TMS320F28379D: Inquiries about the ePWM Using DMA example ??

Lee,

Major code modifications have been highlighted below. Hope this helps.

#define BURST         2 // 2 words / burst
#define TRANSFER    5 // 5 bursts / transfer

uint16_t compareConfigs[TRANSFER*BURST] =
{
   //CMPA   ,   CMPB
   32U      ,   30U
   32U      ,   30U
   32U      ,   30U
   12U      ,   50U
   32U      ,   30U
}


//BURST_SIZE               = 2 // 2 words / burst
//SRC_BURST_STEP    = 1 // SRC_ADDR_ACTIVE += 1
//DST_BURST_STEP    = 2 // DST_ADDR_ACTIVE += 2

DMA_configAddresses(DMA_CH5_BASE, (uint16_t *)(myEPWM1_BASE + EPWM_O_CMPA), compareConfigs);

DMA_configBurst(DMA_CH5_BASE,BURST,1,2);

//SRC_WRAP_SIZE       = 1 // After 1 burst wrap around the address
//SRC_WRAP_STEP      = 2 // SRC_BEG_ADDR_ACTIVE += 2
//DST_WRAP_SIZE        = 1 // After 1 burst wrap around the address
//DST_WRAP_STEP       = 0 // DST_BEG_ADDR_ACTIVE += 0

DMA_configWrap(DMA_CH5_BASE, 1, 2, 1, 0);

//TRANSFER_SIZE            = 5     // 5 bursts / transfer
//SRC_TRANSFER_STEP = -10 // SRC_ADDR_ACTIVE += -10
//DST_TRANSFER_STEP = 0    // DST_ADDR_ACTIVE += 0

DMA_configTransfer(DMA_CH5_BASE,TRANSFER,-10,0);

Make sure to enable continuous mode and one-shot mode disabled.

Regards,

Manoj