/**
  ******************************************************************************
  * 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) Shanghai Eastsoft Microelectronics Co., Ltd. ALL rights reserved.
  *******************************************************************************
  */

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Version history:
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2019-07-17	V1.0.0	AE TEAM


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Demo introduction:
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UART-XModem Bootloader App demo
UART-Xmodem Bootloader的App编写演示程序

该程序编译后会在MDK-ARM目录生成一个.bin文件，通过ES32_SDK\Utilities\Add_CheckSum下的AddCheckSum小工具添加校验后，
即可通过终端传输给bootloader程序写入到flash

注意：该程序配置中Target页中设置的ROM地址，需要与UART_XMODE_BOOT程序中boot_flash.h文内"APP_FLASH_S"和"APP_FLASH_E"指定的范围一致

测试功能：
该程序运行后会通过串口输出"App running"，并闪烁LED1

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System clock:
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External HOSC[12MHz] divided by 3, then PLL to 72MHz.

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Pin connection: 
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UART0_TX ---- PB10[GPIO_FUNC_3]
UART0_RX ---- PB11[GPIO_FUNC_3]

Note: UART0 for debug[baudrate->115200]