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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(PB12)输入捕获功能，PB12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(PB12), PB12 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：PY32T090_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: PY32T090_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. PB12引脚不输入时钟信号的情况下，LED不翻转
3. PB12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 PB12 pin does not input the clock signal
3. PB12 input clock signal, TIM1 capture success, LED will toggle
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注意事项：
通过USB转TTL模块连接PC与STK板,STK板与USB转TTL模块的连线方式如下；
@PrintfConfigStart
STK板        USB转TTL模块
PB9(TX)   -->  RX
PB8(RX)   -->  TX
GND       -->  GND
UART配置为波特率115200，数据位8，停止位1，校验位None
@PrintfConfigEnd

Notes:
Connect the PC to the STK board through the USB to TTL module, and the connection
method between the STK board and the USB to TTL module is as follows:
@PrintfConfigStart
STK board USB to TTL module
PB9(TX)   -->  RX
PB8(RX)   -->  TX
GND       -->  GND
UART is configured as BaudRate 115200, data bit 8, stop bit 1, and parity None.
@PrintfConfigEnd
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