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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TIM3输入捕获功能，捕获数据通过DMA传输到变量CC1_Capture中，并通过
串口打印输出。

Function descriptions:
This sample demonstrates the input capture feature in TIM3. The captured data 
is transferred to the variable CC1_Capture using DMA and printed through the UART.

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测试环境：
测试用板：PY32M030_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: PY32M030_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. 开始打印数据，未在PA6输入时钟信号，则打印输出的结果为0；
3. 在PA6输入时钟信号后，打印数据会根据捕获值进行输出。

Example execution steps:
1.Download and run the program.
2.Start printing the data. If there is no clock signal on PA6, the printed 
output will be 0.
3.When a clock signal is input on PA6, the printed data will be output based 
on the captured value.
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注意事项：
STK板        USB转TTL模块
PA02(TX) --> RX
PA03(RX) --> TX
GND      --> GND
波特率:115200

Notes:
STK board USB to TTL module
PA02(TX) --> RX
PA03(RX) --> TX
GND --> GND
Baud Rate: 115200bps
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