/*!
    \file    readme.txt
    \brief   description of the communication_among_Devices demo

    \version 2026-03-04, V1.0.0, firmware for GD32M53x
*/

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*/

  This demo is based on the GD32M531R-EVAL-V1.2 board, it shows how to configure the CAN
peripheral to send and receive CAN frames in normal mode. The frames are sent and print
transmit data by pressing Wakeup Key. When the frames are received, the receive data
will be printed and the LED2 will toggle. A frame with extended frame ID: 0xaabb and DLC
of 8 is required.

  If the print function is needed, make sure that there are no jumper caps connected
to JP1 and JP12. Then connect PF10 to pin 1 of JP18 and PF9 to pin 3 of JP18 using DuPont
wire. Meanwhile, modify the definition of the EVAL_COM macro in the gd32m53x_eval.h file to
EVAL_COM1. Connect CN3 to the PC.

  To ensure the power supply of the CAN transceiver, the development board must be powered
by CN2(GD-Link), and the SW1 needs to be ON state.

  JP19 must be connected.

  This example is tested with at least two GD32M531R-EVAL-V1.2 boards. The same program
example is loaded in all boards. User must connect L pin to L pin and H pin to H pin of
JP20 on the two boards for sending and receiving frames.
  JP18 needs to be connected.
