st2.0电机库时钟配置触发输出问题

drf63329272 · 发表于 2015-4-13 12:49

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我现在在改写st2.0电机库，为什么配置时钟的触发输出库里是TIM_SelectOutputTrigger(TIMER_NUM, TIM_TRGOSource_Update);
更新触发
按手册上写应该是采用CC4通道比较匹配触发TIM_SelectOutputTrigger(TIMER_NUM, TIM_TRGOSource_OC4Ref);才对的吧
但是我改成TIM_TRGOSource_OC4Ref的时候尽然触发不了
不改的话，ADC触发无论是配置为ADC_ExternalTrigInjectedConvConfig(ADC1, ADC_ExternalTrigInjecConv_T1_TRGO);
还是ADC_ExternalTrigInjectedConvConfig(ADC1, ADC_ExternalTrigInjecConv_T1_CC4);
都是在更新事件的时候才触发的，我通过量PWM波形看到上桥PWM都是在高电平中点，不是在低电平中点，请教各位有谁知道？

drf63329272 · 发表于 2015-4-13 12:53

TIM配置代码如下：
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
TIM_OCInitTypeDef  TIM_OCInitStructure;
TIM_BDTRInitTypeDef TIM_BDTRInitStructure;

//#if DRIVE_AUTO_OUTPUT_LOW_SIDE <= 0
// TIM_BDTRInitTypeDef TIM_BDTRInitStructure;
//#endif

TIM1_RCC_Configuration();
TIM1_GPIO_Configuration();

/* Time Base configuration */
TIM_DeInit(TIMER_NUM);
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
TIM_TimeBaseStructure.TIM_Prescaler = PWM_PRSC;
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_CenterAligned1;
TIM_TimeBaseStructure.TIM_Period = PWM_PERIOD-1;
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV2;
TIM_TimeBaseStructure.TIM_RepetitionCounter = REP_RATE;
TIM_TimeBaseInit(TIMER_NUM, &TIM_TimeBaseStructure);

/* Channel 1 Configuration in PWM mode */
TIM_OCStructInit(&TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;

#if PMOS_ON_HIGH_SIDE > 0
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
#else
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Reset;
#endif

#if DRIVE_AUTO_OUTPUT_LOW_SIDE <= 0
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Enable;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
#else
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_High;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCNIdleState_Reset;
#endif

TIM_OCInitStructure.TIM_Pulse = 0;
TIM_OC1Init(TIMER_NUM, &TIM_OCInitStructure);
TIM_OCInitStructure.TIM_Pulse = 0;
TIM_OC2Init(TIMER_NUM, &TIM_OCInitStructure);
TIM_OCInitStructure.TIM_Pulse = 0;
TIM_OC3Init(TIMER_NUM, &TIM_OCInitStructure);

/* Channel 4 Configuration in OC */
TIM_OCStructInit(&TIM_OCInitStructure);
TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //oí1.2.3í¨μàμÄPWM1Ä￡ê½ÕyoÃÏà·′￡¬2Î¿¼
// TIM1_CCMR1¼Ä′æÆ÷μÄ4-6Î»¡￡
TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;    ////CCR4 Õa¸ö±ØDëêä3öê1Äüoó2ÅÄü′￥·￠ADC1μÄ×￠èëí¨μà2éÑù
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable; //  TIM_OutputState_Enable
TIM_OCInitStructure.TIM_Pulse = PWM_PERIOD -1;//2*PWM_PERIOD -20 - 30; //20Îaμçá÷2éÑùê±¼ä 30Îa±￡Ö¤2éÑùê±¿ìÔútim ¸üDÂêÂ¼t2úéúÖ®Ç°

TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
TIM_OCInitStructure.TIM_OCNPolarity = TIM_OCNPolarity_Low;
TIM_OCInitStructure.TIM_OCIdleState = TIM_OCIdleState_Set;
TIM_OCInitStructure.TIM_OCNIdleState = TIM_OCIdleState_Reset;

TIM_OC4Init(TIMER_NUM, &TIM_OCInitStructure);

