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MM32F031F6 TIM2_PWM 對應PA0 PA1 PA2 PA3 輸出PWM信號

2018-3-26 11:25:06 4379 TIM2 PWM

0 ` #include "delay.h" #include "sys.h" #include "uart.h" #include "pwm.h" #include "led.h" // void tiM2_PWM_Init(u16 arr,u16 psc) { RCC->APB1ENR\|=RCC_APB1ENR_TIM2EN; RCC->AHBENR\|=0x7<<17; GPIOA->AFRL&=0x0000; GPIOA->AFRL=0x2222; GPIOA->CRL&=0XFFFF0000; GPIOA->CRL\|=GPIO_CRL_MODE3\|GPIO_CRL_CNF3_1; GPIOA->CRL\|=GPIO_CRL_MODE2\|GPIO_CRL_CNF2_1; GPIOA->CRL\|=GPIO_CRL_MODE1\|GPIO_CRL_CNF1_1; GPIOA->CRL\|=GPIO_CRL_MODE0\|GPIO_CRL_CNF0_1; TIM2->ARR=arr; TIM2->PSC=psc; TIM2->CCMR1=0X7878; TIM2->CCMR2=0X7878; TIM2->CCER\|=TIM_CCER_CC1E\|TIM_CCER_CC2E\|TIM_CCER_CC3E\|TIM_CCER_CC4E; TIM2->CR1=TIM_CR1_ARPE; TIM2->CR1\|=TIM_CR1_CEN; } int main(void) { u8 dir=1; u16led0pwmval=0; delay_init(); //uart_initwBaudRate(115200); //LED_Init(); RCC->CR\|=0x00000003; RCC->CFGR&=0xFFFFFFF0; TIM2_PWM_Init(99,0); TIM2->CCR1=10; TIM2->CCR2=30; TIM2->CCR3=60; TIM2->CCR4=90; while(1) { delay_ms(5); TIM2->CCR1++; if( TIM2->CCR1>=TIM2->ARR) {TIM2->CCR1=0x01;} TIM2->CCR2++; if( TIM2->CCR2>=TIM2->ARR) {TIM2->CCR2=0x01;} TIM2->CCR3++; if( TIM2->CCR3>=TIM2->ARR) {TIM2->CCR3=0x01;} TIM2->CCR4++; if( TIM2->CCR4>=TIM2->ARR) {TIM2->CCR4=0x01;} } } ` 0
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