1.14 MCAN FD Interrupt
This example shows how to use the MCAN module to transmit and receive CAN FD messages in interrupt mode.
Description
This application transmits and receives CAN FD messages on the CAN bus. To run this application, two evaluation boards of same type are required. These boards acts as different nodes on the CAN bus. Same application is programmed onto both the boards. Boards are connected to PC via UART. While running the application, user can send and receive CAN FD messages between the boards using UART console applications running on the PC.
Downloading and Building the Application
To clone or download this application from Github, go to the main page of this repository and then click Clone button to clone this repository or download as zip file. This content can also be downloaded using content manager by following these instructions.
Path of the application within the repository is apps/mcan/mcan_fd_operation_interrupt_timestamp/firmware.
To build the application, refer to the following table and open the project using its IDE.
| Project Name | Description |
|---|---|
| sam_rh707_ek.X | MPLABX project for SAM RH707F18 Evaluation Kit |
Setting Up the Hardware
The following table shows the target hardware for the application projects.
| Project Name | Description |
|---|---|
| sam_rh707_ek.X | SAM RH707F18 Evaluation Kit |
Setting Up SAM RH707F18 Evaluation Kit
- Connect SAM RH707F18 Evaluation Kit to
another SAM RH707F18 Evaluation Kit as per
the pin connections shown below
SAM RH707F18 EK - 1 SAM RH707F18 EK - 2 CANH0, J19 CANH0, J19 CANL0, J19 CANL0, J19 GND, J19 GND, J19 - Connect the Debug USB port on the board to the computer using a micro USB cable
- Connect the debugger probe to J5 connector
- Connect the J1 (USB-C) port on the board to the computer using a USB-C cable
Running the Application
- Open the Terminal application (Ex.:Tera term) on the computer
- Connect to the USB to UART COM port of both the boards and configure the serial
settings as follows:
- Baud : 115200
- Data : 8 Bits
- Parity : None
- Stop : 1 Bit
- Flow Control : None
- Build and Program the application on both the boards using their respective IDEs
- In the console associated with board 1, press “0” to transmit a CAN FD message
- Transmitted message description and status will be displayed in the console window of board 1
- Received message will be displayed in the console window of board 2
- Follow the sequence below to send and receive different messages:
- Press ‘1’ on board 1
- Press ‘2’ on board 1
- Press ‘3’ on board 1
- Press ‘4’ on board 1
- Press ‘0’ on board 2
- Press ‘1’ on board 2
- Press ‘2’ on board 2
- Press ‘3’ on board 2
- Press ‘4’ on board 2
- If the steps are executed in this sequence, the final output in the consoles
will be as below:
