1˵
    1ͨEXTIӡ

2ʹû

    KEIL MDK-ARM V5.25
    Ӳ
        1N32L43XML-STB V1.0
        2MCUN32L436MBL7

3ʹ˵
    
    ϵͳ:
        1RTCʱԴLSE
        2жߣEXTI_LINE7
        3ã
                            - ΪUSART1TXPA9  RXPA10:
                            - λ8
                            - ֹͣλ1
                            - żУ飺
                            - ʣ 115200 
    ʹ÷
        ¼壬PC13ӵPA7ڣϵ󣬴ÿ1SӡһζӦʱ

4ע
    


1. Function description

	1. Trigger calendar printout through EXTI line.

2. Use environment

	Software development environment: KEIL MDK-ARM V5.25
	Hardware environment:
		1. based on the evaluation board N32L43XML-STB V1.0 development
		2. MCU: N32L436MBL7

3. Instructions for use

	System configuration:

		1. RTC clock source: LSE
		2. EXTI line: EXTI_LINE7
		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 compilation, it is burned to the evaluation board. PC13 is connected to PA7 port. After power-on, the serial port prints the corresponding calendar time every 1S

4. Matters needing attention
	None