Ismael Omar / Mbed 2 deprecated completesensor

test

Dependencies:   TMP006_lib mbed

main.cpp@0:2f70df382411, 2015-09-28 (annotated)

Committer:
ismaelo
Date:
Mon Sep 28 09:32:33 2015 +0000
Revision:
0:2f70df382411
new

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ismaelo 0:2f70df382411 1 #include "mbed.h"
ismaelo 0:2f70df382411 2 #include "TMP006.h"
ismaelo 0:2f70df382411 3
ismaelo 0:2f70df382411 4 #define Address 0x80
ismaelo 0:2f70df382411 5
ismaelo 0:2f70df382411 6 // for dust sensor
ismaelo 0:2f70df382411 7 DigitalOut myled(LED1);
ismaelo 0:2f70df382411 8 DigitalOut ledPower(D8);
ismaelo 0:2f70df382411 9 AnalogIn analog_value(p15);
ismaelo 0:2f70df382411 10
ismaelo 0:2f70df382411 11 int samplingTime = 280;//280 microseconds
ismaelo 0:2f70df382411 12 int deltaTime = 40;//40 us to give total pulse width of 0.32ms
ismaelo 0:2f70df382411 13 int sleepTime = 9680;//LED off for 9680 us to take 1 measurement per second
ismaelo 0:2f70df382411 14
ismaelo 0:2f70df382411 15 float dustDensityCN = 0,dustDensitySharp = 0, voMeasured=0, voCalc=0;
ismaelo 0:2f70df382411 16
ismaelo 0:2f70df382411 17 // end dust sensor
ismaelo 0:2f70df382411 18
ismaelo 0:2f70df382411 19 TMP006 sensor(p9, p10, Address);
ismaelo 0:2f70df382411 20
ismaelo 0:2f70df382411 21 int main()
ismaelo 0:2f70df382411 22 {
ismaelo 0:2f70df382411 23 while(1) {
ismaelo 0:2f70df382411 24 //printf("ObjTemp: %f \r \n", sensor.readObjTempC(Address));
ismaelo 0:2f70df382411 25 //printf("RawDieTem: %f \r \n", sensor.readRawDieTemperature(Address));
ismaelo 0:2f70df382411 26 printf("DieTemp: %f \r \n", sensor.readDieTempC(Address));
ismaelo 0:2f70df382411 27
ismaelo 0:2f70df382411 28 // dust sensor stuff starts from here
ismaelo 0:2f70df382411 29 myled = !myled;
ismaelo 0:2f70df382411 30 ledPower=0; // power on the LED. Pull-down to activate
ismaelo 0:2f70df382411 31 wait_us(samplingTime);
ismaelo 0:2f70df382411 32 voMeasured = analog_value.read(); // Converts and read the analog input value
ismaelo 0:2f70df382411 33 wait_us(deltaTime);
ismaelo 0:2f70df382411 34 ledPower=1; // turn the LED off. Pull up to turn off
ismaelo 0:2f70df382411 35 wait_us(sleepTime);
ismaelo 0:2f70df382411 36
ismaelo 0:2f70df382411 37 voCalc = voMeasured*5.0;//Map 0:1 measured range to 0:3.3V
ismaelo 0:2f70df382411 38
ismaelo 0:2f70df382411 39 // Original equation taken from Sharp data sheet measured in mg/m3
ismaelo 0:2f70df382411 40 // Sharp don't give you a best fit line, so you have to guess
ismaelo 0:2f70df382411 41 dustDensitySharp = 0.5/2.8 * (float(voCalc) - 0.7);
ismaelo 0:2f70df382411 42
ismaelo 0:2f70df382411 43 // Eqaution calibrated by Chris Nafis (c) 2012
ismaelo 0:2f70df382411 44 // see http://www.howmuchsnow.com/arduino/airquality/
ismaelo 0:2f70df382411 45 // measured in parts per 0.01 cf
ismaelo 0:2f70df382411 46 // [I did not get meaningful values on my sensor with Chris' formula
ismaelo 0:2f70df382411 47 // For me the Sharp graph works just fine. So make your own tests]
ismaelo 0:2f70df382411 48 //dustDensityCN = (float(voCalc) - 0.0356)*1.2;
ismaelo 0:2f70df382411 49
ismaelo 0:2f70df382411 50 printf("Measurment value: %1.3f", voMeasured);
ismaelo 0:2f70df382411 51 printf("Voltage calculated: %1.3f", voCalc);
ismaelo 0:2f70df382411 52 printf("Dust Density [mg/m3]: %f", dustDensitySharp);
ismaelo 0:2f70df382411 53 // printf(" - C. Nafis' Dust Density [pp.01cf](x10^4): %f\n", dustDensityCN,"\n");
ismaelo 0:2f70df382411 54
ismaelo 0:2f70df382411 55 wait(1.0);
ismaelo 0:2f70df382411 56 }
ismaelo 0:2f70df382411 57 }