car_fmw: straightforward refactoring of MCU GPIO example code
- Extract code to dedicated files, create more abstract interfaces - Remove meaningless comments
This commit is contained in:
Eugene Batalov
+9
-6
@@ -40,22 +40,25 @@ dircs=$(wildcard $(1)/*.c)
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dircs_to_prefxd_objs=\
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$(patsubst $(1)/%.c,$(BIN_DIR)/$(2)%.o,$(call dircs,$1))
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$(CAR_FMW_BIN): $(CAR_FMW_ELF)
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$(CAR_FMW_BIN): $(CAR_FMW_ELF) $(BIN_DIR)
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$(OBJ_COPY) -O binary $< $@
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$(CAR_FMW_ELF): $(CAR_FMW_OBJ) $(LIB_STM32F4D_OBJ) \
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$(LIB_CMSIS_OBJ) $(LIB_STDPERIPH_OBJ)
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$(LIB_CMSIS_OBJ) $(LIB_STDPERIPH_OBJ)
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$(CC) $(CFLAGS) $^ -T $(SRC_DIR)/stm32_flash.ld -o $@
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$(CAR_FMW_OBJ): $(BIN_DIR) $(call dircs_to_prefxd_objs,$(SRC_DIR))
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CAR_OBJ_PREFIX=car_
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$(CAR_FMW_OBJ): \
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$(call dircs_to_prefxd_objs,$(SRC_DIR),$(CAR_OBJ_PREFIX))
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$(LD_ALL_DEPS)
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$(BIN_DIR)/$(CAR_OBJ_PREFIX)%.o: $(SRC_DIR)/%.c \
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$(call dirhs,$(SRC_DIR))
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$(CC_ALL_DEPS)
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$(BIN_DIR):
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mkdir -p $(BIN_DIR)
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$(BIN_DIR)/%.o: $(SRC_DIR)/%.c
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$(CC_ALL_DEPS)
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flash: $(CAR_FMW_BIN)
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$(ST_DIR)/st-flash write $(CAR_FMW_BIN) 0x8000000
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@@ -0,0 +1,20 @@
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#include "stm32f4_discovery.h"
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#include "stm32f4xx_conf.h"
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t* file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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@@ -0,0 +1,58 @@
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#pragma once
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#include <stdbool.h>
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#include "stm32f4_discovery.h"
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#include "stm32f4xx_conf.h"
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#define CAR_LED_GPIO_PORT_CLOCK RCC_AHB1Periph_GPIOD
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#define CAR_LED_GPIO_PORT GPIOD
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#define CAR_LED_PIN_GREEN GPIO_Pin_12
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#define CAR_LED_PIN_ORANGE GPIO_Pin_13
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#define CAR_LED_PIN_RED GPIO_Pin_14
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#define CAR_LED_PIN_BLUE GPIO_Pin_15
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inline void leds_init(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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RCC_AHB1PeriphClockCmd(CAR_LED_GPIO_PORT_CLOCK, ENABLE);
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GPIO_InitStructure.GPIO_Pin = CAR_LED_PIN_GREEN
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| CAR_LED_PIN_ORANGE
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| CAR_LED_PIN_RED
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| CAR_LED_PIN_BLUE;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_Init(CAR_LED_GPIO_PORT, &GPIO_InitStructure);
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}
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typedef enum
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{
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LED_GREEN,
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LED_ORANGE,
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LED_RED,
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LED_BLUE
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} led_t;
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inline void led_set(led_t led, bool on)
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{
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int led_pin = CAR_LED_PIN_GREEN;
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switch(led) {
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case LED_ORANGE:
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led_pin = CAR_LED_PIN_ORANGE;
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break;
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case LED_RED:
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led_pin = CAR_LED_PIN_RED;
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break;
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case LED_BLUE:
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led_pin = CAR_LED_PIN_BLUE;
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break;
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}
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if (on)
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GPIO_SetBits(CAR_LED_GPIO_PORT, led_pin);
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else
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GPIO_ResetBits(CAR_LED_GPIO_PORT, led_pin);
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}
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@@ -0,0 +1,16 @@
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#pragma once
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#include "stm32f4_discovery.h"
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#include "stm32f4xx_conf.h"
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/**
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* @brief Delay Function.
