ATHANASIOS POLITIS
/
LM74test
LM74 temperature sensor testing, using PC serial and 20x2 text LCD
main.cpp
- Committer:
- atpolitis
- Date:
- 2011-03-10
- Revision:
- 0:e43dcd4f2ed8
File content as of revision 0:e43dcd4f2ed8:
// Hello World! for the TextLCD #include "mbed.h" #include "TextLCD.h" #include "TmpLM74.h" DigitalOut myled(LED1); //TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD20x4); // rs, e, d4-d7 //TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD16x2); // rs, e, d4-d7 TextLCD lcd(p15, p16, p17, p18, p19, p20, TextLCD::LCD20x2); // rs, e, d4-d7 Serial pc(USBTX, USBRX); // tx, rx TmpLM74 Temp74(p5, p6, p7, p8); // LM74 connected on: mosi, miso, sclk, csLM74 void showTemp74(void); int main() { lcd.cls(); wait(2); lcd.locate(0,0); // lcd.printf("Hello World12345678!"); lcd.printf("Hello World!"); pc.printf("HELLO!, testing LM74 temperature sensor ...\n\r"); wait(2); lcd.locate(0,0); // locate(column,row) lcd.printf("test LM74 tmp sensor"); lcd.locate(0,1); lcd.printf("LM74temp = 110.8 *C "); wait(1); while(1) { myled = !myled; showTemp74(); wait(2); /* myled = !myled; showTemp74(); Temp74.shutLM74down(); wait(1); */ } } // ****************************************************************** // ****************************************************************** void showTemp74(void){ float TempC = Temp74.readTemp(); lcd.locate(11,1); lcd.printf(" "); lcd.locate(11,1); pc.printf("Temperature = "); if(TempC > MAX_LM74_TEMP) { pc.printf(" ? *C\n", TempC); lcd.printf(" ? *C", TempC); } else { pc.printf("%3.1f *C\n", TempC); lcd.printf("%3.1f *C", TempC); } } // ******************************************************************