TIM2 四路占空比可调的PWM

HHHH · 发表于 2015-11-13 21:01:52

void PWM_TIM2_GPIO_Init()
{
RCC->APB1ENR|=1<<0;
RCC->APB2ENR|=1<<2;
GPIOA->CRL&=0XFFFF0000;
GPIOA->CRL|=0X0000BBBB;
}

void PWM_TIM2_Init(u16 PWM_Duty_1,u16 PWM_Duty_2,u16 PWM_Duty_3,u16 PWM_Duty_4)
{

TIM2->ARR=999;
TIM2->SC=10;

TIM2->CCMR1 |=6<<4;
TIM2->CCR1=PWM_Duty_1;
TIM2->CCMR1 |=6<<12;
TIM2->CCR2=PWM_Duty_2;
TIM2->CCMR2 |=6<<4;
TIM2->CCR3=PWM_Duty_3;
TIM2->CCMR2 |=6<<12;
TIM2->CCR4=PWM_Duty_4;

TIM2->CCER|=1<<0;
TIM2->CCER|=1<<4;
TIM2->CCER|=1<<8;
TIM2->CCER|=1<<12;

TIM2->CR1=0x0080;
TIM2->CR1|=0x01;
}