eunkyoung kim / LM75B

modify the write function for temperature update If you use update temperature, you modify the repeat condition when write function use - read16() -> m_I2C.write(m_Addr, &reg, 1); //stop condition - read16() -> m_I2C.write(m_Addr, &reg, 1,1); //repeat condition

Fork of LM75B by Neil Thiessen

Diff: LM75B.cpp

Revision:
17:c62f1e2d721e
Parent:
9:74b44a27fa40
--- 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);