kamlesh kandel
This program is about using a temperature sensor and displaying the temperature on the LCD screen. Not only that when the temperature drops below 25, but the heater is also turned on and the temperature rising above 25 leads to turning on the fan.
Dependencies: mbed TextLCD TMP36
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main.cpp
00001 #include "mbed.h" 00002 #include "TextLCD.h" 00003 00004 00005 00006 00007 TextLCD lcd(PA_5, PA_6, PA_7, PB_6, PC_7, PA_9, TextLCD::LCD16x2); 00008 AnalogIn tmp36(PA_0); 00009 00010 PwmOut motor(PA_8); 00011 00012 00013 00014 00015 int main() 00016 { 00017 00018 while(1) { 00019 float voltage=3.3f*tmp36.read(); 00020 float temperature=100.0f*voltage-50.0f; 00021 char buffer[14]; 00022 00023 sprintf(buffer,"Temp in C=%.2f ",temperature); 00024 00025 00026 lcd.locate(0,0); 00027 lcd.printf(buffer,0,0); 00028 float ain; 00029 ain =tmp36.read(); 00030 printf("The temperature:",tmp36.read()); 00031 if (temperature >=25){ 00032 motor.write(.5f); // (ain); 00033 } 00034 else if (temperature<25) { 00035 motor. write(.0f); //period(0.0f); 00036 } 00037 00038 00039 00040 00041 wait(1.0); 00042 00043 00044 } 00045 } 00046 00047
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