
/* Receive an interrupt when their is anything in the Rx data register (or an Rx
* timeout occurs).
*/
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
# warning "Missing logic"
#endif
}
else
{
# warning "Missing logic"
}
}
/****************************************************************************
* Name: up_rxavailable
*
* Description:
* Return true if the receive register is not empty
*
****************************************************************************/
static bool up_rxavailable(struct uart_dev_s *dev)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
# warning "Missing logic"
return 0;
}
/****************************************************************************
* Name: up_send
*
* Description:
* This method will send one byte on the USART.
*
****************************************************************************/
static void up_send(struct uart_dev_s *dev, int ch)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
# warning "Missing logic"
return 0;
}
/****************************************************************************
* Name: up_txint
*
* Description:
* Call to enable or disable TX interrupts
*
****************************************************************************/
static void up_txint(struct uart_dev_s *dev, bool enable)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
irqstate_t flags;
flags = irqsave();
if (enable)
{
/* Set to receive an interrupt when the TX data register is empty */
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
# warning "Missing logic"
/* Fake a TX interrupt here by just calling uart_xmitchars() with
* interrupts disabled (note this may recurse).
*/
uart_xmitchars(dev);
#endif
}
else
{
/* Disable the TX interrupt */
# warning "Missing logic"
}
irqrestore(flags);
}
/****************************************************************************
* Name: up_txready
*
* Description:
* Return true if the tranmsit data register is empty
*
****************************************************************************/
static bool up_txready(struct uart_dev_s *dev)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
# warning "Missing logic"
return 0;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_earlyserialinit
*
* Description:
* Performs the low level USART initialization early in debug so that the
* serial console will be available during bootup. This must be called
* before up_serialinit. NOTE: This function depends on GPIO pin
* configuration performed in up_consoleinit() and main clock iniialization
* performed in up_clkinitialize().
*
****************************************************************************/
void up_earlyserialinit(void)
{
/* Disable all USARTS */
up_disableusartint(TTYS0_DEV.priv, NULL);
#ifdef TTYS1_DEV
up_disableusartint(TTYS1_DEV.priv, NULL);
#endif
/* Configuration whichever one is the console */
#ifdef HAVE_SERIAL_CONSOLE
CONSOLE_DEV.isconsole = true;
up_setup(&CONSOLE_DEV);
#endif
}
/****************************************************************************
* Name: up_serialinit
*
* Description:
* Register serial console and serial ports. This assumes
* that up_earlyserialinit was called previously.
*
****************************************************************************/
void up_serialinit(void)
{
/* Register the console */
#ifdef HAVE_SERIAL_CONSOLE
(void)uart_register("/dev/console", &CONSOLE_DEV);
#endif
/* Register all USARTs */
(void)uart_register("/dev/ttyS0", &TTYS0_DEV);
#ifdef TTYS1_DEV
(void)uart_register("/dev/ttyS1", &TTYS1_DEV);
#endif
}
/****************************************************************************
* Name: up_putc
*
* Description:
* Provide priority, low-level access to support OS debug writes
*
****************************************************************************/
int up_putc(int ch)
{
#ifdef HAVE_SERIAL_CONSOLE
struct up_dev_s *priv = (struct up_dev_s*)CONSOLE_DEV.priv;
uint32_t imr;
up_disableusartint(priv, &imr);
/* Check for LF */
if (ch == '\n')
{
/* Add CR */
up_lowputc('\r');
}
up_lowputc(ch);
up_restoreusartint(priv, imr);
#endif
return ch;
}
#else /* CONFIG_USE_SERIALDRIVER */
/****************************************************************************
* Name: up_putc
*
* Description:
* Provide priority, low-level access to support OS debug writes
*
****************************************************************************/
int up_putc(int ch)
{
#ifdef HAVE_SERIAL_CONSOLE
/* Check for LF */
if (ch == '\n')
{
/* Add CR */
up_lowputc('\r');
}
up_lowputc(ch);
#endif
return ch;
}
#endif /* CONFIG_USE_SERIALDRIVER */

