853 lines
26 KiB
C
853 lines
26 KiB
C
/*****************************************************************************!
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* 技术讨论：QQ群 123763203
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* 官网 ：www.navota.com
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*
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* @file etm.c
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* @brief etm定时器函数库
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* @author Navota
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* @date 2018-3-1
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***************************************************************************/
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#include "common.h"
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#include "etm.h"
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/*!
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* @brief 存放回调入口
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*
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*/
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ETM_CallbackPtr ETM_Callback[3] = {(ETM_CallbackPtr)NULL};
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/******************************************************************************
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* 定义ETM的接口函数
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*******************************************************************************/
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/*******************************************************************************//*!
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*
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* @brief 设置ETM模块时钟资源及分频系数.
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*
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* @param[in] pETM 指向三个ETM定时器其中一个的基址.
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* @param[in] ClockSource ETM 选择的时钟源 ： 禁用（ETM_CLOCK_NOCLOCK）、系统时钟（ETM_CLOCK_SYSTEMCLOCK）、固定频率时钟/2（ETM_CLOCK_FIXEDFREQCLOCK）、外接时钟（ETM_CLOCK_EXTERNALCLOCK）.
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* @param[in] ClockPrescale 分频系数.
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_ClockSet(ETM_Type *pETM, uint8_t u8ClockSource, uint8_t u8ClockPrescale)
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{
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uint8_t u8Temp;
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u8Temp = (pETM->SC & 0xE0);//pETM指向的SC寄存器低5位清0，即未选择时钟，时钟输入采取1分频
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u8Temp |= (ETM_SC_CLKS(u8ClockSource & 0x3) | ETM_SC_PS(u8ClockPrescale & 0x7));
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pETM->SC = u8Temp;//配置该ETM的状态与控制寄存器ETMx_SC
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}
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/*********************************************************************************//*!
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*
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* @brief ETM中PWM的初始化函数
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*
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* @param[in] pETM 指向三个ETM定时器其中一个的基址.
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* @param[in] PWMModeSelect 居中对齐CPWM（10）、边沿对齐EPWM（01）以及级联模式PWM（11）.
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* @param[in] PWMEdgeSelect 高真脉冲（01）、低真脉冲（10）.
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_PWMInit(ETM_Type *pETM, uint8_t u8PWMModeSelect, uint8_t u8PWMEdgeSelect)
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{
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uint8_t channels, i;
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ASSERT((ETM0== pETM) || (ETM1== pETM) || (ETM2== pETM));//断言来检测ETM通道是否正确
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/* 选用ETM时钟 */
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if (ETM0 == pETM)
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{
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channels = 2;
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SIM->SCGC |= SIM_SCGC_ETM0_MASK; //ETM0共有两个通道
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}
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else if(ETM1 == pETM)
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{
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channels = 2;
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SIM->SCGC |= SIM_SCGC_ETM1_MASK; //ETM1共有两个通道
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}
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else
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{
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channels = 6;
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SIM->SCGC |= SIM_SCGC_ETM2_MASK; //ETM2共有六个通道
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}
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pETM->SC = 0x0; //关闭计数器
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pETM->MOD = ETM_MOD_INIT;
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if(ETM_PWMMODE_CENTERALLIGNED == u8PWMModeSelect) //打开CPWM
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{
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pETM->SC |= ETM_SC_CPWMS_MASK;
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}
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else if(ETM_PWMMODE_COMBINE == u8PWMModeSelect)
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{
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ASSERT(ETM2 == pETM);
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pETM->MODE |= ETM_MODE_WPDIS_MASK | ETM_MODE_ETMEN_MASK;
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pETM->COMBINE = ETM_COMBINE_COMBINE0_MASK | ETM_COMBINE_COMP0_MASK | ETM_COMBINE_SYNCEN0_MASK | ETM_COMBINE_DTEN0_MASK |
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ETM_COMBINE_COMBINE1_MASK | ETM_COMBINE_COMP1_MASK | ETM_COMBINE_SYNCEN1_MASK | ETM_COMBINE_DTEN1_MASK |
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ETM_COMBINE_COMBINE2_MASK | ETM_COMBINE_COMP2_MASK | ETM_COMBINE_SYNCEN2_MASK | ETM_COMBINE_DTEN2_MASK
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; // 打开通道级联模式
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pETM->SC &= ~ETM_SC_CPWMS_MASK;
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}
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if(ETM_PWM_HIGHTRUEPULSE == u8PWMEdgeSelect)
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{
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/* 配置通道寄存器，设置通道状态及通道计数值 */
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for(i=0; i<channels; i++)
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{
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pETM->CONTROLS[i].CnSC = ETM_CnSC_MSB_MASK | ETM_CnSC_ELSB_MASK;
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pETM->CONTROLS[i].CnV = ETM_C0V_INIT + i*100;
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}
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}
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else if(ETM_PWM_LOWTRUEPULSE == u8PWMEdgeSelect)
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{
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for(i=0; i<channels; i++)
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{
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pETM->CONTROLS[i].CnSC = ETM_CnSC_MSB_MASK | ETM_CnSC_ELSA_MASK;
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pETM->CONTROLS[i].CnV = ETM_C0V_INIT + i*100 ;
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}
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}
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}
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/*********************************************************************************//*!
