stm32f103-minimum: dd GPIO device driver example for STM32F103-Minimum. This chang adds the initialization needed by stm32f103-minimum board to support the NuttX GPIO Subsystem.
This commit is contained in:
Alan Carvalho de Assis
Gregory Nutt
parent
fb8cfe857e
commit
04eefd7c8b
@ -53,6 +53,10 @@ else
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CSRCS += stm32_userleds.c
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endif
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ifeq ($(CONFIG_DEV_GPIO),y)
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CSRCS += stm32_gpio.c
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endif
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ifeq ($(CONFIG_PWM),y)
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CSRCS += stm32_pwm.c
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endif
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@ -112,6 +112,15 @@ int stm32_bringup(void)
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#endif
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int ret = OK;
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#ifdef CONFIG_DEV_GPIO
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ret = stm32_gpio_initialize();
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if (ret < 0)
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{
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syslog(LOG_ERR, "Failed to initialize GPIO Driver: %d\n", ret);
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return ret;
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}
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#endif
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#ifdef CONFIG_MMCSD
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ret = stm32_mmcsd_initialize(MMCSD_MINOR);
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if (ret < 0)
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305
configs/stm32f103-minimum/src/stm32_gpio.c
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305
configs/stm32f103-minimum/src/stm32_gpio.c
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@ -0,0 +1,305 @@
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/****************************************************************************
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* configs/stm32f103-minimum/src/stm32_gpio.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Copyright (C) 2017 Alan Carvalho de Assis. All rights reserved.
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* Author: Alan Carvalho de Assis <acassis@gmail.com>
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*
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* Based on: configs/sim/src/sim_gpio.c
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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 <stdbool.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/clock.h>
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#include <nuttx/wdog.h>
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#include <nuttx/ioexpander/gpio.h>
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#include <arch/board/board.h>
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#include "chip.h"
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#include "stm32.h"
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#include "stm32f103_minimum.h"
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#if defined(CONFIG_DEV_GPIO) && !defined(CONFIG_GPIO_LOWER_HALF)
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct stm32gpio_dev_s
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{
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struct gpio_dev_s gpio;
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uint8_t id;
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bool value;
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};
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struct stm32gpint_dev_s
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{
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struct stm32gpio_dev_s stm32gpio;
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pin_interrupt_t callback;
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static int gpin_read(FAR struct gpio_dev_s *dev, FAR bool *value);
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static int gpout_write(FAR struct gpio_dev_s *dev, bool value);
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static int gpint_attach(FAR struct gpio_dev_s *dev,
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pin_interrupt_t callback);
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static int gpint_enable(FAR struct gpio_dev_s *dev, bool enable);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const struct gpio_operations_s gpin_ops =
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{
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.go_read = gpin_read,
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.go_write = NULL,
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.go_attach = NULL,
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.go_enable = NULL,
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};
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static const struct gpio_operations_s gpout_ops =
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{
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.go_read = gpin_read,
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.go_write = gpout_write,
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.go_attach = NULL,
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.go_enable = NULL,
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};
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static const struct gpio_operations_s gpint_ops =
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{
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.go_read = gpin_read,
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.go_write = NULL,
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.go_attach = gpint_attach,
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.go_enable = gpint_enable,
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};
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#if BOARD_NGPIOIN > 0
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/* This array maps the GPIO pins used as INPUT */
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static const uint32_t g_gpioinputs[BOARD_NGPIOIN] =
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{
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GPIO_IN1,
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};
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static struct stm32gpio_dev_s g_gpin[BOARD_NGPIOIN];
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#endif
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#if BOARD_NGPIOOUT
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/* This array maps the GPIO pins used as OUTPUT */
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static const uint32_t g_gpiooutputs[BOARD_NGPIOOUT] =
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{
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GPIO_OUT1,
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};
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static struct stm32gpio_dev_s g_gpout[BOARD_NGPIOOUT];
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#endif
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#if BOARD_NGPIOINT > 0
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/* This array maps the GPIO pins used as INTERRUPT INPUTS */
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static const uint32_t g_gpiointinputs[BOARD_NGPIOINT] =
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{
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GPIO_INT1,
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};
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static struct stm32gpint_dev_s g_gpint[BOARD_NGPIOINT];
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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static int stm32gpio_interrupt(int irq, void *context, void *arg)
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{
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FAR struct stm32gpint_dev_s *stm32gpint = (FAR struct stm32gpint_dev_s *)arg;
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DEBUGASSERT(stm32gpint != NULL && stm32gpint->callback != NULL);
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gpioinfo("Interrupt! callback=%p\n", stm32gpint->callback);
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stm32gpint->callback(&stm32gpint->stm32gpio.gpio);
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return OK;
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}
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static int gpin_read(FAR struct gpio_dev_s *dev, FAR bool *value)
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{
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FAR struct stm32gpio_dev_s *stm32gpio = (FAR struct stm32gpio_dev_s *)dev;
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DEBUGASSERT(stm32gpio != NULL && value != NULL);
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gpioinfo("Reading...\n");
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*value = stm32_gpioread(g_gpioinputs[stm32gpio->id]);
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return OK;
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}
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static int gpout_write(FAR struct gpio_dev_s *dev, bool value)
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{
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FAR struct stm32gpio_dev_s *stm32gpio = (FAR struct stm32gpio_dev_s *)dev;
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DEBUGASSERT(stm32gpio != NULL);
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gpioinfo("Writing %d\n", (int)value);
