MPC5606S PWM output without using a Unified Channel

[akhilprasad]

In MPC5606S, can we get PWM output in any particular channel without using a Unified Channel(23,16,8).

[PetrS]

Hi,

No, this is not possible for eMIOS channels 9-15. See Tables 9-2 and 9-3 of the Reference manual.

BR, Petr

[akhilprasad]

Thank you Petr. 

Is there any way i can get pwm output in eMIOSB channels 16 to 23 without using Unified channels(16 or 23).

I got pwm output when i configured unified channel 23/16. But i need to get output in channels(16 to 23) without using unified channels. Is it possible to do so ?

[PetrS]

Configure channels to OPWFMB mode which is available for all channels on eMIOS 1 module as per Table 9-3.

The internal channel counter is automatically selected as the time base when this mode is selected.

BR, Petr

[akhilprasad]

ok.. 

I configured channels in OPWMB mode.

Can u ples share me a code configuring channel in OPWMB and without using any unified channels.

[PetrS]

The OPWMB mode have to use other counter bus (channels 16 or 23). The OPWFMB mode does not...

Here is basic code for OPWFMB mode...

void initEMIOS(void) {

  EMIOS_1.MCR.B.GPRE= 63;     /* Divide 64 MHz sysclk by 63+1 = 64 for 1MHz eMIOS clk*/

  EMIOS_1.MCR.B.ETB = 0;      /* External time base is disabled; */

  EMIOS_1.MCR.B.GPREN = 1;     /* Enable eMIOS clock */

  EMIOS_1.MCR.B.GTBE = 1;                         /* Enable global time base */

  EMIOS_1.MCR.B.FRZ = 1;                            /* Enable stopping channels when in debug mode */

}

void initEMIOSch(void) {       /* EMIOS CH : Output Pulse Width & Freq Modulation*/

                                /*           Provide 10KHz output (100usec period) */

                                /* Input clock is eMIOS clk of 1MHz (1 usec period)*/

  EMIOS_1.CH[17].CBDR.R = 99;      /* Period = 1 usec x (99+1) = 100 usec, 10KHz*/

  EMIOS_1.CH[17].CADR.R = 30;       /* Duty cycle  */

  EMIOS_1.CH[17].CCR.B.UCPRE = 0;  /* Channel counter uses divide by (0+1) prescaler */

  EMIOS_1.CH[17].CCR.B.UCPEN = 1; /* Channel counter's prescaler is loaded & enabled*/

  EMIOS_1.CH[17].CCR.B.EDPOL = 1;         /* Polarity is active high */

  EMIOS_1.CH[17].CCR.B.MODE= 0x58; /* Mode= 0PWFMB */

}

BR, Petr

[akhilprasad]

Thanks a lot Petr. The information was very much useful. I will try the code.