Tedd OKANO / PCT2075

Component class library for PCT2075 and LM75B. The PCT2075 is a temperature-to-digital converter featuring +/-1 degree-C accuracy over -25 degree-C to +100 degree-C range. It uses an on-chip band gap temperature sensor and Sigma-Delta A-to-D conversion technique with an overtemperature detection output that is a drop-in replacement for other LM75 series thermal sensors.

Dependents:   PCT2075_Hello Brushless_STM3_ESC_2019_10 Alternator2020_06

base_class/I2CTempSensor.cpp@1:0cdfb3ea5969, 2015-03-05 (annotated)

Committer:
okano
Date:
Thu Mar 05 06:14:19 2015 +0000
Revision:
1:0cdfb3ea5969
Parent:
0:ae0333775d7e 
comment added

Who changed what in which revision?

UserRevisionLine numberNew contents of line
okano 0:ae0333775d7e 1 #include "I2CTempSensor.h"
okano 0:ae0333775d7e 2
okano 0:ae0333775d7e 3 I2CTempSensor::I2CTempSensor( PinName i2c_sda, PinName i2c_scl, char address )
okano 0:ae0333775d7e 4 : i2c_p( new I2C( i2c_sda, i2c_scl ) ), i2c( *i2c_p ), adr( address )
okano 0:ae0333775d7e 5 {
okano 0:ae0333775d7e 6 init();
okano 0:ae0333775d7e 7 }
okano 0:ae0333775d7e 8
okano 0:ae0333775d7e 9 I2CTempSensor::I2CTempSensor( I2C &i2c_obj, char address )
okano 0:ae0333775d7e 10 : i2c_p( NULL ), i2c( i2c_obj ), adr( address )
okano 0:ae0333775d7e 11 {
okano 0:ae0333775d7e 12 init();
okano 0:ae0333775d7e 13 }
okano 0:ae0333775d7e 14
okano 0:ae0333775d7e 15 I2CTempSensor::~I2CTempSensor()
okano 0:ae0333775d7e 16 {
okano 0:ae0333775d7e 17 if ( NULL != i2c_p )
okano 0:ae0333775d7e 18 delete i2c_p;
okano 0:ae0333775d7e 19 }
okano 0:ae0333775d7e 20
okano 0:ae0333775d7e 21 void I2CTempSensor::init( void )
okano 0:ae0333775d7e 22 {
okano 0:ae0333775d7e 23 char command[ 2 ];
okano 0:ae0333775d7e 24
okano 0:ae0333775d7e 25 command[ 0 ] = LM75B_Conf;
okano 0:ae0333775d7e 26 command[ 1 ] = 0x00;
okano 0:ae0333775d7e 27
okano 0:ae0333775d7e 28 i2c.write( adr, command, 2 );
okano 0:ae0333775d7e 29 }
okano 0:ae0333775d7e 30
okano 0:ae0333775d7e 31 short I2CTempSensor::read16( void )
okano 0:ae0333775d7e 32 {
okano 0:ae0333775d7e 33 char command[ 2 ];
okano 0:ae0333775d7e 34
okano 0:ae0333775d7e 35 command[ 0 ] = LM75B_Temp;
okano 0:ae0333775d7e 36
okano 0:ae0333775d7e 37 i2c.write( adr, command, 1 ); // Send command string
okano 0:ae0333775d7e 38 i2c.read( adr, command, 2 ); // read two bytes data
okano 0:ae0333775d7e 39
okano 0:ae0333775d7e 40 return ( (command[ 0 ] << 8)| command[1] );
okano 0:ae0333775d7e 41 }