Diff: ByteOperations.cpp

Revision:

0:8ce24e6c4de1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ByteOperations.cpp	Tue Jan 05 16:44:57 2016 +0000
@@ -0,0 +1,37 @@
+#include "ByteOperations.h"
+#include <stdint.h>
+
+
+/* low index equals low nibble */
+/* Write 32 bit var to 4 bytes */
+void write_32_to_8(int *i, uint8_t dst[], uint32_t src){
+	dst[(*i)++] = (src >> 0)&0xFF ;
+	dst[(*i)++] = (src >> 8)&0xFF ;
+	dst[(*i)++] = (src >> 16)&0xFF;
+	dst[(*i)++] = (src >> 24)&0xFF;
+}
+
+/* Write 16 bit var to 2 bytes */
+void write_16_to_8(int *i, uint8_t dst[], uint16_t src){
+	dst[(*i)++] = (src >> 0)&0xFF ;
+	dst[(*i)++] = (src >> 8)&0xFF ;
+}
+
+/* Write 4 bytes to 32 bit var*/
+uint32_t read_8_to_32(int *i, uint8_t *src){
+	uint32_t data = 0;
+	data |= (src[(*i)++] << 0) ; 
+	data |= (src[(*i)++] << 8) ; 
+	data |= (src[(*i)++] << 16); 
+	data |= (src[(*i)++] << 24); 
+	return data;
+}
+
+/* Write 2 bytes to 16 bit var*/
+uint16_t read_8_to_16(int *i, uint8_t *src){
+	uint16_t data = 0;
+	data |= (src[(*i)++] << 0) ;
+	data |= (src[(*i)++] << 8) ;
+	return data;
+}
+