1、功能说明

    该测例演示了LPUARTx与USARTy间通过查询检测标识实现的基础通信。
    首先，LPUARTx发送TxBuffer1数据至USARTy，USARTy接收数据存至RxBuffer1。
比较接收数据与发送数据，比较结果存入TransferStatus变量。
    随后，USARTy发送TxBuffer2数据至LPUARTx，LPUARTx接收数据存至RxBuffer2。
比较接收数据与发送数据，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
    
    LPUART配置如下：
    - 波特率 = 115200baud
    - 字长 = 8数据位（固定）
    - 1停止位（固定）
    - 校验控制禁用
    - 硬件流控制使能（RTS和CTS信号）
    - 接收器和发送器使能
    
    USART配置如下：
    - 波特率 = 115200baud
    - 字长 = 8数据位
    - 1停止位
    - 校验控制禁用
    - 硬件流控制使能（RTS和CTS信号）
    - 接收器和发送器使能
    
    LPUART及USART引脚连接如下：
    - LPUART_Tx.PB6   <------->   USART3_Rx.PD9
    - LPUART_Rx.PB7   <------->   USART3_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 the basic communication between LPUARTx and USARTy by querying the detection flag.
    First, LPUARTx sends TxBuffer1 data to USARTy ，and USARTy receives data and stores it in RxBuffer1.
    Compare the received data with the sent data, and store the comparison result into the TransferStatus variable.
    Then, USARTy sends TxBuffer2 data to LPUARTx， and LPUARTx receives data and stores it in RxBuffer2.
    Compare the received data with the sent data, and store the comparison result into the TransferStatus 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 LPUART configuration is as follows:
    - Baud rate = 115200baud
    - Word length = 8 data bits (fixed)
    - 1 stop bit (fixed)
    - checksum control disabled
    - Hardware flow control enable (RTS and CTS signals)
    - Receiver and transmitter enable
    
    USART is configured as follows:
    - Baud rate = 115200baud
    - Word length = 8 data bits
    - 1 stop bit
    - checksum control disabled
    - Hardware flow control enable (RTS and CTS signals)
    - Receiver and transmitter enable
    
    The LPUART and USART pins are connected as follows:
    - LPUART_Tx.PB6   <------->   USART3_Rx.PD9
    - LPUART_Rx.PB7   <------->   USART3_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