DAC8512输出正弦C程序.doc

#include #include #include #include #define uchar unsigned char#define uint unsigned intuchar an_jian1=0;sbit DAC8512_SCLK=P35;/时钟信号输入端sbit DAC8512_SDI=P36;/数据输入端sbit DAC8512_LD=P37; /低电平有效，数据写入串行数据寄存器sbit key1=P10;uint code sin_tab=2048,2060,2073,2086,2099,2112,2125,2138,2150,2163,2176,2189,2202,2215,2227,2240,2253,2266,2279,2291,2304,2317,2330,2342,2355,2368,2380,2393,2406,2419,2431,2444,2456,2469,2482,2494,2507,2519,2532,2544,2557,2569,2582,2594,2606,2619,2631,2643,2656,2668,2680,2692,2705,2717,2729,2741,2753,2765,2777,2789,2801,2813,2825,2837,2849,2861,2872,2884,2896,2908,2919,2931,2942,2954,2966,2977,2988,3001,3011,3023,3034,3045,3056,3068,3079,3090,3101,3112,3123,3134,3145,3155,3166,3177,3188,3198,3209,3220,3230,3241,3251,3261,3272,3282,3292,3302,3313,3323,3333,3343,3353,3363,3372,3382,3392,3402,3411,3421,3430,3440,3449,3458,3468,3478,3486,3495,3504,3513,3522,3531,3540,3549,3558,3566,3575,3583,3592,3600,3609,3617,3625,3633,3641,3649,3657,3665,3673,3681,3689,3696,3704,3711,3719,3726,3734,3741,3748,3755,3762,3769,3776,3783,3790,3797,3803,3810,3816,3823,3829,3836,3842,3848,3854,3860,3866,3872,3878,3883,3889,3895,3900,3906,3911,3916,3921,3927,3932,3937,3942,3946,3951,3956,3961,3965,3970,3974,3978,3983,3987,3991,3995,3999,4003,4006,4010,4014,4017,4021,4024,4027,4031,4034,4037,4040,4043,4046,4048,4051,4054,4056,4059,4061,4063,4066,4068,4070,4072,4074,4075,4077,4079,4080,4082,4083,4085,4086,4087,4088,4089,4090,4091,4092,4092,4093,4094,4094,4094,4095,4095,4095,4095,4095,4095,4095,4094,4094,4094,4093,4092,4092,4091,4090,4089,4088,4087,4086,4085,4083,4082,4080,4079,4077,4075,4074,4072,4070,4068,4066,4063,4061,4059,4056,4054,4051,4048,4046,4043,4040,4037,4034,4031,4027,4024,4021,4017,4014,4010,4006,4003,3999,3995,3991,3987,3983,3978,3974,3970,3965,3961,3956,3951,3946,3942,3937,3932,3927,3921,3916,3911,3906,3900,3895,3889,3883,3878,3872,3866,3860,3854,3848,3842,3836,3829,3823,3816,3810,3803,3797,3790,3783,3776,3769,3762,3755,3748,3741,3734,3726,3719,3711,3704,3696,3689,3681,3673,3665,3657,3649,3641,3633,3625,3617,3609,3600,3592,3583,3575,3566,3558,3549,3540,3531,3522,3513,3504,3495,3486,3478,3468,3458,3449,3440,3430,3421,3411,3402,3392,3382,3372,3363,3353,3343,3333,3323,3313,3302,3292,3282,3272,3261,3251,3241,3230,3220,3209,3198,3188,3177,3166,3155,3145,3134,3123,3112,3101,3090,3079,3068,3056,3045,3034,3023,3011,3001,2988,2977,2966,2954,2942,2931,2919,2908,2896,2884,2872,2861,2849,2837,2825,2813,2801,2789,2777,2765,2753,2741,2729,2717,2705,2692,2680,2668,2656,2643,2631,2619,2606,2594,2582,2569,2557,2544,2532,2519,2507,2494,2482,2469,2456,2444,2431,2419,2406,2393,2380,2368,2355,2342,2330,2317,2304,2291,2279,2266,2253,2240,2227,2215,2202,2189,2176,2163,2150,2138,2125,2112,2099,2086,2073,2060,2048,2035,2022,2009,1996,1983,1970,1957,1945,1932,1919,1906,1893,1880,1868,1855,1842,1829,1816,1804,1791,1778,1765,1753,1740,1727,1715,1702,1689,1676,1664,1651,1639,1626,1613,1601,1588,1576,1563,1551,1538,1526,1513,1501,1489,1476,1464,1452,1439,1427,1415,1403,1390,1378,1366,1354,1342,1330,1318,1306,1294,1282,1270,1258,1246,1234,1223,1211,1199,1187,1176,1164,1153,1141,1129,1118,1107,1094,1084,1072,1061,1050,1039,1027,1016,1005, 