![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
Temperature Sensor Project, ammended from cookbook
Dependencies: mbed C12832 LM75B
Revision 6:3a4fb916a217, committed 2020-08-26
- Comitter:
- saltire78
- Date:
- Wed Aug 26 22:39:41 2020 +0000
- Parent:
- 5:608f2bf4d3f7
- Commit message:
- Temperature Sensor Project, ammended from cookbook recipe
Changed in this revision
main.cpp | Show annotated file Show diff for this revision Revisions of this file |
diff -r 608f2bf4d3f7 -r 3a4fb916a217 main.cpp --- a/main.cpp Thu Feb 06 14:05:51 2014 +0000 +++ b/main.cpp Wed Aug 26 22:39:41 2020 +0000 @@ -6,23 +6,90 @@ LM75B sensor(p28,p27); Serial pc(USBTX,USBRX); +DigitalIn JoyLeft(p13); +DigitalIn JoyRight(p16); +DigitalIn JoyButton(p14); +DigitalOut AlarmLED(LED1); -int main () -{ - +int main (){ + lcd.cls(); //clear LCD screen + lcd.locate(0,0); //home the lcd screen + lcd.printf("Killian's LM75 Temperature Sensor Detection"); //Text + wait(2); //pause for visibility + int tempselect=0; //set temp selection as undetermined + + while (tempselect==0){ //while temp selection undetermined + lcd.cls(); //clear LCD screen + lcd.locate(0,0); //home the lcd screen + lcd.printf("Deg. C = Joystick <\nDeg. F = Joystick >\nBoth = Joystick Button"); + if(JoyLeft==1 and JoyRight==0 and JoyButton==0){ + lcd.cls(); //clear LCD screen + lcd.locate(0,0); //home the lcd screen + lcd.printf("Deg. C Selected\nPlease Wait..."); //selection text + tempselect=1; //ammend selection constant - breaks while loop + wait(1); //pause for visibility and debounce + } + else if(JoyLeft==0 and JoyRight==1 and JoyButton==0){ + lcd.cls(); //clear LCD screen + lcd.locate(0,0); //home the lcd screen + lcd.printf("Deg. F Selected\nPlease Wait..."); //selection text + tempselect=2; //ammend selection constant - breaks while loop + wait(1); //pause for visibility and debounce + } + else if(JoyLeft==0 and JoyRight==0 and JoyButton==1){ + lcd.cls(); //clear LCD screen + lcd.locate(0,0); //home the lcd screen + lcd.printf("Deg. C and Deg. F Selected\nPlease Wait..."); //selection text + tempselect=3; //ammend selection constant - breaks while loop + wait(1); //pause for visibility and debounce + } + } + //Try to open the LM75B if (sensor.open()) { printf("Device detected!\n"); while (1) { - lcd.cls(); - lcd.locate(0,3); - lcd.printf("Temp = %.3f\n", (float)sensor); - wait(1.0); - } + /* setting temperature range as between 0C and 30C, or 32F to 86F, using y=mx+c. + for Celsius tempC=30sensor+0 + for Fahrenheit tempF=54sensor+32 */ + float tempC=30*(float)sensor; //creating Celsius selection value + float tempF=54*(float)sensor+32; //creating Fahrenheit selection value + + if(tempselect==1){ //if deg. C selected + lcd.cls(); //clear LCD screen + lcd.locate(0,0); //home LCD screen + lcd.printf("Temp = %.1f Deg. C\n", tempC); //print temp info + wait(1.0); //pause for visibility + } + else if(tempselect==2){ //if deg. F selected + lcd.cls(); //clear LCD screen + lcd.locate(0,0); //home LCD screen + lcd.printf("Temp = %.1f Deg. F\n", tempF); //print temp info + wait(1.0); //pause for visibility + } + else if(tempselect==3){ //if both temps selected + lcd.cls(); //clear LCD screen + lcd.locate(0,0); //home LCD screen + lcd.printf("Temp = %.1f Deg. C\nTemp = %.1f Deg. F", tempC, tempF); //print both temp infos + wait(1.0); //pause for visibility + } + + if(tempC>=27.0){ //High temp alarm set for 27 degrees C or over + lcd.cls(); //clear LCD screen + lcd.locate(0,0); //home LCD screen + lcd.printf("Warning - Temperature High Alarm!"); //display alarm text + AlarmLED=1; //toggle on alarm LED + wait(1); //pause while LED lit + AlarmLED=0; //clear the alarm LED + } + + } // end of while loop + + } // the end of if statment + + else { + error("Device not detected!\n"); + } - } else { - error("Device not detected!\n"); - } - -} +} // end of main