优雅的利用define来进行STM32外设初始化

1
#ifndef __LED_BLINK_H
2
#define __LED_BLINK_H
3

4
#include "stm32f4xx_hal.h"
5
#include "main.h"
6
#include "type_def.h"
7

8
//only chane these two lines
9
#define LED_BLINK_PORT_GROUP  E
10
#define LED_BLINK_PIN GPIO_PIN_8
11

12
#define GPIO_FUNC_PORT(x) GPIO##x
13
#define GPIO_MACRO_PORT(x) _GPIO##x
14
#define EXP_MACRO(x,y) x(y)
15

16
void LED_Blink_Task(void *argument);
17

18
#define LED_BLINK_GPIO_PORT GPIO_FUNC_PORT(LED_BLINK_PORT)
19
#define HAL_GPIO_CLK_ENABLE(c) __HAL_RCC##c##_CLK_ENABLE();
20
#define BLINK_LED_GPIO_CLK_ENABLE() EXP_MACRO(HAL_GPIO_CLK_ENABLE, EXP_MACRO(GPIO_MACRO_PORT, LED_BLINK_PORT_GROUP));
21
#define LED_BLINK_PORT  EXP_MACRO(GPIO_FUNC_PORT, LED_BLINK_PORT_GROUP)
22

23

24
#endif

1
#include "main.h"
2
#include "led_blink.h"
3
#include "cmsis_os.h"
4

5
void LED_Blink_Task(void *argument)
6
{
7
    GPIO_InitTypeDef GPIO_InitStruct = {0};
8

9
    BLINK_LED_GPIO_CLK_ENABLE();
10
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
11
    GPIO_InitStruct.Pin = LED_BLINK_PIN;
12
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
13
    GPIO_InitStruct.Pull = GPIO_NOPULL;
14
    HAL_GPIO_Init(LED_BLINK_PORT, &GPIO_InitStruct);
15
    /* USER CODE BEGIN LED_Blink_Task */
16
    LOGI("LED_Blink_Task Start");
17

18
    /* Infinite loop */
19
    for (;;)
20
    {
21
        HAL_GPIO_TogglePin(LED_BLINK_PORT, LED_BLINK_PIN);
22
        osDelay(100);
23
    }
24
    /* USER CODE END LED_Blink_Task */
25
}