MDMA Block transfer only transfers one block

[shahaf321]

Hi all, i am trying to use MDMA to transfer data from a cyclic ADC-DMA buffer

my ADC buffer is of x size and it is cyclic: adc_buffer[x]

and i want to transfer its data via MDMA to a larger buffer while its sampling

meaning that after every ADC iteration the MDMA should transfer the data into the larger buffer N Times

sampling_buffer[x*N]

like in the picture below:

The problem is that only the first part of my buffer is being transferred to the larger buffer and then MDMA remains "busy".

Will appreciate any help :)

 

this is my my code (roughly)

#define MDMA_BlOCKS_N 4
#define ADC1_BUFFER_SIZE 10

MDMA_HandleTypeDef hmdma_mdma_channel0_dma1_stream1_tc_0;

uint16_t adc1_buffer[ADC1_BUFFER_SIZE];
uint16_t adc1_samples[ADC1_BUFFER_SIZE*MDMA_BlOCKS_N]

int main(void)
{

//configuring and starting ADC with DMA.....////

.

.

//

MX_MDMA_Init();
HAL_MDMA_Start_IT(&node_mdma_channel0_dma1_stream1_tc_1,
(uint32_t)&adc1_buffer,
(uint32_t)&adc1_samples,
sizeof(uint16_t) * ADC1_BUFFER_SIZE,
MDMA_BlOCKS_N);
}