各位求助：
我用stm8的time1，其中CC3配置为俘获输入（遥控码接受），CC4配置为PWM输出，结果只要写入ARRH,ARRL时，就只能输出PWM，遥控码不能接收， 好像时基改变了，俘获值不对，无法识别遥控码：
程序如下：
//TIM1_CC1用做REMOTE input capture
TIM1_CCER2&=0xfe; //捕获关
TIM1_CCMR3=0x01; //输入捕获
TIM1_PSCRH=0x00; //分频,决定计数单位 fCK_PSC/( PSCR[15:0]+1)=8M/16=2us
TIM1_PSCRL=0x0f;
//TIM1_CNTRH = 0;
// TIM1_CNTRL = 0;
TIM1_CCER2|=0x02; ///下降沿
TIM1_CCER2|=0x01; ///使能捕获
TIM1_IER|=0x08; //允许中断
//TIM1_CR1_CEN=1; //使能time1
TIM1_CCMR4=0x60; //PWM MODE1 输出
TIM1_ARRH=0x00;
TIM1_ARRL=0x28; //12.5k=80us=2usx40
TIM1_CCR4H=0x00;
TIM1_CCR4L=0x14; //duty cycle=CCR/ARRx100
TIM1_CCER2|=0x10; //输出使能
TIM1_BKR|=0x80;
TIM1_CR1_CEN=1;
请帮忙 |
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