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Add skeleton of AVR32 init

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2975 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2010-10-08 01:34:16 +00:00
parent 2c85634c39
commit 497c4187d2
8 changed files with 1187 additions and 37 deletions
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4
arch/arm/src/stm32/stm32_serial.c
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@ -1,7 +1,7 @@
/****************************************************************************
* arch/arm/src/stm32/stm32_serial.c
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -340,7 +340,7 @@ static inline uint32_t up_serialin(struct up_dev_s *priv, int offset)
static inline void up_serialout(struct up_dev_s *priv, int offset, uint32_t value)
{
putreg16(value, priv->usartbase + offset);
putreg32(value, priv->usartbase + offset);
}
/****************************************************************************

2
arch/avr/src/at91uc3/Make.defs
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@ -50,7 +50,7 @@ CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
# Required AT91UC3 files
CHIP_ASRCS =
CHIP_CSRCS =
CHIP_CSRCS = at91uc3_lowinit.c at91uc3_serial.c
# Configuration-dependent AT91UC3 files

125
arch/avr/src/at91uc3/at91uc3_config.h Executable file
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@ -0,0 +1,125 @@
/************************************************************************************
* arch/avr/src/at91uc3/at91uc3_config.h
*
* 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.
*
************************************************************************************/
#ifndef __ARCH_AVR_SRC_AT91UC3_AT91UC3_CONFIG_H
#define __ARCH_AVR_SRC_AT91UC3_AT91UC3_CONFIG_H
/************************************************************************************
* Included Files
************************************************************************************/
#include <nuttx/config.h>
#include "chip.h"
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/* USART can be configured as a number of different devices (Only UART is supported
* here now, that will be extended). Check for consistency between USART enable
* options.
*/
#if AVR32_NUSART < 1
# undef CONFIG_AVR32_USART0
# undef CONFIG_AVR32_USART1
# undef CONFIG_AVR32_USART2
#endif
#if AVR32_NUSART < 2
# undef CONFIG_AVR32_USART1
# undef CONFIG_AVR32_USART2
#endif
#if AVR32_NUSART < 3
# undef CONFIG_AVR32_USART2
#endif
#ifndef CONFIG_AVR32_USART0
# undef CONFIG_AVR32_USART0_RS232
# undef CONFIG_AVR32_USART0_SPI
#endif
#ifndef CONFIG_AVR32_USART1
# undef CONFIG_AVR32_USART1_RS232
# undef CONFIG_AVR32_USART1_SPI
#endif
#ifndef CONFIG_AVR32_USART2
# undef CONFIG_AVR32_USART2_RS232
# undef CONFIG_AVR32_USART2_SPI
#endif
/* Is any UART configured? */
#if defined(CONFIG_AVR32_USART0_RS232) || \
defined(CONFIG_AVR32_USART1_RS232) || \
defined(CONFIG_AVR32_USART2_RS232)
# define HAVE_RS232_DEVICE
#else
# undef HAVE_RS232_DEVICE
#endif
/* Is there a serial console? */
#if defined(CONFIG_USART0_SERIAL_CONSOLE) && defined(CONFIG_AVR32_USART0_RS232)
# undef CONFIG_USART1_SERIAL_CONSOLE
# undef CONFIG_USART2_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#elif defined(CONFIG_USART1_SERIAL_CONSOLE) && defined(CONFIG_AVR32_USART10_RS232)
# undef CONFIG_USART0_SERIAL_CONSOLE
# undef CONFIG_USART2_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#elif defined(CONFIG_USART2_SERIAL_CONSOLE) && defined(CONFIG_AVR32_USART20_RS232)
# undef CONFIG_USART0_SERIAL_CONSOLE
# undef CONFIG_USART1_SERIAL_CONSOLE
# define HAVE_SERIAL_CONSOLE 1
#else
# undef CONFIG_USART0_SERIAL_CONSOLE
# undef CONFIG_USART1_SERIAL_CONSOLE
# undef CONFIG_USART2_SERIAL_CONSOLE
# undef HAVE_SERIAL_CONSOLE
#endif
/************************************************************************************
* Public Types
************************************************************************************/
/************************************************************************************
* Public Data
************************************************************************************/
/************************************************************************************
* Public Functions
************************************************************************************/
#endif /* __ARCH_AVR_SRC_AT91UC3_AT91UC3_CONFIG_H */

