Library for the TI TMP102 I2C temperature sensor.
Dependents: TextLCD_HelloWorld MMEx_Challenge PCF2119_16X2_LCD_test TMP102_Serial_Logger ... more
Diff: TMP102.cpp
- Revision:
- 0:d93532a1d699
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/TMP102.cpp Fri Jul 23 10:20:43 2010 +0000 @@ -0,0 +1,54 @@ + +/* +Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com) + +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. +*/ + +#include "TMP102.h" + +#define TEMP_REG_ADDR 0x00 + +TMP102::TMP102(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr) +{ + +} + +TMP102::~TMP102() +{ + +} + +float TMP102::read() +{ + I2C temperatureIn(p9, p10); + + const char tempRegAddr = TEMP_REG_ADDR; + + m_i2c.write(m_addr, &tempRegAddr, 1); //Pointer to the temperature register + + char reg[2] = {0,0}; + m_i2c.read(m_addr, reg, 2); //Rea + + unsigned short res = (reg[0] << 4) | (reg[1] >> 4); + + float temp = (float) ((float)res * 0.0625); + + return temp; +}