/*!
 * @file        readme.txt
 *
 * @brief       This file is routine instruction
 *
 * @version     V1.0.0
 *
 * @date        2026-01-31
 *
 * @attention
 *
 *  Copyright (C) 2026 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 useful 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 shows that how to use the EWDT_out signal and interrupt of EWDT.
After reset, the EWDT and SysTick will be enable, the EWDT is
refreshed every 250 milliseconds, LED_BLUE keeps toggle. When press KEY,
system will stop refresh EWDT, and then EWDT time out, LED_RED On and
EWDT_out signal output low-level signal by PE4.
The information will export to upper computer by LPUART1.

&par Hardware Description

EWDT_Out signal output pin: PE4
KEY1: PC12
KEY2: PC13
LPUART1 is configured as follows:
    - TX:PC7, RX:PC6
    - BaudRate = 115200 baud
    - Word Length = 8 Bits
    - One Stop Bit
    - No parity
    - Hardware flow control disabled (RTS and CTS signals)
    - Transmit enabled

&par Directory contents

&par IDE environment

  - MDK-ARM V5.36.0.0
  - EWARM V8.50.5.26295
  - Eclipse V2022-06(4.24.0)

&par Hardware and Software environment

  - This example runs on APM32F445 EVAL Devices.