21
arch/avr/src/at91uc3/at91uc3_internal.h
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@ -58,5 +58,26 @@
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: at91uc3_clkinit
*
* Description:
* Initialiaze clock/PLL settings per the definitions in the board.h file.
*
************************************************************************************/
extern void at91uc3_clkinitialize(void);
/************************************************************************************
* Name: at91uc3_boardinit
*
* Description:
* This function must be provided by the board-specific logic in the directory
* configs/<board-name>/up_boot.c.
*
************************************************************************************/
extern void at91uc3_boardinitialize(void);
#endif /* __ARCH_AVR_SRC_AVR32_AT91UC3_INTERNAL_H */

102
arch/avr/src/at91uc3/at91uc3_lowinit.c Normal file
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@ -0,0 +1,102 @@
/**************************************************************************
* arch/avr/src/at91uc3/at91uc3_lowinit.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 "at91uc3_config.h"
#include "up_internal.h"
#include "at91uc3_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 MCU clocking */
at91uc3_clkinitialize();
/* Perform early serial initialization (so that we will have debug output
* available as soon as possible.
*/
up_earlyserialinit();
/* Perform board-level initialization */
at91uc3_boardinitialize();
}

921
arch/avr/src/at91uc3/at91uc3_serial.c Normal file
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@ -0,0 +1,921 @@
/****************************************************************************
* arch/arm/src/stm32/avr32_serial.c
*
* Copyright (C) 2009 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 <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 "at91uc3_config.h"
#include "chip.h"
#include "at91uc3_usart.h"
#include "up_arch.h"
#include "up_internal.h"
#include "os_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/* Some sanity checks *******************************************************/
/* Is there a USART enabled? */
#ifndef HAVE_RS232_DEVICE
# error "No USARTs enabled as RS232 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_AVR32_USART1_RS232
# define TTYS1_DEV g_usart1port /* USART1 is ttyS1 */
# ifdef CONFIG_AVR32_USART2_RS232
# define TTYS2_DEV g_usart2port /* USART2 is ttyS2 */
# else
# undef TTYS2_DEV /* No ttyS2 */
# endif
# else
# ifdef CONFIG_AVR32_USART2_RS232
# define TTYS1_DEV g_usart2port /* USART2 is ttyS1 */
# else
# undef TTYS1_DEV /* No ttyS1 */
# endif
# undef TTYS2_DEV /* No ttyS2 */
# 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_AVR32_USART0_RS232
# define TTYS1_DEV g_usart0port /* USART0 is ttyS1 */
# ifdef CONFIG_AVR32_USART2_RS232
# define TTYS2_DEV g_usart2port /* USART2 is ttyS2 */
# else
# undef TTYS2_DEV /* No ttyS2 */
# endif
# else
# ifdef CONFIG_AVR32_USART2_RS232
# define TTYS1_DEV g_usart2port /* USART2 is ttyS1 */
# else
# undef TTYS1_DEV /* No ttyS1 */
# endif
# undef TTYS2_DEV /* No ttyS2 */
# endif
#elif defined(CONFIG_USART2_SERIAL_CONSOLE)
# define CONSOLE_DEV g_usart2port /* USART2 is console */
# define TTYS0_DEV g_usart2port /* USART2 is ttyS0 */
# ifdef CONFIG_AVR32_USART0_RS232
# define TTYS1_DEV g_usart0port /* USART0 is ttyS1 */
# ifdef CONFIG_AVR32_USART1_RS232
# define TTYS2_DEV g_usart1port /* USART1 is ttyS2 */
# else
# undef TTYS2_DEV /* No ttyS2 */
# endif
# else
# ifdef CONFIG_AVR32_USART1_RS232
# define TTYS1_DEV g_usart1port /* USART1 is ttyS1 */
# else
# undef TTYS1_DEV /* No ttyS1 */
# endif
# undef TTYS2_DEV /* No ttyS2 */
# endif
#endif
/****************************************************************************
* Private Types
****************************************************************************/
struct up_dev_s
{
uint32_t usartbase; /* Base address of USART registers */
uint32_t baud; /* Configured baud */
uint32_t ie; /* Saved interrupt mask bits value */
uint32_t sr; /* Saved status bits */
uint8_t irq; /* IRQ associated with this USART */
uint8_t parity; /* 0=none, 1=odd, 2=even */
uint8_t bits; /* Number of bits (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_AVR32_USART0_RS232
static char g_usart0rxbuffer[CONFIG_USART0_RXBUFSIZE];
static char g_usart0txbuffer[CONFIG_USART0_TXBUFSIZE];
