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                                样例使用说明
                             Sample Description
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功能描述：
此样例演示了COMP比较器的window功能，比较器2的Plus端用比较器1的IO3(PA1)作为输入，
VREFINT作为比较器负端输入，当PA1的电压值大于1.3V时，LED灯亮，小于1.1V时，LED灯
灭。

Function descriptions:
This sample demonstrates the window function of the COMP comparator. The 
positive input of comparator 2 is connected to the IO3 (PA1) of comparator 1, 
and VREFINT is used as the negative input of the comparator. When the voltage 
on PA1 is greater than 1.3V, the LED turns on. When the voltage is less 
than 1.1V, the LED turns off.
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测试环境：
测试用板：PY32F003_STK
MDK版本： 5.28
IAR版本： 9.20
GCC版本： GNU Arm Embedded Toolchain 10.3-2021.10

Test environment:
Test board: PY32F003_STK
MDK Version: 5.28
IAR Version: 9.20
GCC Version: GNU Arm Embedded Toolchain 10.3-2021.10
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使用步骤：
1. 编译下载程序到MCU，并运行；
2. PA01输入小于1.1V电压，LED灯灭；
3. PA01输入大于1.3V电压，LED灯亮。

Example execution steps:
1.Compile and download the program to the MCU, and run it.
2.Input a voltage greater than 1.3V on PA01, the LED turns on.
3.Input a voltage less than 1.1V on PA01, the LED turns off.
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注意事项：
如果需要使用按键:
StartKit版本为V2.0以下,需将StartKit.h中的StartKitVersion 2 注释掉，并打开
StartKitVersion 1
StartKit版本为V2.0及以上版本,则无需操作

Notes:
If you need to use buttons:
StartKit version is below V2.0, you need to comment StartKitVersion 2 in
StartKit.h, and open StartKitVersion 1 
StartKit version is V2.0 and above, no operation is required

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