1˵
    1ͨEXTIʱ

2ʹû

    KEIL MDK-ARM V5.25
    Ӳ
        1N32L40XRL-STB V1.0
        2MCUN32L406RBL7

3ʹ˵
    
    ϵͳ:
        1ʱԴLSI
        2EXTIжIOPB8
        3ã
                    - ΪUSART1TXPA9  RXPA10:
                    - λ8
                    - ֹͣλ1
                    - żУ飺
                    - ʣ 115200 
    ʹ÷
        ¼壬PC13ӵPB8ϵ󣬴ÿ1Sӡʱ

4ע
    


1. Function description

	1. The timestamp is triggered by the EXTI line.

2. Use environment

	Software development environment: KEIL MDK-ARM V5.25
	Hardware environment:
		1. based on the evaluation board N32L40XRL-STB V1.0 development
		2. MCU: N32L406RBL7

3. Instructions for use

	System configuration:

		1. Clock source: LSI
		2. EXTI interrupt IO: PB8
		3. Serial port configuration:

							- Serial port: USART1 (TX: PA9 RX: PA10) :
							- Data bit: 8
							- Stop bit: 1
							- Parity check: None
							- Baud rate: 115200

	Instructions:
		After compiling, it is burned to the evaluation board. After connecting PC13 to PB8, the serial port will print timestamp output every 1S after power-on.

4. Matters needing attention
	None