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1、/*************************************************************18B20驱动程序，DQ为数据口，接于P2.1*11.0592M晶振，上拉4.7k电阻*Author:fyb*2005-3-2511:23，OK!*************************************************************/#include#include#defineucharunsignedchar#defineuint unsigned
2、intsbitdq=P1^7;bit flag;uintTemperature;uchartemp_buff[9];//存储读取的字节，readscratchpad为9字节，readromID为8字节ucharid_buff[8];uchar*p;ucharcrc_data;ucharcodeCrcTable[256]={0, 94,188, 226, 97, 63, 221, 131, 194, 156, 126, 32, 163, 253, 31, 65,157, 195, 33, 127, 252, 16
3、2, 64, 30, 95, 1, 227, 189, 62, 96, 130, 220,35, 125, 159, 193, 66, 28, 254, 160, 225, 191, 93, 3, 128, 222, 60, 98,190, 224, 2, 92, 223, 129, 99, 61, 124, 34, 192, 158, 29, 67, 161, 255,70, 24, 250, 164, 39, 121, 155, 197, 132,
4、218, 56, 102, 229, 187, 89, 7,219, 133,103, 57, 186, 228, 6, 88, 25, 71, 165, 251, 120, 38, 196, 154,101, 59,217, 135, 4, 90, 184, 230, 167, 249, 27, 69, 198, 152, 122, 36,248, 166,68, 26, 153, 199, 37, 123, 58, 100, 134, 216, 91, 5
5、, 231, 185,140, 210,48, 110, 237, 179, 81, 15, 78, 16, 242, 172, 47, 113, 147, 205,17, 79, 173, 243, 112, 46, 204, 146, 211, 141, 111, 49, 178, 236, 14, 80,175, 241,19, 77, 206, 144, 114, 44, 109, 51, 209, 143, 12, 82, 176, 238,50,
6、108, 142, 208, 83, 13, 239, 177, 240, 174, 76, 18, 145, 207, 45, 115,202, 148,118, 40, 171, 245, 23, 73, 8, 86, 180, 234, 105, 55, 213,139,87, 9, 235, 181, 54, 104, 138, 212, 149, 203, 41, 119, 244, 170, 72, 22,233, 183, 85, 11, 136
7、, 214, 52, 106, 43, 117, 151, 201, 74, 20, 246, 168,116, 42, 200, 150, 21, 75, 169, 247, 182, 232, 10, 84, 215, 137, 107, 53};///*************************************************************Function:延时处理*parameter:*Return:*Modify:**********************
8、***************************************/voidTempDelay(
