void PWM_Init()
{
? ? GPIO_InitTypeDef GPIO_InitStructure={0};
? ? TIM_OCInitTypeDef TIM_OCInitStructure={0};
? ? TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure={0};
?
? ? RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOE | RCC_APB2Periph_TIM1 | RCC_APB2Periph_AFIO, ENABLE );
?
? ? GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
? ? GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
? ? GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
? ? GPIO_Init( GPIOE, &GPIO_InitStructure );
? ? GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
? ? GPIO_Init( GPIOE, &GPIO_InitStructure );
? ? GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
? ? GPIO_Init( GPIOE, &GPIO_InitStructure );
? ? GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
? ? 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(jì)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 );
? ? TIM_OC2Init( TIM1, &TIM_OCInitStructure );
? ? TIM_OC3Init( TIM1, &TIM_OCInitStructure );
? ? TIM_OC4Init( TIM1, &TIM_OCInitStructure );? ? ? ?//配置比較輸出通道
?
? ? TIM_CtrlPWMOutputs(TIM1, ENABLE );? ? ? ? ? //高級(jí)定時(shí)器置位MOE
? ? TIM_OC1PreloadConfig( TIM1, TIM_OCPreload_Disable );
? ? TIM_OC2PreloadConfig( TIM1, TIM_OCPreload_Disable );
? ? TIM_OC3PreloadConfig( TIM1, TIM_OCPreload_Disable );
? ? TIM_OC4PreloadConfig( TIM1, TIM_OCPreload_Disable );? ? //禁止ccr預(yù)裝載
?
?
? ? TIM_ARRPreloadConfig( TIM1, ENABLE );? ? ? ? ? ?//開(kāi)啟核心計(jì)數(shù)器自動(dòng)重裝載
?
?
? ? TIM_Cmd( TIM1, ENABLE );? ? ? ?//開(kāi)啟核心計(jì)數(shù)器
?
}
?
?
?
int main(void)
{
? ? NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
? ? SystemCoreClockUpdate();
? ? Delay_Init();
? ? USART_Printf_Init(115200);? ??
? ? printf("SystemClk:%d\r\n",SystemCoreClock);
? ? printf( "ChipID:%08x\r\n", DBGMCU_GetCHIPID() );
? ? printf("This is printf example\r\n");
?
? ? PWM_Init();
? ? TIM1->CH1CVR = 2000;
? ? TIM1->CH2CVR = 4000;
? ? TIM1->CH3CVR = 6000;
? ? TIM1->CH4CVR = 8000;
?
? ? while(1)
? ? {
?
? ? }
}
這是復(fù)制那個(gè)大佬的代碼
