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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ADC的模拟看门狗功能，当开启模拟看门狗通道的电压值超过上下限时，会进
入看门狗中断。

Function descriptions:
This example demonstrates the analog watchdog function of ADC. When the voltage
value of the analog watchdog channel exceeds the upper and lower limits, it will
enter the watchdog 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. 编译并下载程序
2. 通道10(PD0)的电压值小于1.65V，LED灯不会被点亮
3. 通道10(PD0)的电压值大于1.65V，LED灯被点亮。

Example execution steps:
1. Compile and download the program and run it
2. the voltage value of channel 10 (PD0) is lower than 1.65V, the LED off
3. the voltage value of channel 10 (PD0) is higher than 1.65V, the LED on
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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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