/*!
 * @file        readme.txt
 *
 * @brief       This file is routine instruction
 *
 * @version     V1.0.0
 *
 * @date        2023-01-11
 *
 * @attention
 *
 *  Copyright (C) 2018-2023 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

Example code demonstrating variance calculation of input sequence.

The demo can be displayed using serial assistant.
After power on, can press KEY1 to start demo test.

&par Hardware Description

USART1_TX(PA9) ----> host_RX
USART1_RX(PA10)----> host_TX

  - USART1 configured as follow:
  - BaudRate = 115200
  - Word Length = USART_WordLength_8b
  - Stop Bit = USART_StopBits_1
  - Parity = USART_Parity_No
  - Hardware flow control disabled (RTS and CTS signals)
  - Receive and transmit enabled

&par Directory contents

  - DSP/DSP_variance/Source/apm32a4xx_int.c                Interrupt handlers
  - DSP/DSP_variance/Source/main.c                         Main program
  - DSP/DSP_variance/Source/arm_variance_example_f32.c     Example code demonstrating variance calculation of input sequence
  - Boards/Board_APM32A407_MINI/src/bsp_usart.c            Usart board support package body
  - Boards/Board_APM32A407_MINI/src/bsp_delay.c            Delay board support package body
  - Boards/Board_APM32A407_MINI/src/bsp_key.c              Key board support package body

&par IDE environment

  - MDK-ARM V5.29.0.0
  - EWARM V8.50.5.26295
  - Eclipse V2022-06(4.24.0)

&par Hardware and Software environment

  - This example runs on APM32A407 MINI Devices.
