1˵

	/* ̹ */
        òʾNVICȼ


2ʹû

	/* Ӳ̶ӦĿӲƽ̨ */
        壺N32L40XML-STBV1.0


3ʹ˵
	
	/* ģ÷:ʱӣI/O */
        SystemClock64MHz

        USARTTX - PB4115200
	EXITPA0Ϊģʽⲿж - EXIT_LINE0ⲿжϣȼΪ0
	SysTickжȼΪ0

	/* DemoĲԲ */
        1.سλУ
        2.´ӡSysTickжϢⲿжϺSysTickжͬʱʱ޸SysTickжȼΪ2ӡϢ


4ע


1. Function description
	/* A brief description of the engineering function */
	This routine configures and demonstrates NVIC priority Settings

2. Use environment
	/* Hardware environment: the corresponding development hardware platform */
	Development board: N32L40XML-STBV1.0
        
3. Instructions for use    
	/* Describe the related module configuration method; For example: clock, I/O, etc. */
	SystemClock: 64 MHZ
	USART: TX-PB4, baud rate 115200
	EXIT: PA0 is floating input mode, external interrupt line -exit_line0, external interrupt is enabled, and the priority is 0
	SysTick: Set the interrupt priority to 0

	/* Describes the test steps and symptoms of Demo */
	1. Reset and run the downloaded program after compilation;
	2. In normal cases, SysTick interrupt information is displayed. If both the external interrupt and SysTick interrupt are triggered at the same time, change the SysTick interrupt priority to 2 and print related information.

4. Matters needing attention