mirror of
https://github.com/oliverschmidt/contiki.git
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dos2unix conversion
This commit is contained in:
nifi
parent
eb24078ffb
commit
f3d22e6287
@ -1,176 +1,176 @@
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/*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
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||||
*
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||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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#include "contiki.h"
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#include "contiki-lib.h"
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#include "contiki-net.h"
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#include "mac.h"
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#include <string.h>
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#include <stdio.h>
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#define MACDEBUG 0
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#define PRINT6ADDR(addr) PRINTF(" %02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x ", ((u8_t *)addr)[0], ((u8_t *)addr)[1], ((u8_t *)addr)[2], ((u8_t *)addr)[3], ((u8_t *)addr)[4], ((u8_t *)addr)[5], ((u8_t *)addr)[6], ((u8_t *)addr)[7], ((u8_t *)addr)[8], ((u8_t *)addr)[9], ((u8_t *)addr)[10], ((u8_t *)addr)[11], ((u8_t *)addr)[12], ((u8_t *)addr)[13], ((u8_t *)addr)[14], ((u8_t *)addr)[15])
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#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",lladdr->addr[0], lladdr->addr[1], lladdr->addr[2], lladdr->addr[3],lladdr->addr[4], lladdr->addr[5])
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#else
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#define PRINTF(...)
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#define PRINT6ADDR(addr)
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#endif
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#define PING6_NB 5
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#define PING6_DATALEN 16
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#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
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#define UIP_ICMP_BUF ((struct uip_icmp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
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static struct etimer ping6_periodic_timer;
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static u8_t count = 0;
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static char command[20];
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static u16_t addr[8];
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uip_ipaddr_t dest_addr;
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PROCESS(ping6_process, "PING6 process");
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AUTOSTART_PROCESSES(&ping6_process);
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/*---------------------------------------------------------------------------*/
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static u8_t
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ping6handler(process_event_t ev, process_data_t data)
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{
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if(count == 0){
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#if MACDEBUG
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// Setup destination address.
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addr[0] = 0xFE80;
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addr[4] = 0x6466;
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addr[5] = 0x6666;
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addr[6] = 0x6666;
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addr[7] = 0x6666;
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uip_ip6addr(&dest_addr, addr[0], addr[1],addr[2],
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addr[3],addr[4],addr[5],addr[6],addr[7]);
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// Set the command to fool the 'if' below.
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memcpy(command, (void *)"ping6", 5);
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#else
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/* prompt */
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printf("> ");
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/** \note the scanf here is blocking (the all stack is blocked waiting
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* for user input). This is far from ideal and could be improved
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*/
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scanf("%s", command);
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if(strcmp(command,"ping6") != 0){
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PRINTF("> invalid command\n");
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return 0;
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}
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if(scanf(" %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x",
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&addr[0],&addr[1],&addr[2],&addr[3],
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&addr[4],&addr[5],&addr[6],&addr[7]) == 8){
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uip_ip6addr(&dest_addr, addr[0], addr[1],addr[2],
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addr[3],addr[4],addr[5],addr[6],addr[7]);
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} else {
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PRINTF("> invalid ipv6 address format\n");
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return 0;
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}
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#endif
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}
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if((strcmp(command,"ping6") == 0) && (count < PING6_NB)){
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UIP_IP_BUF->vtc = 0x60;
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UIP_IP_BUF->tcflow = 1;
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UIP_IP_BUF->flow = 0;
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UIP_IP_BUF->proto = UIP_PROTO_ICMP6;
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UIP_IP_BUF->ttl = uip_ds6_if.cur_hop_limit;
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uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, &dest_addr);
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uip_ds6_select_src(&UIP_IP_BUF->srcipaddr, &UIP_IP_BUF->destipaddr);
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UIP_ICMP_BUF->type = ICMP6_ECHO_REQUEST;
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UIP_ICMP_BUF->icode = 0;
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/* set identifier and sequence number to 0 */
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memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN, 0, 4);
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/* put one byte of data */
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memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN,
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count, PING6_DATALEN);
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uip_len = UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN + UIP_IPH_LEN + PING6_DATALEN;
