タイマ - 32ビットマイコン講座 for CRS @ ウィキ

タイマでPWMを使うときの雛形っぽいもの

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 | RCC_APB1Periph_TIM3 | RCC_APB1Periph_TIM4 | 
	RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA, ENABLE); 
 
GPIO_InitTypeDef gpioInit;
gpioInit.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3 | GPIO_Pin_6 | GPIO_Pin_7;
gpioInit.GPIO_Speed = GPIO_Speed_50MHz;
gpioInit.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &gpioInit);
 
TIM_TimeBaseInitTypeDef timerInitStructure;
TIM_TimeBaseStructInit(&timerInitStructure);
timerInitStructure.TIM_Prescaler = 288 - 1;
timerInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
timerInitStructure.TIM_Period = 999;
timerInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
timerInitStructure.TIM_RepetitionCounter = 0;
 
TIM_OCInitTypeDef outputChannelInit;
TIM_OCStructInit(&outputChannelInit);
outputChannelInit.TIM_OCMode = TIM_OCMode_PWM1;
outputChannelInit.TIM_Pulse = 0;
outputChannelInit.TIM_OutputState = TIM_OutputState_Enable;
outputChannelInit.TIM_OutputNState =TIM_OutputNState_Disable;
outputChannelInit.TIM_OCPolarity = TIM_OCPolarity_High;
 
    TIM_OC1Init(TIM2, &outputChannelInit);
    TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Enable);
    TIM_OC2Init(TIM2, &outputChannelInit);
    TIM_OC2PreloadConfig(TIM2, TIM_OCPreload_Enable);
    TIM_OC3Init(TIM2, &outputChannelInit);
    TIM_OC3PreloadConfig(TIM2, TIM_OCPreload_Enable);
    TIM_OC4Init(TIM2, &outputChannelInit);
    TIM_OC4PreloadConfig(TIM2, TIM_OCPreload_Enable);
 
    TIM_OC1Init(TIM3, &outputChannelInit);
    TIM_OC1PreloadConfig(TIM2, TIM_OCPreload_Enable);
    TIM_OC2Init(TIM3, &outputChannelInit);
    TIM_OC2PreloadConfig(TIM2, TIM_OCPreload_Enable);
 
    //TIM_CtrlPWMOutputs(TIM2, ENABLE);
    //TIM_CtrlPWMOutputs(TIM3, ENABLE);
 
	TIM_TimeBaseInit(TIM2, &timerInitStructure);
	TIM_Cmd(TIM2, ENABLE);
	TIM_TimeBaseInit(TIM3, &timerInitStructure);
	TIM_Cmd(TIM3, ENABLE);
 
 
	timerInitStructure.TIM_Prescaler = 72000 - 1;
	timerInitStructure.TIM_Period = 9;
	TIM_TimeBaseInit(TIM4, &timerInitStructure);
	TIM_ITConfig(TIM4, TIM_IT_Update, ENABLE);
	TIM_Cmd(TIM4, ENABLE);