求解一段程序以及IR2110驱动的问题-麻婆豆腐233的回答

求解一段程序以及IR2110驱动的问题

2019-08-20 19:10发布

/*******************************************************
* 定时器产生2路互补的PWM波
* channel1 ,channel2 -->A.8, A.9
channel1N,channel2N-->B.13, B.14 (互补）
* TimerPeriod --> ×Ô¶ˉÖØ×°ÔØÖüÆúÖμ
* ChannelxPulse --> Õ¼¿ÕÖüÆúÖμ
******************************************************/
void TIM1_PWM_Init(u16 pfreq ,u16 psc) //pfreqÎa2»·ÖÆμê±μ&#196

WMÆμÂê￡¬pscÎaÔ¤·ÖÆμÖμ
{
GPIO_InitTypeDef         GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_OCInitTypeDef            TIM_OCInitStructure; //êä3öí¨μàÅäÖÃ
TIM_BDTRInitTypeDef       TIM_BDTRInitStructure; //ËàÇøoíé23μÅäÖÃ

TimerPeriod = (SystemCoreClock / pfreq) - 1; //×Ô¶ˉÖØ×°ÔØÖüÆúÖμ

/* ChannelxPulse = DutyCycle * (TIM1_Period - 1) / 100 */
Channel1Pulse = (u16)((u32)(50  * (TimerPeriod - 1)) / 100 ); //Õ¼¿Õ±è50%
Channel2Pulse = (u16)((u32)(50  * (TimerPeriod - 1)) / 100 ); //Õ¼¿Õ±è50%

/* ê1ÄüTIM1￡¬GPIOA￡¬GPIOB￡¬GPIOE */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOE, ENABLE);

/*channel1 ,channel2 -->A.8,A.9*
   *channel1N,channel2N-->B.13,B.14*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8|GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_14;
GPIO_Init(GPIOB, &GPIO_InitStructure);

  /*  3õê¼»ˉTIM1  */
TIM_TimeBaseStructure.TIM_Period          = TimerPeriod;    //éèÖÃÖØ×°ÔØÖüÆúÖμ
TIM_TimeBaseStructure.TIM_Prescaler       = psc;             //éèÖÃÔ¤·ÖÆμÖμ
TIM_TimeBaseStructure.TIM_ClockDivision    = 0;                //ê±Öó·ÖÆμòò×ó￡¬½öóëêäèë2¶»ñóD1Ø￡¨¶¨ê±Æ÷óëÂË2¨Æ÷μÄÆμÂê±è￡©
TIM_TimeBaseStructure.TIM_CounterMode    = TIM_CounterMode_Up;//TIMÏòéÏ¼ÆêyÄ￡ê½
TIM_TimeBaseStructure.TIM_RepetitionCounter = 0;    //ÖØ¸′òç3öÖD¶Ï
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure);                //3õê¼»ˉ¶¨ê±Æ÷»ù±¾ÅäÖÃ

/* Channel_1 TIM_OCMode_PWM1Ä￡ê½ */
TIM_OCInitStructure.TIM_OCMode    = TIM_OCMode_PWM1;       //ÔúÏòéÏ¼Æêyê±￡¬ò»μ©TIMx_CNT<TIMx_CCR1ê±í¨μà1ÎaóDD§μçÆ½
TIM_OCInitStructure.TIM_OutputState  = TIM_OutputState_Enable;    //±è½Ïêä3öê1Äü
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;    //PWM»￥21êä3öê1Äü
TIM_OCInitStructure.TIM_Pulse       = Channel1Pulse;               //Õ¼¿Õ±è = TIM_Pulse/TIM_Period;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;       //óDD§μçÆ½Îa¸ßμçÆ½
TIM_OCInitStructure.TIM_OCNPolarity  = TIM_OCNPolarity_High;       //»￥21PWM¼«DÔ
TIM_OCInitStructure.TIM_OCIdleState  = TIM_OCIdleState_Set;          //êä3ö¿ÕÏD×′ì¬
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;    //PWM»￥21êä3ö¿ÕÏD×′ì¬
TIM_OC1Init(TIM1, &TIM_OCInitStructure);                           //¸ù¾YÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèTIM1 OC1

/* Channel_2    TIM_OCMode_PWM1Ä￡ê½ */

TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;             //ÔúÏòéÏ¼Æêyê±￡¬ò»μ©TIMx_CNT>TIMx_CCR1ê±í¨μà1ÎaóDD§μçÆ½
TIM_OCInitStructure.TIM_OutputState  = TIM_OutputState_Enable;    //±è½Ïêä3öê1Äü
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;    //PWM»￥21êä3öê1Äü
TIM_OCInitStructure.TIM_Pulse  = Channel2Pulse;                //Õ¼¿Õ±è = TIM_Pulse/TIM_Period;
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;       //óDD§μçÆ½Îa¸ßμçÆ½
TIM_OCInitStructure.TIM_OCNPolarity  = TIM_OCNPolarity_High;       //»￥21PWM¼«DÔ
TIM_OCInitStructure.TIM_OCIdleState  = TIM_OCIdleState_Set;          //êä3ö¿ÕÏD×′ì¬
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;    //PWM»￥21êä3ö¿ÕÏD×′ì¬
TIM_OC2Init(TIM1, &TIM_OCInitStructure);                      //¸ù¾YÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèTIM1 OC2

TIM_OC1PreloadConfig(TIM1, TIM_OCPreload_Enable);    //ê1ÄüTIM3ÔúCCR1éÏμÄÔ¤×°ÔØ¼Ä′æÆ÷
TIM_OC2PreloadConfig(TIM1, TIM_OCPreload_Enable);    //ê1ÄüTIM3ÔúCCR2éÏμÄÔ¤×°ÔØ¼Ä′æÆ÷

/*ËàÇøoíé23μ1|ÄüÅäÖÃ*/
TIM_BDTRInitStructure.TIM_OSSRState    = TIM_OSSRState_Enable;
TIM_BDTRInitStructure.TIM_OSSIState    = TIM_OSSIState_Enable;
TIM_BDTRInitStructure.TIM_LOCKLevel    = TIM_LOCKLevel_1;
TIM_BDTRInitStructure.TIM_DeadTime       = 0x2F; //éèÖÃTIM1_BDTRμÄDTG[7:0]
TIM_BDTRInitStructure.TIM_Break          = TIM_Break_Disable;
TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Enable;
TIM_BDTRConfig(TIM1, &TIM_BDTRInitStructure);

TIM_Cmd(TIM1, ENABLE); //ê1ÄüTIM1
TIM_CtrlPWMOutputs(TIM1,ENABLE); //PWMêä3öê1Äü
}
求解哦，以上程序的意思是不是A8和A9输出相同信号，而B13和B14也输出相同信号？（不知道为什么后面的注释成乱码了）
另外，图下部分的IR2110驱动，求解是不是HLN端入口的信号进去由HO端口输出？从图上来说就是A8控制Q1，A9控制Q3？
麻烦各位大佬了！！

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3条回答

麻婆豆腐233

2019-08-21 06:27

void TIM2_IRQHandler(void)
{
extern float Period_percent;

if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)  //检查更新发生
{
TIM_SetCompare1(TIM1,(u16)(Period_percent*spwm[i])) ;
TIM_SetCompare2(TIM1,(u16)(Period_percent*spwm[i++]));
if(i == 401)  //采样400个点
{

i = 0;
}

TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
}
}
再加上这一段，通过定时中断来输出PWM波，总觉得越来越糊涂了。是不是这里设定A8和A9占空比的原因导致的波形相似啊？

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