#include "stm32f10x.h"int main(void)
{RCC->APB2ENR = 4;GPIOA->CRL = 3;GPIOA->ODR = 0xfffe;while (1){}
}
或者是
#include "stm32f10x.h"int main(void)
{/* 開啟GPIOA的時鐘 第2位置1*/RCC->APB2ENR |= 0x1 << 2;/* GPIOA_CRL的最后4位置 0011 */GPIOA->CRL &= ~(0x1 << 3);GPIOA->CRL &= ~(0x1 << 2);GPIOA->CRL |= 0x1 << 1;GPIOA->CRL |= 0x1 << 0;/* GPIOA_ODR的第0位置0 */GPIOA->ODR &= ~(0x1 << 0);while (1){}
}
或者是
#include "stm32f10x.h"int main(void)
{RCC->APB2ENR |= RCC_APB2ENR_IOPAEN;GPIOA->CRL &= ~GPIO_CRL_CNF0_1;GPIOA->CRL &= ~GPIO_CRL_CNF0_0;GPIOA->CRL |= GPIO_CRL_MODE0_1;GPIOA->CRL |= GPIO_CRL_MODE0_0;GPIOA->ODR &= ~GPIO_ODR_ODR0;while (1){}
}