Add skeleton of GPIO utilities
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2999 42af7a65-404d-4744-a932-0658087f49c3
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@ -51,8 +51,8 @@ CMN_CSRCS = up_assert.c up_allocateheap.c up_blocktask.c up_copystate.c \
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# Required AT91UC3 files
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CHIP_ASRCS =
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CHIP_CSRCS = at91uc3_clkinit.c at91uc3_irq.c at91uc3_lowconsole.c \
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at91uc3_lowinit.c at91uc3_serial.c
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CHIP_CSRCS = at91uc3_clkinit.c at91uc3_gpio.c at91uc3_irq.c \
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at91uc3_lowconsole.c at91uc3_lowinit.c at91uc3_serial.c
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# Configuration-dependent AT91UC3 files
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115
arch/avr/src/at91uc3/at91uc3_gpio.c
Normal file
115
arch/avr/src/at91uc3/at91uc3_gpio.c
Normal file
@ -0,0 +1,115 @@
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/**************************************************************************
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* arch/avr/src/at91uc3/at91uc3_gpio.c
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*
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* Copyright (C) 2010 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************/
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/**************************************************************************
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* Included Files
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**************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include "at91uc3_config.h"
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#include "up_internal.h"
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#include "at91uc3_internal.h"
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/**************************************************************************
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* Private Definitions
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**************************************************************************/
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/**************************************************************************
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* Private Types
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**************************************************************************/
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/**************************************************************************
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* Private Function Prototypes
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**************************************************************************/
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/**************************************************************************
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* Global Variables
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**************************************************************************/
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/**************************************************************************
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* Private Variables
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**************************************************************************/
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/**************************************************************************
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* Private Functions
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**************************************************************************/
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/**************************************************************************
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* Public Functions
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**************************************************************************/
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/************************************************************************************
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* Name: at91uc3_configgpio
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*
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* Description:
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* Configure a GPIO pin based on bit-encoded description of the pin.
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*
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************************************************************************************/
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int at91uc3_configgpio(uint32_t cfgset)
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{
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#warning "Not Implemented"
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return -ENOSYS;
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}
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/************************************************************************************
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* Name: at91uc3_gpiowrite
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*
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* Description:
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* Write one or zero to the selected GPIO pin
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*
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************************************************************************************/
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void at91uc3_gpiowrite(uint32_t pinset, bool value)
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{
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#warning "Not Implemented"
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}
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/************************************************************************************
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* Name: at91uc3_gpioread
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*
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* Description:
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* Read one or zero from the selected GPIO pin
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*
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************************************************************************************/
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bool at91uc3_gpioread(uint32_t pinset)
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{
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#warning "Not Implemented"
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return false;
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}
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@ -49,16 +49,103 @@
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* Pre-processor Definitions
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************************************************************************************/
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/* Bit-encoded input to at91uc3_configgpio() ****************************************/
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/* 32-bit Encoding:
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* xxxx xxxx xxxx xxxF MMIU VXXG PPPB BBBB
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*/
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/* Glitch Filter Enable:
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* .... .... .... ...F .... .... .... ....
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*/
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#define GPIO_GLITCH (1 << 16) /* Bit 16: Glitch filter enable */
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/* Interrupt modes (valid only if GPIO_INTR==1)
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* .... .... .... .... MM.. .... .... ....
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*/
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#define GPIO_INTMODE_SHIFT (14) /* Bits 14-15: Interrupt mode */
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#define GPIO_INTMODE_MASK (3 << GPIO_INTMODE_SHIFT)
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# define GPIO_INTMODE_BOTH (0 << GPIO_INTMODE_SHIFT)
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# define GPIO_INTMODE_RISING (1 << GPIO_INTMODE_SHIFT)
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# define GPIO_INTMODE_FALLING (2 << GPIO_INTMODE_SHIFT)
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/* Interrupt enable
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* .... .... .... .... ..I. .... .... ....
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*/
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#define GPIO_INTR (1 << 13) /* Bit 13: Interrupt enable */
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/* Pull-up enable
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* .... .... .... .... ...U .... .... ....
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*/
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#define GPIO_PULLUP (1 << 12) /* Bit 12: Pull-up enable */
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/* Output value (Valid only if GPIO_ENABLE==1 and GPIO_OUTPUT==1)
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* .... .... .... .... .... V... .... ....
