1˵
    1WWDGλܡ


2ʹû

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


3ʹ˵

    ϵͳã
        1WWDGʱԴPCLK1 32MHz
        2ֵ48.128ms < n < 65.536ms
        3ָʾƣPB0(LED1)   PC12(LED2)
             
    Բ
        1KEIL±¼壬ϵָʾLED2ͣ˸˵ֵˢС
        2SysTick_Delay_Ms(57)ĳС48ߴ65ʱϵͳһֱڸλ״̬LED1


4ע
    1ֵСʱϵͳƵĸλ״̬ʱ޷ءڿWWDGǰ1ʱ󡣵ȻҲԲʱֱӽBOOT0߼ء 



1. Function description

    WWDG reset function.
    

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

    System Configuration:
       1. IWDG clock source: PCLK1 32MHz
       2. Window value: 48.128ms < n < 65.536ms
       3. light Indicator: PB0(LED1)   PC12(LED2)

    Test steps and phenomenon
       1. Compile and download the code to reset and run, the indicator LED2 keeps flashing.
          It means that the window value is refreshed normally and the code is running normally.
       2. When the parameter of the SysTick_Delay_Ms() function is changed from 57 to less than 48 or greater than 65, 
          the entire system will always be in the reset state. LED1 is on.

4. Matters needing attention
    1. When the window value is very small, the system is in a frequent reset state, and at this time, it is easy to 
       cause the program to fail to download normally. In this routine, 1s delay is added before WWDG is 
       turned on to avoid this phenomenon. Of course, without delay, you can directly pull up the BOOT0 pin to download normally.