Revision 0:1be38995591b, committed 2012-10-26

Comitter:

chris

Date:

Fri Oct 26 20:34:16 2012 +0000

Child:

1:6a70c9303bbe

Commit message:

First commit

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LM75B.cpp	Fri Oct 26 20:34:16 2012 +0000
@@ -0,0 +1,49 @@
+
+/*
+Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+ 
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+ 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+ 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "LM75B.h"
+
+LM75B::LM75B(PinName sda, PinName scl) : i2c(sda, scl)
+{
+   char cmd[2];
+   cmd[0]    = LM75B_Conf;
+   cmd[1]    = 0x0;   
+   i2c.write( LM75B_ADDR, cmd, 2);
+}
+
+
+
+LM75B::~LM75B()
+{
+
+}
+
+float LM75B::read()
+{
+    char cmd[2];
+    cmd[0] = LM75B_Temp;
+   
+    i2c.write( LM75B_ADDR, cmd, 1); // Send command string
+    i2c.read( LM75B_ADDR, cmd, 2); // Send command string    
+    return (   float((cmd[0]<<8)|cmd[1]) / 256.0   );
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LM75B.h	Fri Oct 26 20:34:16 2012 +0000
@@ -0,0 +1,64 @@
+/* Copyright (c) 2012 cstyles, MIT License
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
+ * and associated documentation files (the "Software"), to deal in the Software without restriction, 
+ * including without limitation the rights to use, copy, modify, merge, publish, distribute, 
+ * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is 
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or 
+ * substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING 
+ * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef LM75B_H
+#define LM75B_H
+
+#include "mbed.h"
+
+//  LM75B IIC address
+#define    LM75B_ADDR 0x90
+
+//  LM75B registers
+#define    LM75B_Conf        0x01
+#define    LM75B_Temp        0x00
+#define    LM75B_Tos         0x03
+#define    LM75B_Thyst       0x02
+
+//!Library for the LM75B temperature sensor.
+/*!
+The LM75B is an I2C digital temperature sensor, with a range of -55C to +125C and a 0.125C resolution.
+*/
+class LM75B
+{
+public:
+  //!Creates an instance of the class.
+  /*!
+  Connect module at I2C address addr using I2C port pins sda and scl.
+  LM75B
+  */
+  LM75B(PinName sda, PinName scl);
+  
+  /*!
+  Destroys instance.
+  */ 
+  ~LM75B();
+  
+  //!Reads the current temperature.
+  /*!
+  Reads the temperature register of the LM75B and converts it to a useable value.
+  */
+  float read();
+  
+private:
+  
+  I2C i2c;
+
+};
+
+#endif
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