按照“pwm输出”视频的例程设置，但只有void TIM13，TIM14能输出正常pwm驱动电机。其余tim1-12均无输出。。。我弄四轴啊！只有两个pwm口？
程序大意是按按钮，将pwm从4000加到9999，驱动电调。。只有tim13 14能成功，其他要么没输出，要么电调一直警报油门过小。
此刻我的内心是崩溃的
[mw_shl_code=c,true] [mw_shl_code=c,true]int main(void) { int pwmval1=4000; u8 key; //±????ü?? KEY_Init(); //????????°??ü?????????????? // LED_Init(); //??????LED NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);//?è????????????????·?×é2 delay_init(168); //?????????±???? // uart_init(115200);//???????®???¨??????115200 TIM1_PWM_Init(10000-1,21-1); delay_ms(1000); TIM_SetCompare1(TIM1,pwmval1); TIM_SetCompare2(TIM1,pwmval1); TIM_SetCompare3(TIM1,pwmval1); TIM_SetCompare4(TIM1,pwmval1); delay_ms(1000); uart_init(500000); //???????®???¨??????500000 // LCD_Init(); //LCD?????? while(1) //????±???????0-300????????300?ó??300-0?????????· { key=KEY_Scan(1); //?????ü?? if(key) { switch(key) { case KEY0_PRES: //????LED0·?×? pwmval1++;pwmval1++;pwmval1++;pwmval1++;pwmval1++; TIM_SetCompare1(TIM1,pwmval1); TIM_SetCompare2(TIM1,pwmval1); TIM_SetCompare3(TIM1,pwmval1); TIM_SetCompare4(TIM1,pwmval1); break; case KEY1_PRES: //????LED1·?×? pwmval1--;pwmval1--; TIM_SetCompare1(TIM1,pwmval1); TIM_SetCompare2(TIM1,pwmval1); TIM_SetCompare3(TIM1,pwmval1); TIM_SetCompare4(TIM1,pwmval1); break; } }else delay_ms(10); // LCD_ShowNum(30+48+8,200,pwmval1,10,16); // LCD_ShowNum(30+48+8,220,pwmval2,10,16); // LCD_ShowNum(30+48+8,240,pwmval3,10,16); // LCD_ShowNum(30+48+8,260,pwmval4,10,16); } }[/mw_shl_code]

[/mw_shl_code] [mw_shl_code=c,true] [/mw_shl_code] [mw_shl_code=c,true] [/mw_shl_code] [mw_shl_code=c,true]void TIM1_PWM_Init(u32 arr,u32 psc) { //????·??è????????IO???è?? GPIO_InitTypeDef GPIO_InitStructure; TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure; TIM_OCInitTypeDef TIM_OCInitStructure; RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE); //TIM14?±?????? RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOE, ENABLE); //????PORTF?±?? GPIO_PinAFConfig(GPIOE,GPIO_PinSource9|GPIO_PinSource11|GPIO_PinSource13|GPIO_PinSource14,GPIO_AF_TIM1); //GPIOF9???????¨?±?÷14 GPIO_InitStructure.GPIO_Pin = GPIO_PinSource9|GPIO_PinSource11|GPIO_PinSource13|GPIO_PinSource14; //GPIOF9 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //???????? GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; //????100MHz GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //???ì???????? GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //???? GPIO_Init(GPIOE,&GPIO_InitStructure); //??????PF9 TIM_TimeBaseStructure.TIM_Prescaler=psc; //?¨?±?÷·??? TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up; //?ò?????????? TIM_TimeBaseStructure.TIM_Period=arr; //×?????×°???? TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV1; TIM_TimeBaseInit(TIM1,&TIM_TimeBaseStructure);//???????¨?±?÷14 TIM_OCInitStructure.TIM_OutputState=TIM_OutputState_Enable; TIM_ClearFlag(TIM1,TIM_FLAG_CC1);//???? TIM_ITConfig(TIM1,TIM_IT_CC1,ENABLE); //???? //??????TIM14 Channel1 PWM???? TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //?????¨?±?÷????:TIM?????í???÷??????2 TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //±??????????? TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //????????:TIM????±????????? TIM_OCInitStructure.TIM_Pulse=0; TIM_CtrlPWMOutputs(TIM1,ENABLE); TIM_OC1Init(TIM1, &TIM_OCInitStructure); //?ù??T???¨???????????????èTIM1 4OC1 TIM_OC2Init(TIM1, &TIM_OCInitStructure); TIM_OC3Init(TIM1, &TIM_OCInitStructure); TIM_OC4Init(TIM1, &TIM_OCInitStructure); TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable); //????TIM14??CCR1?????¤×°???????÷ TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable); TIM_OC3PreloadConfig(TIM1, TIM_OCPreload_Enable); TIM_OC4PreloadConfig(TIM1, TIM_OCPreload_Enable); TIM_ARRPreloadConfig(TIM1,ENABLE);//ARPE???? TIM_Cmd(TIM1, ENABLE); //????TIM14 } [/mw_shl_code]