MCAN FD interrupt
This example application 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_a5d2_xult.X | MPLABX project for SAMA5D2 Xplained Ultra Evaluation Kit |
Setting up AT91Bootstrap loader
To load the application binary onto the target device, we need to use at91bootstrap loader. Refer to the at91bootstrap loader documentation for details on how to configure, build and run bootstrap loader project and use it to bootstrap the application binaries.
Setting up the hardware
The following table shows the target hardware for the application projects.
| Project Name | Board |
|---|---|
| sam_a5d2_xult.X | SAMA5D2 Xplained Ultra Evaluation Kit |
Setting up SAMA5D2 Xplained Ultra Evaluation Kit
Hardware required
| Name | Quantity |
|---|---|
| SAMA5D2 Xplained Ultra Evaluation Kit | 2 |
| ATA6563 click Board | 2 |
Setting up the board
- Short jumper JP2 (DEBUG_DIS)
-
Connect ATA6563 click Board to SAMA5D2 Xplained Ultra Evaluation Kits as per the Pin connections shown below
SAMA5D2 Xplained Ultra Evaluation Kits ATA6563 click Board CANTX0 (PIN8), J9 Connector RX (PIN 14) CANRX0 (PIN7), J9 Connector TX (PIN 13) 3V3 (PIN20), EXT1 Connector 3V3 (PIN 7) VDD_5V (PIN3), J24 Connector 5V (PIN 10) GND (PIN19), EXT1 Connector GND (PIN 9) - Connect ATA6563 click Board to each other using DB9 serial cable
- Short (close) jumper JP2 (DEBUG_DIS) to disable external debug communication interface (J1) for each board
- Connect the Debug USB port on the boards to the computer using micro USB cables
Running the Application
- Build the application using its IDE
- Open the Terminal application (Ex.:Tera term) on the computer.
- Connect to the EDBG/Jlink Virtual COM port and configure the serial settings as follows:
- Baud : 115200
- Data : 8 Bits
- Parity : None
- Stop : 1 Bit
- Flow Control : None
- 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 (console on the left is the transmitter (board 1) and the one on the right is receiver (board 2)):