165
arch/avr/src/atmega/atmega_timerisr.c Normal file
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@ -0,0 +1,165 @@
/****************************************************************************
* arch/avr/src/atmega/atmega_timerisr.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <time.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <arch/board/board.h>
#include <avr/io.h>
#include "up_arch.h"
#include "atmega_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/* The CPU frequency is given by BOARD_CPU_CLOCK (defined in board.h). The
* desired interrupt frequency is given by CONFIG_MSEC_PER_TICK. An unscaled
* ideal match is given by:
*
* CLOCK = CPU_CLOCK / DIVISOR # CPU clocks/sec
* MATCH = CLOCK / CLOCKS_PER_SEC # CPU clocks/timer tick
* MATCH = CPU_CLOCK / DIVISOR / CLOCKS_PER_SEC # CPU clocks/timer tick
*
* But we only have 16-bits of accuracy so we need to pick the smallest
* divisor using the following brute force calculation:
*/
#define MATCH1 (( BOARD_CPU_CLOCK + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC)
#define MATCH8 ((((BOARD_CPU_CLOCK + 4) / 8) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC)
#define MATCH64 ((((BOARD_CPU_CLOCK + 8) / 64) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC)
#define MATCH256 ((((BOARD_CPU_CLOCK + 128) / 256) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC)
#define MATCH1024 ((((BOARD_CPU_CLOCK + 512) / 1024) + CLOCKS_PER_SEC/2) / CLOCKS_PER_SEC)
#if MATCH1 <= 65536
# define MATCH (MATCH1-1)
# define PRESCALE 1
#elif MATCH8 <= 65536
# define MATCH (MATCH8-1)
# define PRESCALE 2
#elif MATCH64 <= 65536
# define MATCH (MATCH64-1)
# define PRESCALE 3
#elif MATCH256 <= 65536
# define MATCH (MATCH256-1)
# define PRESCALE 4
#elif MATCH1024 <= 65536
# define MATCH (MATCH1024-1)
# define PRESCALE 5
#else
# error "Cannot represent this timer frequency"
#endif
/*
* Eg. CPU_CLOCK = 8MHz, CLOCKS_PER_SEC = 100
*
* MATCH1 ((8000000 + 50) / 100) = 80,000 FREQ=100.0Hz
* MATCH8 ((1000000 + 50) / 100) = 10,000 FREQ=100.0Hz <-- this one
* MATCH64 (( 125000 + 50) / 100) = 1,250 FREQ=100.0Hz
* MATCH256 (( 31250 + 50) / 100) = 313 FREQ=99.8Hz
* MATCH1024 (( 7804 + 50) / 100) = 78 FREQ=100.1Hz
*/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Global Functions
****************************************************************************/
/****************************************************************************
* Function: up_timerisr
*
* Description:
* The timer ISR will perform a variety of services for various portions
* of the systems.
*
****************************************************************************/
int up_timerisr(int irq, uint32_t *regs)
{
/* Process timer interrupt */
sched_process_timer();
return 0;
}
/****************************************************************************
* Function: up_timerinit
*
* Description:
* This function is called during start-up to initialize the timer
* interrupt. NOTE: This function depends on setup of OSC32 by
* up_clkinitialize().
*
****************************************************************************/
void up_timerinit(void)
{
/* Setup timer 1 compare match A to generate a tick interrupt.
*
* First, setup the match value for compare match A.
*/
OCR1AH = (uint8_t)((uint16_t)MATCH >> 8);
OCR1AL = (uint8_t)((uint16_t)MATCH & 0xff);
/* Setup clock source and compare match behaviour. */
TCCR1A = 0x08 | PRESCALE;
/* Attach the timer interrupt vector */
(void)irq_attach(AT90USB_IRQ_T2COMPA, (xcpt_t)up_timerisr);
/* Enable the interrupt on compare match A */
TIMSK1 |= 0x10;
}

110
arch/avr/src/avr/up_initialstate.c Normal file
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@ -0,0 +1,110 @@
/****************************************************************************
* arch/avr/src/avr/up_initialstate.c
*
* Copyright (C) 2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <string.h>
#include <nuttx/arch.h>
#include <arch/irq.h>
#include <avr/io.h>
#include "up_internal.h"
#include "up_arch.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_initial_state
*
* Description:
* A new thread is being started and a new TCB has been created. This
* function is called to initialize the processor specific portions of the
* new TCB.
*
* This function must setup the intial architecture registers and/or stack
* so that execution will begin at tcb->start on the next context switch.
*
****************************************************************************/
void up_initial_state(_TCB *tcb)
{
struct xcptcontext *xcp = &tcb->xcp;
/* Initialize the initial exception register context structure. Zeroing
* all registers is a good debug helper, but should not be necessary.
*/
memset(xcp, 0, sizeof(struct xcptcontext));
/* Set the initial stack pointer to the "base" of the allocated stack */
xcp->regs[REG_SPH] = (uint8_t)((uint16_t)tcb->adj_stack_ptr >> 8);
xcp->regs[REG_SPL] = (uint8_t)((uint16_t)tcb->adj_stack_ptr & 0xff);
/* Save the task entry point */
xcp->regs[REG_PCH] = (uint8_t)((uint16_t)tcb->start >> 8);
xcp->regs[REG_PCL] = (uint8_t)((uint16_t)tcb->start & 0xff);
/* Enable or disable interrupts, based on user configuration */
#ifdef CONFIG_SUPPRESS_INTERRUPTS
xcp->regs[REG_SREG] = getsreg() & ~(1 << SREG_I);
#else
xcp->regs[REG_SREG] = getsreg() | (1 << SREG_I);
#endif
}

