main.cpp

00001 #include "mbed.h"
00002 /*
00003  Hotboards temp Library - Farenheit degrees
00004  Read the temperaure in celsius and then convert to Farenheit degrees, and also display
00005  the value on the serial port.
00006  The circuit 
00007  *  VDD   -->  3.3v
00008  *  SDA   -->  PB_9
00009  *  SCL   -->  PB_8
00010  *  ALERT -->  PB_13
00011  *  GND   -->  GND
00012  Library and example created by Diego from Hotboards
00013  Ported to mbed by Pedro from Hotboards
00014  This example code is in the public domain.
00015  */
00016 #include "mbed.h"
00017 #include "Hotboards_temp.h"
00018 
00019 Serial pc(USBTX, USBRX);
00020 //I2C bus instance for the library
00021 I2C device( I2C_SDA, I2C_SCL ); 
00022 // instance a sensor with address number 7 (none of the jumpers on the board is short circuited)
00023 // and also 0.5 celsius degrees resolution
00024 Hotboards_temp sensor( device, Sensor_7);
00025 
00026 
00027 
00028 int main( void ) 
00029 {
00030     
00031     // init sensor
00032     sensor.init();
00033  
00034     while(1)
00035     {           
00036          // read temperature in celcius degrees
00037          float temp = sensor.read();
00038          // convert celcius to fahrenheit
00039          float tempF = sensor.CelsiusToFarenheit( temp);
00040          // print it on the serial port
00041          pc.printf("Temp sensor : %3.1f F\r\n",tempF);
00042          // take the next value after 2 sec (just to not read too often)
00043          wait(2);
00044     }
00045 }