设置PWM对应引脚PA2![[QQ_1721613625998.png]]定时器2受APB1控制![[QQ_1721613709674.png]]配置时钟为72MHZ![[QQ_1721613757231.png]]HAL库定义PWM/*TIM2initfunction*/voidMX_TIM2_Init(void){/*USERCODEBEGINTIM2_Init0*//*USERCODEENDTI