STM32L476 DMA_TEST

int TestDMAWriteMultBlock(unsigned int sector){

      unsigned int count = 2;
      volatile char rdata_1024[1024] __attribute__((aligned));
      for(int i = 0; i<1024; i++) {
              rdata_1024[i] = '8';
          }
      volatile uint8_t wres, rres;

      wres = BSP_SD_WriteBlocks_DMA((uint32_t*) wdata_1024,sector,count);
      rres = BSP_SD_ReadBlocks_DMA((uint32_t*) rdata_1024, sector, count);

      return compare_buff(wdata_1024, rdata_1024, 1024);

}