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); } }
OneWireDevice.h@2:07da4deb7135, 2012-12-18 (annotated)
- Committer:
- ivank
- Date:
- Tue Dec 18 11:40:28 2012 +0000
- Revision:
- 2:07da4deb7135
- splited library to seprated files; - fixed bug with GET_TEMPERATURE & IRQ(interrupts) under RTOS
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ivank | 2:07da4deb7135 | 1 | #ifndef ONEWIREDEVICE_H |
ivank | 2:07da4deb7135 | 2 | #define ONEWIREDEVICE_H |
ivank | 2:07da4deb7135 | 3 | |
ivank | 2:07da4deb7135 | 4 | #include "OneWire.h" |
ivank | 2:07da4deb7135 | 5 | |
ivank | 2:07da4deb7135 | 6 | class OneWireDevice { |
ivank | 2:07da4deb7135 | 7 | public: |
ivank | 2:07da4deb7135 | 8 | OneWireDevice(OneWire* ow, DeviceAddress devAddr); |
ivank | 2:07da4deb7135 | 9 | //~OneWireDevice(); |
ivank | 2:07da4deb7135 | 10 | void generateId(char* id); |
ivank | 2:07da4deb7135 | 11 | uint8_t getFamily(); |
ivank | 2:07da4deb7135 | 12 | |
ivank | 2:07da4deb7135 | 13 | virtual void sendSetCommand(OneWireDeviceCmd cmd, uint8_t data) {}; |
ivank | 2:07da4deb7135 | 14 | virtual float sendGetCommand(OneWireDeviceCmd cmd) { |
ivank | 2:07da4deb7135 | 15 | return 0; |
ivank | 2:07da4deb7135 | 16 | }; |
ivank | 2:07da4deb7135 | 17 | |
ivank | 2:07da4deb7135 | 18 | protected: |
ivank | 2:07da4deb7135 | 19 | OneWire* owBus; |
ivank | 2:07da4deb7135 | 20 | DeviceAddress address; |
ivank | 2:07da4deb7135 | 21 | }; |
ivank | 2:07da4deb7135 | 22 | |
ivank | 2:07da4deb7135 | 23 | #include "OneWireDeviceFactory.h" |
ivank | 2:07da4deb7135 | 24 | #include "OneWireDeviceTemperature.h" |
ivank | 2:07da4deb7135 | 25 | |
ivank | 2:07da4deb7135 | 26 | #endif |