串口的接收脚做通信用 对应的发射角需要PWM输出

SNEZSTM32

串口的接收脚做通信用 对应的发射角需要PWM输出 可是发现没有波.
主要问题是这样的file:///C:\Users\李阳\Documents\Tencent Files\571567130\Image\Group\~%Q%01KFXVIK4%}YUDN]IF7.jpgfile:///C:\Users\李阳\Documents\Tencent Files\571567130\Image\Group\~%Q%01KFXVIK4%}YUDN]IF7.jpgfile:///C:\Users\李阳\Documents\Tencent Files\571567130\Image\Group\~%Q%01KFXVIK4%}YUDN]IF7.jpg
我想让PA3(USART2_RX)工作为串口接受模式
让PA2(USART2_TX)配置为PWM输出
我陪串口的时候只配接受 可是还是不行。

而且 我把串口的函数注释了 就有波 加上就没有了
还有一个问题 我用软件仿真时有波的！
PS代码是在原子战舰上改的 注释可能不对。
@正点原子

[mw_shl_code=c,true]void my_usart_init(void)
{
        GPIO_InitTypeDef GPIO_InitStructure;
        USART_InitTypeDef USART_InitStructure;
        NVIC_InitTypeDef NVIC_InitStructure;
         
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);        //ê1ÄüUSART1￡¬GPIOAê±Öó
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);
        //USART1_TX   GPIOA.9
//  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //PA.9
//  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;        //¸′óÃíÆíìêä3ö
//  GPIO_Init(GPIOA, &GPIO_InitStructure);//3õê¼»ˉGPIOA.9
   
  //USART1_RX          GPIOA.103õê¼»ˉ
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;//PA10
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//¸¡¿Õêäèë
  GPIO_Init(GPIOA, &GPIO_InitStructure);//3õê¼»ˉGPIOA.10  

  //Usart1 NVIC ÅäÖÃ
  NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//ÇàÕ¼óÅÏ輶3
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;                //×óóÅÏ輶3
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                        //IRQí¨μàê1Äü
        NVIC_Init(&NVIC_InitStructure);        //¸ù¾YÖ¸¶¨μÄ2Îêy3õê¼»ˉVIC¼Ä′æÆ÷
   //USART 3õê¼»ˉéèÖÃ

        USART_InitStructure.USART_BaudRate = 9600;//′®¿ú2¨ìØÂê
        USART_InitStructure.USART_WordLength = USART_WordLength_8b;//×Ö3¤Îa8λêy¾Y¸ñê½
        USART_InitStructure.USART_StopBits = USART_StopBits_1;//ò»¸öí￡Ö1λ
        USART_InitStructure.USART_Parity = USART_Parity_No;//ÎTÆæżD￡Ñéλ
        USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//ÎTó2¼têy¾Yá÷¿ØÖÆ
        USART_InitStructure.USART_Mode = USART_Mode_Rx;        //êÕ·￠Ä￡ê½
       
        USART_Cmd(USART2, ENABLE);
       
  USART_Init(USART2, &USART_InitStructure); //3õê¼»ˉ′®¿ú1
  USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);//¿aÆô′®¿ú½óêüÖD¶Ï
     
}[/mw_shl_code]
[mw_shl_code=coldfusion,true]void TIM3_PWM_Init(u16 arr,u16 psc)
{  
        GPIO_InitTypeDef GPIO_InitStructure;
        TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
        TIM_OCInitTypeDef  TIM_OCInitStructure;
       

        RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);        //ê1Äü¶¨ê±Æ÷3ê±Öó
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);  //ê1ÄüGPIOíaéèoíAFIO¸′óÃ1|ÄüÄ￡¿éê±Öó
       
//        GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3, ENABLE); //Timer32¿·ÖÖØó3éä  TIM3_CH2->B5   

   //éèÖøÃòy½ÅÎa¸′óÃêä3ö1|Äü,êä3öTIM3 CH2μ&#196WMÂö3å2¨DΠ       GPIOB.5
        GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //TIM_CH2
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //¸′óÃíÆíìêä3ö
        GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
        GPIO_Init(GPIOA, &GPIO_InitStructure);//3õê¼»ˉGPIO

   //3õê¼»ˉTIM3
        TIM_TimeBaseStructure.TIM_Period = arr; //éèÖÃÔúÏÂò»¸ö¸üDÂê¼t×°èë»î¶ˉμÄ×Ô¶ˉÖØ×°ÔؼÄ′æÆ÷ÖüÆúμÄÖμ
        TIM_TimeBaseStructure.TIM_Prescaler =psc; //éèÖÃóÃà′×÷ÎaTIMxê±ÖóÆμÂê3yêyμÄÔ¤·ÖÆμÖμ
        TIM_TimeBaseStructure.TIM_ClockDivision = 0; //éèÖÃê±Öó·Ö¸î:TDTS = Tck_tim
        TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIMÏòéϼÆêyÄ￡ê½
        TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); //¸ù¾YTIM_TimeBaseInitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉTIMxμÄê±¼ä»ùêyμ￥λ
       
        //3õê¼»ˉTIM3 Channel2 PWMÄ￡ê½         
        TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //Ñ¡Ôñ¶¨ê±Æ÷Ä￡ê½:TIMÂö3å¿í¶èμ÷ÖÆÄ￡ê½2
        TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //±è½Ïêä3öê1Äü
        TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //êä3ö¼«DÔ:TIMêä3ö±è½Ï¼«DÔ¸ß
        TIM_OC3Init(TIM2, &TIM_OCInitStructure);  //¸ù¾YTÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèTIM3 OC2

        TIM_OC3PreloadConfig(TIM2, TIM_OCPreload_Enable);  //ê1ÄüTIM3ÔúCCR2éÏμÄԤװÔؼÄ′æÆ÷

        TIM_Cmd(TIM2, ENABLE);  //ê1ÄüTIM3
       

}[/mw_shl_code]

正点原子

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天耀中华

楼主，可以看看您做的这个课题要求的完整版吗？