108
arch/avr/src/avr/up_irq.c Normal file
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@ -0,0 +1,108 @@
/****************************************************************************
* arch/avr/src/avr/up_irq.c
*
* Copyright (C) 2010-2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "at90usb_config.h"
#include <stdint.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include <arch/irq.h>
#include <avr/io.h>
#include "up_arch.h"
#include "os_internal.h"
#include "up_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
volatile uint8_t *current_regs;
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_irqinitialize
****************************************************************************/
void up_irqinitialize(void)
{
/* currents_regs is non-NULL only while processing an interrupt */
current_regs = NULL;
/* Initialize GPIO interrupt facilities */
#ifdef CONFIG_AVR32_GPIOIRQ
#ifdef CONFIG_HAVE_WEAKFUNCTIONS
if (gpio_irqinitialize != NULL)
#endif
{
gpio_irqinitialize();
}
#endif
/* And finally, enable interrupts */
#ifndef CONFIG_SUPPRESS_INTERRUPTS
irqrestore(getsreg() | (1 << SREG_I));
#endif
}

4
arch/avr/src/avr/up_schedulesigaction.c
View File

@ -164,7 +164,7 @@ void up_schedule_sigaction(_TCB *tcb, sig_deliver_t sigdeliver)
current_regs[REG_PCL] = (uint16_t)up_sigdeliver & 0xff; current_regs[REG_PCL] = (uint16_t)up_sigdeliver & 0xff;
current_regs[REG_PCH] = (uint16_t)up_sigdeliver >> 8; current_regs[REG_PCH] = (uint16_t)up_sigdeliver >> 8;
current_regs[REG_SREG] |= (1 << SREG_I); current_regs[REG_SREG] &= ~(1 << SREG_I);
/* And make sure that the saved context in the TCB /* And make sure that the saved context in the TCB
* is the same as the interrupt return context. * is the same as the interrupt return context.
@ -198,7 +198,7 @@ void up_schedule_sigaction(_TCB *tcb, sig_deliver_t sigdeliver)
tcb->xcp.regs[REG_PCL] = (uint16_t)up_sigdeliver & 0xff; tcb->xcp.regs[REG_PCL] = (uint16_t)up_sigdeliver & 0xff;
tcb->xcp.regs[REG_PCH] = (uint16_t)up_sigdeliver >> 8; tcb->xcp.regs[REG_PCH] = (uint16_t)up_sigdeliver >> 8;
tcb->xcp.regs[REG_SREG] |= (1 << SREG_I); tcb->xcp.regs[REG_SREG] &= ~(1 << SREG_I);
} }
irqrestore(flags); irqrestore(flags);

6
arch/avr/src/avr32/up_initialstate.c
View File

@ -121,10 +121,10 @@ void up_initial_state(_TCB *tcb)
/* Enable or disable interrupts, based on user configuration */ /* Enable or disable interrupts, based on user configuration */
# ifdef CONFIG_SUPPRESS_INTERRUPTS #ifdef CONFIG_SUPPRESS_INTERRUPTS
xcp->regs[REG_SR] = avr32_sr() | AVR32_SR_GM_MASK; xcp->regs[REG_SR] = avr32_sr() | AVR32_SR_GM_MASK;
# else #else
xcp->regs[REG_SR] = avr32_sr() & ~AVR32_SR_GM_MASK; xcp->regs[REG_SR] = avr32_sr() & ~AVR32_SR_GM_MASK;
# endif #endif
} }

