STM32H743点亮LED灯

①按网上教程下载并安装好MDK-Keil，全程只需这一个调试软件；

②按网上教程配置好STM32H743的开发环境；

③准备好开发板STM32H743，准备好下载器ST-link，并将其连接好，配置好驱动；

④从官网下载好HAL标准库，新建工程，将所有的HAL库文件添加进工程，注意要添加头文件路径；

⑤编写main.c文件，点击编译、下载，STM32H743即可循环点亮LED灯。

附上main.c代码：
#include “main.h”
#include “gpio.h”

void SystemClock_Config(void);

int main(void)
{
HAL_Init(); //重置所有外围设备，初始化闪存接口和Systick
SystemClock_Config(); //配置系统时钟
MX_GPIO_Init(); //初始化所有配置的外围设备
while (1)
{
/* 操作寄存器实现 */
#if 0
GPIOB->ODR |= 0x0040;
HAL_Delay(500);
GPIOB->ODR &= ~0x0040;
HAL_Delay(500);
#endif

/* 调用库函数实现 */
#if 1
HAL_GPIO_WritePin(LED4_GPIO_Port, LED4_Pin, GPIO_PIN_RESET); //LED4 OFF
HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin, GPIO_PIN_SET); //LED1 ON
HAL_Delay(500);
HAL_GPIO_WritePin(LED1_GPIO_Port, LED1_Pin, GPIO_PIN_RESET); //LED1 OFF
HAL_GPIO_WritePin(LED2_GPIO_Port, LED2_Pin, GPIO_PIN_SET); //LED2 ON
HAL_Delay(500);
HAL_GPIO_WritePin(LED2_GPIO_Port, LED2_Pin, GPIO_PIN_RESET); //LED2 OFF
HAL_GPIO_WritePin(LED3_GPIO_Port, LED3_Pin, GPIO_PIN_SET); //LED3 ON
HAL_Delay(500);
HAL_GPIO_WritePin(LED3_GPIO_Port, LED3_Pin, GPIO_PIN_RESET); //LED3 OFF
HAL_GPIO_WritePin(LED4_GPIO_Port, LED4_Pin, GPIO_PIN_SET); //LED4 ON
HAL_Delay(500);
#endif
}
}

void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
MODIFY_REG(PWR->CR3, PWR_CR3_SCUEN, 0); //Supply configuration update enable
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); //Configure the main internal regulator output voltage

while ((PWR->D3CR & (PWR_D3CR_VOSRDY)) != PWR_D3CR_VOSRDY)
{

}

/* 初始化CPU、AHB和APB总线时钟 */

RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 4;
RCC_OscInitStruct.PLL.PLLN = 400;
RCC_OscInitStruct.PLL.PLLP = 2;
RCC_OscInitStruct.PLL.PLLQ = 2;
RCC_OscInitStruct.PLL.PLLR = 2;
RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_1;
RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
RCC_OscInitStruct.PLL.PLLFRACN = 0;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
Error_Handler();
}
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
|RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;

if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
{
Error_Handler();
}
}

void Error_Handler(void)
{

}