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*
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* @brief 禁用ETM的通道功能，用于GPIO或其他功能
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*
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* @param[in] pETM 指向三个ETM定时器其中一个的基址.
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* @param[in] u8ETM_Channel 通道号.
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_disblechannel(ETM_Type *pETM, uint8_t u8ETM_Channel)
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{
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uint8_t i;
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i= u8ETM_Channel;
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pETM->CONTROLS[i].CnSC &= ~ (ETM_CnSC_ELSB_MASK| ETM_CnSC_ELSA_MASK);
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}
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/*********************************************************************************//*!
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*
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* @brief 输入捕捉初始化函数.
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*
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* @param[in] pETM 指向三个ETM定时器其中一个的基址.
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* @param[in] Channel 配置通道号.
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* @param[in] CaptureMode 选择捕捉方式:上升沿, 下降沿或跳变沿.
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_InputCaptureInit(ETM_Type *pETM, uint8_t u8ETM_Channel, uint8_t u8CaptureMode)
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{
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ASSERT(((ETM0 == pETM) && (u8ETM_Channel < 2)) ||
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((ETM1 == pETM) && (u8ETM_Channel < 2)) ||
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((ETM2 == pETM) && (u8ETM_Channel < 6))
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);
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/* 选用ETM时钟 */
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if ((ETM0 == pETM) && (u8ETM_Channel < 2))
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{
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SIM->SCGC |= SIM_SCGC_ETM0_MASK;
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NVIC_EnableIRQ(ETM0_IRQn);
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}
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else if((ETM1 == pETM) && (u8ETM_Channel < 2))
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{
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SIM->SCGC |= SIM_SCGC_ETM1_MASK;
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NVIC_EnableIRQ(ETM1_IRQn);
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}
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else
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{
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SIM->SCGC |= SIM_SCGC_ETM2_MASK;
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NVIC_EnableIRQ(ETM2_IRQn);
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}
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pETM->SC = 0x0; //关闭计数器
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pETM->MOD = 0xFFFF;
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if(ETM_INPUTCAPTURE_RISINGEDGE == u8CaptureMode) //开启中断，捕获上升沿
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{
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pETM->CONTROLS[u8ETM_Channel].CnSC = ETM_CnSC_CHIE_MASK | ETM_CnSC_ELSA_MASK;
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}
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else if(ETM_INPUTCAPTURE_FALLINGEDGE == u8CaptureMode) //捕获下降沿
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{
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pETM->CONTROLS[u8ETM_Channel].CnSC = ETM_CnSC_CHIE_MASK | ETM_CnSC_ELSB_MASK;
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}
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else if(ETM_INPUTCAPTURE_BOTHEDGE == u8CaptureMode) //捕获跳变沿
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{
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pETM->CONTROLS[u8ETM_Channel].CnSC = ETM_CnSC_CHIE_MASK | ETM_CnSC_ELSA_MASK | ETM_CnSC_ELSB_MASK;
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}
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}
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/*********************************************************************************//*!
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*
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* @brief 对ETM配置双边捕获模式来测量一个脉冲的宽度或周期(ETM2).
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*
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* @param[in] pETM ETM2.
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* @param[in] ChannelPair 频道配对数的配置为: 0, 2, 4.
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* @param[in] CaptureMode 选择单周期捕捉（4），和连续捕捉方式（5）.
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* @param[in] Channel_N_Edge 频道N边沿检测：无（0），上升沿（1）下降沿（2）双沿（3）.
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* @param[in] Channel_Np1_Edge 频道N+1边沿检测.
