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); } }
OneWireDeviceTemperature.h
- Committer:
- ivank
- Date:
- 2012-12-18
- Revision:
- 2:07da4deb7135
File content as of revision 2:07da4deb7135:
#ifndef ONEWIREDEVTEMP_H #define ONEWIREDEVTEMP_H #include "OneWireDevice.h" class OneWireDeviceTemperature : public OneWireDevice { public: OneWireDeviceTemperature(OneWire* ow, DeviceAddress address) : OneWireDevice(ow, address) {}; //static setResolutionForAll static void startConversationForAll(OneWire* owBus, uint8_t resolution); }; #include "devices/ds18b20.h" #endif