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

1 Introduction

Based on different applications, there are many communication methods between devices. MCUs today usually support more than one communication method. For example, MSPM0 can support UART, SPI, CAN, and so on for a specific device. When devices transfer data over different communication interfaces, a bridge is constructed.

For CAN and UART, a CAN-UART bridge acts as a translator between the two interfaces. CAN-UART bridge allows a device to send and receive information on one interface and receive and send the information on the other interface.

This application note describes the software and hardware designs used in creating and using the CAN-UART bridge. The MSPM0G3507 microcontroller (MCU) can be used as a solution by providing CAN and UART communication interfaces. The accompanying demo uses the MSPM0G3507 with 2Mbps CANFD and 9600 baud rate UART to demonstrate transceiving data between channels.