Kristof T'Jonck / Mbed 2 deprecated Project2

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Dependencies:   C12832 EthernetInterface LM75B mbed-rtos mbed

Fork of app-board-LM75B by Chris Styles

TemperatureSensor.cpp@6:77a4c45f6416, 2017-03-23 (annotated)

Committer:
gimohd
Date:
Thu Mar 23 12:51:27 2017 +0000
Revision:
6:77a4c45f6416
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gimohd 6:77a4c45f6416 1 #include "TemperatureSensor.h"
gimohd 6:77a4c45f6416 2 #include "LM75B.h"
gimohd 6:77a4c45f6416 3 #include <mbed.h>
gimohd 6:77a4c45f6416 4 #include <string>
gimohd 6:77a4c45f6416 5
gimohd 6:77a4c45f6416 6
gimohd 6:77a4c45f6416 7 TemperatureSensor::TemperatureSensor(PinName sca, PinName scl)
gimohd 6:77a4c45f6416 8 :LM75B(sca,scl)
gimohd 6:77a4c45f6416 9 {
gimohd 6:77a4c45f6416 10 this->sca = sca;
gimohd 6:77a4c45f6416 11 this->scl = scl;
gimohd 6:77a4c45f6416 12 }
gimohd 6:77a4c45f6416 13
gimohd 6:77a4c45f6416 14 int16_t TemperatureSensor::temp_short(void)
gimohd 6:77a4c45f6416 15 {
gimohd 6:77a4c45f6416 16 //Signed return value
gimohd 6:77a4c45f6416 17 int16_t value;
gimohd 6:77a4c45f6416 18
gimohd 6:77a4c45f6416 19 //Read the 11-bit raw temperature value
gimohd 6:77a4c45f6416 20 value = this->read16(0x00) >> 5;
gimohd 6:77a4c45f6416 21
gimohd 6:77a4c45f6416 22 //Sign extend negative numbers
gimohd 6:77a4c45f6416 23 if (value & (1 << 10))
gimohd 6:77a4c45f6416 24 value |= 0xFC00;
gimohd 6:77a4c45f6416 25
gimohd 6:77a4c45f6416 26 //Return the temperature in °C
gimohd 6:77a4c45f6416 27 return value;
gimohd 6:77a4c45f6416 28 }
gimohd 6:77a4c45f6416 29
gimohd 6:77a4c45f6416 30 float TemperatureSensor::shortToFloat(int16_t value)
gimohd 6:77a4c45f6416 31 {
gimohd 6:77a4c45f6416 32 return value*0.125;
gimohd 6:77a4c45f6416 33 }
gimohd 6:77a4c45f6416 34
gimohd 6:77a4c45f6416 35 float TemperatureSensor::average(std::vector<int16_t> TMP)
gimohd 6:77a4c45f6416 36 {
gimohd 6:77a4c45f6416 37 printf("test \r\n");
gimohd 6:77a4c45f6416 38 float sum = 0;
gimohd 6:77a4c45f6416 39 for( int i = 0; i < TMP.size(); i++ ) {
gimohd 6:77a4c45f6416 40 float data = TemperatureSensor::shortToFloat(TMP.at(i));
gimohd 6:77a4c45f6416 41 sum +=data;
gimohd 6:77a4c45f6416 42 }
gimohd 6:77a4c45f6416 43 printf("Temperature average %f \r\n",(float) sum /TMP.size());
gimohd 6:77a4c45f6416 44 return ((float)sum) /TMP.size();
gimohd 6:77a4c45f6416 45 }