Diff: Utilities.cpp

Revision:

0:ea5b951002cf

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Utilities.cpp	Sun Sep 09 22:09:00 2012 +0000
@@ -0,0 +1,75 @@
+/* Copyright (c) 2012 Georgios Petrou, 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.
+ */
+ 
+#include "Utilities.h"
+ 
+uint8_t Utilities::GetCheckSum(const uint8_t *data, uint8_t length)
+{
+    uint8_t checkSum = 0;
+
+    for(int i = 0; i < length; i++)
+        checkSum += data[i];
+
+    checkSum = ~checkSum;
+    
+    return checkSum;
+}
+
+void Utilities::ConvertUInt16ToUInt8Array(uint16_t value, uint8_t* data)
+{
+    data[0] = value;
+    data[1] = value >> 8;
+}        
+      
+void Utilities::ConvertInt16ToUInt8Array(int16_t value, uint8_t* data)
+{
+    data[0] = value;
+    data[1] = value >> 8;
+}           
+  
+void Utilities::ConvertUInt32ToUInt8Array(uint32_t value, uint8_t* data)
+{
+    data[0] = value;
+    data[1] = value >> 8;
+    data[2] = value >> 16;
+    data[3] = value >> 24;
+} 
+      
+void Utilities::ConvertInt32ToUInt8Array(int32_t value, uint8_t* data)
+{
+    data[0] = value;
+    data[1] = value >> 8;
+    data[2] = value >> 16;
+    data[3] = value >> 24;
+} 
+
+uint16_t Utilities::ConvertUInt8ArrayToUInt16(uint8_t* data)
+{
+    return (((uint16_t)data[1]) << 8) | ((uint16_t)data[0]);
+}
+
+int16_t Utilities::ConvertUInt8ArrayToInt16(uint8_t* data)
+{
+    return (((int16_t)data[1]) << 8) | ((int16_t)data[0]);
+}
+
+int32_t Utilities::ConvertUInt8ArrayToInt32(uint8_t* data)
+{
+    return  (((int32_t)data[3]) << 24) | (((int32_t)data[2]) << 16) | (((int32_t)data[1]) << 8) | ((int32_t)data[0]);
+}
+ 
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