3.2.24.3 DIAG_SERCOM_USART_Dma

Returns the status of the USART_DMA diagnostic

This function verifiess that the DMA can transfer data from peripheral to user memoryy. 

DIAG_TEST_STATUS 
DIAG_SERCOM_USART_Dma
(
    DIAG_SERCOM_USART_PERIPHS sercom_usart_periph,
    DMAC_CHANNEL dma_channel
);

Diagnostic verifies the following faults do not exist

  • DMA events not generated

Operating Mode

  • Interface can be used at POST and ‘On Demand’
Precondition
  • none

Parameters

  • sercom_usart_periph - enum value for SERCOM_USART peripheral
  • DMAC_CHANNEL dma_channel

Returns

  • DIAG_TEST_PASSED if no faults were found, otherwise, DIAG_TEST_FAILED.