main.c

是MAX7219的驱动程序

#define H 0xc
#define E 0xb
#define L 0xd
#define P 0xe
#define U 0x3e
#define A 0x77
#define BLANK 0xf

void main()
{
	unsigned int *feeddog,i;
	unsigned int test=0;
	feeddog=0x7012;
	ini_7219('a',1,2,4,10);
	while(1)
	{
		*feeddog=1;	
		show_number(test,3);
		test++;
	}
}