/**
  ******************************************************************************
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *
  * Copyright (C) 2021 Shanghai Eastsoft Microelectronics Co., Ltd. ALL rights reserved.
  *******************************************************************************
  */

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Version history:
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2024-10-30	V1.0.0	AE TEAM

<--------------------------------------------------------------------------------
Demo introduction:
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本示例功能：UART_Boot_app，通过UART通信，跳转回Bootloader。

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测试环境:
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测试板；
ES-PDS-ES32M0502LQ-T1

辅助软件：
UART-BOOT上位机软件

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测试步骤：
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1) 编译工程，编译通过后将程序下载到目标芯片；
2) 打开上位机软件UART-BOOT，选择芯片型号 ES32M0502；
3) 点击引导程序到bootloader

<--------------------------------------------------------------------------------
注意：
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1) 测试环境需要共GND。
2) 用户在开发自家的应用程序时，不用特别指定 ROM 地址，Start Address设为0即可，设定如下: 开启Keil -> Options for target -> Target -> IROM1 : Start Address设定为0x3000，因为此demo code会自动将程序烧入于用户指定位置。
3) Keil -> Options for target -> Debug: Use:CMSIS-DAP Debugger-> Flash Download修改下载地址start:0x3000  size:0x1D000

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System clock:
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PLL 72MHz.

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Pin connection:
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UART_TX:	PB07(UART1_TX - Output pin)
UART_RX:	PB08(UART1_RX - Input pin)
DEBUG_UART_TX:	PC01(UART2_TX - Output pin)
DEBUG_UART_RX:	PC00(UART2_RX - Input pin)
LED_1:	PA05(GPIO - Output pin)
LED_2:	PA06(GPIO - Output pin)
LED_3:	PA07(GPIO - Output pin)
LED_4:	PB11(GPIO - Output pin)

