2.3.3.2 COM_FrameTransfer()
com_adapter_result_t COM_FrameTransfer (uint8_t * receiveBufferPtr, uint16_t * receiveIndexPtr)
Receive or send byte over SERCOM.
When receiving this function will push data bytes into the buffer provided until a complete frame is received. When sending this function uses the static send buffer defined in communication adapter file to send out bytes until it is complete.
For UART, this function does not send data out because it is asynchronous, but for other host driven protocols this function controls the transfer in both directions.
| in,out | receiveBufferPtr |
- Pointer to the buffer provided to SERCOM |
| in,out | receiveIndexPtr |
- Pointer to the number of bytes successfully received by SERCOM |
COM_PASS - SERCOM has received a complete frame and is ready for further processing COM_BUSY - SERCOM still loading the buffer COM_BUFFER_ERROR - SERCOM received too many or encountered a data error COM_FAIL - An error occurred in SERCOM |