1˵
    ͨEXTIʱ



2ʹû

    /* ǰʹõƼ汾 */
    IDEߣKEIL MDK-ARM 5.21.1.0
      
    /* Ӳ̶ӦĿӲƽ̨ */
    壺N32G031C8L7-STB V1.0     



3ʹ˵

    ϵͳã
        1ʱԴLSI
        2EXTIPB7
        3ã
                    - ΪUSART1TXPA9  RXPA10:
                    - λ8
                    - ֹͣλ1
                    - żУ飺
                    - ʣ 115200 


    ʹ÷
    1KEIL±¼壬ϵ󣬸PB7ߵƽڴӡʱ
                
                

4ע
    


1. Function description
    The timestamp is triggered by EXTI.



2. Use environment

    /* Software development environment: the name and version number of the software tool used in the current project */
    IDE tool: KEIL MDK-ARM 5.21.1.0
      
    /* Hardware environment: the development hardware platform corresponding to the project */
    Development board: N32G031C8L7-STB V1.0



3. Instructions for use

    System Configuration;
        1. Clock source: LSI
        2. EXTI: PB7
        3. Serial port configuration:
                    - Serial port is USART1 (TX: PA9 RX: PA10):
                    - Data bits: 8
                    - Stop bit: 1
                    - Parity: none
                    - Baud rate: 115200


    Instructions:
    1. After compiling under KEIL, burn it to the evaluation board. After power-on, pour a high level into PB7, and the serial port will print out the timestamp.
                
                

4. Matters needing attention
    none