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*/
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#define GPIO_VALUE (1 << 11) /* Bit 11: Output value */
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/* Peripheral MUX setting (valid only if GPIO_PERIPH)
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* .... .... .... .... .... .XX. .... ....
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*/
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#define GPIO_MUX_SHIFT (9) /* Bits 9-10: Peripheral MUX */
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#define GPIO_MUX_MASK (3 << GPIO_MUX_SHIFT)
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# define GPIO_MUX_0 (0 << GPIO_MUX_SHIFT) /* PMR0=0 PMR1=0 */
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# define GPIO_MUX_1 (1 << GPIO_MUX_SHIFT) /* PMR0=1 PMR1=0 */
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# define GPIO_MUX_2 (2 << GPIO_MUX_SHIFT) /* PMR0=0 PMR1=1 */
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# define GPIO_MUX_3 (3 << GPIO_MUX_SHIFT) /* PMR0=1 PMR1=1 */
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/* GPIO Enable (1) or Peripheral Enable (0)
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* .... .... .... .... .... ...G .... ....
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*/
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#define GPIO_ENABLE (1 << 8) /* Bit 8: GPIO enable */
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#define GPIO_PERIPH (0)
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/* Port Number
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* .... .... .... .... .... .... PPP. ....
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*/
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#define GPIO_PORT_SHIFT (5) /* Bits 5-7: Port number */
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#define GPIO_PORT_MASK (7 << GPIO_PORT_SHIFT)
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/* Pin number:
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* .... .... .... .... .... .... ...B BBBB
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*/
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#define GPIO_PIN_SHIFT (0) /* Bits 0-4: Port number */
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#define GPIO_PIN_MASK (0x1f << GPIO_PIN_SHIFT)
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/************************************************************************************
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* Public Types
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************************************************************************************/
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#ifndef __ASSEMBLY__
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/************************************************************************************
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* Inline Functions
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************************************************************************************/
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/************************************************************************************
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* Public Data
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************************************************************************************/
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#undef EXTERN
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#if defined(__cplusplus)
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#define EXTERN extern "C"
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extern "C" {
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#else
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#define EXTERN extern
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#endif
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/************************************************************************************
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* Public Functions
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* Public Function Prototypes
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************************************************************************************/
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/************************************************************************************
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@ -69,7 +156,7 @@
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*
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************************************************************************************/
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extern void up_clkinitialize(void);
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EXTERN void up_clkinitialize(void);
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/******************************************************************************
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* Name: usart_reset
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@ -79,7 +166,7 @@ extern void up_clkinitialize(void);
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*
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******************************************************************************/
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extern void usart_reset(uintptr_t usart_base);
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EXTERN void usart_reset(uintptr_t usart_base);
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/******************************************************************************
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* Name: usart_configure
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@ -102,7 +189,7 @@ void usart_configure(uintptr_t usart_base, uint32_t baud, unsigned int parity,
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*
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************************************************************************************/
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extern void up_consoleinit(void);
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EXTERN void up_consoleinit(void);
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/************************************************************************************
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* Name: up_boardinit
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@ -113,7 +200,43 @@ extern void up_consoleinit(void);
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*
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************************************************************************************/
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extern void up_boardinitialize(void);
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EXTERN void up_boardinitialize(void);
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/************************************************************************************
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* Name: at91uc3_configgpio
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*
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* Description:
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* Configure a GPIO pin based on bit-encoded description of the pin.
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*
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************************************************************************************/
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EXTERN int at91uc3_configgpio(uint32_t cfgset);
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/************************************************************************************
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* Name: at91uc3_gpiowrite
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*
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* Description:
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* Write one or zero to the selected GPIO pin
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*
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************************************************************************************/
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EXTERN void at91uc3_gpiowrite(uint32_t pinset, bool value);
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/************************************************************************************
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* Name: at91uc3_gpioread
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*
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* Description:
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* Read one or zero from the selected GPIO pin
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*
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************************************************************************************/
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EXTERN bool at91uc3_gpioread(uint32_t pinset);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __ARCH_AVR_SRC_AVR32_AT91UC3_INTERNAL_H */
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