STM32G484 - DMA TIM5->CNT to MEM using TIM2_UP request not working

[klopcic]

DMA transfer is not working, despite everyhing being setup correctly at first glance. Does anyone know what else could be wrong?

DMA1->CCR5: is enabled (EN), MSIZE is 32bit, PSIZE is 32bit, mem. inc enabled, per. inc disabled, circ mode enabled, DIRection is per -> mem,

DMA1->CNDTR5: 1 (transfer one unit)

DMA1->CPAR5: set to the TIM5->CNT address

DMA1->CMAR5: set to uint32_t variable in ram

DMAMUX->C4CR: DMAREQ_ID is 60 (TIM2_UP as per RM, table 91),

DMA1->CCR5

 

DMA1->CNDTR5

DMA1->CPAR5

DMA1->CMAR5

DMAMUX->C4CR 

TIM2

[klopcic · Accepted solution]

It was an oversight on my part - forgot to enable DMA requests. Now everything is functioning properly.

__HAL_TIM_ENABLE_DMA(&htim2, TIM_DMA_UPDATE or TIM_DMA_CC3);