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stm32_gpiowrite(g_gpiooutputs[stm32gpio->id], value);
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return OK;
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}
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static int gpint_attach(FAR struct gpio_dev_s *dev,
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pin_interrupt_t callback)
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{
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FAR struct stm32gpint_dev_s *stm32gpint = (FAR struct stm32gpint_dev_s *)dev;
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gpioinfo("Attaching the callback\n");
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/* Make sure the interrupt is disabled */
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(void)stm32_gpiosetevent(g_gpiointinputs[stm32gpint->stm32gpio.id], false,
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false, false, NULL, NULL);
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gpioinfo("Attach %p\n", callback);
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stm32gpint->callback = callback;
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return OK;
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}
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static int gpint_enable(FAR struct gpio_dev_s *dev, bool enable)
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{
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FAR struct stm32gpint_dev_s *stm32gpint = (FAR struct stm32gpint_dev_s *)dev;
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if (enable)
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{
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if (stm32gpint->callback != NULL)
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{
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gpioinfo("Enabling the interrupt\n");
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/* Configure the interrupt for rising edge */
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(void)stm32_gpiosetevent(g_gpiointinputs[stm32gpint->stm32gpio.id],
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true, false, false, stm32gpio_interrupt,
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&g_gpint[stm32gpint->stm32gpio.id]);
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}
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}
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else
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{
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gpioinfo("Disable the interrupt\n");
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(void)stm32_gpiosetevent(g_gpiointinputs[stm32gpint->stm32gpio.id],
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false, false, false, NULL, NULL);
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}
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return OK;
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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: stm32_gpio_initialize
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*
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* Description:
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* Initialize GPIO drivers for use with /apps/examples/gpio
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*
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****************************************************************************/
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int stm32_gpio_initialize(void)
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{
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int i;
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int pincount = 0;
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#if BOARD_NGPIOIN > 0
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for (i = 0; i < BOARD_NGPIOIN; i++)
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{
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/* Setup and register the GPIO pin */
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g_gpin[i].gpio.gp_pintype = GPIO_INPUT_PIN;
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g_gpin[i].gpio.gp_ops = &gpin_ops;
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g_gpin[i].id = i;
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(void)gpio_pin_register(&g_gpin[i].gpio, pincount);
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/* Configure the pin that will be used as input */
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stm32_configgpio(g_gpioinputs[i]);
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pincount++;
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}
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#endif
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#if BOARD_NGPIOOUT > 0
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for (i = 0; i < BOARD_NGPIOOUT; i++)
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{
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/* Setup and register the GPIO pin */
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g_gpout[i].gpio.gp_pintype = GPIO_OUTPUT_PIN;
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g_gpout[i].gpio.gp_ops = &gpout_ops;
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g_gpout[i].id = i;
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(void)gpio_pin_register(&g_gpout[i].gpio, pincount);
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/* Configure the pin that will be used as output */
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stm32_configgpio(g_gpiooutputs[i]);
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pincount++;
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}
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#endif
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#if BOARD_NGPIOINT > 0
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for (i = 0; i < BOARD_NGPIOINT; i++)
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{
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/* Setup and register the GPIO pin */
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g_gpint[i].stm32gpio.gpio.gp_pintype = GPIO_INTERRUPT_PIN;
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g_gpint[i].stm32gpio.gpio.gp_ops = &gpint_ops;
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g_gpint[i].stm32gpio.id = i;
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(void)gpio_pin_register(&g_gpint[i].stm32gpio.gpio, pincount);
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/* Configure the pin that will be used as interrupt input */
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stm32_configgpio(g_gpiointinputs[i]);
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pincount++;
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}
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#endif
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return 0;
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}
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#endif /* CONFIG_DEV_GPIO && !CONFIG_GPIO_LOWER_HALF */
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@ -129,6 +129,18 @@
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#define GPIO_USB_PULLUP (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\
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GPIO_OUTPUT_SET|GPIO_PORTC|GPIO_PIN13)
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/* GPIO pins used by the GPIO Subsystem */
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#define BOARD_NGPIOIN 1 /* Amount of GPIO Input pins */
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#define BOARD_NGPIOOUT 1 /* Amount of GPIO Output pins */
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#define BOARD_NGPIOINT 1 /* Amount of GPIO Input w/ Interruption pins */
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#define GPIO_IN1 (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_PORTA|GPIO_PIN0)
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#define GPIO_OUT1 (GPIO_OUTPUT|GPIO_CNF_OUTPP|GPIO_MODE_50MHz|\
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GPIO_OUTPUT_SET|GPIO_PORTA|GPIO_PIN1)
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#define GPIO_INT1 (GPIO_INPUT|GPIO_CNF_INFLOAT|GPIO_PORTA|GPIO_PIN2)
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/************************************************************************************
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* Public Functions
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************************************************************************************/
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@ -155,6 +167,18 @@
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int stm32_bringup(void);
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/****************************************************************************
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* Name: stm32_gpio_initialize
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*
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* Description:
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* Initialize GPIO drivers for use with /apps/examples/gpio
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*
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****************************************************************************/
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#ifdef CONFIG_DEV_GPIO
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int stm32_gpio_initialize(void);
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#endif
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/************************************************************************************
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* Name: stm32_spidev_initialize
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*
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