电调脉宽和校准方法如下
脉宽行程
校准方法
配置代码如下
void TIM1_PWM_Init()
{
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
//GPIO端口配置
GPIO_InitTypeDef TWO_PWM;
TWO_PWM.GPIO_Pin = PWM1_P1 | PWM2_P2;
TWO_PWM.GPIO_Mode = GPIO_Mode_AF;
TWO_PWM.GPIO_OType = GPIO_OType_PP;
TWO_PWM.GPIO_PuPd = GPIO_PuPd_UP;
TWO_PWM.GPIO_Speed = GPIO_Speed_50MHz;
//复用功能开启
GPIO_PinAFConfig(GPIOA, GPIO_PinSource8, GPIO_AF_TIM1);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_TIM1);
GPIO_Init(GPIOA, &TWO_PWM);
//定时器初始化
TIM_TimeBaseInitTypeDef TIM1_BASEInit;
TIM1_BASEInit.TIM_Period = (2100 - 1); //1000 000/2000 = 500hz
TIM1_BASEInit.TIM_Prescaler = (180 - 1); //180分频 1MHZ
TIM1_BASEInit.TIM_CounterMode = TIM_CounterMode_Up;
TIM1_BASEInit.TIM_ClockDivision = TIM_CKD_DIV1;
TIM_TimeBaseInit(TIM1, &TIM1_BASEInit);
//PWM模式选择
TIM_OCInitTypeDef TIM1_AFInit;
TIM1_AFInit.TIM_OCMode = TIM_OCMode_PWM1;
TIM1_AFInit.TIM_OCPolarity = TIM_OCPolarity_High;
TIM1_AFInit.TIM_OutputState = TIM_OutputState_Enable;
TIM1_AFInit.TIM_Pulse = 1080;
TIM_OC1Init(TIM1, &TIM1_AFInit);
TIM1_AFInit.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OC2Init(TIM1, &TIM1_AFInit);
TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);
TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);
TIM_CtrlPWMOutputs(TIM1, ENABLE);
TIM_Cmd(TIM1, ENABLE);
TIM_ARRPreloadConfig(TIM1, ENABLE);//PAEP使能
}
int main()
{
delay_init(180);
TIM1_PWM_Init();
TIM_SetCompare1(TIM1, 1900);
TIM_SetCompare2(TIM1, 1900);
delay_ms(500);
delay_ms(500);
TIM_SetCompare1(TIM1, 1080);
TIM_SetCompare2(TIM1, 1080);
delay_ms(500);
delay_ms(500);
}
求助各位大神,帮帮小弟的忙,感恩!
小弟只有这么多分可以给大神们了
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