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_DualEdgeCaptureInit(ETM_Type *pETM, uint8_t u8ChannelPair, uint8_t u8CaptureMode,
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uint8_t u8Channel_N_Edge, uint8_t u8Channel_Np1_Edge)
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{
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ASSERT((ETM2 == pETM) && (u8ChannelPair < 6) && !(u8ChannelPair & 1) );
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SIM->SCGC |= SIM_SCGC_ETM2_MASK;
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if((0 == u8ChannelPair) || (2== u8ChannelPair))
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{
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}
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pETM->SC = 0x0; /* 关闭计数器 */
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pETM->MOD = 0xFFFF;
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pETM->MODE |= ETM_MODE_ETMEN_MASK; /* ETMEN = 1 */
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pETM->COMBINE |= ((ETM_COMBINE_DECAPEN0_MASK) << (u8ChannelPair * 4));
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pETM->CONTROLS[u8ChannelPair].CnSC &= ~ETM_CnSC_CHF_MASK; /* CH(n)F 和 CH(n+1)F 位必须要先清除 */
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pETM->CONTROLS[u8ChannelPair + 1].CnSC &= ~ETM_CnSC_CHF_MASK;
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if(ETM_INPUTCAPTURE_DUALEDGE_ONESHOT == u8CaptureMode) /* 单次模式 */
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{
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pETM->CONTROLS[u8ChannelPair].CnSC &= ~ETM_CnSC_MSA_MASK;
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pETM->CONTROLS[u8ChannelPair+1].CnSC &= ~ETM_CnSC_MSA_MASK;
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}
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else if(ETM_INPUTCAPTURE_DUALEDGE_CONTINUOUS == u8CaptureMode) /* 连续模式 */
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{
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pETM->CONTROLS[u8ChannelPair].CnSC |= ETM_CnSC_MSA_MASK;
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pETM->CONTROLS[u8ChannelPair+1].CnSC |= ETM_CnSC_MSA_MASK;
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}
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pETM->CONTROLS[u8ChannelPair].CnSC |= (u8Channel_N_Edge << 2); /* 选择检测边沿 */
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pETM->CONTROLS[u8ChannelPair + 1].CnSC |= (u8Channel_Np1_Edge << 2);
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pETM->COMBINE |= (ETM_COMBINE_DECAP0_MASK << (u8ChannelPair * 4));
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}
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/*********************************************************************************//*!
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*
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* @brief 输出对比初始化.
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*
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* @param[in] pETM 指向三个ETM定时器其中一个的基址.
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* @param[in] Channel 配置通道即通道号.
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* @param[in] CompareMode 选择模式：翻转（01）、置位（11）、清0（10）.
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_OutputCompareInit(ETM_Type *pETM, uint8_t u8ETM_Channel, uint8_t u8CompareMode)
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{
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ASSERT(((ETM0 == pETM) && (u8ETM_Channel < 2)) ||
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((ETM1 == pETM) && (u8ETM_Channel < 2)) ||
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((ETM2 == pETM) && (u8ETM_Channel < 6))
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);
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/* 选用ETM模块时钟 */
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if(ETM0 == pETM)
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{
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SIM->SCGC |= SIM_SCGC_ETM0_MASK;
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}
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else if(ETM1 == pETM)
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{
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SIM->SCGC |= SIM_SCGC_ETM1_MASK;
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}
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else
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{
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SIM->SCGC |= SIM_SCGC_ETM2_MASK;
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}
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pETM->SC = 0x0; //关闭计数器
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pETM->MOD = ETM_MOD_INIT;
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pETM->CONTROLS[u8ETM_Channel].CnSC = (ETM_CnSC_MSA_MASK | (u8CompareMode << 2));
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pETM->CONTROLS[u8ETM_Channel].CnV = ETM_C0V_INIT;
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}
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/*********************************************************************************//*!
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*
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* @brief 实现软件同步触发（ETM2）.
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*
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* @param[in] pETM ETM2.
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_SoftwareSync(ETM_Type *pETM)
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{
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ASSERT(ETM2 == pETM);
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pETM->SYNCONF |= ETM_SYNCONF_SYNCMODE_MASK;
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pETM->SYNC |= ETM_SYNC_SWSYNC_MASK;
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}
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/*********************************************************************************//*!
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*
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* @brief ETM中配置ETMx_SYNC 寄存器来选择硬件触发(ETM2).
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*
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* @param[in] pETM ETM2.
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* @param[in] u8TriggerN 选择硬件触发资源.
