sergiotarxz/nuttx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Add skeleton of GPIO control logic

Browse Source 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2513 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2010-01-19 02:42:05 +00:00
parent fa2f463fd6
commit 543d02502e
3 changed files with 217 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/arm/src/sam3u/Make.defs
View File

@ -45,6 +45,6 @@ CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
up_usestack.c up_doirq.c up_hardfault.c up_svcall.c
CHIP_ASRCS =
CHIP_CSRCS = sam3u_clockconfig.c sam3u_irq.c sam3u_lowputc.c sam3u_start.c \
sam3u_timerisr.c
CHIP_CSRCS = sam3u_clockconfig.c sam3u_irq.c sam3u_lowputc.c sam3u_pio.c \
sam3u_start.c sam3u_timerisr.c

12
arch/arm/src/sam3u/sam3u_internal.h
View File

@ -66,12 +66,12 @@
* MM.. .... .... ....
*/
#define GPIO_CFG_SHIFT (14) /* Bits 14-15: GPIO mode */
#define GPIO_CFG_MASK (3 << GPIO_CNF_SHIFT)
# define GPIO_INPUT (0 << GPIO_CNF_SHIFT) /* Input */
# define GPIO_OUTPUT (1 << GPIO_CNF_SHIFT) /* Output */
# define GPIO_PERIPHA (2 << GPIO_CNF_SHIFT) /* Controlled by periph A signal */
# define GPIO_PERIPHB (3 << GPIO_CNF_SHIFT) /* Controlled by periph B signal */
#define GPIO_MODE_SHIFT (14) /* Bits 14-15: GPIO mode */
#define GPIO_MODE_MASK (3 << GPIO_MODE_SHIFT)
# define GPIO_INPUT (0 << GPIO_MODE_SHIFT) /* Input */
# define GPIO_OUTPUT (1 << GPIO_MODE_SHIFT) /* Output */
# define GPIO_PERIPHA (2 << GPIO_MODE_SHIFT) /* Controlled by periph A signal */
# define GPIO_PERIPHB (3 << GPIO_MODE_SHIFT) /* Controlled by periph B signal */
/* These bits set the configuration of the pin:
* ..CC C... .... ....

209
arch/arm/src/sam3u/sam3u_pio.c Executable file
View File

@ -0,0 +1,209 @@
/****************************************************************************
* arch/arm/src/sam3u/sam3u_pio.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 <stdint.h>
#include <time.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/arch.h>
#include <arch/board/board.h>
#include "up_internal.h"
#include "up_arch.h"
#include "chip.h"
#include "sam3u_internal.h"
#include "sam3u_pio.h"
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/************************************************************************************
* Name: sam3u_configinput
*
* Description:
* Configure a GPIO input pin based on bit-encoded description of the pin.
*
************************************************************************************/
static inline int sam3u_configinput(uint16_t cfgset)
{
#warning "Not implemented"
return -ENOSYS;
}
/************************************************************************************
* Name: sam3u_configoutput
*
* Description:
* Configure a GPIO output pin based on bit-encoded description of the pin.
*
************************************************************************************/
static inline int sam3u_configoutput(uint16_t cfgset)
{
#warning "Not implemented"
return -ENOSYS;
}
/************************************************************************************
* Name: sam3u_configperipha
*
* Description:
* Configure a GPIO pin driven by a peripheral A signal based on bit-encoded
* description of the pin.
*
************************************************************************************/
static inline int sam3u_configperipha(uint16_t cfgset)
{
#warning "Not implemented"
return -ENOSYS;
}
/************************************************************************************
* Name: sam3u_configperipha
*
* Description:
* Configure a GPIO pin driven by a peripheral A signal based on bit-encoded
* description of the pin.
*
************************************************************************************/
static inline int sam3u_configperiphb(uint16_t cfgset)
{
#warning "Not implemented"
return -ENOSYS;
}
/****************************************************************************
* Global Functions
****************************************************************************/
/************************************************************************************
* Name: sam3u_configgpio
*
* Description:
* Configure a GPIO pin based on bit-encoded description of the pin.
*
************************************************************************************/
int sam3u_configgpio(uint16_t cfgset)
{
int ret;
switch (cfgset & GPIO_MODE_MASK)
{
case GPIO_INPUT:
ret = sam3u_configinput(cfgset);
break;
case GPIO_OUTPUT:
ret = sam3u_configoutput(cfgset);
break;
case GPIO_PERIPHA:
ret = sam3u_configperipha(cfgset);
break;
case GPIO_PERIPHB:
ret = sam3u_configperiphb(cfgset);
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
/************************************************************************************
* Name: sam3u_gpiowrite
*
* Description:
* Write one or zero to the selected GPIO pin
*
************************************************************************************/
void sam3u_gpiowrite(uint16_t pinset, bool value)
{
#warning "Not implemented"
}
/************************************************************************************
* Name: sam3u_gpioread
*
* Description:
* Read one or zero from the selected GPIO pin
*
************************************************************************************/
bool sam3u_gpioread(uint16_t pinset)
{
#warning "Not implemented"
return false;
}
/************************************************************************************
* Function: sam3u_dumpgpio
*
* Description:
* Dump all GPIO registers associated with the port of the provided pin description.
*
************************************************************************************/
#ifdef CONFIG_DEBUG
int sam3u_dumpgpio(uint16_t pinset, const char *msg)
{
#warning "Not implemented"
return -ENOSYS;
}
#endif