请高手帮忙看一下，我是小白，用的是STM32F051C8T6的板子

stm18647293236 提问时间：2018-11-16 08:13 /

问答
是否解决:

请高手帮忙看一下，我是小白，用的是STM32F051C8T6的板子
（用下面的命令）生成了HEX文件，用ISP写入板子时没有报错，但是提示写入0KB，板子没有任何反应。是那里有问题？谢谢

main.c

#include "stm32f051.h"

/**
  * 主函数
  */
int main(void)
{
// 开启GPIOB 端口时钟
RCC_APB2ENR |= (1<<3);
RCC_AHB1ENR |= (0<<17);
RCC_AHB1ENR |= (0<<18);
RCC_AHB1ENR |= (0<<19);
RCC_AHB1ENR |= (0<<20);

GPIOA_MODER |= (1<<24);
GPIOA_OTYPER |= (1<<12);
GPIOA_OSPEEDR |=(1<<24) ;
GPIOA_PUPDR  |= (1<<25);

GPIOA_ODR &= ~(1<<11);
GPIOA_ODR &= ~(1<<12);
GPIOA_ODR &= ~(1<<13);
GPIOA_ODR &= ~(1<<14);
GPIOA_ODR &= ~(1<<15);

while(1);
}
void SystemInit(void)
{
}
/*********************************************END OF FILE**********************/

stm32f051.h

/*本文件用于添加寄存器地址及结构体定义*/
/*片上外设基地址  */
#define PERIPH_BASE          ((unsigned int)0x40000000)

/*AHB1 总线基地址 */
#define AHB1PERIPH_BASE    (PERIPH_BASE + 0x20000)
/*RCC外设基地址*/
#define RCC_BASE    (AHB1PERIPH_BASE + 0x1000)
/*RCC的AHB1时钟使能寄存器地址,强制转换成指针*/
#define RCC_AHB1ENR *(unsigned int*)(RCC_BASE+0x14)

/*AHB2 总线基地址 */
#define AHB2PERIPH_BASE    (PERIPH_BASE + 0x8000000)
/*GPIOA外设基地址*/
#define GPIOA_BASE          (AHB2PERIPH_BASE + 0x0000)
#define GPIOB_BASE          (AHB2PERIPH_BASE + 0x0400)
#define GPIOC_BASE          (AHB2PERIPH_BASE + 0x0800)
#define GPIOD_BASE          (AHB2PERIPH_BASE + 0x0C00)

/* GPIOB寄存器地址,强制转换成指针 */

#define GPIOA_MODER       *(unsigned int*)(GPIOA_BASE+0x00)
#define GPIOA_OTYPER    *(unsigned int*)(GPIOA_BASE+0x04)
#define GPIOA_OSPEEDR    *(unsigned int*)(GPIOA_BASE+0x08)
#define GPIOA_PUPDR       *(unsigned int*)(GPIOA_BASE+0x0C)
#define GPIOA_IDR       *(unsigned int*)(GPIOA_BASE+0x10)
#define GPIOA_ODR       *(unsigned int*)(GPIOA_BASE+0x14)
#define GPIOA_BSRR       *(unsigned int*)(GPIOA_BASE+0x18)
#define GPIOA_LCKR       *(unsigned int*)(GPIOA_BASE+0x1C)
#define GPIOA_AFRL       *(unsigned int*)(GPIOA_BASE+0x20)
#define GPIOA_AFRH       *(unsigned int*)(GPIOA_BASE+0x24)
#define GPIOA_BRR       *(unsigned int*)(GPIOA_BASE+0x28)