994, 983, 972, 961, 950, 940, 929, 918, 907, 897, 886, 875, 865, 854, 844,834, 823, 813,803, 793, 782, 772, 762, 752, 742, 732,723, 713, 703, 693, 684, 674, 665, 655,646, 637, 627, 617, 609, 600,591, 582, 573, 564, 555, 546, 537, 529, 520, 512, 503,495, 486, 478, 470, 462, 454, 446, 438,430, 422, 414, 406, 399, 391,384, 376, 369,361, 354, 347, 340, 333, 326, 319, 312,305, 298, 292, 285, 279, 272, 266, 259,253, 247, 241, 235, 229, 223,217, 212, 206,200, 195, 189, 184, 179, 174, 168, 163,158, 153, 149, 144, 139, 134, 130, 125,121, 117, 112, 108, 104, 100,96, 92, 89, 85, 81, 78,74, 71, 68, 64, 61, 58, 55, 52,49, 47, 44, 41, 39, 36, 34, 32,29, 27, 25,23, 21, 20, 18, 16, 15,13, 12, 10, 9, 8, 7, 6, 5, 4, 3, 3,2, 1, 1, 1, 0, 0, 0, 0,0,0, 0, 1, 1, 1, 2, 3, 3,4, 5, 6, 7, 8, 9, 10, 12, 13, 15, 16, 18, 20, 21, 23, 25,27, 29, 32, 34, 36, 39,41, 44, 47, 49, 52, 55, 58, 61,64, 68, 71, 74, 78, 81, 85, 89,92, 96, 100,104, 108, 112,117, 121, 125, 130, 134, 139, 144, 149,153, 158, 163, 168, 174, 179, 184, 189,195, 200, 206, 212, 217, 223,229, 235, 241,247, 253, 259, 266, 272, 279, 285, 292,298, 305, 312, 319, 326, 333, 340, 347,354, 361, 369, 376, 384, 391,399, 406, 414,422, 430, 438, 446, 454, 462, 470, 478,486, 495, 503, 512, 520, 529, 537, 546,555, 564, 573, 582, 591, 600,609, 617, 627,637, 646, 655, 665, 674, 684, 693, 703,713, 723, 732, 742, 752, 762, 772, 782,793, 803, 813, 823, 834, 844,854, 865, 875,886, 897, 907, 918, 929, 940, 950, 961,972, 983, 994,1005,1016,1027,1039,1050,1061,1072,1084,1094,1107,1118,1129,1141,1153,1164,1176,1187,1199,1211,1223,1234,1246,1258,1270,1282,1294,1306,1318,1330,1342,1354,1366,1378,1390,1403,1415,1427,1439,1452,1464,1476,1489,1501,1513,1526,1538,1551,1563,1576,1588,1601,1613,1626,1639,1651,1664,1676,1689,1702,1715,1727,1740,1753,1765,1778,1791,1804,1816,1829,1842,1855,1868,1880,1893,1906,1919,1932,1945,1957,1970,1983,1996,2009,2022,2035, ;void delay_us() _nop_(); _nop_(); _nop_(); _nop_();void delay_ms(uint xms) uint i,j; for(i=0;ixms;i+) for(j=0;j110;j+);void DAC8512_init() /DAC8512_CS=0; DAC8512_LD=0; delay_ms(100); /DAC8512_CLR=1;void display0() uint a,y,i; for(i=0;i59;i+) y=sin_tabi*17; y=y4; DAC8512_LD=1; for(a=0;a12;a+) DAC8512_SDI=(bit)(y&0x8000);/最低位先写入8512DAC8512_SCLK=0;DAC8512_SCLK=1;y=y1;_nop_(); DAC8512_LD=0; void display1() uint a,y,i; for(i=0;i50;i+) y=sin_tabi*20; y=y4; DAC8512_LD=1; for(a=0;a12;a+) DAC8512_SDI=(bit)(y&0x8000);/最低位先写入8512DAC8512_SCLK=0;DAC8512_SCLK=1;y=y1; DAC8512_LD=0; delay_us(); /*/* 检测功能按键 *