SysTick 滴答定时器
#include "stm32f10x.h" static GPIO_InitTypeDef GPIO_InitStructure; #define PB5OUT(n) *(volatile uint32_t *)(0x42000000+((uint32_t
滴答硬件定时器
#include "stm32f10x.h" static GPIO_InitTypeDef GPIO_InitStructure; #define PB5OUT(n) *(volatile uint32_t *)(0x42000000+((uint32_t