ex.c

利用单片机以及DA0832产生正弦波的C51源程序

#include "reg52.h"
#include "absacc.h"

#define DA0832 XBYTE[0X6000]



sbit	P3_5=P3^5;

unsigned char code SINE_DATA[]={128, 130, 132, 135, 137, 139, 141, 144, 146, 148,
            	 				150, 152, 155, 157, 159, 161, 163, 165, 168, 170,
								172, 174, 176, 178, 180, 182, 184, 186, 188, 190,
								192, 194, 196, 198, 200, 201, 203, 205, 207, 209,
								210, 212, 214, 215, 217, 219, 220, 222, 223, 225,
								226, 227, 229, 230, 232, 233, 234, 235, 237, 238,
								239, 240, 241, 242, 243, 244, 245, 246, 247, 247,
								248, 249, 250, 250, 251, 252, 252, 253, 253, 254,
								254, 254, 255, 255, 255, 255, 255, 255, 255, 255,
								255, 255, 255, 255, 255, 255, 255, 255, 255, 254,
								254, 254, 253, 253, 252, 252, 251, 250, 250, 249,
								248, 247, 247, 246, 245, 244, 243, 242, 241, 240,
								239, 238, 237, 235, 234, 233, 232, 230, 229, 227,
								226, 225, 223, 222, 220, 219, 217, 215, 214, 212,
								210, 209, 207, 205, 203, 201, 200, 198, 196, 194,
								192, 190, 188, 186, 184, 182, 180, 178, 176, 174,
								172, 170, 168, 165, 163, 161, 159, 157, 155, 152,
								150, 148, 146, 144, 141, 139, 137, 135, 132, 130,
								128, 126, 124, 121, 119, 117, 115, 112, 110, 108,
								106, 104, 101, 99, 97, 95, 93, 91, 88, 86,
								84, 82, 80, 78, 76, 74, 72, 70, 68, 66,
								64, 62, 60, 58, 56, 55, 53, 51, 49, 47,
								46, 44, 42, 41, 39, 37, 36, 34, 33, 31,
								30, 29, 27, 26, 24, 23, 22, 21, 19, 18,
								17, 16, 15, 14, 13, 12, 11, 10, 9, 9,
								8, 7, 6, 6, 5, 4, 4, 3, 3, 2,
								2, 2, 1, 1, 1, 0, 0, 0, 0, 0,
								0, 0, 0, 0, 0, 0, 1, 1, 1, 2,
								2, 2, 3, 3, 4, 4, 5, 6, 6, 7,
								8, 9, 9, 10, 11, 12, 13, 14, 15, 16,
								17, 18, 19, 21, 22, 23, 24, 26, 27, 29,
								30, 31, 33, 34, 36, 37, 39, 41, 42, 44,
								46, 47, 49, 51, 53, 55, 56, 58, 60, 62,
								64, 66, 68, 70, 72, 74, 76, 78, 80, 82,
								84, 86, 88, 91, 93, 95, 97, 99, 101, 104,
								106, 108, 110, 112, 115, 117, 119, 121, 124, 126,
								128};

unsigned char dat=0xff;

main()
{
unsigned char i;
unsigned int ii;
	while(1)
	{
		for(ii=0;ii<361;ii++)
		{
			i=10;
			DA0832=SINE_DATA[ii];
			while(i--);
		}
	}
}