154
arch/avr/src/common/up_assert.c Normal file
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@ -0,0 +1,154 @@
/****************************************************************************
* arch/avr/src/common/up_assert.c
*
* Copyright (C) 2010-2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdlib.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include <arch/board/board.h>
#include "up_arch.h"
#include "os_internal.h"
#include "up_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* The following is just intended to keep some ugliness out of the mainline
* code. We are going to print the task name if:
*
* CONFIG_TASK_NAME_SIZE > 0 && <-- The task has a name
* (defined(CONFIG_DEBUG) || <-- And the debug is enabled (lldbg used)
* defined(CONFIG_ARCH_STACKDUMP)) <-- Or lib_lowprintf() is used
*/
#undef CONFIG_PRINT_TASKNAME
#if CONFIG_TASK_NAME_SIZE > 0 && (defined(CONFIG_DEBUG) || defined(CONFIG_ARCH_STACKDUMP))
# define CONFIG_PRINT_TASKNAME 1
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: _up_assert
****************************************************************************/
static void _up_assert(int errorcode) /* __attribute__ ((noreturn)) */
{
/* Are we in an interrupt handler or the idle task? */
if (current_regs || ((_TCB*)g_readytorun.head)->pid == 0)
{
(void)irqsave();
for(;;)
{
#ifdef CONFIG_ARCH_LEDS
up_ledon(LED_PANIC);
up_mdelay(250);
up_ledoff(LED_PANIC);
up_mdelay(250);
#endif
}
}
else
{
exit(errorcode);
}
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_assert
****************************************************************************/
void up_assert(const uint8_t *filename, int lineno)
{
#ifdef CONFIG_PRINT_TASKNAME
_TCB *rtcb = (_TCB*)g_readytorun.head;
#endif
up_ledon(LED_ASSERTION);
#ifdef CONFIG_PRINT_TASKNAME
lldbg("Assertion failed at file:%s line: %d task: %s\n",
filename, lineno, rtcb->name);
#else
lldbg("Assertion failed at file:%s line: %d\n",
filename, lineno);
#endif
up_dumpstate();
_up_assert(EXIT_FAILURE);
}
/****************************************************************************
* Name: up_assert_code
****************************************************************************/
void up_assert_code(const uint8_t *filename, int lineno, int errorcode)
{
#ifdef CONFIG_PRINT_TASKNAME
_TCB *rtcb = (_TCB*)g_readytorun.head;
#endif
up_ledon(LED_ASSERTION);
#ifdef CONFIG_PRINT_TASKNAME
lldbg("Assertion failed at file:%s line: %d task: %s error code: %d\n",
filename, lineno, rtcb->name, errorcode);
#else
lldbg("Assertion failed at file:%s line: %d error code: %d\n",
filename, lineno, errorcode);
#endif
up_dumpstate();
_up_assert(errorcode);
}

16
arch/mips/src/pic32mx/pic32mx-config.h
View File

@ -33,8 +33,8 @@
* *
************************************************************************************/ ************************************************************************************/
#ifndef __ARCH_MIPS_SRC_LPC17XX_LPC17_PIC32_H #ifndef __ARCH_MIPS_SRC_PIC32MX_PIC32MX_PIC32_H
#define __ARCH_MIPS_SRC_LPC17XX_LPC17_PIC32_H #define __ARCH_MIPS_SRC_PIC32MX_PIC32MX_PIC32_H
/************************************************************************************ /************************************************************************************
* Included Files * Included Files
@ -511,7 +511,7 @@
/* Are any UARTs enabled? */ /* Are any UARTs enabled? */
#undef HAVE_UART_DEVICE #undef HAVE_UART_DEVICE
#if defined(CONFIG_PIC32MX_UART1) || defined(CONFIG_LPC17_UART1) #if defined(CONFIG_PIC32MX_UART1) || defined(CONFIG_PIC32MX_UART1)
# define HAVE_UART_DEVICE 1 # define HAVE_UART_DEVICE 1
#endif #endif
@ -522,7 +522,7 @@
#if defined(CONFIG_UART1_SERIAL_CONSOLE) && defined(CONFIG_PIC32MX_UART1) #if defined(CONFIG_UART1_SERIAL_CONSOLE) && defined(CONFIG_PIC32MX_UART1)
# undef CONFIG_UART2_SERIAL_CONSOLE # undef CONFIG_UART2_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1 # define HAVE_SERIAL_CONSOLE 1
#elif defined(CONFIG_UART2_SERIAL_CONSOLE) && defined(CONFIG_LPC17_UART2) #elif defined(CONFIG_UART2_SERIAL_CONSOLE) && defined(CONFIG_PIC32MX_UART2)
# undef CONFIG_UART1_SERIAL_CONSOLE # undef CONFIG_UART1_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1 # define HAVE_SERIAL_CONSOLE 1
#else #else
@ -534,11 +534,11 @@
/* Device Configuration *************************************************************/ /* Device Configuration *************************************************************/
/* DEVCFG3 */ /* DEVCFG3 */
#ifndef CONFIG_PIC32MX_USERID /* User ID */ #ifndef CONFIG_PIC32MX_USERID /* User ID */
# define CONFIG_PIC32MX_USERID 0x584e /* "NutX" */ # define CONFIG_PIC32MX_USERID 0x584e /* "NutX" */
#endif #endif
#ifndef CONFIG_PIC32MX_SRSSEL /* Shadow register interrupt priority */ #ifndef CONFIG_PIC32MX_SRSSEL /* Shadow register interrupt priority */
# define CONFIG_PIC32MX_SRSSEL INT_ICP_MIN_PRIORITY # define CONFIG_PIC32MX_SRSSEL INT_ICP_MIN_PRIORITY
#endif #endif
@ -771,4 +771,4 @@
* Public Functions * Public Functions
************************************************************************************/ ************************************************************************************/
#endif /* __ARCH_MIPS_SRC_LPC17XX_LPC17_PIC32_H */ #endif /* __ARCH_MIPS_SRC_PIC32MX_PIC32MX_PIC32_H */

