Fork JTMK PUO Tech Creavery
Dependencies: C12832_lcd LM75B USBDevice mbed
Fork of app-board-TempAlarm by
main.cpp
- Committer:
- 4180_1
- Date:
- 2013-09-22
- Revision:
- 4:d9371152f77a
- Parent:
- 3:4d612f16ad84
- Child:
- 5:05597fda1a26
File content as of revision 4:d9371152f77a:
#include "mbed.h" #include "LM75B.h" #include "C12832_lcd.h" C12832_LCD lcd; //Graphics LCD LM75B tmp(p28,p27); //I2C Temperature Sensor PwmOut r(p23); //RGB LED with 3 PWM outputs for dimmer control PwmOut g(p24); PwmOut b(p25); PwmOut speaker(p26); //Speaker with PWM driver AnalogIn pot1(p19); //Reads Pot 1 - near LCD AnalogIn pot2(p20); //Reads Pot 2 - near RGB LED Serial pc(USBTX,USBRX); //used for printf to PC over USB int main () { float board_temp; float alarm_temp = 0.0; // generate a 800Hz tone using PWM hardware output speaker.period(1.0/800.0); // 800hz period r=1.0; //RGB LED off - PWM 100% duty cycle g=1.0; b=1.0; while (1) { lcd.cls(); lcd.locate(0,0); //clears LCD board_temp = tmp; //read temperature lcd.printf("Board Temperature = %.2f\n\r",board_temp); alarm_temp = 50.0 * pot1; //read alarm temp lcd.printf("Temp Alarm Setting = %.2f\n\r",alarm_temp); if(board_temp > alarm_temp) { //check temp for alarm r = 1.0 - pot2; //RGB LED red g = 1.0; speaker = 0.5; //alarm tone using PWM } else { g = 1.0 - pot2; //RGB LED green r = 1.0; speaker = 0.0; } wait(1.0); pc.printf("%.2f\n\r",board_temp); //send temp to PC } }