/* Enables the TIM1 Preload on CC1 Register */
TIM_OC1PreloadConfig(TIMER_NUM, TIM_OCPreload_Enable);  //ÆôóÃ±è½ÏÆ÷μÄó°×ó¼Ä′æÆ÷￡¨Ö±μ½2úéú¸üDÂêÂ¼t2Å¸ü¸ÄéèÖÃ￡©
/* Enables the TIM1 Preload on CC2 Register */
TIM_OC2PreloadConfig(TIMER_NUM, TIM_OCPreload_Enable);
/* Enables the TIM1 Preload on CC3 Register */
TIM_OC3PreloadConfig(TIMER_NUM, TIM_OCPreload_Enable);
/* Enables the TIM1 Preload on CC4 Register */
TIM_OC4PreloadConfig(TIMER_NUM, TIM_OCPreload_Enable);

//#if DRIVE_AUTO_OUTPUT_LOW_SIDE <= 0
/* Automatic Output enable, Break, dead time and lock configuration*/
TIM_BDTRInitStructure.TIM_OSSRState = TIM_OSSRState_Enable;  //TIM_OSSRState_Enable  TIM_OSSIState_Disable
TIM_BDTRInitStructure.TIM_OSSIState = TIM_OSSRState_Enable;
TIM_BDTRInitStructure.TIM_LOCKLevel = TIM_LOCKLevel_1;
TIM_BDTRInitStructure.TIM_DeadTime  = TIMER_DeadTime_Value;//64;
TIM_BDTRInitStructure.TIM_Break = TIM_Break_Disable;
TIM_BDTRInitStructure.TIM_BreakPolarity = TIM_BreakPolarity_High;
TIM_BDTRInitStructure.TIM_AutomaticOutput = TIM_AutomaticOutput_Disable;
TIM_BDTRConfig(TIMER_NUM, &TIM_BDTRInitStructure);
//#endif

TIM_SelectOutputTrigger(TIMER_NUM, TIM_TRGOSource_Update); //Ñ¡ÔñTIM1′￥·￠Æ÷êä3öÄ￡ê½
// TIM_SelectOutputTrigger(TIMER_NUM, TIM_TRGOSource_OC4Ref); //Ñ¡ÔñTIM1′￥·￠Æ÷êä3öÄ￡ê½

// TIM_ClearITPendingBit(TIMER_NUM, TIM_IT_Break);//Çå3t½ô¼±é23μÖD¶Ï±êÖ¾Î»
// TIM_ITConfig(TIMER_NUM, TIM_IT_Break,DISABLE); //ENABLE ê1Äü½ô¼±é23μÖD¶Ï  Ç°ÃæDèòaTIM1_BDTRInitStructure.TIM_Break = TIM_Break_Enable;

// // Clear Update Flag
// TIM_ClearFlag(TIMER_NUM, TIM_FLAG_Update);
////
// TIM_ITConfig(TIMER_NUM, TIM_IT_Update, ENABLE); //ÔúêÇ·ñDèòa¶áè¡ADCÖD¾ö¶¨1Ø±Õ»ò¿aÆô¸üDÂêÂ¼tÖD¶Ï
////
// TIM_ITConfig(TIMER_NUM, TIM_IT_CC4,ENABLE);

Motor_DRIVE_ON();

/* TIMER_NUM counter enable */
TIM_Cmd(TIMER_NUM, ENABLE);

/* Main Output Enable */
TIM_CtrlPWMOutputs(TIMER_NUM, ENABLE);

// Resynch to have the Update evend during Undeflow
TIM_GenerateEvent(TIMER_NUM, TIM_EventSource_Update);

drf63329272 · 发表于 2015-4-13 13:19

自己顶，哪位看看

drf63329272 · 发表于 2015-4-13 17:12

问题已解决，TIM_TimeBaseStructure.TIM_Period = PWM_PERIOD-1;和CCR4 TIM_OCInitStructure.TIM_Pulse = PWM_PERIOD -1;不能相等
，需要改为TIM_OCInitStructure.TIM_Pulse = PWM_PERIOD -2;

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[求助] st2.0电机库时钟配置触发输出问题

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