1˵

    òʾUSARTyUSARTzͨDMAѯʵֵĻͨš
    ȣDMATxBuffer1USARTyݼĴݷ
USARTzUSARTzݣDMAUSARTzݼĴRxBuffer2
ȽաݣȽϽTransferStatus2
    ͬʱDMATxBuffer2USARTzݼĴݷ
USARTyUSARTyݣDMAUARTyݼĴRxBuffer1
ȽաݣȽϽTransferStatus1 


2ʹû

    KEIL MDK-ARM V5.34.0.0
    Ӳ 
        N32G05xϵУ
            N32G05xRBQ7_STB V1.0
        N32G05xϵУ
            N32G05xRBL7_STB V1.0


3ʹ˵
	
    ϵͳʱ£
    - ϵͳʱ = 64MHz
    
    UART£
    -  = 115200 baud
    - ֳ = 8λ
    - 1ֹͣλ
    - Уƽ
    - ͷʹ
    
    UART£    
    - UART1_Tx.PA2   <------->   UART2_Rx.PA7
    - UART1_Rx.PA3   <------->   UART2_Tx.PA6

    
    Բ
    - DemoKEIL±MCU
    - λУβ鿴TransferStatus1TransferStatus2У
      PASSEDΪͨFAILEDΪ쳣


4ע

    ȽNS-LINKMCU_TXMCU_RXñϿ

1. Function description

     This test example demonstrates basic communication between USARTy and USARTz through DMA. 
     First, the DMA transfers the TxBuffer1 data to the USARTy transmit data register, and then the data is sent to the 
     USARTz. USARTz uses the interrupt to receive data and store it in RxBuffer2. 
     At the same time, the DMA transfers the TxBuffer2 data to the USARTz transmit data register, and then the data is 
     sent to the USARTy. USARTy receives data by querying the check flag and stores it in RxBuffer1. 
     Finally, the two groups of receiving and sending data are compared respectively, and the comparison results are 
     stored in the TransferStatus1 variable and the TransferStatus2 variable. 

2. Use environment

	Software development environment: KEIL MDK-ARM V5.34.0.0
    Hardware development environment:
         N32G05x series:
            Developed based on the evaluation board N32G05xRBQ7_STB V1.0
         N32G05x series:
            Developed based on the evaluation board N32G05xRBL7_STB V1.0

3. Instructions for use

    The system clock configuration is as follows:
    -System clock = 64MHz
    
    The UART configuration is as follows:
    -Baud rate = 115200 baud
    -Word length = 8 data bits
    -1 stop bit
    -Verification control disabled
    -Receiver and transmitter enable
    
    The UART pin connections are as follows:
    - UART1_Tx.PA2   <------->   UART2_Rx.PA7
    - UART1_Rx.PA3   <------->   UART2_Tx.PA6

    
    Test steps and phenomena:
    -After the Demo is compiled in the KEIL environment, download it to the MCU
    -Reset operation, check the variables TransferStatus1 and TransferStatus2 in turn, among them,
      PASSED means the test passed, FAILED means the test is abnormal


4. Matters needing attention

    the MCU_TX and MCU_RX jumper cap of the development board NS-LINK needs to be disconnected first