Timer3控制两路pwm输出驱动舵机，可是舵机不转，求大神~~

BigRayLee

写了Timer3控制两路pwm输出驱动舵机，可是舵机不转，求大神~~

[mw_shl_code=c,true] [/mw_shl_code] [mw_shl_code=c,true]void TIM3_PWM_Init(u16 arr,u16 psc) { RCC->APB2ENR|=1<<1; //TIM1?±?????? GPIOA->CRL&=0X00FFFFFF; GPIOA->CRL|=0XBB000000; GPIOA->ODR|=1<<6; GPIOA->ODR|=1<<7; TIM3->ARR=arr; TIM3->SC=psc; [/mw_shl_code] [mw_shl_code=c,true] TIM3->CCMR1|=0x0060; TIM3->CCMR1|=1<<3; TIM3->CCMR1|=0x6000; TIM3->CCMR1|=1<<11; TIM3->CCER|=1<<0; TIM3->CCER|=1<<4; TIM3->CR1=0x0080; TIM3->CR1|=0x0001; } [/mw_shl_code] [mw_shl_code=c,true]#ifndef __TIMER_H #define __TIMER_H #include "sys.h" #define LED0_PWM_VAL  TIM3->CCR1        #define LED1_PWM_VAL  TIM3->CCR2  void TIM3_PWM_Init(u16 arr,u16 psc); #endif[/mw_shl_code] [mw_shl_code=c,true] [/mw_shl_code] [mw_shl_code=c,true]int main(void) { uint8_t indexWave[] = {5,10,5,15,5,20,5,25},xxx=0;     Stm32_Clock_Init(9); delay_init(72);     LED_Init();   TIM3_PWM_Init(200,7199);    LED0_PWM_VAL=5;   LED1_PWM_VAL=5;   delay_ms(5000);     while(1) {     LED0_PWM_VAL=indexWave[xxx]; LED1_PWM_VAL=indexWave[xxx]; delay_ms(5000);     xxx++; if(xxx==8)xxx=0; }  } [/mw_shl_code] [mw_shl_code=c,true] [/mw_shl_code]

zuozhongkai

用示波器看一下输出的PWM波形，是否满足控制舵机的要求

BigRayLee

回复【2楼】zuozhongkai:
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谢谢~是使能端写错了~应该是APB1