PWM (PWM12) Problems with TMS320F2812

Hey,

I´ve got some trouble with the PWM12 Channel and probably need some help...

I have to to use 6 independent PWM Channels with the same compare values. The other 5 PWM(PWM2, 4, 6, 8, 10) work well but the PWM12 fools around. The Pin is steady on high level and I just get a PWM-Signal on widly differential compare values.

I´ve attached some images of the PWMs. Oben means the upper plot and unten the lower ;-)  PWM6(EV-A) should be the equivalent to PWM12 on EV-B!?

I´ve already changed the device with the same result.  I use the eZdsp TMS320F2812 board from Spectrum digital with a XD510LC debug interface and CCS. The Pins aren´t connected to anything else except the scope.

[URL=http://www.pic-upload.de/view-25396669/scope_1.png.html][IMG]http://www11.pic-upload.de/thumb/28.11.14/f6e5rr8qvj2p.png[/IMG][/URL]
[URL=http://www.pic-upload.de/view-25396667/scope_2.png.html][IMG]http://www11.pic-upload.de/thumb/28.11.14/dnosckcaqf9o.png[/IMG][/URL]
[URL=http://www.pic-upload.de/view-25396668/scope_3.png.html][IMG]http://www11.pic-upload.de/thumb/28.11.14/857fy4zvpu66.png[/IMG][/URL]
[URL=http://www.pic-upload.de/view-25396671/scope_4.png.html][IMG]http://www11.pic-upload.de/thumb/28.11.14/34blrolsvr9x.png[/IMG][/URL]
[URL=http://www.pic-upload.de/view-25396670/scope_5.png.html][IMG]http://www11.pic-upload.de/thumb/28.11.14/t2xr46krnvwi.png[/IMG][/URL]
[URL=http://www.pic-upload.de/view-25396672/scope_6.png.html][IMG]http://www11.pic-upload.de/thumb/28.11.14/nv7tkeky9ful.png[/IMG][/URL]

Actually I tried to use the  ev_pwm Code example with some edits to synchronize EV-A and EV-B.

Thank you in advance! 

   GpioMuxRegs.GPAMUX.all = 0x01FF; // EVA PWM 1-6  pins
   GpioMuxRegs.GPBMUX.all = 0x00FF;

void init_eva()
{
// EVA Configure T1PWM, T2PWM, PWM1-PWM6 
// Initalize the timers
   // Initalize EVA Timer1 
   EvaRegs.T1PR = 0xFFFF;       // Timer1 period
   EvaRegs.T1CMPR = 0x3C00;     // Timer1 compare
   EvaRegs.T1CNT = 0x0000;      // Timer1 counter
   // TMODE = continuous up/down
   // Timer enable
   // Timer compare enable
   EvaRegs.T1CON.all = 0x1042;   


  // Initalize EVA Timer2 
  EvaRegs.T2PR = 0x0FFF;       // Timer2 period
  EvaRegs.T2CMPR = 0x3C00;     // Timer2 compare
  EvaRegs.T2CNT = 0x0000;      // Timer2 counter
  // TMODE = continuous up/down
  // Timer enable
  // Timer compare enable
  EvaRegs.T2CON.all = 0x1042;   


  // Setup T1PWM and T2PWM
  // Drive T1/T2 PWM by compare logic
  EvaRegs.GPTCONA.bit.TCMPOE = 1;
  // Polarity of GP Timer 1 Compare = Active low
  EvaRegs.GPTCONA.bit.T1PIN = 1;
  // Polarity of GP Timer 2 Compare = Active high
  EvaRegs.GPTCONA.bit.T2PIN = 2;

  // Enable compare for PWM1-PWM6
  EvaRegs.CMPR1 = 0x3C00;
  EvaRegs.CMPR2 = 0x3C00;
  EvaRegs.CMPR3 = 0x3C00;
    
  // Compare action control.  Action that takes place
  // on a cmpare event
  // output pin 1 CMPR1 - active high
  // output pin 2 CMPR1 - active low
  // output pin 3 CMPR2 - active high
  // output pin 4 CMPR2 - active low
  // output pin 5 CMPR3 - active high
  // output pin 6 CMPR3 - active low
  EvaRegs.ACTRA.all = 0x0666;
  EvaRegs.DBTCONA.all = 0x0000; // Disable deadband
  EvaRegs.COMCONA.all = 0xA600;
} 

void init_evb()
{

// EVB Configure T3PWM, T4PWM and PWM7-PWM12
// Step 1 - Initialize the Timers

  // Initialize EVB Timer3 
  // Timer3 controls T3PWM and PWM7-12
  EvbRegs.T3PR = 0xFFFF;       // Timer3 period
  EvbRegs.T3CMPR = 0x3C00;     // Timer3 compare
  EvbRegs.T3CNT = 0x0000;      // Timer3 counter
  // TMODE = continuous up/down
  // Timer enable
  // Timer compare enable
  EvbRegs.T3CON.all = 0x1042;   

  // Initialize EVB Timer4 
  // Timer4 controls T4PWM
  EvbRegs.T4PR = 0x0FFF;       // Timer4 period
  EvbRegs.T4CMPR = 0x3C00;     // Timer4 compare
  EvbRegs.T4CNT = 0x0000;      // Timer4 counter
  // TMODE = continuous up/down
  // Timer enable
  // Timer compare enable
  EvbRegs.T4CON.all = 0x1042;   

  // Setup T3PWM and T4PWM

  //  EvbRegs.COMCONB.bit.FCMP6OE = 0;   
  // Drive T3/T4 PWM by compare logic
  EvbRegs.GPTCONB.bit.TCMPOE = 1;
  // Polarity of GP Timer 3 Compare = Active low
  EvbRegs.GPTCONB.bit.T3PIN = 1;
  // Polarity of GP Timer 4 Compare = Active high
  EvbRegs.GPTCONB.bit.T4PIN = 2;
 
  // Enable compare for PWM7-PWM12
  EvbRegs.CMPR4 = 0x3C00;
  EvbRegs.CMPR5 = 0x3C00;
  EvbRegs.CMPR6 = 0x3C00;
    
  // Compare action control.  Action that takes place
  // on a cmpare event
  // output pin 1 CMPR4 - active high
  // output pin 2 CMPR4 - active low
  // output pin 3 CMPR5 - active high
  // output pin 4 CMPR5 - active low
  // output pin 5 CMPR6 - active high
  // output pin 6 CMPR6 - active low
  EvbRegs.ACTRB.all = 0x0666;
  EvbRegs.DBTCONB.all = 0x0000; // Disable deadband
  EvbRegs.COMCONB.all = 0xA600;
}