Diff: utils.cpp

Revision:

117:e9facba9db27

Parent:

114:472502b31a12

Child:

119:ee6a53069455

--- a/utils.cpp	Thu Apr 23 20:24:09 2015 +0000
+++ b/utils.cpp	Thu Apr 23 21:53:28 2015 +0000
@@ -1,5 +1,31 @@
 #include "utils.h"
 
+static char itoh[16];
+char hexbuf[10];
+
+void hex_init(void) {
+  itoh[0] = '0'; itoh[1] = '1'; itoh[2] = '2'; itoh[3] = '3';
+  itoh[4] = '4'; itoh[5] = '5'; itoh[6] = '6'; itoh[7] = '7';
+  itoh[8] = '8'; itoh[9] = '9'; itoh[10] = 'a'; itoh[11] = 'b';
+  itoh[12] = 'c'; itoh[13] = 'd'; itoh[14] = 'e'; itoh[15] = 'f';
+}
+
+char * hex8 (uint8_t i) { 
+  hexbuf[0] = itoh[(i>>4) & 0x0f];
+  hexbuf[1] = itoh[i & 0x0f];
+  hexbuf[2] = 0;
+  return hexbuf;
+}
+
+char * hex16 (uint16_t i) {
+  hexbuf[0] = itoh[(i>>12) & 0x0f];
+  hexbuf[1] = itoh[(i>>8) & 0x0f];
+  hexbuf[2] = itoh[(i>>4) & 0x0f];
+  hexbuf[3] = itoh[i & 0x0f];
+  hexbuf[4] = 0;
+  return hexbuf;
+}
+
 int ls_comp( const void * a, const void * b ){ return( *( int * )a - *( int * )b ); }
 
 void reverse( char str[], int length ){