1、功能说明

    该测例演示了LPUARTx与USARTy间通过DMA实现的基础通信。
    首先，DMA传输TxBuffer1数据至LPUARTx发送数据寄存器，随后数据发送至
USARTy。DMA将USARTy接收的数据存至RxBuffer1。比较收、发数据，比较
结果存入TransferStatus变量。

2、使用环境
 
    软件开发环境：KEIL MDK-ARM V5.34
    		  IAR EWARM 8.50.1
    芯片支持：
          N32H760 系列
          N32H762 系列
          N32H765 系列  
          N32H785 系列	
          N32H787 系列

3、使用说明
	
        1、时钟源：HSI+PLL
        2、系统时钟频率：
              600MHz	
    
    LPUARTx配置如下：
    - 波特率 = 115200 baud
    - 字长 = 8数据位（固定）
    - 1停止位（固定）
    - 校验控制禁用
    - 硬件流控制禁用（RTS和CTS信号）
    - 接收器和发送器使能
    
    USARTy配置如下：
    - 波特率 = 115200 baud
    - 字长 = 8数据位
    - 1停止位
    - 校验控制禁用
    - 硬件流控制禁用（RTS和CTS信号）
    - 接收器和发送器使能
    
    LPUARTx及USARTy引脚连接如下：
    - LPUARTx_Tx.PB6   <------->   USARTy_Rx.PD9
    - LPUARTx_Rx.PB7  <------->   USARTy_Tx.PD8
  
    
    测试步骤与现象：
    - Demo在KEIL环境下编译后，下载至MCU
    - 复位运行,串口打印PASSED为测试通过，FAILED为测试异常。

4、注意事项
    无

1. Function description

    This test example demonstrates basic communication between LPUARTx and USARTy via DMA. 
 First, the DMA transfers the TxBuffer1 data to the LPUARTx transmit data register, and then the data is sent to
USARTy. DMA stores the data received by USARTy into RxBuffer1. Compare incoming and outgoing data, compare
The result is stored in the TransferStatus1 variable.

2. Development environment

    Software development environment:KEIL MDK-ARM V5.34
    		                     IAR EWARM 8.50.1
    Supported chips:
          N32H760 series
          N32H762 series
          N32H765 series    
          N32H785 series	
          N32H787 series

3. How to use

    System Configuration:
        1. Clock source: HSI+PLL
        2. System Clock frequency: 
              600MHz
    
    The LPUARTx configuration is as follows:
    - Baud rate = 115200 baud
    - Word length = 8 data bits (fixed)
    - 1 stop bit (fixed)
    - checksum control disabled
    - Hardware flow control disabled (RTS and CTS signals)
    - Receiver and transmitter enable
    
    USARTy is configured as follows:
    - Baud rate = 115200 baud
    - Word length = 8 data bits
    - 1 stop bit
    - checksum control disabled
    - Hardware flow control disabled (RTS and CTS signals)
    - Receiver and transmitter enable
    
    The LPUARTx and USARTy pins are connected as follows:
    - LPUARTx_Tx.PB6   <------->   USARTy_Rx.PD9
    - LPUARTx_Rx.PB7  <------->   USARTy_Tx.PD8
    
    Test steps and phenomena:
    - Demo is compiled in KEIL environment and downloaded to MCU
    - Reset operation, the serial port prints PASSED to indicate that the test has passed, and FAILED to indicate that the test is abnormal.

4. Attention
    None
