gp06.c

来自「采用DM642的GPIO管脚 对发光二极管经行周期供电」· C语言 代码 · 共 19 行

void main()
{    
   	long i;
	 long a=0x00000040;
	*((unsigned int *)0x1b00000)=0x00000040;
     *((unsigned int *)0x1b00004)=0x00000040; 
do 
{
	*((unsigned int *)0x1b00008)=a;

    for(i=0;i<10000000;)
		i++;
		
    a=~a;

}

while(1);
}