18
configs/micropendous3/README.txt
View File

@ -321,23 +321,23 @@ Micropendous3 Configuration Options
CONFIG_AVR_TIMER2=n CONFIG_AVR_TIMER2=n
CONFIG_AVR_TIMER3=n CONFIG_AVR_TIMER3=n
CONFIG_AVR_SPI=n CONFIG_AVR_SPI=n
CONFIG_AVR_UART1=y CONFIG_AVR_USART1=y
CONFIG_AVR_ANACOMP=n CONFIG_AVR_ANACOMP=n
CONFIG_AVR_ADC=n CONFIG_AVR_ADC=n
CONFIG_AVR_TWI=n CONFIG_AVR_TWI=n
AT90USB specific device driver settings AT90USB specific device driver settings
CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the CONFIG_USARTn_SERIAL_CONSOLE - selects the USARTn for the
console and ttys0 (default is the UART0). console and ttys0 (default is no serial console).
CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received. CONFIG_USARTn_RXBUFSIZE - Characters are buffered as received.
This specific the size of the receive buffer This specific the size of the receive buffer
CONFIG_UARTn_TXBUFSIZE - Characters are buffered before CONFIG_USARTn_TXBUFSIZE - Characters are buffered before
being sent. This specific the size of the transmit buffer being sent. This specific the size of the transmit buffer
CONFIG_UARTn_BAUD - The configure BAUD of the UART. Must be CONFIG_USARTn_BAUD - The configure BAUD of the USART. Must be
CONFIG_UARTn_BITS - The number of bits. Must be either 7 or 8. CONFIG_USARTn_BITS - The number of bits. Must be either 7 or 8.
CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity CONFIG_USARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
CONFIG_UARTn_2STOP - Two stop bits CONFIG_USARTn_2STOP - Two stop bits
Configurations Configurations
^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^

2
configs/micropendous3/include/board.h
View File

@ -50,6 +50,8 @@
/* Clocking *****************************************************************/ /* Clocking *****************************************************************/
#define BOARD_CPU_CLOCK 8000000 /* 8MHz */
/* LED definitions **********************************************************/ /* LED definitions **********************************************************/
#define LED_STARTED 0 #define LED_STARTED 0