#endif
#ifdef CONFIG_AVR32_USART1_RS232
static char g_usart1rxbuffer[CONFIG_USART1_RXBUFSIZE];
static char g_usart1txbuffer[CONFIG_USART1_TXBUFSIZE];
#endif
#ifdef CONFIG_AVR32_USART2_RS232
static char g_usart2rxbuffer[CONFIG_USART2_RXBUFSIZE];
static char g_usart2txbuffer[CONFIG_USART2_TXBUFSIZE];
#endif
/* This describes the state of the AVR32 USART0 ports. */
#ifdef CONFIG_AVR32_USART0_RS232
static struct up_dev_s g_usart0priv =
{
.usartbase = AVR32_USART0_BASE,
.baud = CONFIG_USART0_BAUD,
.irq = AVR32_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_AVR32_USART1_RS232
static struct up_dev_s g_usart1priv =
{
.usartbase = AVR32_USART1_BASE,
.baud = CONFIG_USART1_BAUD,
.irq = AVR32_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
/* This describes the state of the AVR32 USART2 port. */
#ifdef CONFIG_AVR32_USART2_RS232
static struct up_dev_s g_usart2priv =
{
.usartbase = AVR32_USART2_BASE,
.baud = CONFIG_USART2_BAUD,
.irq = AVR32_IRQ_USART2,
.parity = CONFIG_USART2_PARITY,
.bits = CONFIG_USART2_BITS,
.stopbits2 = CONFIG_USART2_2STOP,
};
static uart_dev_t g_usart2port =
{
.recv =
{
.size = CONFIG_USART2_RXBUFSIZE,
.buffer = g_usart2rxbuffer,
},
.xmit =
{
.size = CONFIG_USART2_TXBUFSIZE,
.buffer = g_usart2txbuffer,
},
.ops = &g_uart_ops,
.priv = &g_usart2priv,
};
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: up_serialin
****************************************************************************/
static inline uint32_t up_serialin(struct up_dev_s *priv, int offset)
{
return getreg32(priv->usartbase + offset);
}
/****************************************************************************
* Name: up_serialout
****************************************************************************/
static inline void up_serialout(struct up_dev_s *priv, int offset, uint32_t value)
{
putreg32(value, priv->usartbase + offset);
}
/****************************************************************************
* Name: up_restoreusartint
****************************************************************************/
static void up_restoreusartint(struct up_dev_s *priv, uint32_t ie)
{
uint32_t cr;
/* Save the interrupt mask */
priv->ie = ie;
/* And restore the interrupt state (see the interrupt enable/usage table above) */
#warning "Not Implemented"
}
/****************************************************************************
* Name: up_disableusartint
****************************************************************************/
static inline void up_disableusartint(struct up_dev_s *priv, uint16_t *ie)
{
if (ie)
{
#warning "Not Implemented"
}
/* Disable all interrupts */
up_restoreusartint(priv, 0);
}
/****************************************************************************
* 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)
{
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
#ifdef CONFIG_SUPPRESS_UART_CONFIG
uint32_t regval;
/* Configure STOP bits */
regval = uUSART_MR_MODE_NORMAL;
if (priv->stopbits2)
{
regval |= USART_MR_NBSTOP_2;
}
else
{
regval |= USART_MR_NBSTOP_1;
}
/* Configure parity */
switch (priv->parity)
{
case 0:
default:
regval |= USART_MR_PAR_NONE;
break;
case 1:
regval |= USART_MR_PAR_ODD;
break;
case 2:
regval |= USART_MR_PAR_EVEN;
break;
}
/* Configure the number of bits per word */
switch (priv->bits)
{
case 5:
regval |= USART_MR_CHRL_5BITS;
break;
case 6:
regval |= USART_MR_CHRL_6BITS;
break;
case 7:
regval |= USART_MR_CHRL_7BITS;
break;
case 8:
default:
regval |= USART_MR_CHRL_8BITS;
break;
case 9:
regval |= USART_MR_MODE9;
break;
}
regval = up_serialout(priv, AVR32_USART_MR_OFFSET, regval);
/* Enable interrupts at the UART */
#warning "Not Implemented"
/* priv->ie = */
/* Configure hardware flow control -- Not yet supported */
#warning "Not Implemented"
/* Configure the USART Baud Rate */
#warning "Not Implemented"
/* Enable Rx, Tx, and the USART */
#warning "Not Implemented"
#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;
uint32_t regval;
/* Disable all interrupts */
up_disableusartint(priv, NULL);
/* Disable Rx, Tx, and the UART */
#warning "Not Implemented"
}
/****************************************************************************
* 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;
int ret;
/* Attach and enable the IRQ */
ret = irq_attach(priv->irq, up_interrupt);
if (ret == OK)
{
