SLAAEN4 March   2025 MSPM0G1106 , MSPM0G1107 , MSPM0G1506 , MSPM0G1507 , MSPM0G1518 , MSPM0G1519 , MSPM0G3106 , MSPM0G3106-Q1 , MSPM0G3107 , MSPM0G3107-Q1 , MSPM0G3506 , MSPM0G3506-Q1 , MSPM0G3507 , MSPM0G3507-Q1 , MSPM0G3518 , MSPM0G3518-Q1 , MSPM0G3519 , MSPM0G3519-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
    1. 1.1 Bridge Between CAN and UART
  5. 2Implementation
    1. 2.1 Principle
    2. 2.2 Structure
  6. 3Software Description
    1. 3.1 Software Functionality
    2. 3.2 Configurable Parameters
    3. 3.3 Structure of Custom Element
    4. 3.4 Structure of FIFO
    5. 3.5 UART Receive and Transmit (Transparent Transmission)
    6. 3.6 UART Receive and Transmit (Protocol Transmission)
    7. 3.7 CAN Receive and Transmit
    8. 3.8 Application Integration
  7. 4Hardware
  8. 5Application Aspects
    1. 5.1 Flexible structure
    2. 5.2 Optional Configuration for CAN
    3. 5.3 CAN Bus Multi-Node Communication Example
  9. 6Summary
  10. 7References

3.6 UART Receive and Transmit (Protocol Transmission)

For UART receive, there are two global variables defined in bridge_uart.c.

uint8_t gUartReceiveGroup[UART_RX_SIZE];
Custom_Element gUART_RX_Element;

The following is the process for UART receive.

  1. Call getUartRxMsg() to detect header to store the complete message into gUartReceiveGroup.
  2. Call processUartRxMsg() to extract information from gUartReceiveGroup and store the information in gUART_RX_Element.
  3. Put gUART_RX_Element into gUart2Can_FIFO.

For UART transmit, there are two global variables defined in bridge_uart.c.

uint8_t gUartTransmitGroup[UART_TX_SIZE];
Custom_Element gUART_TX_Element;

The following is the process for UART transmit.

  1. Get gUART_TX_Element from gCan2Uart_FIFO.
  2. Call processUartTxMsg() to get information from gUART_TX_Element and store the information into gUartTransmitGroup.
  3. Call sendUartTxMsg() to transmit gUartTransmitGroup through UART.