59 lines
922 B
C
59 lines
922 B
C
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/*
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使用寄存器的方法点亮LED灯
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*/
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#include "stm32h750xx.h"
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/**
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* 主函数
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*/
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int main(void)
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{
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/*开启 GPIOB 时钟，使用外设时都要先开启它的时钟*/
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RCC_AHB4ENR |= (1<<1);
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/* LED 端口初始化 */
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/*GPIOB MODER0清空*/
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GPIOB_MODER &= ~0x03;
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/*PH10 MODER10 = 01b 输出模式*/
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GPIOB_MODER |= 1;
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/*GPIOB OTYPER0清空*/
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GPIOB_OTYPER &= ~1;
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/*PB0 OTYPER0 = 0b 推挽模式*/
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GPIOB_OTYPER |= 0;
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/*清空GPIOB OSPEEDR0*/
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GPIOB_OSPEEDR &= ~0x03;
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/*PB0 OSPEEDR0 = 0b 低速模式*/
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GPIOB_OSPEEDR |= 0;
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/*清空GPIOB PUPDR0*/
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GPIOB_PUPDR &= ~0x03;
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/*PB0 PUPDR0 = 01b 上拉模式*/
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GPIOB_PUPDR |= 1;
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/*PB0 BSRR寄存器的 BR0置1，使引脚输出低电平*/
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GPIOB_BSRR |= 1<<16;
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/*PH10 BSRR寄存器的 BS10置1，使引脚输出高电平*/
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//GPIOH_BSRR |= (1<<10);
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while(1);
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}
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// 函数为空，目的是为了骗过编译器不报错
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void SystemInit(void)
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{
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}
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/*********************************************END OF FILE**********************/
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