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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， ， ，
捕获中断， ，
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：
MDK版本：
IAR版本：
GCC版本：
Test environment:
Test board: PY32F403_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，
3. PA8输入时钟信号， ，
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：
Notes:
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