OneWire Library lets you access 1-wire devices made by Maxim/Dallas, such as temperature sensors
Dependents: OneWireTest mbed_blinky Affich_Lum_Moist Projetv0 ... more
#include "mbed.h" #include "OneWire.h" OneWire owBus(p21); int main() { char _id[16]; DeviceAddresses* devAddresses = owBus.getFoundDevAddresses(); uint8_t foundNum = owBus.getFoundDevNum(); printf("OneWire: found %d devices\r\n", foundNum); while(1) { OneWireDeviceTemperature::startConversationForAll(&owBus, OWTEMP_11_BIT); for (uint8_t i = 0; i < foundNum; i++) { OneWireDevice* owDevice = OneWireDeviceFactory::init(&owBus, (*devAddresses)[i]); if (owDevice->getFamily() != ONEWIRE_DS18B20_FAMILY) // currently only DS18B20 supports continue; owDevice->generateId(_id); printf("OneWire: device #%s = %.4f*C\r\n", _id, (float) owDevice->sendGetCommand(GET_TEMPERATURE)); delete owDevice; } wait(5); } }
Diff: _headers/OneWireDevice.h
- Revision:
- 3:7bd102cb73e0
- Parent:
- 2:07da4deb7135
diff -r 07da4deb7135 -r 7bd102cb73e0 _headers/OneWireDevice.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/_headers/OneWireDevice.h Tue Dec 18 12:12:21 2012 +0000 @@ -0,0 +1,44 @@ +/* Copyright (c) 2012, Ivan Kravets <me@ikravets.com>, www.ikravets.com. MIT License + * + * Permission is hereby granted, free of charge, to any person obtaining a copy of this software + * and associated documentation files (the "Software"), to deal in the Software without restriction, + * including without limitation the rights to use, copy, modify, merge, publish, distribute, + * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all copies or + * substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING + * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef ONEWIREDEVICE_H +#define ONEWIREDEVICE_H + +#include "OneWire.h" + +class OneWireDevice { +public: + OneWireDevice(OneWire* ow, DeviceAddress devAddr); + //~OneWireDevice(); + void generateId(char* id); + uint8_t getFamily(); + + virtual void sendSetCommand(OneWireDeviceCmd cmd, uint8_t data) {}; + virtual float sendGetCommand(OneWireDeviceCmd cmd) { + return 0; + }; + +protected: + OneWire* owBus; + DeviceAddress address; +}; + +#include "OneWireDeviceFactory.h" +#include "OneWireDeviceTemperature.h" + +#endif \ No newline at end of file