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_HardwareSync(ETM_Type *pETM, uint8_t u8TriggerN)
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{
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ASSERT(ETM2 == pETM);
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pETM->SYNCONF |= ETM_SYNCONF_SYNCMODE_MASK;
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switch(u8TriggerN)
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{
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case ETM_SYNC_TRIGGER_TRIGGER2:
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pETM->SYNC |= ETM_SYNC_TRIG2_MASK;
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break;
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case ETM_SYNC_TRIGGER_TRIGGER1:
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pETM->SYNC |= ETM_SYNC_TRIG1_MASK;
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break; /* 需要先配置ETM0CH0 */
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case ETM_SYNC_TRIGGER_TRIGGER0:
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pETM->SYNC |= ETM_SYNC_TRIG0_MASK;
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break; /* 需要先配置ACMP0 */
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default:
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break;
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}
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}
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/*********************************************************************************//*!
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*
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* @brief 通过配置ETM保证硬件同步，产生触发（可有多个触发）(ETM2).
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*
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* @param[in] pETM ETM2.
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* @param[in] u8TriggerMask 硬件触发资源标志号.联合TRIG0~TREG2.(x000xxxx~x111xxxx)
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_HardwareSyncCombine(ETM_Type *pETM, uint8_t u8TriggerMask)
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{
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ASSERT(ETM2 == pETM);
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pETM->SYNCONF |= ETM_SYNCONF_SYNCMODE_MASK;
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pETM->SYNC &= 0x8F;
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pETM->SYNC |= (u8TriggerMask & 0x70);
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}
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/*********************************************************************************//*!
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*
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* @brief 硬件触发2产生ETM2的PWM同步触发(ETM2)
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*
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* @param[in] pETM ETM2.
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_GenerateTrig2(ETM_Type *pETM)
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{
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ASSERT(ETM2 == pETM);
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if(pETM->SYNC & ETM_SYNC_TRIG2_MASK)
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{
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#if defined(CPU_NV32)
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SIM->SOPT |= SIM_SOPT_ETMSYNC_MASK;
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#endif
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}
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}
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/*********************************************************************************//*!
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*
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* @brief ETM死区时间设置（ETM2）.
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*
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* @param[in] pETM ETM2.
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* @param[in] PrescalerValue 总线时钟分频值, 0 to 3.
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* @param[in] DeadETMeValue 时钟数值插入, 0 to 63.
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_PWMDeadETMeSet(ETM_Type *pETM, uint8_t u8PrescalerValue, uint8_t u8DeadETMeValue)
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{
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ASSERT(ETM2 == pETM);
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pETM->COMBINE |= 0x101010; /* 使能死区时间插入 */
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if(!(pETM->MODE & ETM_MODE_WPDIS_MASK)) /* 判断是否使能写保护 */
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{
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pETM->MODE |= ETM_MODE_WPDIS_MASK; /* 禁止写保护 */
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pETM->DEADETME = (ETM_DEADETME_DTVAL(u8DeadETMeValue & 0x3F) | ETM_DEADETME_DTPS(u8PrescalerValue & 0x3));
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pETM->MODE &= ~ETM_MODE_WPDIS_MASK; /* 使能写保护 */
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}
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else
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{
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/* 若无写保护 */
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pETM->DEADETME = (ETM_DEADETME_DTVAL(u8DeadETMeValue & 0x3F) | ETM_DEADETME_DTPS(u8PrescalerValue & 0x3));
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}
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pETM->SYNC |= ETM_SYNC_SWSYNC_MASK; /* 设置软件同步 */
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}
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/*********************************************************************************//*!
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*
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* @brief 设置输出屏蔽（ETM2）.
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*
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* @param[in] pETM ETM2.
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* @param[in] Channel 需要屏蔽的通道号.
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*
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* @return none.
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*
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*********************************************************************************/
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void ETM_OutputMaskSet(ETM_Type *pETM, uint8_t u8ETM_Channel)
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{
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ASSERT((ETM2 == pETM) && (u8ETM_Channel < 6));
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pETM->OUTMASK |= (1 << u8ETM_Channel);
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if(pETM->SYNC & ETM_SYNC_SYNCHOM_MASK) /* 通过PWM同步更新 */
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{
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pETM->SYNCONF |= ETM_SYNCONF_SYNCMODE_MASK;
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if(pETM->SYNCONF & ETM_SYNCONF_SWOM_MASK) /* 软件触发激活 */
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{
|
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pETM->SYNC |= ETM_SYNC_SWSYNC_MASK;
|
||
}
|
||
else if(pETM->SYNCONF & ETM_SYNCONF_HWOM_MASK) /* 硬件触发激活 */
|
||
{
|
||
pETM->SYNC |= ETM_SYNC_TRIG2_MASK;
|
||
|
||
#if defined(CPU_NV32)
|
||
SIM->SOPT |= SIM_SOPT_ETMSYNC_MASK; /* 使能硬件同步 */
|
||
#endif
|
||
}
|
||
else
|
||
{
|
||
}
|
||
}
|
||
else /* 若无软件同步, 在系统时钟的上升沿对其更新 */
|
||
{
|
||
}
|
||
}
|
||
|
||
/*********************************************************************************//*!
