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Add ::request(uint64_t &addr) to request from a single device #29

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Add ::request(uint64_t &addr) to request from a single device #29

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11 changes: 11 additions & 0 deletions OneWireESP32.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -250,6 +250,17 @@ void OneWire32::request(){
}
}

void OneWire32::request(uint64_t &addr){
if(drv && reset()){
write(0x55);
uint8_t *a = (uint8_t *)&addr;
for(uint8_t i = 0; i < 8; i++){
write(a[i]);
}
write(0x44);
}
}

const uint8_t crc_table[] = {0, 94, 188, 226, 97, 63, 221, 131, 194, 156, 126, 32, 163, 253, 31, 65, 157, 195, 33, 127, 252, 162, 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, 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, 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, 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, 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};

uint8_t OneWire32::getTemp(uint64_t &addr, float &temp){
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1 change: 1 addition & 0 deletions OneWireESP32.h
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@ class OneWire32 {
~OneWire32();
bool reset();
void request();
void request(uint64_t &addr);
uint8_t getTemp(uint64_t &addr, float &temp);
uint8_t search(uint64_t *addresses, uint8_t total);
bool read(uint8_t &data, uint8_t len = 8);
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