stm32定义TIM7定时器代码

解析：这个query需要生成STM32的TIM7定时器定义代码。 以下是STM32定义TIM7定时器的代码： ```c #include "stm32f10x.h" void TIM7_Init(u16 arr, u16 psc) { TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; NVIC_InitTypeDef NVIC_InitStructure; // 使能TIM7时钟 RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7, ENABLE); // 配置TIM7参数 TIM_TimeBaseStructure.TIM_Period = arr; // 自动重装载值 TIM_TimeBaseStructure.TIM_Prescaler = psc; // 预分频系数 TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; // 时钟分频因子 TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; // 向上计数模式 TIM_TimeBaseInit(TIM7, &TIM_TimeBaseStructure); // 使能TIM7更新中断 TIM_ITConfig(TIM7, TIM_IT_Update, ENABLE); // 配置NVIC中断优先级 NVIC_InitStructure.NVIC_IRQChannel = TIM7_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //抢占优先级0 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; //响应优先级1 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); // 使能TIM7 TIM_Cmd(TIM7, ENABLE); } ```