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                                样例使用说明
                             Sample Description
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功能描述：
该样例演示了CCT计数器溢出触发DMA传输功能，复位串口打印传输前的数据，等待DMA触发后，
打印传输后的数据，LED1每隔1s翻转一次。

Function descriptions:
This example demonstrates the CCT counter overflow triggering DMA transmission 
function, resetting the serial port to print data before transmission, and 
waiting for DMA to trigger,Print the transmitted data, LED1 flips every 1 second.
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测试环境：
测试用板：DPM32M087RBTx_EVB V1.0
MDK版本： 5.28

Test environment:
Test board: DPM32M087RBTx_EVB V1.0
MDK Version: 5.28
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使用步骤：
1. 接上P10上的跳线帽，将串口接到USB。
2. 编译下载程序到MCU，并运行。
3. 串口输出日志。
4. 可观察到开发板上的LED1每隔1s翻转一次。

Example execution steps:
1. Connect the jumper cap on P10 and connect the serial port to USB.
2. Compile and download the program to MCU, and run it.
3. Serial port output logs.
4. It can be observed that LED1 on the development board flips every 1 second.
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注意事项：
LED引脚如下：
LED引脚如下：
LED1       -> PC10

UART引脚如下：
UART_Tx    -> PA9
UART_Rx    -> PA10

Notes:
The LED pins are as follows:
LED1       -> PC10

The UART pins are as follows:
UART_Tx    -> PA9
UART_Rx    -> PA10
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