eunkyoung kim / LM75B

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Fork of LM75B by Neil Thiessen

Files at this revision

API Documentation at this revision

Revision 17:c62f1e2d721e, committed 2015-07-20

Comitter:
eunkyoungkim
Date:
Mon Jul 20 09:36:26 2015 +0000
Parent:
12:fc27dc535ea9
Commit message:
modify the Source code(in LM75B.cpp); - in LM75B::read16(char reg); write function is modified from stop condition to repeated condition for temperture value update; m_I2C.write(m_Addr, &reg, 1) ->m_I2C.write(m_Addr, &reg,1,1);;

Changed in this revision

LM75B.cpp Show annotated file Show diff for this revision Revisions of this file
LM75B.h Show annotated file Show diff for this revision Revisions of this file 
--- a/LM75B.cpp	Mon Sep 16 21:32:18 2013 +0000
+++ b/LM75B.cpp	Mon Jul 20 09:36:26 2015 +0000
@@ -16,12 +16,14 @@
 
 #include "LM75B.h"
 
-LM75B::LM75B(PinName sda, PinName scl, Address addr) : m_I2C(sda, scl)
+LM75B::LM75B(PinName sda, PinName scl, Address addr, int hz) : m_I2C(sda, scl)
 {
     //Set the internal device address
     m_Addr = (int)addr;
+    m_I2C.frequency(hz);
 }
 
+
 bool LM75B::open(void)
 {
     //Probe for the LM75B using a Zero Length Transfer
@@ -187,13 +189,12 @@
 
     //Read the 11-bit raw temperature value
     value = read16(REG_TEMP) >> 5;
-
     //Sign extend negative numbers
     if (value & (1 << 10))
         value |= 0xFC00;
 
     //Return the temperature in °C
-    return value * 0.125;
+    return value*0.125;
 }
 
 char LM75B::read8(char reg)
@@ -227,7 +228,7 @@
     char buff[2];
 
     //Select the register
-    m_I2C.write(m_Addr, &reg, 1);
+    m_I2C.write(m_Addr, &reg, 1,1);
 
     //Read the 16-bit register
     m_I2C.read(m_Addr, buff, 2);

--- a/LM75B.h	Mon Sep 16 21:32:18 2013 +0000
+++ b/LM75B.h	Mon Jul 20 09:36:26 2015 +0000
@@ -101,7 +101,8 @@
      * @param scl The I2C clock pin.
      * @param addr The I2C slave address (defaults to ADDRESS_0).
      */
-    LM75B(PinName sda, PinName scl, Address addr = ADDRESS_0);
+    //LM75B(PinName sda, PinName scl, Address addr = ADDRESS_0);
+    LM75B::LM75B(PinName sda, PinName scl, Address addr, int hz);
 
     /** Probe for the LM75B and reset it to default configuration if present
      *