如何使用带MCC版本3的MTouch&PWM&EPWM

好的，我想我会再试一次。我用MPLabX IDE 3.35MCC v3.15.0ICD 3,16F1827在我自己的板上。现在每个pwm输出引脚上有4个LED。对GRUNDI的折衷可以使用简单的端口写来打开和关闭。CCP3和CCP4工作良好。ECP1和ECP2没有。（我想要单个输出）创建了一个新项目。在参考资料中的INTOSC 8MHz时钟No PLLTMR4和ECCP1将这个代码插入到main.cTried，在while循环之前插入以下代码，以查看是否有东西没有被正确初始化。再一次通过简单的端口b设置，我可以闪烁LED。这是MCC生成的EPWM.c初始化：有人看到我做错了什么吗？感谢任何帮助！谢谢，克雷格



      以下为原文

    Ok I thought I would try this one more time.
I'm using MPLabX IDE 3.35
MCC v3.15.0
ICD 3,   16F1827 in my own board Currently has 4 LEDs on each pwm output pin. Refrenced to ground
I can use simple port writes to turn them on and off.
CCP3 and CCP4 work fine.  ECCP1 and ECCP2 do not.  (I want single outputs)
Created a new project.
INTOSC 8MHz Clock No PLL
TMR4 and ECCP1 in Resources in MCC
Added this code to main.c
while (1)
    {
    for (int duty = 1; duty < 255; duty = duty + 10)
        {
            EPWM1_LoadDutyValue(duty);
            for (int delay = 1; delay < 500; delay++)
            {;}
        } // Add your application code
    }
 
Tried inserting the following before the while loop to see if something was not initialized correctly.
Toggled TRIS to make sure.
 
 PIN_MANAGER_Initialize();
    TMR4_Initialize();
    TMR4_StartTimer();
    EPWM1_Initialize ();
    TRISB = 0xFF;
    TRISB = 0xF7;
 
Code compiles fine
Writes to pic fine.
No PWM from P1A which is PortB pin 3.
 
Again with simple setting of port b I can flash the LED.
This is the MCC generated  EPWM.c initialization :
void EPWM1_Initialize (void)
{
    // Set the PWM to the options selected in MPLAB(c) Code Configurator
    
    // CCP1M P1A,P1C: active high; P1B,P1D: active high; DC1B 1; P1M single;
    CCP1CON = 0x1C;
    
    // CCP1ASE operating; PSS1BD low; PSS1AC low; CCP1AS disabled;
    ECCP1AS = 0x00;
    
    // P1RSEN automatic_restart; P1DC 0;
    PWM1CON = 0x80;
    
    // STR1D P1D_to_port; STR1C P1C_to_port; STR1B P1B_to_port; STR1A P1A_to_port; STR1SYNC start_at_begin;
    PSTR1CON = 0x00;
    
    // CCPR1L 62;
    CCPR1L = 0x3E;
    
    // CCPR1H 0;
    CCPR1H = 0x00;
    
    
    // Selecting Timer4
    CCPTMRS0bits.C1TSEL = 0x1;
}

 
Anyone see what I'm doing wrong?
Grateful for any help!
Thanks,
Craig
 
 
 
 
 

对不起，我在这里张贴，这是EPWM问题，而不是MtAccess。



      以下为原文

    Sorry I posted that here, this is EPWM issue not mTouch.

我把这个线程分割成自己的，以帮助它获得更多的可见性。你可能想改变标题——它不会让我为你做这件事。我也会指出一些人来看看他们是否有任何建议。



      以下为原文

    I split this thread into its own to help get it some more visibility. You may want to change the title - it won't let me do that for you. I'll also point some people to this to see if they have any suggestions.

我用一个CCP3和ECP1创建了一个项目，两个都使用定时器2。PWM工作EPWM没有。我会尝试新版本的MCC看看会发生什么。这是EPWM初始化代码：



      以下为原文

    I created a project with one CCP3 and ECCP1, both using
timer 2.  PWM works EPWM does not.
I'll try the new version of MCC to see what happens.
 
This is the EPWM initializing code:
void EPWM1_Initialize (void)
{
    // Set the PWM to the options selected in MPLAB(c) Code Configurator
    
    // CCP1M P1A,P1C: active high; P1B,P1D: active high; DC1B 3; P1M single;
    CCP1CON = 0x3C;
    
    // CCP1ASE operating; PSS1BD low; PSS1AC low; CCP1AS disabled;
    ECCP1AS = 0x00;
    
    // P1RSEN automatic_restart; P1DC 0;
    PWM1CON = 0x80;
    
    // STR1D P1D_to_port; STR1C P1C_to_port; STR1B P1B_to_port; STR1A P1A_to_port; STR1SYNC start_at_begin;
    PSTR1CON = 0x00;
    
    // CCPR1L 124;
    CCPR1L = 0x7C;
    
    // CCPR1H 0;
    CCPR1H = 0x00;
    
    
    // Selecting Timer2
    CCPTMRS0bits.C1TSEL = 0x0;
}

void EPWM1_LoadDutyValue(uint16_t dutyValue)
{
   // Writing to 8 MSBs of pwm duty cycle in CCPRL register
    CCPR1L = ((dutyValue & 0x03FC)>>2);
    
   // Writing to 2 LSBs of pwm duty cycle in CCPCON register
    CCP1CON = (CCP1CON & 0xCF) | ((dutyValue & 0x0003)<<4);
}

找到它了！PSTR1CON需要设置为0x01（STR1A）才能使P1A工作。即使我没有使用转向，这个位也需要设置，否则它是一个端口引脚。我看不出用MCC中的转向接口来设置这个的方法。如果我启用转向和检查PxA，我仍然不能在P1A上得到输出。我现在有4个PWM o。乌托邦！克雷格



      以下为原文

    Found it!
PSTR1CON needs to be set to 0x01 (STR1A) to get P1A to work.
Even though i'm not using steering this bit needs to be set otherwise it is a port pin.
I don't see a way to set this using the steering interface in MCC.
If I enable steering and check PxA I still do not get output on P1A.
I now have 4 PWM outputs!
Craig
 

令人惊叹的！我试过了，效果很好！我可以完成我的计划。我的妻子谢谢你。谢谢。



      以下为原文

    Awesome!
I just tried it.
Works like a charm!
I can finish my project.
My wife thanks you all.
 
Thanks.
Craig