36
configs/micropendous3/ostest/defconfig
View File

@ -52,6 +52,9 @@
# CONFIG_DRAM_SIZE - Describes the installed DRAM. # CONFIG_DRAM_SIZE - Describes the installed DRAM.
# CONFIG_DRAM_START - The start address of DRAM (physical) # CONFIG_DRAM_START - The start address of DRAM (physical)
# CONFIG_DRAM_END - Last address+1 of installed RAM # CONFIG_DRAM_END - Last address+1 of installed RAM
# CONFIG_ARCH_NOINTC - define if the architecture does not
# support an interrupt controller or otherwise cannot support
# APIs like up_enable_irq() and up_disable_irq().
# CONFIG_ARCH_IRQPRIO - The AT90USB supports interrupt prioritization # CONFIG_ARCH_IRQPRIO - The AT90USB supports interrupt prioritization
# CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt # CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt
# stack. If defined, this symbol is the size of the interrupt # stack. If defined, this symbol is the size of the interrupt
@ -80,6 +83,7 @@ CONFIG_BOARD_LOOPSPERMSEC=8079
CONFIG_DRAM_SIZE=(4*1024) CONFIG_DRAM_SIZE=(4*1024)
CONFIG_DRAM_START=0x800000 CONFIG_DRAM_START=0x800000
CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE) CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE)
CONFIG_ARCH_NOINTC=y
CONFIG_ARCH_IRQPRIO=n CONFIG_ARCH_IRQPRIO=n
CONFIG_ARCH_INTERRUPTSTACK=n CONFIG_ARCH_INTERRUPTSTACK=n
CONFIG_ARCH_STACKDUMP=y CONFIG_ARCH_STACKDUMP=y
@ -116,7 +120,7 @@ CONFIG_AVR_TIMER1=n
CONFIG_AVR_TIMER2=n CONFIG_AVR_TIMER2=n
CONFIG_AVR_TIMER3=n CONFIG_AVR_TIMER3=n
CONFIG_AVR_SPI=n CONFIG_AVR_SPI=n
CONFIG_AVR_UART1=y CONFIG_AVR_USART1=y
CONFIG_AVR_ANACOMP=n CONFIG_AVR_ANACOMP=n
CONFIG_AVR_ADC=n CONFIG_AVR_ADC=n
CONFIG_AVR_TWI=n CONFIG_AVR_TWI=n
@ -124,24 +128,24 @@ CONFIG_AVR_TWI=n
# #
# AT90USB specific serial device driver settings # AT90USB specific serial device driver settings
# #
# CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the # CONFIG_USARTn_SERIAL_CONSOLE - selects the USARTn for the
# console and ttys0 (default is the UART1). # console and ttys0 (default is the USART1).
# CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received. # CONFIG_USARTn_RXBUFSIZE - Characters are buffered as received.
# This specific the size of the receive buffer # This specific the size of the receive buffer
# CONFIG_UARTn_TXBUFSIZE - Characters are buffered before # CONFIG_USARTn_TXBUFSIZE - Characters are buffered before
# being sent. This specific the size of the transmit buffer # being sent. This specific the size of the transmit buffer
# CONFIG_UARTn_BAUD - The configure BAUD of the UART. Must be # CONFIG_USARTn_BAUD - The configure BAUD of the USART. Must be
# CONFIG_UARTn_BITS - The number of bits. Must be either 7 or 8. # CONFIG_USARTn_BITS - The number of bits. Must be either 7 or 8.
# CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity # CONFIG_USARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
# CONFIG_UARTn_2STOP - Two stop bits # CONFIG_USARTn_2STOP - Two stop bits
# #
CONFIG_UART1_SERIAL_CONSOLE=y CONFIG_USART1_SERIAL_CONSOLE=y
CONFIG_UART1_TXBUFSIZE=256 CONFIG_USART1_TXBUFSIZE=256
CONFIG_UART1_RXBUFSIZE=256 CONFIG_USART1_RXBUFSIZE=256
CONFIG_UART1_BAUD=115200 CONFIG_USART1_BAUD=115200
CONFIG_UART1_BITS=8 CONFIG_USART1_BITS=8
CONFIG_UART1_PARITY=0 CONFIG_USART1_PARITY=0
CONFIG_UART1_2STOP=0 CONFIG_USART1_2STOP=0
# #
# General build options # General build options

4
configs/micropendous3/src/up_boot.c
View File

@ -63,7 +63,7 @@
************************************************************************************/ ************************************************************************************/
/************************************************************************************ /************************************************************************************
* Name: at90usb_boardinitialize * Name: up_boardinitialize
* *
* Description: * Description:
* All AT90USB architectures must provide the following entry point. This entry * All AT90USB architectures must provide the following entry point. This entry
@ -72,7 +72,7 @@
* *
************************************************************************************/ ************************************************************************************/
void at90usb_boardinitialize(void) void up_boardinitialize(void)
{ {
/* Configure SSP chip selects if 1) at least one SSP is enabled, and 2) the weak /* Configure SSP chip selects if 1) at least one SSP is enabled, and 2) the weak
* function at90usb_spiinitialize() has been brought into the link. * function at90usb_spiinitialize() has been brought into the link.