8seg.c

来自「s3c4510的一个任务例子源代码」· C语言 代码 · 共 81 行

/**************************************************
*FILENAME:8SEG.C
*
*
*
*
***************************************************/



#define SEGMENT_A		0x01		// Bitmaps for 7-segment
#define SEGMENT_B		0x02
#define SEGMENT_C		0x04
#define SEGMENT_D		0x08
#define SEGMENT_DP		0x10
#define SEGMENT_E		0x20
#define SEGMENT_F		0x40
#define SEGMENT_G		0x80

#define SYS_BASE		0x03ff0000
#define SRAM_BASE		0x03fe0000
#define IO_BASE			0x03600000
#define IO_BANK0		(*(volatile unsigned int *)(IO_BASE + 0x0000))
#define IO_BANK1		(*(volatile unsigned int *)(IO_BASE + 0x4000))
#define IO_BANK2		(IO_BASE + 0x8000)
#define IO_BANK3		(IO_BASE + 0xc000)
#define NONCACHEABLE_BASE	0x04000000

/*
#define DIGIT_F	((SEGMENT_A | SEGMENT_B | SEGMENT_C | SEGMENT_D | SEGMENT_E | SEGMENT_F) << 24)
#define DIGIT_E	((SEGMENT_B | SEGMENT_C) << 24)
#define DIGIT_D	((SEGMENT_A | SEGMENT_B | SEGMENT_G | SEGMENT_E | SEGMENT_D) << 24)
#define DIGIT_C	((SEGMENT_A | SEGMENT_B | SEGMENT_C | SEGMENT_D | SEGMENT_G) << 24)
#define DIGIT_B	((SEGMENT_F | SEGMENT_G | SEGMENT_B | SEGMENT_C) << 24)
#define DIGIT_A	((SEGMENT_A | SEGMENT_F | SEGMENT_G | SEGMENT_C | SEGMENT_D) << 24)
#define DIGIT_9	((SEGMENT_A | SEGMENT_F | SEGMENT_E | SEGMENT_D | SEGMENT_C | SEGMENT_G) << 24)
#define DIGIT_8	((SEGMENT_A | SEGMENT_B | SEGMENT_C) << 24)
#define DIGIT_7	((SEGMENT_A | SEGMENT_B | SEGMENT_C | SEGMENT_D | SEGMENT_E | SEGMENT_F | SEGMENT_G) << 24)
#define DIGIT_6	((SEGMENT_G | SEGMENT_F | SEGMENT_A | SEGMENT_B | SEGMENT_C) << 24)
#define DIGIT_5	((SEGMENT_E | SEGMENT_F | SEGMENT_A | SEGMENT_B | SEGMENT_C | SEGMENT_G) << 24)
#define DIGIT_4	((SEGMENT_F | SEGMENT_E | SEGMENT_D | SEGMENT_C | SEGMENT_G) << 24)
#define DIGIT_3	((SEGMENT_A | SEGMENT_F | SEGMENT_E | SEGMENT_D) << 24)
#define DIGIT_2	((SEGMENT_B | SEGMENT_C | SEGMENT_D | SEGMENT_E | SEGMENT_G) << 24)
#define DIGIT_1	((SEGMENT_A | SEGMENT_F | SEGMENT_E | SEGMENT_D | SEGMENT_G) << 24)
#define DIGIT_0	((SEGMENT_A | SEGMENT_F | SEGMENT_E | SEGMENT_G) << 24)
*/

#define DIGIT_F	((SEGMENT_B | SEGMENT_C | SEGMENT_D | SEGMENT_DP)<<24)
#define DIGIT_E	((SEGMENT_B | SEGMENT_C | SEGMENT_DP) <<24)
#define DIGIT_D	((SEGMENT_A | SEGMENT_F | SEGMENT_DP)<<24)
#define DIGIT_C	((SEGMENT_B | SEGMENT_C | SEGMENT_G | SEGMENT_DP)<<24)
#define DIGIT_B	((SEGMENT_A | SEGMENT_B | SEGMENT_DP) <<24)
#define DIGIT_A	((SEGMENT_D | SEGMENT_DP) << 24)
#define DIGIT_9	((SEGMENT_E | SEGMENT_DP) <<24)
#define DIGIT_8	((SEGMENT_DP) <<24)
#define DIGIT_7	((SEGMENT_D | SEGMENT_E | SEGMENT_F | SEGMENT_G | SEGMENT_DP) <<24)
#define DIGIT_6	((SEGMENT_B | SEGMENT_DP) <<24)
#define DIGIT_5	((SEGMENT_E | SEGMENT_B | SEGMENT_DP) <<24)
#define DIGIT_4	((SEGMENT_A | SEGMENT_E | SEGMENT_D | SEGMENT_DP) <<24)
#define DIGIT_3	((SEGMENT_F | SEGMENT_E | SEGMENT_DP)<<24)
#define DIGIT_2	((SEGMENT_C | SEGMENT_F | SEGMENT_DP) <<24)
#define DIGIT_1	((SEGMENT_A | SEGMENT_F | SEGMENT_E | SEGMENT_D | SEGMENT_G | SEGMENT_DP) <<24)
#define DIGIT_0	((SEGMENT_G | SEGMENT_DP)<<24 )

void Set8Led(int n)
{
	unsigned int ctrl [] = 
			  { DIGIT_0, DIGIT_1, DIGIT_2, DIGIT_3, DIGIT_4, DIGIT_5, DIGIT_6, DIGIT_7,
			    DIGIT_8, DIGIT_9, DIGIT_A, DIGIT_B, DIGIT_C, DIGIT_D, DIGIT_E, DIGIT_F };
			    
	if( (0<=n) && (n<(sizeof(ctrl)/sizeof(unsigned char))) )
	{
//		IO_BANK0 = ~ctrl[n];	
		IO_BANK0 = ctrl[n];	
	}

//		IO_BANK0 = ctrl[0];	

}