|
||
*
|
||
* @brief 配置软件输出控制SWOCTRL寄存器的同步是否由软件触发(ETM2).
|
||
*
|
||
* @param[in] pETM ETM2.
|
||
* @param[in] Channel 软件触发PWM波的通道选择.
|
||
* @param[in] ChannelValue 0或1,0不触发;1触发.
|
||
*
|
||
* @return none.
|
||
*
|
||
*********************************************************************************/
|
||
void ETM_SWOutputControlSet(ETM_Type *pETM, uint8_t u8ETM_Channel, uint8_t u8ChannelValue)
|
||
{
|
||
ASSERT((ETM2 == pETM) && (u8ETM_Channel < 6));
|
||
|
||
if(ETM_SWOCTRL_HIGH == u8ChannelValue)
|
||
{
|
||
pETM->SWOCTRL |= (0x0101 << u8ETM_Channel);
|
||
}
|
||
else if(ETM_SWOCTRL_LOW == u8ChannelValue)
|
||
{
|
||
pETM->SWOCTRL |= (1 << u8ETM_Channel);
|
||
pETM->SWOCTRL &= ~(0x100 << u8ETM_Channel);
|
||
}
|
||
if(pETM->SYNCONF & ETM_SYNCONF_SWOC_MASK)
|
||
{
|
||
pETM->SYNCONF |= ETM_SYNCONF_SYNCMODE_MASK;
|
||
if(pETM->SYNCONF & ETM_SYNCONF_SWSOC_MASK)
|
||
{
|
||
pETM->SYNC |= ETM_SYNC_SWSYNC_MASK;
|
||
}
|
||
else if(pETM->SYNCONF & ETM_SYNCONF_HWSOC_MASK)
|
||
{
|
||
pETM->SYNC |= ETM_SYNC_TRIG2_MASK;
|
||
|
||
#if defined(CPU_NV32)
|
||
SIM->SOPT |= SIM_SOPT_ETMSYNC_MASK;
|
||
#endif
|
||
}
|
||
}
|
||
else
|
||
{
|
||
}
|
||
}
|
||
|
||
/*********************************************************************************//*!
|
||
*
|
||
* @brief 设置通道输出极性(ETM2).
|
||
*
|
||
* @param[in] pETM ETM2.
|
||
* @param[in] Channel PWM波的通道选择.
|
||
* @param[in] ActiveValue 极性的选择，0为高电平，1为低电平.
|
||
*
|
||
* @return none.
|
||
*
|
||
*********************************************************************************/
|
||
void ETM_PolaritySet(ETM_Type *pETM, uint8_t u8ETM_Channel, uint8_t u8ActiveValue)
|
||
{
|
||
ASSERT((ETM2 == pETM) && (u8ETM_Channel < 6));
|
||
|
||
if(ETM_POLARITY_HIGHACTIVE == u8ActiveValue)
|
||
{
|
||
pETM->POL &= ~(1 << u8ETM_Channel);
|
||
}
|
||
else if(ETM_POLARITY_LOWACTIVE == u8ActiveValue)
|
||
{
|
||
pETM->POL |= (1 << u8ETM_Channel);
|
||
}
|
||
}
|
||
|
||
/*********************************************************************************//*!
|
||
*
|
||
* @brief 设置ETM模块在debug模式下的行为(ETM2).
|
||
*
|
||
* @param[in] pETM ETM2.
|
||
* @param[in] u8DebugMode debug 的模式从00-11之间选择.
|
||
*
|
||
* @return none.
|
||
*
|
||
*********************************************************************************/
|
||
void ETM_SetDebugModeBehavior(ETM_Type *pETM, uint8_t u8DebugMode)
|
||
{
|
||
ASSERT((ETM2 == pETM));
|
||
pETM->CONF &= ~ETM_CONF_BDMMODE_MASK;
|
||
pETM->CONF |= ETM_CONF_BDMMODE(u8DebugMode);
|
||
}
|
||
|
||
/*********************************************************************************//*!
|
||
*
|
||
* @brief ETM中TOF频率大小的设置(ETM2).
|
||
*
|
||
* @param[in] pETM ETM2.
|
||
* @param[in] u8TOFNUM TOF频率数，大小0和31之间.
