/*!
 * @file        readme.txt
 *
 * @brief       This file is routine instruction
 *
 * @version     V1.0.0
 *
 * @date        2022-05-25
 *
 * @attention
 *
 *  Copyright (C) 2021-2022 Geehy Semiconductor
 *
 *  You may not use this file except in compliance with the
 *  GEEHY COPYRIGHT NOTICE (GEEHY SOFTWARE PACKAGE LICENSE).
 *
 *  The program is only for reference, which is distributed in the hope
 *  that it will be usefull and instructional for customers to develop
 *  their software. Unless required by applicable law or agreed to in
 *  writing, the program is distributed on an "AS IS" BASIS, WITHOUT
 *  ANY WARRANTY OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the GEEHY SOFTWARE PACKAGE LICENSE for the governing permissions
 *  and limitations under the License.
 */

&par Example Description

This example describes how to config a communication the CAN in loopback mode.
CAN transmit a message to self. Then compare the received message with transmitted
message. The data of Polling transmit and Interrupt transmit will displayed on serial assistant
through USART1.

  - Polling transmit success: The LED2 turns,printf"CAN1 polling test is PASSED",
                              otherwise LED2 turns off,printf"CAN1 polling test is FAILED".
  - Interrupt transmit success: The LED3 turns,printf"CAN1 interrupt test is PASSED",
                                 otherwise LED3 turns off,printf"CAN1 interrupt test is FAILED".

The USART1 is configured as follows:
    - TX:PA9, RX:PA10
    - BaudRate = 115200 baud
    - Word Length = 8 Bits
    - One Stop Bit
    - No parity
    - Hardware flow control disabled (RTS and CTS signals)
    - Receive and transmit enabled

&par Directory contents

  - CAN/LoopBack/Source/apm32f4xx_int.c           Interrupt handlers
  - CAN/LoopBack/Source/main.c                    Main program

&par IDE environment

  - MDK-ARM V5.29
  - EWARM V8.50.4.26131

&par Hardware and Software environment

  - This example runs on APM32F407_EVAL Devices.
