Diff: system/utilities.cpp

Revision:

0:cb80564f40e1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/system/utilities.cpp	Thu Mar 17 09:32:46 2016 +0000
@@ -0,0 +1,85 @@
+/*
+ / _____)             _              | |
+( (____  _____ ____ _| |_ _____  ____| |__
+ \____ \| ___ |    (_   _) ___ |/ ___)  _ \
+ _____) ) ____| | | || |_| ____( (___| | | |
+(______/|_____)_|_|_| \__)_____)\____)_| |_|
+    (C)2013 Semtech
+
+Description: Helper functions implementation
+
+License: Revised BSD License, see LICENSE.TXT file include in the project
+
+Maintainer: Miguel Luis and Gregory Cristian
+*/
+#include <stdlib.h>
+#include <stdio.h>
+#include "board.h"
+#include "utilities.h"
+
+/*!
+ * Redefinition of rand() and srand() standard C functions.
+ * These functions are redefined in order to get the same behavior across
+ * different compiler toolchains implementations.
+ */
+// Standard random functions redefinition start
+#define RAND_LOCAL_MAX 2147483647L
+
+static uint32_t next = 1;
+
+int32_t rand1( void )
+{
+    return ( ( next = next * 1103515245L + 12345L ) % RAND_LOCAL_MAX );
+}
+
+void srand1( uint32_t seed )
+{
+    next = seed;
+}
+// Standard random functions redefinition end
+
+int32_t randr( int32_t min, int32_t max )
+{
+    return ( int32_t )rand1( ) % ( max - min + 1 ) + min;
+}
+
+void memcpy1( uint8_t *dst, const uint8_t *src, uint16_t size )
+{
+    while( size-- )
+    {
+        *dst++ = *src++;
+    }
+}
+
+void memcpyr( uint8_t *dst, const uint8_t *src, uint16_t size )
+{
+    dst = dst + ( size - 1 );
+    while( size-- )
+    {
+        *dst-- = *src++;
+    }
+}
+
+void memset1( uint8_t *dst, uint8_t value, uint16_t size )
+{
+    while( size-- )
+    {
+        *dst++ = value;
+    }
+}
+
+int8_t Nibble2HexChar( uint8_t a )
+{
+    if( a < 10 )
+    {
+        return '0' + a;
+    }
+    else if( a < 16 )
+    {
+        return 'A' + ( a - 10 );
+    }
+    else
+    {
+        return '?';
+    }
+}