/* Enable the interrupt (RX and TX interrupts are still disabled
* in the USART
*/
up_enable_irq(priv->irq);
}
return ret;
}
/****************************************************************************
* 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;
up_disable_irq(priv->irq);
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;
int passes;
bool handled;
#ifdef CONFIG_AVR32_USART0_RS232
if (g_usart0priv.irq == irq)
{
dev = &g_usart0port;
}
else
#endif
#ifdef CONFIG_AVR32_USART1_RS232
if (g_usart1priv.irq == irq)
{
dev = &g_usart1port;
}
else
#endif
#ifdef CONFIG_AVR32_USART2_RS232
if (g_usart2priv.irq == irq)
{
dev = &g_usart2port;
}
else
#endif
{
PANIC(OSERR_INTERNAL);
}
priv = (struct up_dev_s*)dev->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;
/* Get the masked USART status and clear the pending interrupts. */
#warning "Not Implemented"
/* Handle incoming, receive bytes (with or without timeout) */
#warning "Not Implemented"
if (false)
{
/* Received data ready... process incoming bytes */
uart_recvchars(dev);
handled = true;
}
/* Handle outgoing, transmit bytes */
#warning "Not Implemented"
if (false)
{
/* 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)
{
struct inode *inode = filep->f_inode;
struct uart_dev_s *dev = inode->i_private;
#ifdef CONFIG_USART_BREAKS
struct up_dev_s *priv = (struct up_dev_s*)dev->priv;
#endif
int ret = OK;
switch (cmd)
{
case TIOCSERGSTRUCT:
{
struct up_dev_s *user = (struct up_dev_s*)arg;
if (!user)
{
ret = -EINVAL;
}
else
{
memcpy(user, dev, sizeof(struct up_dev_s));
}
}
break;
default:
ret = -ENOTTY;
break;
}
return ret;
}
/****************************************************************************
* 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;
uint32_t dr;
/* Get the Rx byte */
#warning "Not Implemented"
/* Get the Rx byte plux error information. Return those in status */
#warning "Not Implemented"
priv->sr = 0;
/* Then return the actual received byte */
return dr & 0xff;
}
/****************************************************************************
* 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;
uint32_t ie;
ie = priv->ie;
if (enable)
{
/* Receive an interrupt when their is anything in the Rx data register (or an Rx
* timeout occurs).
*/
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
#ifdef CONFIG_USART_ERRINTS
#warning "Not Implemented"
#else
#warning "Not Implemented"
#endif
#endif
}
else
{
#warning "Not Implemented"
}
/* Then set the new interrupt state */
up_restoreusartint(priv, ie);
}
/****************************************************************************
* 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 "Not Implemented"
}
/****************************************************************************
* 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 "Not Implemented"
}
/****************************************************************************
* 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 "Not Implemented"
/* 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 "Not Implemented"
}
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 "Not Implemented"
}
/****************************************************************************
* 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.
*
****************************************************************************/
void up_earlyserialinit(void)
{
/* Disable all USARTS */
up_disableusartint(TTYS0_DEV.priv, NULL);
#ifdef TTYS1_DEV
up_disableusartint(TTYS1_DEV.priv, NULL);
#endif
#ifdef TTYS2_DEV
up_disableusartint(TTYS2_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
#ifdef TTYS2_DEV
(void)uart_register("/dev/ttyS2", &TTYS2_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;
uint16_t ie;
up_disableusartint(priv, &ie);
/* Check for LF */
if (ch == '\n')
{
/* Add CR */
up_lowputc('\r');
}
up_lowputc(ch);
up_restoreusartint(priv, ie);
#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 */
/**************************************************************************
* Name: up_lowputc
*
* Description:
* Output one byte on the serial console
*
**************************************************************************/
void up_lowputc(char ch)
{
#ifdef HAVE_SERIAL_CONSOLE
/* Wait until the TX data register is empty */
#warning "Not Implemented"
/* Then send the character */
#warning "Not Implemented"
#endif
}