|
||
*
|
||
* @return none.
|
||
*
|
||
*********************************************************************************/
|
||
void ETM_SetTOFFrequency(ETM_Type *pETM, uint8_t u8TOFNUM)
|
||
{
|
||
ASSERT((ETM2 == pETM));
|
||
pETM->CONF &= ~ETM_CONF_NUMTOF_MASK;
|
||
pETM->CONF |= ETM_CONF_NUMTOF(u8TOFNUM);
|
||
}
|
||
|
||
/*********************************************************************************//*!
|
||
*
|
||
* @brief 交换通道CH（n）和通道CH（n+1）的输出结果(ETM2).
|
||
*
|
||
* @param[in] pETM ETM2.
|
||
* @param[in] ChannelPair 要被交换的通道数号，即n可为0,1,2.
|
||
*
|
||
* @return none.
|
||
*
|
||
*********************************************************************************/
|
||
void ETM_InvertChannel(ETM_Type *pETM, uint8_t u8ChannelPair)
|
||
{
|
||
ASSERT((ETM2 == pETM) && u8ChannelPair <= 2);
|
||
|
||
pETM->INVCTRL |= 1<<u8ChannelPair;
|
||
if(pETM->SYNCONF & ETM_SYNCONF_INVC_MASK)
|
||
{
|
||
pETM->SYNCONF |= ETM_SYNCONF_SYNCMODE_MASK;
|
||
if(pETM->SYNCONF & ETM_SYNCONF_SWINVC_MASK)
|
||
{
|
||
pETM->SYNC |= ETM_SYNC_SWSYNC_MASK;
|
||
}
|
||
else if(pETM->SYNCONF & ETM_SYNCONF_HWINVC_MASK)
|
||
{
|
||
pETM->SYNC |= ETM_SYNC_TRIG2_MASK;
|
||
|
||
#if defined(CPU_NV32)
|
||
SIM->SOPT |= SIM_SOPT_ETMSYNC_MASK;
|
||
|
||
#endif
|
||
}
|
||
}
|
||
else
|
||
{
|
||
}
|
||
}
|
||
|
||
/*****************************************************************************//*!
|
||
*
|
||
* @brief ETM模块初始化函数.
|
||
*
|
||
* @param[in] pETM 指向三个ETM定时器其中一个的基址.
|
||
* @param[in] pConfig 配置ETM模块的结构体.
|
||
*
|
||
* @return none.
|
||
*
|
||
*****************************************************************************/
|
||
void ETM_Init(ETM_Type *pETM, ETM_ConfigType *pConfig)
|
||
{
|
||
ASSERT((ETM0 == pETM) || (ETM1 == pETM) || (ETM2 == pETM));
|
||
if(ETM0 == pETM)
|
||
{
|
||
SIM->SCGC |= SIM_SCGC_ETM0_MASK;
|
||
}
|
||
else if(ETM1 == pETM)
|
||
{
|
||
SIM->SCGC |= SIM_SCGC_ETM1_MASK;
|
||
}
|
||
else
|
||
{
|
||
SIM->SCGC |= SIM_SCGC_ETM2_MASK;
|
||
}
|
||
|
||
/*关闭计数器*/
|
||
pETM->SC = 0;
|
||
pETM->MODE = pConfig->mode;
|
||
pETM->MOD = pConfig->modulo;
|
||
pETM->CNT = pConfig->cnt;
|
||
|
||
if( pETM->MODE & ETM_MODE_ETMEN_MASK )
|
||
{
|
||
/* 当 ETMEN = 1时, 下列寄存器可以写入 */
|
||
pETM->COMBINE = pConfig->combine;
|
||
pETM->CNTIN = pConfig->cntin;
|
||
pETM->SYNC = pConfig->sync;
|
||
pETM->OUTINIT = pConfig->outinit;
|
||
pETM->OUTMASK = pConfig->outmask;
|
||
pETM->DEADETME = pConfig->deadETMe;
|
||
pETM->EXTTRIG = pConfig->exttrig;
|
||
pETM->POL = pConfig->pol;
|
||
pETM->FMS = pConfig->fms;
|
||
pETM->FILTER = pConfig->filter;
|
||
pETM->FLTCTRL = pConfig->fltctrl;
|
||
pETM->FLTPOL = pConfig->fltpol;
|
||
pETM->CONF = pConfig->conf;
|
||
pETM->SYNCONF = pConfig->synconf;
|
||
pETM->SWOCTRL = pConfig->swoctrl;
|
||
pETM->PWMLOAD = pConfig->pwmload;
|
||
}
|
||
/* 写入状态控制寄存器来使能时钟*/
|
||
pETM->SC = pConfig->sc;
|
||
}
|
||
|
||
|
||
/*****************************************************************************//*!
