Basic example

#include"mbed.h"#include"DS248X.h"DS248XoneWire(I2C_SDA, I2C_SCL);intmain() {if (!oneWire.init()) {debug("Init failed\n");return0;    }debug("At least one device on the bus: %u\n", oneWire.reset());return0;}

Example searching the bus

#include"DS248X.h"#include"mbed.h"DS248XoneWire(I2C_SDA, I2C_SCL);booloneWireInit() {if (!oneWire.init()) {debug("Init failed\n");returnfalse;    }if (!oneWire.setConfig(DS248X::ActivePullUp)) {debug("Config failed\n");returnfalse;    }returntrue;}voidoneWireCb(char error) {if (error & DS248X_CB_RESET_CONDITION) {debug("1-Wire reset\n");    }elseif (error & DS248X_CB_SHORT_CONDITION) {debug("1-Wire short\n");    }elseif (error & DS248X_CB_DEVICE_RESET_NEEDED) {debug("Device reset needed\n");        oneWire.deviceReset();oneWireInit();    }}intmain() {char rom[8];uint8_t device_count =0;    oneWire.attach(oneWireCb);if (!oneWireInit()) {return0;    }while (1) {while (oneWire.search(rom)) {            device_count++;debug("Found device:");for (size_t i =0; i <sizeof(rom); i++) {debug("%02X", rom[i]);            }debug("\n");        }        oneWire.resetSearch();debug("Total devices on the bus: %u\n\n", device_count);        device_count =0;ThisThread::sleep_for(5s);    }}

Example reading DS18B20 and passing I2C object

#include"DS248X.h"#include"mbed.h"I2Ci2c(I2C_SDA, I2C_SCL);DS248X oneWire;intmain() {char rom[8];char data[9];if (!oneWire.init(&i2c)) {debug("Init failed\n");return0;    }if (!oneWire.setConfig(DS248X::ActivePullUp)) {debug("Config failed\n");return0;    }while (1) {if (!oneWire.search(rom)) {debug("No devices on the bus\n");ThisThread::sleep_for(1s);continue;        }        oneWire.resetSearch();if (rom[0] !=0x10 && rom[0] !=0x28) {// DS18S20 or DS18B20debug("Not a temperature sensor\n");continue;        }debug("Temperature sensor found\n");while (1) {if (!oneWire.reset()) {debug("Sensor is no longer on the bus\n");break;            }            oneWire.select(rom);// start conversion            data[0] =0x44;            oneWire.writeBytes(data,1,true);// use SPU if in parasitic mode// wait for conversionThisThread::sleep_for(750ms);// default conversion (12bit) time is 750ms            oneWire.reset();            oneWire.select(rom);// Read Scratchpad            data[0] =0xBE;            oneWire.writeBytes(data,1,true);// use SPU if in parasitic mode            oneWire.readBytes(data,9,true);// use SPU if in parasitic modeif (!oneWire.crc8(data,9)) {debug("Invalid CRC\n");continue;            }int16_t raw = (data[1] <<8) | data[0];for (auto i =0; i <9; i++) {printf("%02X", data[i]);            }printf("\n");switch (rom[0]) {case0x10: {// DS18S20                    raw = raw <<3;if (data[7] ==0x10) {                        raw = (raw &0xFFF0) +12 - data[6];                    }                }break;case0x28: {// DS18B20char cfg = (data[4] &0x60);// default is 12 bit resolution// 750ms conversion timeif (cfg ==0x00) {// 9 bit resolution, 93.75 ms                        raw &= ~7;                    }elseif (cfg ==0x20) {// 10 bit res, 187.5 ms                        raw &= ~3;                    }elseif (cfg ==0x40) {// 11 bit res, 375 ms                        raw &= ~1;                    }                }default:break;            }printf("Temperature: %i *mC\n", ((int32_t)raw *100) >>4);        }    }}