wenkong_junshi/Examples/CAN/communication_among_CANs

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

\version 2017-02-10, V1.0.0, firmware for GD32F30x
\version 2018-10-10, V1.1.0, firmware for GD32F30x
\version 2018-12-25, V2.0.0, firmware for GD32F30x
\version 2020-09-30, V2.1.0, firmware for GD32F30x
*/

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*/

This demo is based on the GD32307C-EVAL-V1.1 board, it shows how to configure the
CAN0 and CAN1 peripherals to send and receive CAN frames in normal mode. Pressing
Wakeup key or Tamper key:

When Tamper key is pressed, CAN0 sends a message to CAN1 and print it.when CAN1
receives correctly this message,the receive data will be printed by COM0 and LED5
toggles one time.

When Wakeup key is pressed, CAN1 sends a message to CAN0 and print it. When CAN0
receives correctly this message,the receive data will be printed by COM0 and LED4 toggles
one time.

User can select one from the preconfigured CAN baud rates from the private
defines in main.c. These baudrates is correct only when the system clock frequency
is 120M.

P2,P3 and P4 must be fitted.
Connect JP14 CAN_L to JP15 CAN_L
Connect JP14 CAN_H to JP15 CAN_H