|
||
*
|
||
* @brief 复位ETM模块.
|
||
*
|
||
* @param[in] pETM 指向三个ETM定时器其中一个的基址.
|
||
*
|
||
* @return none.
|
||
*
|
||
*****************************************************************************/
|
||
void ETM_DeInit(ETM_Type *pETM)
|
||
{
|
||
ASSERT((ETM0 == pETM) || (ETM1 == pETM) || (ETM2 == pETM));
|
||
pETM->SC = 0;
|
||
pETM->MOD = 0;
|
||
pETM->CNT = 0;
|
||
if(ETM2 == pETM)
|
||
{
|
||
pETM->MODE = 0x4;
|
||
pETM->COMBINE = 0;
|
||
pETM->CNTIN = 0;
|
||
pETM->SYNC = 0;
|
||
pETM->OUTINIT = 0;
|
||
pETM->OUTMASK = 0;
|
||
pETM->DEADETME = 0;
|
||
pETM->EXTTRIG = 0;
|
||
pETM->POL = 0;
|
||
pETM->FMS = 0;
|
||
pETM->FILTER = 0;
|
||
pETM->FLTCTRL = 0;
|
||
pETM->FLTPOL = 0;
|
||
pETM->CONF = 0;
|
||
pETM->SYNCONF = 0;
|
||
pETM->SWOCTRL = 0;
|
||
pETM->PWMLOAD = 0;
|
||
}
|
||
/* 禁止ETM模块的时钟 */
|
||
if (ETM0 == pETM)
|
||
{
|
||
SIM->SCGC &= ~SIM_SCGC_ETM0_MASK;
|
||
NVIC_DisableIRQ(ETM0_IRQn);
|
||
}
|
||
else if(ETM1 == pETM)
|
||
{
|
||
SIM->SCGC &= ~SIM_SCGC_ETM1_MASK;
|
||
NVIC_DisableIRQ(ETM1_IRQn);
|
||
}
|
||
else if (ETM2 == pETM)
|
||
{
|
||
SIM->SCGC &= ~SIM_SCGC_ETM2_MASK;
|
||
NVIC_DisableIRQ(ETM2_IRQn);
|
||
}
|
||
}
|
||
|
||
/*****************************************************************************//*!
|
||
*
|
||
* @brief 配置ETM通道, 包括通道状态及控制寄存器CnSC和通道计数值寄存器CnV.
|
||
*
|
||
* @param[in] pETM 指向三个ETM定时器其中一个的基址.
|
||
* @param[in] ETM_Channel ETM的通道号.
|
||
* @param[in] pTETMCH_Params 配置ETM通道参数的结构体.
|
||
*
|
||
* @return none.
|
||
*
|
||
*****************************************************************************/
|
||
void ETM_ChannelInit(ETM_Type *pETM, uint8_t u8ETM_Channel, ETM_ChParamsType *pTETMCH_Params)
|
||
{
|
||
ASSERT((ETM0 == pETM) || (ETM1 == pETM) || (ETM2 == pETM)); //断言检测通道的正确性
|
||
|
||
if (ETM0 == pETM)
|
||
{
|
||
ASSERT(u8ETM_Channel < 2);
|
||
SIM->SCGC |= SIM_SCGC_ETM0_MASK;
|
||
}
|
||
else if(ETM1 == pETM)
|
||
{
|
||
ASSERT(u8ETM_Channel < 2);
|
||
SIM->SCGC |= SIM_SCGC_ETM1_MASK;
|
||
}
|
||
else
|
||
{
|
||
ASSERT(u8ETM_Channel < 6);
|
||
SIM->SCGC |= SIM_SCGC_ETM2_MASK;
|
||
}
|
||
|
||
pETM->CONTROLS[u8ETM_Channel].CnSC = pTETMCH_Params->u8CnSC;
|
||
pETM->CONTROLS[u8ETM_Channel].CnV = pTETMCH_Params->u16CnV;
|
||
|
||
return;
|
||
}
|
||
|
||
/*****************************************************************************//*!
|
||
*
|
||
* @brief 配置级联模式及占空比(ETM2).
|
||
*
|
||
* @param[in] pETM ETM2.
|
||
* @param[in] ETM_Channel 奇通道数：1、3、5.
|
||
* @param[in] dutyCycle 设置占空比，若DutyCycle为10,那么占空比就为10%.
