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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RTC的闹钟中断功能，在数组aShowTime中显示当前时间，在数组aShowDate中
显示当前日期，当达到闹钟值时，LED灯会亮起。

Function descriptions:
This sample demonstrates the alarm interrupt function of the RTC. It displays 
the current time in the aShowTime array and the current date in the aShowDate 
array. When the alarm value is reached, the LED will light up.
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测试环境：
测试用板：PY32F040E_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: PY32F040E_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. 编译并下载程序到MCU；
2. 程序运行后，大概30s，LED灯亮起。

Example execution steps:
1. Compile and download the program to the MCU.
2. After the program is running, the LED will light up after approximately 30 
seconds.
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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
PA02(TX)  -->  RX
PA03(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
PA02(TX)  -->  RX
PA03(RX)  -->  TX
GND       -->  GND
UART is configured as BaudRate 115200, data bit 8, stop bit 1, and parity None.
@PrintfConfigEnd
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