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Dependencies: C12832_lcd LM75B mbed
Fork of Ex6-1 by
main.cpp@1:418351419da7, 2015-11-13 (annotated)
- Committer:
- nikmzakmal
- Date:
- Fri Nov 13 02:52:43 2015 +0000
- Revision:
- 1:418351419da7
- Parent:
- 0:79f59d830953
hhh
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ahmadafif | 0:79f59d830953 | 1 | #include "mbed.h" |
ahmadafif | 0:79f59d830953 | 2 | #include "LM75B.h" |
ahmadafif | 0:79f59d830953 | 3 | #include "C12832_lcd.h" |
ahmadafif | 0:79f59d830953 | 4 | |
ahmadafif | 0:79f59d830953 | 5 | C12832_LCD lcd; //Graphics LCD |
ahmadafif | 0:79f59d830953 | 6 | LM75B tmp(p28,p27); //I2C Temperature Sensor |
ahmadafif | 0:79f59d830953 | 7 | PwmOut r(p23); //RGB LED with 3 PWM outputs for dimmer control |
ahmadafif | 0:79f59d830953 | 8 | PwmOut g(p24); |
ahmadafif | 0:79f59d830953 | 9 | PwmOut b(p25); |
ahmadafif | 0:79f59d830953 | 10 | PwmOut speaker(p26); //Speaker with PWM driver |
ahmadafif | 0:79f59d830953 | 11 | AnalogIn pot1(p19); //Reads Pot 1 - near LCD |
ahmadafif | 0:79f59d830953 | 12 | AnalogIn pot2(p20); //Reads Pot 2 - near RGB LED |
ahmadafif | 0:79f59d830953 | 13 | Serial pc(USBTX,USBRX); //used for printf to PC over USB |
ahmadafif | 0:79f59d830953 | 14 | |
ahmadafif | 0:79f59d830953 | 15 | int main () |
ahmadafif | 0:79f59d830953 | 16 | { |
ahmadafif | 0:79f59d830953 | 17 | float board_temp; |
ahmadafif | 0:79f59d830953 | 18 | float alarm_temp = 0.0; |
ahmadafif | 0:79f59d830953 | 19 | // generate a 800Hz tone using PWM hardware output |
ahmadafif | 0:79f59d830953 | 20 | speaker.period(1.0/800.0); // 800hz period |
ahmadafif | 0:79f59d830953 | 21 | r=1.0; //RGB LED off - PWM 100% duty cycle |
ahmadafif | 0:79f59d830953 | 22 | g=1.0; |
ahmadafif | 0:79f59d830953 | 23 | b=1.0; |
ahmadafif | 0:79f59d830953 | 24 | |
ahmadafif | 0:79f59d830953 | 25 | while (1) { |
ahmadafif | 0:79f59d830953 | 26 | lcd.cls(); |
ahmadafif | 0:79f59d830953 | 27 | lcd.locate(0,0); //clears LCD |
ahmadafif | 0:79f59d830953 | 28 | board_temp = tmp; //read temperature |
ahmadafif | 0:79f59d830953 | 29 | lcd.printf("Board Temperature = %.2f\n\r",board_temp); |
ahmadafif | 0:79f59d830953 | 30 | alarm_temp = 50.0 * pot1; //read alarm temp |
ahmadafif | 0:79f59d830953 | 31 | lcd.printf("Temp Alarm Setting = %.2f\n\r",alarm_temp); |
ahmadafif | 0:79f59d830953 | 32 | if(board_temp > alarm_temp) { //check temp for alarm |
ahmadafif | 0:79f59d830953 | 33 | r = 1.0 - pot2; //RGB LED red |
ahmadafif | 0:79f59d830953 | 34 | g = 1.0; |
ahmadafif | 0:79f59d830953 | 35 | speaker = 0.5; //alarm tone using PWM |
ahmadafif | 0:79f59d830953 | 36 | } else { |
ahmadafif | 0:79f59d830953 | 37 | g = 1.0 - pot2; //RGB LED green |
ahmadafif | 0:79f59d830953 | 38 | r = 1.0; |
ahmadafif | 0:79f59d830953 | 39 | speaker = 0.0; |
ahmadafif | 0:79f59d830953 | 40 | } |
ahmadafif | 0:79f59d830953 | 41 | wait(1.0); |
ahmadafif | 0:79f59d830953 | 42 | pc.printf("%.2f\n\r",board_temp); //send temp to PC |
ahmadafif | 0:79f59d830953 | 43 | } |
ahmadafif | 0:79f59d830953 | 44 | } |