c
复制代码
#include "main.h"
#include "stdlib.h"
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
// 自定义abc引脚
#define A_PIN GPIO_PIN_1
#define B_PIN GPIO_PIN_2
#define C_PIN GPIO_PIN_0
//y0到y7输出
void segment(char c){
if(c == 'a'){
GPIOB->BRR = A_PIN | B_PIN | C_PIN;
}
else if(c == 'b'){
GPIOB->BSRR = A_PIN;
GPIOB->BRR = B_PIN | C_PIN;
}
else if(c == 'c'){
GPIOB->BSRR = B_PIN;
GPIOB->BRR = A_PIN | C_PIN;
}
else if(c == 'd'){
GPIOB->BSRR = A_PIN|B_PIN ;
GPIOB->BRR = C_PIN;
}
else if(c == 'e'){
GPIOB->BSRR = C_PIN;
GPIOB->BRR = A_PIN | B_PIN;
}
else if(c == 'f'){
GPIOB->BSRR = A_PIN| C_PIN;
GPIOB->BRR = B_PIN ;
}
else if(c == 'g'){
GPIOB->BSRR =B_PIN| C_PIN;
GPIOB->BRR = A_PIN ;
}
else if(c == 'p'){
GPIOB->BSRR =A_PIN |B_PIN| C_PIN;
}
}
char segment_list[]={'a','b','c','d','e','f','g','p'};
int main(void)
{
HAL_Init();
SystemClock_Config();
MX_GPIO_Init();
while (1)
{
for(int i=0;i<=7;i++){
segment(segment_list[i]);
HAL_Delay(500);
}
}
}
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
/** Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
Error_Handler();
}
}
/**
* @brief GPIO Initialization Function
* @param None
* @retval None
*/
static void MX_GPIO_Init(void)
{
GPIO_InitTypeDef GPIOInitStruct = {0}; // 初始化 GPIO 结构体
// 使能 GPIO 端口时钟
__HAL_RCC_GPIOB_CLK_ENABLE();
// 设置 GPIO 的通用配置
GPIOInitStruct.Mode = GPIO_MODE_OUTPUT_PP; // 设置为推挽输出模式
GPIOInitStruct.Pull = GPIO_NOPULL; // 不使用上拉或下拉
GPIOInitStruct.Speed = GPIO_SPEED_FREQ_LOW; // 设置为低速
// 配置 GPIOB 端口的所有引脚
GPIOInitStruct.Pin = GPIO_PIN_All; // 指定所有引脚
HAL_GPIO_Init(GPIOB, &GPIOInitStruct); // 初始化配置
}
void Error_Handler(void)
{
/* USER CODE BEGIN Error_Handler_Debug */
/* User can add his own implementation to report the HAL error return state */
/* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
