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@@ -1,4 +1,38 @@
 pcsensor
 ========
 
-PCSensor / TEMPer2 driver for linux
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+PCSensor / TEMPer2 driver for linux
+
+This is based on PCSensor v. 1.0.1 by Juan Carlos Perez
+
+All I've done is tweak the tool to output both the temperature from the internal
+as well as the external sensor.
+
+/*
+ * pcsensor.c by Juan Carlos Perez (c) 2011 (cray@isp-sl.com)
+ * based on Temper.c by Robert Kavaler (c) 2009 (relavak.com)
+ * All rights reserved.
+ *
+ * 2011/08/30 Thanks to EdorFaus: bugfix to support negative temperatures
+ *
+ * Temper driver for linux. This program can be compiled either as a library
+ * or as a standalone program (-DUNIT_TEST). The driver will work with some
+ * TEMPer usb devices from RDing (www.PCsensor.com).
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Juan Carlos Perez ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL Robert kavaler BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
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