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191问答库 > 单片机STM32，寄存器编程控制PB0输出为0，需要使用哪些寄存器？

单片机STM32，寄存器编程控制PB0输出为0，需要使用哪些寄存器？

希望能明白解释谢谢

2025-03-16 17:31:23

推荐回答（1个）

回答1：

首先开时钟，PB0的话要开PB端口时钟，RCC->APB2ENR |= 1<<2;
然后就是配置GPIO端口的模式
这里配置成通用推挽10MHz，GPIOB->CRL &= 0xF<<0;GPIOB->CRL |= 1<<0;
然后就是控制了，GPIOB->BSRR |= 1<<0; //PB0输出1
GPIOB->BRR |= 1<<0; //PB0输出0
寄存器编程一定要多看手册，不然你都不知道该寄存器的每个位对应着什么功能

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