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* @param nCount:specifies the Delay time length.
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* @retval None
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*/
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inline void Delay(__IO uint32_t nCount)
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{
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while(nCount--)
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{
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}
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}
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@@ -5,5 +5,5 @@ $(LIB_STDPERIPH_OBJ): \
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$(LD_ALL_DEPS)
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$(BIN_DIR)/$(LIB_STDPRPH_OBJ_PREFIX)%.o: $(LIB_STDPERIPH_DIR)/%.c \
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$(call dirhs, $(LIB_STDPERIPH_DIR))
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$(call dirhs,$(LIB_STDPERIPH_DIR))
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$(CC_ALL_DEPS)
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+21
-133
@@ -1,143 +1,31 @@
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/**
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******************************************************************************
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* @file IO_Toggle/main.c
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* @author MCD Application Team
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* @version V1.0.0
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* @date 19-September-2011
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* @brief Main program body
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******************************************************************************
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* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*
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* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
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******************************************************************************
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*/
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#include "car_leds.h"
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#include "delay.h"
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f4_discovery.h"
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#include "stm32f4xx_conf.h"
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/** @addtogroup STM32F4_Discovery_Peripheral_Examples
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* @{
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*/
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/** @addtogroup IO_Toggle
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* @{
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*/
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/* Private typedef -----------------------------------------------------------*/
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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void Delay(__IO uint32_t nCount);
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/* Private functions ---------------------------------------------------------*/
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/**
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* @brief Main program
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* @param None
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* @retval None
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*/
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int main(void)
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{
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/*!< At this stage the microcontroller clock setting is already configured,
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/*!< At this stage the microcontroller clock setting is already configured,
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this is done through SystemInit() function which is called from startup
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file (startup_stm32f4xx.s) before to branch to application main.
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To reconfigure the default setting of SystemInit() function, refer to
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system_stm32f4xx.c file
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system_stm32f4xx.c file
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*/
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/* GPIOD Periph clock enable */
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
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leds_init();
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/* Configure PD12, PD13, PD14 and PD15 in output pushpull mode */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13| GPIO_Pin_14| GPIO_Pin_15;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_Init(GPIOD, &GPIO_InitStructure);
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while (1)
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{
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/* PD12 to be toggled */
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GPIO_SetBits(GPIOD, GPIO_Pin_12);
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/* Insert delay */
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Delay(0x3FFFFF);
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/* PD13 to be toggled */
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GPIO_SetBits(GPIOD, GPIO_Pin_13);
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/* Insert delay */
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Delay(0x3FFFFF);
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/* PD14 to be toggled */
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GPIO_SetBits(GPIOD, GPIO_Pin_14);
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/* Insert delay */
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Delay(0x3FFFFF);
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/* PD15 to be toggled */
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GPIO_SetBits(GPIOD, GPIO_Pin_15);
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/* Insert delay */
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Delay(0x7FFFFF);
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GPIO_ResetBits(GPIOD, GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15);
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/* Insert delay */
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Delay(0xFFFFFF);
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}
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while (1)
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{
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led_set(LED_GREEN, true);
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Delay(0x3FFFFF);
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led_set(LED_ORANGE, true);
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Delay(0x3FFFFF);
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led_set(LED_RED, true);
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Delay(0x3FFFFF);
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led_set(LED_BLUE, true);
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Delay(0x7FFFFF);
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led_set(LED_GREEN, false);
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led_set(LED_ORANGE, false);
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led_set(LED_RED, false);
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led_set(LED_BLUE, false);
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Delay(0xFFFFFF);
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}
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}
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/**
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* @brief Delay Function.
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* @param nCount:specifies the Delay time length.
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* @retval None
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*/
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void Delay(__IO uint32_t nCount)
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{
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while(nCount--)
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{
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}
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}
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#ifdef USE_FULL_ASSERT
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/**
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* @brief Reports the name of the source file and the source line number
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* where the assert_param error has occurred.
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* @param file: pointer to the source file name
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* @param line: assert_param error line source number
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* @retval None
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*/
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void assert_failed(uint8_t* file, uint32_t line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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while (1)
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{
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}
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}
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#endif
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/**
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* @}
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*/
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/**
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* @}
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*/
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/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
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