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                                样例使用说明
                                Sample Description
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功能描述：
此样例演示了在TIM1(PA8)输入捕获功能，PA8输入时钟信号，TIM1捕获成功后，会进入
捕获中断，每进一次中断，翻转一次LED

Function descriptions:
This sample demonstrates the input capture function of TIM1(PA8), PA8 input 
clock signal, when TIM1 capture success, will enter the capture interrupt,and
toggle the LED in the interrupt
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测试环境：
测试用板：PY32F040_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: PY32F040_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. 下载并运行程序
2. PA8引脚不输入时钟信号的情况下，LED不翻转
3. PA8输入时钟信号，TIM1捕获成功后，LED会翻转

Example execution steps:
1. compile and download the program to MCU and run it;
2. The LED does not toggle when the PA8 pin does not input the clock signal
3. PA8 input clock signal, TIM1 capture success, LED will toggle
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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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