Laura Delaney / Mbed 2 deprecated MINILAB_DAY10

Use a touchscreen display to select which sensor measurement to display

Dependencies:   mbed DisplayModule24_demo_day10

tmp.cpp@8:a7b7edb66de5, 2017-01-17 (annotated)

Committer:
ldelaney17
Date:
Tue Jan 17 21:28:13 2017 +0000
Revision:
8:a7b7edb66de5
Parent:
7:b275c76de4ba 
final commit; cleaned up debug code; added comments; set 10s ticker period

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ldelaney17 3:4cd5469a146f 1 #include "mbed.h"
ldelaney17 3:4cd5469a146f 2 #include "tmp.h"
ldelaney17 3:4cd5469a146f 3 //reused code from miniproject day 7. Not reinventing the wheel.
ldelaney17 3:4cd5469a146f 4
ldelaney17 3:4cd5469a146f 5
ldelaney17 3:4cd5469a146f 6 //Code for Temperature Sensor
ldelaney17 3:4cd5469a146f 7 I2C * tempsensor;
ldelaney17 3:4cd5469a146f 8
ldelaney17 3:4cd5469a146f 9 void temp_init(){
ldelaney17 3:4cd5469a146f 10 tempsensor = &connection;
ldelaney17 3:4cd5469a146f 11 char config_t[3];
ldelaney17 3:4cd5469a146f 12 config_t[0]=0x01;
ldelaney17 3:4cd5469a146f 13 config_t[1]=0x60; //configures data byte 1
ldelaney17 3:4cd5469a146f 14 config_t[2] = 0xA0; //configures data byte 2
ldelaney17 3:4cd5469a146f 15 tempsensor->write(temp_addr, config_t,3);
ldelaney17 3:4cd5469a146f 16 config_t[0]=0x00;
ldelaney17 3:4cd5469a146f 17 tempsensor->write(temp_addr, config_t,1);
ldelaney17 3:4cd5469a146f 18 }
ldelaney17 3:4cd5469a146f 19 float get_temp(){
ldelaney17 7:b275c76de4ba 20 pc.printf("in call to temp\r\n");
ldelaney17 3:4cd5469a146f 21 float temp;
ldelaney17 3:4cd5469a146f 22 char temp_read[2];
ldelaney17 7:b275c76de4ba 23 wait(0.05); //shorter wait time
ldelaney17 3:4cd5469a146f 24 tempsensor->read(temp_addr, temp_read, 2);
ldelaney17 7:b275c76de4ba 25
ldelaney17 3:4cd5469a146f 26 temp = 0.0625*(((temp_read[0]<<8))+temp_read[1]>>4);//calculate and convert data
ldelaney17 3:4cd5469a146f 27 #ifdef DEBUG_MODE
ldelaney17 3:4cd5469a146f 28 pc.printf("Temp = %.2f degC\n\r", temp);
ldelaney17 3:4cd5469a146f 29 #endif
ldelaney17 3:4cd5469a146f 30 return temp;
ldelaney17 4:3d5abdf9ad0e 31 }
ldelaney17 4:3d5abdf9ad0e 32
ldelaney17 8:a7b7edb66de5 33 // gets the average of n (default 5) temperature readings
ldelaney17 4:3d5abdf9ad0e 34 float get_avg_temp(int n){
ldelaney17 4:3d5abdf9ad0e 35 if (n <= 0)
ldelaney17 4:3d5abdf9ad0e 36 return 0;
ldelaney17 4:3d5abdf9ad0e 37 float count = 0;
ldelaney17 4:3d5abdf9ad0e 38 for (int i = 0; i < n; i++){
ldelaney17 4:3d5abdf9ad0e 39 count += get_temp();
ldelaney17 4:3d5abdf9ad0e 40 }
ldelaney17 4:3d5abdf9ad0e 41 return count / n;
ldelaney17 4:3d5abdf9ad0e 42 }
ldelaney17 4:3d5abdf9ad0e 43