3.2.24.8 DIAG_SERCOM_USART_TransmitBufOvf

Returns the status of the USART_LOOPBACK diagnostic

This function verifies messages more than the size of the FIFO can be sent over the interface using external loopback without checking for reception, and verify a buffer overflow (BUFOFV) occurs.

DIAG_TEST_STATUS 
DIAG_SERCOM_USART_TransmitBufOvf
(
    DIAG_SERCOM_USART_PERIPHS sercom_usart_periph
);

Diagnostic verifies the following faults do not exist

  • Transmitted data is incorrect

  • Received data is incorrect

  • Interrupts not generated

  • Interrupt cannot be cleared

Operating Mode

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

Parameters

  • sercom_usart_periph - enum value for SERCOM_USART peripheral

Returns

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