這是我抄的別人的代碼
void?PWM_Init()
{
????GPIO_InitTypeDef?GPIO_InitStructure={0};
????TIM_OCInitTypeDef?TIM_OCInitStructure={0};
????TIM_TimeBaseInitTypeDef?TIM_TimeBaseInitStructure={0};
????RCC_APB2PeriphClockCmd(?RCC_APB2Periph_GPIOA?|?RCC_APB2Periph_TIM1?|?RCC_APB2Periph_AFIO,?ENABLE?);
????GPIO_InitStructure.GPIO_Pin?=?GPIO_Pin_7;
????GPIO_InitStructure.GPIO_Mode?=?GPIO_Mode_AF_PP;
????GPIO_InitStructure.GPIO_Speed?=?GPIO_Speed_50MHz;
????GPIO_Init(?GPIOE,?&GPIO_InitStructure?);
????????????????????????????????????????????????//配置使用的IO
????GPIO_PinRemapConfig(GPIO_FullRemap_TIM1,?ENABLE);????//重映射IO
????TIM_TimeBaseInitStructure.TIM_Period?=?10000;
????TIM_TimeBaseInitStructure.TIM_Prescaler?=?0;
????TIM_TimeBaseInitStructure.TIM_ClockDivision?=?TIM_CKD_DIV1;
????TIM_TimeBaseInitStructure.TIM_CounterMode?=?TIM_CounterMode_CenterAligned1;
????TIM_TimeBaseInit(?TIM1,?&TIM_TimeBaseInitStructure);????//配置核心計數(shù)器工作模式
????TIM_OCInitStructure.TIM_OCMode?=?TIM_OCMode_PWM1;
????TIM_OCInitStructure.TIM_OutputState?=?TIM_OutputState_Enable;
????TIM_OCInitStructure.TIM_Pulse?=?5000;
????TIM_OCInitStructure.TIM_OCPolarity?=?TIM_OCPolarity_High;
????TIM_OC1Init(?TIM1,?&TIM_OCInitStructure?);
?????????????????????????????????????????????????????????//配置比較輸出通道
????TIM_CtrlPWMOutputs(TIM1,?ENABLE?);??????????//高級定時器置位MOE
????TIM_OC1PreloadConfig(?TIM1,?TIM_OCPreload_Disable?);
????TIM_OC1NPolarityConfig(TIM1,?1);
????????????????????????????????????????????????//禁止ccr預(yù)裝載
????TIM_ARRPreloadConfig(?TIM1,?ENABLE?);???????????//開啟核心計數(shù)器自動重裝載
????TIM_Cmd(?TIM1,?ENABLE?);???????//開啟核心計數(shù)器
}
int?main(void)
{
//????u8g2_t??u8g2;
????SetSysClockTo144_HSE();
????led_init();
????PWM_Init();
????TIM1->CH1CVR?=?0;
????TIM3_PWMOut_Init(?100,?48000-1,?50?);
????TIM4_PWMOut_Init(?100,?48000-1,?50?);
????TIM5_PWMOut_Init(?100,?48000-1,?50?);
????while(1)?{
????????led_loop();
????}
}
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CH32L103: 32位PDUSB低功耗單片機
