Diff: TMP112.cpp

Revision:

0:2fbb524f0609

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TMP112.cpp	Thu May 12 21:49:05 2016 +0000
@@ -0,0 +1,119 @@
+/*
+Copyright (c) 2016 Camilo Ruiz 
+ 
+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.
+*/
+
+//this should work with tmp102 too
+//I do not use negative values on my application, this code has to be tweaked to support it
+//I do not use extended mode, this code has to be tweaked to support it
+
+//greetings from Colombia :)
+
+#include "TMP112.h"
+
+#define TEMP_REG_ADDR 0x00
+
+TMP112::TMP112(PinName sda, PinName scl, int addr) : m_i2c(sda, scl), m_addr(addr)
+{
+    extended_mode=0; //default, extended mode off
+}
+
+TMP112::~TMP112()
+{
+}
+
+
+/** TMP112 read one of the three available temperature registers
+ *  return in celsius 
+ */
+float TMP112::readTmpReg(char reg)
+{
+    m_i2c.write(m_addr, &reg, 1); //Pointer to the temperature register
+    char data[2] = {0,0};
+    m_i2c.read(m_addr, data, 2); //Read
+    int16_t res  = ((int8_t)data[0] << 4) | ((uint8_t)data[1] >> 4);  
+    float temp =  (float) ((float)res * 0.0625);
+    return temp;
+}
+
+/** TMP112 get the actual temperature of the sensor 
+ */
+float TMP112::readTemperature()
+{
+    return readTmpReg(0);
+}
+
+/** TMP112 read the hi temp of the thermostat stored in the sensor
+ */
+float TMP112::readTM_Htemp()
+{
+    return readTmpReg(3);
+}
+
+/** TMP112 read the low temp of the thermostat stored in the sensor
+ */
+float TMP112::readTM_Ltemp()
+{
+    return readTmpReg(2);
+}
+
+/** TMP112 read the cfg register
+ */
+uint16_t TMP112::readCFG()
+{
+    char reg=1;
+    m_i2c.write(m_addr, &reg, 1); //Pointer to the cfg register
+    char data[2] = {0,0};
+    m_i2c.read(m_addr, data, 2); //Read
+    return (data[0] << 8) | data[1];
+}
+
+/** TMP112 write the cfg register
+ */
+void TMP112::writeCFG(uint16_t cfg)
+{
+    //char reg=1;
+    //m_i2c.write(m_addr, &reg, 1); //Pointer to the cfg register
+    char data[3];
+    data[0]=1;      //Pointer to the cfg register
+    data[1]=cfg>>8;
+    data[2]=cfg & 0xFF;
+    m_i2c.write(m_addr, data, 3); //write
+}
+/** TMP112 write a threshold temp o thermostat into the sensor
+ */
+void TMP112::writeTmpReg(char reg, float temp){
+    uint16_t regValue= (uint16_t) (temp/0.0625);
+    char data[3];
+    data[0]=reg;      //Pointer to the cfg register
+    data[1]=(regValue>>4)& 0xFF;
+    data[2]=(regValue << 4) & 0xFF;
+    m_i2c.write(m_addr, data, 3); //write
+}
+
+//write thermostat temperatures high
+    void TMP112::write_TM_Htemp(float temp){
+        writeTmpReg(3,temp);
+        }
+//write thermostat temperatures low        
+    void TMP112::write_TM_Ltemp(float temp){
+        writeTmpReg(2,temp);
+        }
+    
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