MPC5634-EMIOS-SAIC code

陈秀侠 — Sun, 17 Jan 2016 10:48:35 GMT

Now I want to capture eMIOS_9 channel output PWM(duty cycle 20%,frequency is 1KHz),using eMIOS_0 channel for capture.

But I cannot enter eMIOS_0_isr interrupt function,Is there any wrong with my code?

////////////////////////////////////////////////////////////////////////////////

#include "MPC5634M_MLQC80.h"

#define LED3 SIU.GPDO[190].R

#define LED4 SIU.GPDO[191].R

uint32_t data1,data2;

uint32_t delaytime;

void Config_PLL(void)

{

FMPLL.SYNCR.R = 0x03080030; /* 8 MHz crystal */

while (FMPLL.SYNSR.B.LOCK != 1) {}; /* Wait for LOCK = 1 */

FMPLL.SYNCR.R = 0x03080430; /* Enable FM */

while (FMPLL.SYNSR.B.LOCK != 1) {}; /* Wait for FMPLL to LOCK again */

FMPLL.SYNCR.R = 0x16000000; /* Final value for 64 MHz: RFD=0 */

}

void init_led(void)

{

//EMIOS9，10，11，12对应PCR188，189，190，191

//SIU.PCR[188].R = 0x0203; //EMIOS9,OUTPUT

//SIU.PCR[189].R = 0x0203; //EMIOS10,OUTPUT

SIU.PCR[190].R = 0x0203; //EMIOS11,OUTPUT

SIU.PCR[191].R = 0x0203; //EMIOS12,OUTPUT

}

void init_EMIOS(void)

{

EMIOS.MCR.B.GPRE=63; // 设置分频系数为63+1=64,分频后始终为1MHz

EMIOS.MCR.B.ETB=0; // 禁止外部时基，设置通道23作为总线A控制时基

EMIOS.MCR.B.GPREN=1; // 使能全局分频器

EMIOS.MCR.B.GTBE=1; // 使能全局时基

EMIOS.MCR.B.FRZ=1; // 在调试模式下停止通道

/* 初始化eMIOS23：作为所有通道的时基Bus A*/

EMIOS.CH[23].CADR.R=999; // 周期是999=1=1000 clocks(1ms)

EMIOS.CH[23].CCR.B.MODE=0x50; //设置为缓冲模数计数器模式MCB

EMIOS.CH[23].CCR.B.BSL=0x3; //使用1MHz的内部计数器作为时钟源

EMIOS.CH[23].CCR.B.UCPRE=0; //设置通道分频值为1

EMIOS.CH[23].CCR.B.FREN=1; //在调试模式下冻结通道计数

EMIOS.CH[23].CCR.B.UCPREN=1; //使能分频器:使用默认预分频值为1

/* 初始化eMIOS9：占空比20% */

EMIOS.CH[9].CADR.R=100; // 设置首边沿的匹配值

EMIOS.CH[9].CBDR.R=900; // 设置尾边沿的匹配值

EMIOS.CH[9].CCR.B.BSL=0x0; // 使用Bus A

EMIOS.CH[9].CCR.B.EDPOL=0; // 设置极性：A匹配时清0，B匹配时置1

EMIOS.CH[9].CCR.B.MODE=0x60; //选择OPWMB模式

SIU.PCR[188].R = 0x0600; //EMIOS9对应SIU.PCR188

/*初始化eMIOS0：输入捕捉SAIC模式 */

EMIOS.CH[0].CCR.B.MODE=0x02; //设置SAIC

EMIOS.CH[0].CCR.B.BSL=0x0; //使用使用Bus A：1MHz的内部计数器作为时钟源

//EMIOS.CH[0].CCR.B.IF = 1; //设置输入滤波器

//EMIOS.CH[0].CCR.B.FCK= 1; //滤波器时钟为主时钟

EMIOS.CH[0].CCR.B.FEN = 1; //使能输入捕捉中断

//EMIOS.CH[0].CCR.B.DMA = 0; //FLAG用作中断请求

EMIOS.CH[0].CCR.B.EDSEL=0; //设置上升沿触发中断

EMIOS.CH[0].CCR.B.EDPOL= 1;

//EMIOS.CH[0].CCR.B.UCPRE = 0; //设置分频值为1

//EMIOS.CH[0].CCR.B.UCPREN = 1; //使能分频器

//EMIOS.CH[0].CCR.B.FREN=1; //在调试模式下冻结通道计数

INTC.PSR[51].R = 3;

SIU.PCR[179].R = 0x0503; //EMIOS0对应SIU.PCR179

}

/*******************************************************************************

/* SAIC中断函数:eMIOS_0_isr */

/*******************************************************************************/

void eMIOS_0_isr(void)

{

//LED4 ^= 1;

if(EMIOS.CH[0].CSR.B.FLAG == 1)

{

//EMIOS.CH[0].CSR.B.FLAG = 1; //清除标志位

data1 = data2;

data2 = EMIOS.CH[0].CADR.R; //记录上升沿对应的时刻

delaytime = data2- data1; //计算时间间隔

LED4 ^= 1;

EMIOS.CH[0].CSR.B.FLAG = 1; //清除标志位

}

/************************************************************/

/* 主函数 */

/************************************************************/

void main(void)

{

vuint32_t i = 0; /* Dummy idle counter */

Config_PLL();

init_led();

init_EMIOS();

INTC_InitINTCInterrupts();

INTC_InstallINTCInterruptHandler(eMIOS_0_isr,51,3);

INTC.CPR.B.PRI = 0; /* MPC555x: Lower INTC's current priority */

/* Loop forever */

for (;;)

{

i++;

LED3 ^= 1;

}

////////////////////////////////////////////////////////////////////////////////

Re: MPC5634-EMIOS-SAIC code

PetrS — Mon, 18 Jan 2016 08:32:25 GMT

Hi,

Seems the eMIOS setting is correct. be sure the external signal is really fed into proper pad and then check if the channel 0 flag is really set. If yes then interrupts may not be properly initialized.

Try to test attached code which do the same.

BR, Petr

Re: MPC5634-EMIOS-SAIC code

陈秀侠 — Tue, 19 Jan 2016 14:40:42 GMT

Hi,

I checked my code again and finded the error in my interrupt functions:

////////////////////////////////////////////////////////////////////////////////////////////////////////////////

void eMIOS_0_isr(void)

{

//LED4 ^= 1;

if(EMIOS.CH[0].CSR.B.FLAG == 1)

{

EMIOS.CH[0].CSR.B.FLAG = 1; //清除标志位

data1 = data2;

data2 = EMIOS.CH[0].CADR.R;

// delaytime = 0x0000ffff&(data2- data1);

if(data2 > data1)

{

delaytime = data2 - data1;

}

//else

//{

// delaytime = (0xFFFFFF - data1) + data2;

//}

LED4 ^= 1;

}

////////////////////////////////////////////////////////////////////////

Thank you for your answer,I'll test your demo tomorrow.

Best wishes!

Re: MPC5634-EMIOS-SAIC code

2039759305 — Tue, 23 Oct 2018 13:35:11 GMT

Could you do me a favor?I am in trouble with IPWM setting of eMIOS channel of MPC5634M,especially the setting of interrupt .Do you have the demo of IPWM setting?I would be appreciated with your help.

Re: MPC5634-EMIOS-SAIC code

陈秀侠 — Sat, 27 Oct 2018 07:43:54 GMT

It's too long time, I find a demo for IPWM, and you check it.

Re: MPC5634-EMIOS-SAIC code

2039759305 — Tue, 30 Oct 2018 01:22:32 GMT

Thank you very much,I will check it .

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