STM32G474+HRTIM+PWM+DMA+SINE

[Oli98]

Dear reader, 
I attempted to adapt the tutorial outlined in STM32F3348-DISCO HRTIM DMA PWM Sine Wave - STMicroelectronics Community to my STM32G474E-DPOW1 board to create a PWM signal with sinusoidally varying duty cycle using a look up table.

Attached is my main.c with the MX_HRTIM1_Init function. If there's any more information required please let me know

Any help would be greatly appreciated, thankyou

Oliver

[KDJEM.1]

Hello @Oli98;

 

Could you please refer to Getting started with HRTIM - stm32mcu wiki and get inspired to create your own project. This wiki helps you learn about HRTIM and provides a simple application to create a single PWM.

 

Thank you.

Kaouthar

[Oli98]

Hi Kaouthar,

I began trying to adapt  this example from https://wiki.st.com/stm32mcu/wiki/Getting_started_with_HRTIM for the burst dma mode section by changing the reg_update as follows:

static uint32_t Reg_Update [] =

{

PERIOD/16, PERIOD/8, PERIOD/4, PERIOD/2, PERIOD,

};

 I also changed HAL_HRTIM_MspInit as per the tutorial and updated as follows for continuous dma updates:

hdma_hrtim1_a.Instance = DMA1_Channel1;

hdma_hrtim1_a.Init.Request = DMA_REQUEST_HRTIM1_A;

hdma_hrtim1_a.Init.Direction = DMA_MEMORY_TO_MEMORY;

hdma_hrtim1_a.Init.PeriphInc = DMA_PINC_DISABLE;

hdma_hrtim1_a.Init.MemInc = DMA_MINC_ENABLE;

hdma_hrtim1_a.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;

hdma_hrtim1_a.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;

hdma_hrtim1_a.Init.Mode = DMA_CIRCULAR;

hdma_hrtim1_a.Init.Priority = DMA_PRIORITY_LOW;

[tblack_]

I am stuck trying to do the same thing. Tutorial works fine but not when doing the period 

I am just trying to update the period 

uint32_t Reg_Update [] =

{

59999

};

 

if(HAL_HRTIM_BurstDMATransfer(&hhrtim, HRTIM_TIMERID_TIMER_B, (uint32_t) Reg_Update, sizeof(Reg_Update)/sizeof(uint32_t)) != HAL_OK) //Add a breakpoint here

{

Error_Handler();

}

 

 

I am able to do the Compare 1 reg just like the tutorial, but I cannot do it for the period.