|
||
*
|
||
* @return none.
|
||
*
|
||
*****************************************************************************/
|
||
void ETM_SetDutyCycleCombine(ETM_Type *pETM, uint8_t u8ETM_Channel, uint8_t u8DutyCycle)
|
||
{
|
||
uint16_t cnv = pETM->CONTROLS[u8ETM_Channel-1].CnV;
|
||
uint16_t modulo = pETM->MOD;
|
||
|
||
ASSERT((1 == u8ETM_Channel) || (3 == u8ETM_Channel) || (5 == u8ETM_Channel));
|
||
|
||
cnv += (u8DutyCycle * (modulo+1)) / 100;
|
||
if(cnv > modulo)
|
||
{
|
||
cnv = modulo - 1;
|
||
}
|
||
pETM->CONTROLS[u8ETM_Channel].CnV = cnv ;
|
||
|
||
pETM->PWMLOAD |= ETM_PWMLOAD_LDOK_MASK | (1<<u8ETM_Channel);
|
||
}
|
||
|
||
/*****************************************************************************//*!
|
||
*
|
||
* @brief 配置寄存器 ETMx_SYNCONF部分位置位,其中里面包含了软件输出的控制是否由硬件触发HW或是否有软件出发SW(ETM2)
|
||
*
|
||
* @param[in] pETM ETM2.
|
||
* @param[in] u32ConfigValue 用来配置SYNCONF寄存器.
|
||
*
|
||
* @return none.
|
||
*
|
||
*****************************************************************************/
|
||
void ETM_SyncConfigActivate(ETM_Type *pETM, uint32_t u32ConfigValue)
|
||
{
|
||
ASSERT((ETM2 == pETM));
|
||
pETM->SYNCONF |= u32ConfigValue;
|
||
}
|
||
|
||
/*****************************************************************************//*!
|
||
*
|
||
* @brief 配置寄存器 ETMx_SYNCONF部分位清除,其中里面包含了软件输出的控制是否由硬件触发HW或是否有软件出发SW(ETM2)
|
||
*
|
||
* @param[in] pETM ETM2.
|
||
* @param[in] u32ConfigValue 用来配置SYNCONF寄存器.
|
||
*
|
||
* @return none.
|
||
*
|
||
*****************************************************************************/
|
||
void ETM_SyncConfigDeactivate(ETM_Type *pETM, uint32_t u32ConfigValue)
|
||
{
|
||
ASSERT((ETM2 == pETM));
|
||
pETM->SYNCONF &= ~u32ConfigValue;
|
||
}
|
||
|
||
/*****************************************************************************//*!
|
||
*
|
||
* @brief 设置回调函数入口.
|
||
*
|
||
* @param[in] pETM 指向三个ETM定时器其中一个的基址.
|
||
* @param[in] pfnCallback 回调函数地址.
|
||
*
|
||
* @return none.
|
||
*
|
||
*****************************************************************************/
|
||
void ETM_SetCallback(ETM_Type *pETM, ETM_CallbackPtr pfnCallback)
|
||
{
|
||
ETM_Callback[((uint32_t)pETM - (uint32_t)ETM0_BASE)>>12] = pfnCallback;
|
||
}
|
||
|
||
|
||
|
||
/*****************************************************************************//*!
|
||
*
|
||
* @brief ETM0通道中断服务函数.
|
||
*
|
||
* @param none
|
||
*
|
||
* @return none
|
||
*
|
||
*****************************************************************************/
|
||
void ETM0_Isr(void)
|
||
{
|
||
if(ETM_Callback[0])
|
||
{
|
||
ETM_Callback[0]();
|
||
}
|
||
}
|
||
|
||
/*****************************************************************************//*!
|
||
*
|
||
* @brief ETM1通道中断服务函数.
|
||
*
|
||
* @param none
|
||
*
|
||
* @return none
|
||
*
|
||
*****************************************************************************/
|
||
void ETM1_Isr(void)
|
||
{
|
||
if(ETM_Callback[1])
|
||
{
|
||
ETM_Callback[1]();
|
||
}
|
||
}
|
||
|
||
/*****************************************************************************//*!
|
||
*
|
||
* @brief ETM2通道中断服务函数.
|
||
*
|
||
* @param none
|
||
*
|
||
* @return none
|
||
*
|
||
*****************************************************************************/
|
||
void ETM2_Isr(void)
|
||
{
|
||
if(ETM_Callback[2])
|
||
{
|
||
ETM_Callback[2]();
|
||
}
|
||
}
|
||
|
||
|
||
|