Chris Styles / LM75B

A simply library for the LM75B I2C temperature sensor

Dependents:   LM75B-HelloWorld app-board-Sprint-SMS-LM75B SprintUSBModemWebsocketTest-Temp app-board-Ethernet-Websocket ... more

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Show/hide line numbers LM75B.cpp Source File

LM75B.cpp

00001 #include "LM75B.h"
00002 
00003 LM75B::LM75B(PinName sda, PinName scl) : i2c(sda, scl)
00004 {
00005    char cmd[2];
00006    cmd[0]    = LM75B_Conf;
00007    cmd[1]    = 0x0;   
00008    i2c.write( LM75B_ADDR, cmd, 2);
00009 }
00010 
00011 
00012 
00013 LM75B::~LM75B ()
00014 {
00015 
00016 }
00017 
00018 float LM75B::read()
00019 {
00020     char cmd[2];
00021     cmd[0] = LM75B_Temp;
00022    
00023     i2c.write( LM75B_ADDR, cmd, 1); // Send command string
00024     i2c.read( LM75B_ADDR, cmd, 2); // Send command string    
00025     return (   float((cmd[0]<<8)|cmd[1]) / 256.0   );
00026 }
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