新手入门
- 积分
- 15
- 金钱
- 15
- 注册时间
- 2016-6-12
- 在线时间
- 1 小时
|
发表于 2016-6-12 16:06:25
|
显示全部楼层
最近两天在弄这个,花了一天时间搞清楚咋回事了,这个用仿真是不行的,必须烧到片子里,然后用示波器波形就好了,似乎是仿真不出来的原因。
代码(中文注释copy过来就乱了,可以看附件里面的源文件):
//StepMotor.c
#include "StepMotor.h"
#include "SysTick.h"
void StepMotor_Init(u16 TIM1per,u16 PulseNum)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;
TIM_OCInitTypeDef TIM_OCInitStruct;
GPIO_InitTypeDef GPIO_InitStruct;
NVIC_InitTypeDef NVIC_InitStruct;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);//ê1Äü¶¨ê±Æ÷1μÄê±Öó
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);//ê1ÄüPORTAμÄê±Öó
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);//ê1Äü¸′óÃ1|ÄüμÄê±Öó
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF_PP;//íÆíìêä3öÄ£ê½
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_11;//PA8ÎaTIM1_CH1
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA,&GPIO_InitStruct);
//TIM1ê±»ùéèÖÃ
TIM_TimeBaseInitStruct.TIM_ClockDivision = TIM_CKD_DIV1;//2»·Ö¸îê±Öó
TIM_TimeBaseInitStruct.TIM_CounterMode = TIM_CounterMode_Up;//ÏòéϼÆêy
TIM_TimeBaseInitStruct.TIM_Prescaler = 720;//Ô¤·ÖÆμÖμ,ÿ10us¼Æêy1′Î
TIM_TimeBaseInitStruct.TIM_Period = TIM1per;//ÖØ×°ÔØÖμ
TIM_TimeBaseInitStruct.TIM_RepetitionCounter=PulseNum;//ÖØ¸′′Îêy
TIM_TimeBaseInit(TIM1,&TIM_TimeBaseInitStruct);
TIM_OCInitStruct.TIM_OCMode = TIM_OCMode_PWM2;//ÔúÏòéϼÆêyê±,ò»μ©TIMx_CNT<TIMx_CCR1ê±ÎaÎTD§μçÆ½,·ñÔòÎaóDD§μçÆ½
TIM_OCInitStruct.TIM_OutputState = TIM_OutputState_Enable;//OC4ê1Äüêä3ö
TIM_OCInitStruct.TIM_OCPolarity = TIM_OCPolarity_High;//óDD§μçÆ½Îa¸ßμçÆ½
TIM_OCInitStruct.TIM_Pulse = TIM1per/2;//±è½Ï2¶»ñ4μÄÔ¤×°ÔØÖμ
TIM_OC4Init(TIM1,&TIM_OCInitStruct);
TIM_UpdateDisableConfig(TIM1,DISABLE);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStruct.NVIC_IRQChannel=TIM1_UP_IRQn;
NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority =1;
NVIC_InitStruct.NVIC_IRQChannelSubPriority =0;
NVIC_Init(&NVIC_InitStruct);
TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE);
TIM_Cmd(TIM1,DISABLE);//½ûóÃTIM1
}
//êä3öò»′®Ö¸¶¨ÆμÂêoíêyá¿μÄÂö3å
//Cycle:Âö3åμÄÖüÆú£¬μ¥λus
//Pulse_Num:Âö3åμĸöêy£¬D¡óú255
void StepMotor_Run(u16 Cycle, u16 Pulse_Num)
{
u16 TIM1per = 0;
//¸Ä±äTIM1μÄ֨װÖμ¸Ä±äÂö3åÆμÂ꣬ÕaàïéèÖÃÂö3åÕ¼¿Õ±èÎa50%
TIM1per = Cycle/10; //Ô¤·ÖÆμÎa720,10us¼Æêy1′Î
TIM_SetAutoreload(TIM1, TIM1per-1);//éèÖÃTIM3μÄÖØ×°ÔØÖμ
TIM_SetCompare4(TIM1,TIM1per/2);//Õ¼¿Õ±èÎa50%
TIM_CtrlPWMOutputs (TIM1,ENABLE);
TIM_Cmd(TIM1,ENABLE);//ê1ÄüTIM1
}
//TIM1μÄUpdateÖD¶Ï′|àíoˉêy
void StopTim1(void)
{
if(TIM_GetITStatus(TIM1,TIM_IT_Update)==SET)
{
TIM_ClearITPendingBit(TIM1,TIM_IT_Update);
TIM_CtrlPWMOutputs (TIM1,DISABLE);
TIM_Cmd(TIM1,DISABLE);//ê§ÄüTIM1
Delay_us(5000);
TIM_CtrlPWMOutputs (TIM1,ENABLE);
TIM_Cmd(TIM1,ENABLE);//ê1ÄüTIM1
}
}
仿真的效果和楼主的一样,但是在示波器上看就没问题。
|
|