25
arch/avr/src/avr32/up_nommuhead.S
View File

@ -55,7 +55,6 @@
.global _eronly /* Start of .data section in FLASH */
#endif
.global up_lowinit /* Perform low level initialization */
.global up_boardinit /* Low-level board initialization */
.global os_start /* NuttX entry point */
.global vectors /* Vector base address */
@ -63,20 +62,6 @@
* Macros
****************************************************************************/
#ifdef CONFIG_DEBUG
.macro showprogress, code
.endm
.macro doputc, code
mov r12, \code
mcall up_putc
.endm
#else
.macro showprogress, code
.endm
.macro doputc, code
.endm
#endif
/****************************************************************************
* OS Entry Point
****************************************************************************/
@ -105,7 +90,6 @@ __start:
/* Enable exception processing */
csrf AVR32_SR_EM_SHIFT
showprogress 'A'
/* Clear system BSS section */
@ -119,8 +103,6 @@ __start:
cp r0, r1 /* Finished? */
brlo 1b /* No... keep looping */
showprogress 'B'
/* Copy system .data sections to new home in RAM. */
#ifdef CONFIG_BOOT_RUNFROMFLASH
@ -136,7 +118,6 @@ __start:
cp r0, r1 /* Finished? */
brlo 3b /* No... keep looping */
showprogress 'C'
#endif
/* Clear the frame pointer and link register since this is the outermost
@ -150,12 +131,6 @@ __start:
mcall up_lowinit
doputc 'D'
/* Board specific early initialization */
mcall up_ledinit
/* Then jump to OS entry (will not return) */
rjmp os_start

24
arch/avr/src/common/up_internal.h
View File

@ -175,7 +175,7 @@ extern uint32_t *up_va2pte(uintptr_t vaddr);
# define up_pginitialize()
#endif /* CONFIG_PAGING */
/* Defined in up_allocateheap.c */
/* Defined in common/up_allocateheap.c or chip/xxx_allocateheap.c */
#if CONFIG_MM_REGIONS > 1
void up_addregion(void);
@ -183,7 +183,15 @@ void up_addregion(void);
# define up_addregion()
#endif
/* Defined in up_serial.c */
/* Defined in chip/xxx_lowinit.c. This function is called from the
* head.S file just before jumping to os_start(). This function
* performs whatever very low level initialization that is needed
* before the OS gets started (clocks, console, LEDs, etc.)
*/
extern void up_lowinit(void);
/* Defined in chip/xxx_serial.c */
#if CONFIG_NFILE_DESCRIPTORS > 0
extern void up_earlyserialinit(void);
@ -201,27 +209,25 @@ extern void lowconsole_init(void);
# define lowconsole_init()
#endif
/* Defined in up_timerisr.c */
/* Defined in chip/xxx_timerisr.c */
extern void up_timerinit(void);
/* Defined in up_irq.c */
/* Defined in chip/xxx_irq.c */
extern void up_maskack_irq(int irq);
/* Defined in board/up_leds.c */
/* Defined in configs/<board-name>/src/up_leds.c */
#ifdef CONFIG_ARCH_LEDS
extern void up_ledinit(void);
extern void up_ledon(int led);
extern void up_ledoff(int led);
#else
# define up_ledinit()
# define up_ledon(led)
# define up_ledoff(led)
#endif
/* Defined in board/up_network.c */
/* Defined in chip/xxx_ethernet.c */
#ifdef CONFIG_NET
extern void up_netinitialize(void);
@ -229,7 +235,7 @@ extern void up_netinitialize(void);
# define up_netinitialize()
#endif
/* Defined in board/up_ethernet.c */
/* Defined in chip/xxx_usbdev.c */
#ifdef CONFIG_USBDEV
extern void up_usbinitialize(void);