Diff: OneWire/crc16.cpp

Revision:

4:031e71e61e80

Parent:

3:b4277f7c538e

--- a/OneWire/crc16.cpp	Mon Jun 02 13:17:18 2014 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,56 +0,0 @@
-#include <inttypes.h>
-#include "mbed.h"
-#include "onewire.h"
-
-#define CRC16INIT    0x0000
-//#define CRC16POLY    0x8005; // Polynome =x^16 + x^15 + x^2 + x^0 = 0x18005
-#define CRC16POLY    0xA001;
-
-uint16_t crc16(uint8_t* octets, uint16_t nboctets)
-{
-uint16_t crc = CRC16INIT;
-int i, done = 0;
-uint8_t todo;
-    if (nboctets != 0) {
-        do {
-            todo = octets[done];
-            crc ^= todo;
-            for (i = 0; i < 8; i++) {
-                if (crc % 2 != 0) {
-                    crc = (crc >> 1) ^ CRC16POLY;
-                } else {
-                    crc = crc >> 1;
-                }
-            }
-            done++;
-        } while (done < nboctets);
-        
-        
-    }
-
-return crc;
-}
-//CRC16 byte, always two bytes, bit inverted, LSByte first 
-uint8_t ctrl_crc16(uint8_t* octets, uint16_t nboctets)
-{
-    uint16_t crc;
-    uint8_t *ptr;
-#ifdef DEBUG
-    printf( "\nCRC16 : " );
-    for ( uint8_t i=0 ; i< nboctets; i++ )
-        printf(":%2.2X",octets[i]);
-    printf( "\n" );
-#endif
-    crc =~crc16(octets, nboctets-2);
-    ptr=(uint8_t*)&crc;
-#ifdef DEBUG
-    printf( "\n" );
-    printf("CRC16:%X",crc);
-    printf( "\n" );
-#endif
-    if(*ptr==octets[nboctets-2])
-        if(*++ptr==octets[nboctets-1])
-            return 0;
-
-    return 1;
- } 
\ No newline at end of file