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发表于 2017-5-16 18:14:54
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void TIM8_OPM_RCR_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8,ENABLE); //TIM8ê±Öóê1Äü
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE); //ê1ÄüPORTCê±Öó
GPIO_PinAFConfig(GPIOC,GPIO_PinSource7,GPIO_AF_TIM8); //GPIOC7¸′óÃÎa¶¨ê±Æ÷8
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7; //GPIOC7
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //¸′óÃ1|Äü
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz; //Ëù¶è100MHz
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //íÆíì¸′óÃêä3ö
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN; //ÏÂà-
GPIO_Init(GPIOC,&GPIO_InitStructure); //3õê¼»ˉPF9
TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
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(TIM8, &TIM_TimeBaseStructure); //¸ù¾YTIM_TimeBaseInitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉTIMxμÄê±¼ä»ùêyμ￥λ
TIM_ClearITPendingBit(TIM8,TIM_IT_Update);
TIM_UpdateRequestConfig(TIM8,TIM_UpdateSource_Regular); /********* éèÖÃÖ»óD¼Æêyòç3ö×÷Îa¸üDÂÖD¶Ï ********/
TIM_SelectOnePulseMode(TIM8,TIM_OPMode_Single);/******* μ￥Âö3åÄ￡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; //±è½Ïêä3ö2ê1Äü
TIM_OCInitStructure.TIM_OutputNState = TIM_OutputNState_Disable; /****** ±è½Ïêä3ö2Nê§Äü *******/
TIM_OCInitStructure.TIM_Pulse = arr>>1; //éèÖÃ′y×°èë2¶»ñ±è½Ï¼Ä′æÆ÷μÄÂö3åÖμ
TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //êä3ö¼«DÔ:TIMêä3ö±è½Ï¼«DÔ¸ß
TIM_OC2Init(TIM8, &TIM_OCInitStructure); //¸ù¾YTIM_OCInitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèTIMx
TIM_OC2PreloadConfig(TIM8, TIM_OCPreload_Enable); //CH2ԤװÔØê1Äü
TIM_ARRPreloadConfig(TIM8, ENABLE); //ê1ÄüTIMxÔúARRéÏμÄԤװÔؼÄ′æÆ÷
TIM_ITConfig(TIM8, TIM_IT_Update ,ENABLE); //TIM8 ê1Äü»òÕßê§ÄüÖ¸¶¨μÄTIMÖD¶Ï
NVIC_InitStructure.NVIC_IRQChannel = TIM8_UP_TIM13_IRQn; //TIM8ÖD¶Ï
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; //ÏèÕ¼óÅÏ輶1¼¶
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; //′óóÅÏ輶1¼¶
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQí¨μà±»ê1Äü
NVIC_Init(&NVIC_InitStructure); //¸ù¾YNVIC_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèNVIC¼Ä′æÆ÷
TIM_ClearITPendingBit(TIM8, TIM_IT_Update); //Çå3yTIMxμÄÖD¶Ï′y′|àíλ:TIM ÖD¶ÏÔ′
TIM_Cmd(TIM8, ENABLE); //ê1ÄüTIM8
}
/******* TIM8¸üDÂÖD¶Ï·tÎñ3ìDò *********/
void TIM8_UP_TIM13_IRQHandler(void)
{
if(TIM_GetITStatus(TIM8,TIM_FLAG_Update)!=RESET)//¸üDÂÖD¶Ï
{
TIM_ClearITPendingBit(TIM8,TIM_FLAG_Update);//Çå3y¸üDÂÖD¶Ï±ê־λ
if(is_rcr_finish==0)//Öظ′¼ÆêyÆ÷Î′éèÖÃíê3é
{
if(rcr_integer!=0) //Õûêy2¿·ÖÂö3å»1Î′·￠Ëííê3é
{
TIM8->RCR=RCR_VAL;//éèÖÃÖظ′¼ÆêyÖμ
rcr_integer--;//¼õéùRCR_VAL+1¸öÂö3å
}else if(rcr_remainder!=0)//óàêy2¿·ÖÂö3å 2»Î»0
{
TIM8->RCR=rcr_remainder-1;//éèÖÃóàêy2¿·Ö
rcr_remainder=0;//Çåáã
is_rcr_finish=1;//Öظ′¼ÆêyÆ÷éèÖÃíê3é
}else goto out; //rcr_remainder=0￡¬Ö±½óíË3ö
TIM_GenerateEvent(TIM8,TIM_EventSource_Update);//2úéúò»¸ö¸üDÂê¼t ÖØDÂ3õê¼»ˉ¼ÆêyÆ÷
TIM_CtrlPWMOutputs(TIM8,ENABLE); //MOE Ö÷êä3öê1Äü
TIM_Cmd(TIM8, ENABLE); //ê1ÄüTIM8
if(motor_dir==CW) //èç1û·½ÏòÎaË3ê±Õë
current_pos+=(TIM8->RCR+1);//¼óéÏÖظ′¼ÆêyÖμ
else //·ñÔò·½ÏòÎaÄæê±Õë
current_pos-=(TIM8->RCR+1);//¼õè￥Öظ′¼ÆêyÖμ
}else
{
out: is_rcr_finish=1;//Öظ′¼ÆêyÆ÷éèÖÃíê3é
TIM_CtrlPWMOutputs(TIM8,DISABLE); //MOE Ö÷êä3ö1رÕ
TIM_Cmd(TIM8, DISABLE); //1رÕTIM8
printf("μ±Ç°Î»ÖÃ=%ld\r\n",current_pos);//′òó¡êä3ö
}
}
}
注释我也不知道为什么就炸了 |
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发表于 2017-5-13 19:45:00
