Tedd OKANO / Mbed 2 deprecated Multipoint_thermometer_TextLCD

Dependencies:   mbed

temp_meter.cpp@0:188e389bc1b7, 2010-01-23 (annotated)

Committer:
okano
Date:
Sat Jan 23 13:45:32 2010 +0000
Revision:
0:188e389bc1b7

        

        
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/*





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 *  I2C digital temperature sensor "LM75B" test





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 *





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 *  LM75B is an I2C based digital temperature sensor





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 *  http://www.nxp.com/pip/LM75B_2.html





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 *





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 *   This program is Expecting to use the pins 9 and 10 for I2C bus





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 *   these pins should be pulled-up properly.





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 *





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 *   The temperature read out will be shown on terminal on the PC screen.





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 *





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 *   In this demo code, two LM75B devices can be driven.





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 *   These two devices should have different I2C address setting





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 *   using its address pins (LM75B's A0 to A2 (pins 5 to 7)).





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 *   One LM75B should have all those pins tied to GND.





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 *   And another should have the pin A0(pin7) pulled-up.





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 *





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 *   From the software, those devices can be accessed by I2C addresses





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 *   "0x90" and "0x92".





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 *   It will not be as "0x90" and "0x91" because the address has





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 *   7 bit only and stuffed to left. So the "A0" setting become 0xX2.





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 *   The LSB does not care because it will be set by I2C libraly when





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 *   it transfer the data for read and write.





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 *





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 *   This code is new version that can handle the LM75B are the objects.





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 *





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 *  Copyright (c) 2010 Tedd OKANO





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 *  Released under the MIT License: http://mbed.org/license/mit





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 *





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 *  revision 1.0  16-Jan-2010   a. 1st release





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 *  revision 1.1  23-Jan-2010   a. class name has been changed from LM75B to TempSensor_LM75B





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 *                              b. class name has been changed from lcd_SB1602E to TextLCD_SB1602E





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 *                              c. copyright notice added





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 */





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#include "mbed.h"





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#include "TempSensor_LM75B.h"





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#include "TextLCD_SB1602E.h"





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Serial       pc(USBTX, USBRX); // tx, rx





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I2C          i2c( p9, p10 );        // sda, scl





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TempSensor_LM75B    thermo_sensor_0( &i2c );        //  sensor_0 using with default I2C address "0x90".





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TempSensor_LM75B    thermo_sensor_1( &i2c, 0x92 );  //  sensor_1 gaved I2C address since that address pin A0=HIGH.





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TextLCD_SB1602E        lcd( &i2c );





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int main() {





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    float  t0;





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    float  t1;





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    int    i    = 0;





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    while (1) {





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        t0    = thermo_sensor_0;





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        t1    = thermo_sensor_1;





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        pc.printf( "  (%d)  sensor_0= %4.1f\xDF,  sensor_1= %4.1f(degree-C)\n", i++, t0, t1 );





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        lcd.printf( 0, "sensor0   %4.1f%cC\r", t0, 0xDF );





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        lcd.printf( 1, "sensor1   %4.1f%cC\r", t1, 0xDF );





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        wait( 1 );





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    }





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}





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