Posted on January 04, 2017 at 12:36
Hi,
I am trying to use the burst DMA mode to update the HRTIM compare unit registers on a STM32F334 with the STM32 CUBEMX.
I am using this function to trigger the DMA update if I want to update the compare registers.
HAL_HRTIM_BurstDMATransfer(&hhrtim1,HRTIM_TIMERINDEX_TIMER_A,CompareUnit[0],4);
I also need to update the compare values for Timer B and C etc. Do I need to call the above function again with the corresponding Timer ID?
The following the initialization for the Timer and DMA.
pTimerCfg.InterruptRequests = HRTIM_TIM_IT_NONE;
pTimerCfg.DMARequests = HRTIM_TIM_DMA_NONE;
pTimerCfg.DMASrcAddress = (uint32_t)&CompareUnit[0];
pTimerCfg.DMADstAddress = (uint32_t)&(hhrtim1.Instance->sCommonRegs.BDMADR);
pTimerCfg.DMASize = 4;
pTimerCfg.PreloadEnable = HRTIM_PRELOAD_ENABLED;
pTimerCfg.PushPull = HRTIM_TIMPUSHPULLMODE_DISABLED;
pTimerCfg.FaultEnable = HRTIM_TIMFAULTENABLE_NONE;
pTimerCfg.FaultLock = HRTIM_TIMFAULTLOCK_READWRITE;
pTimerCfg.DeadTimeInsertion = HRTIM_TIMDEADTIMEINSERTION_DISABLED;
pTimerCfg.DelayedProtectionMode = HRTIM_TIMER_A_B_C_DELAYEDPROTECTION_DISABLED;
pTimerCfg.UpdateTrigger = HRTIM_TIMUPDATETRIGGER_NONE;
pTimerCfg.ResetTrigger = HRTIM_TIMRESETTRIGGER_MASTER_PER;
pTimerCfg.ResetUpdate = HRTIM_TIMUPDATEONRESET_ENABLED;
HAL_HRTIM_WaveformTimerConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, &pTimerCfg);
HAL_HRTIM_BurstDMAConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_A, HRTIM_BURSTDMA_CMP1|HRTIM_BURSTDMA_CMP2
|HRTIM_BURSTDMA_CMP3|HRTIM_BURSTDMA_CMP4) != HAL_OK);
HAL_HRTIM_BurstDMAConfig(&hhrtim1, HRTIM_TIMERINDEX_TIMER_B, HRTIM_BURSTDMA_CMP1|HRTIM_BURSTDMA_CMP2
|HRTIM_BURSTDMA_CMP3|HRTIM_BURSTDMA_CMP4) ;
Any help is appreciated it!. Cheers.