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UIP_IP_BUF->len[0] = (u8_t)((uip_len - 40) >> 8);
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UIP_IP_BUF->len[1] = (u8_t)((uip_len - 40) & 0x00FF);
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UIP_ICMP_BUF->icmpchksum = 0;
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UIP_ICMP_BUF->icmpchksum = ~uip_icmp6chksum();
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PRINTF("Sending Echo Request to");
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PRINT6ADDR(&UIP_IP_BUF->destipaddr);
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PRINTF("from");
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PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
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PRINTF("\n");
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UIP_STAT(++uip_stat.icmp.sent);
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tcpip_ipv6_output();
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count++;
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etimer_set(&ping6_periodic_timer, 3 * CLOCK_SECOND);
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return 1;
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}
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return 0;
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(ping6_process, ev, data)
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{
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u8_t cont = 1;
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PROCESS_BEGIN();
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PRINTF("In Process PING6\n");
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PRINTF("Wait for DAD\n");
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etimer_set(&ping6_periodic_timer, 15*CLOCK_SECOND);
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while(cont) {
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PROCESS_YIELD();
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cont = ping6handler(ev, data);
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}
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PRINTF("END PING6\n");
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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/*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
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||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
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||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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#include "contiki.h"
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#include "contiki-lib.h"
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#include "contiki-net.h"
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#include "mac.h"
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#include <string.h>
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#include <stdio.h>
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#define MACDEBUG 0
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#define DEBUG 0
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#define PRINT6ADDR(addr) PRINTF(" %02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x ", ((u8_t *)addr)[0], ((u8_t *)addr)[1], ((u8_t *)addr)[2], ((u8_t *)addr)[3], ((u8_t *)addr)[4], ((u8_t *)addr)[5], ((u8_t *)addr)[6], ((u8_t *)addr)[7], ((u8_t *)addr)[8], ((u8_t *)addr)[9], ((u8_t *)addr)[10], ((u8_t *)addr)[11], ((u8_t *)addr)[12], ((u8_t *)addr)[13], ((u8_t *)addr)[14], ((u8_t *)addr)[15])
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#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",lladdr->addr[0], lladdr->addr[1], lladdr->addr[2], lladdr->addr[3],lladdr->addr[4], lladdr->addr[5])
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#else
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#define PRINTF(...)
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#define PRINT6ADDR(addr)
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#endif
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#define PING6_NB 5
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#define PING6_DATALEN 16
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#define UIP_IP_BUF ((struct uip_ip_hdr *)&uip_buf[UIP_LLH_LEN])
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#define UIP_ICMP_BUF ((struct uip_icmp_hdr *)&uip_buf[uip_l2_l3_hdr_len])
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static struct etimer ping6_periodic_timer;
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static u8_t count = 0;
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static char command[20];
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static u16_t addr[8];
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uip_ipaddr_t dest_addr;
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PROCESS(ping6_process, "PING6 process");
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AUTOSTART_PROCESSES(&ping6_process);
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/*---------------------------------------------------------------------------*/
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static u8_t
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ping6handler(process_event_t ev, process_data_t data)
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{
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if(count == 0){
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#if MACDEBUG
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// Setup destination address.
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addr[0] = 0xFE80;
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addr[4] = 0x6466;
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addr[5] = 0x6666;
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addr[6] = 0x6666;
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addr[7] = 0x6666;
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uip_ip6addr(&dest_addr, addr[0], addr[1],addr[2],
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addr[3],addr[4],addr[5],addr[6],addr[7]);
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// Set the command to fool the 'if' below.
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memcpy(command, (void *)"ping6", 5);
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#else
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/* prompt */
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printf("> ");
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/** \note the scanf here is blocking (the all stack is blocked waiting
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* for user input). This is far from ideal and could be improved
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*/
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scanf("%s", command);
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if(strcmp(command,"ping6") != 0){
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PRINTF("> invalid command\n");
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return 0;
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}
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if(scanf(" %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x",
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&addr[0],&addr[1],&addr[2],&addr[3],
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&addr[4],&addr[5],&addr[6],&addr[7]) == 8){
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uip_ip6addr(&dest_addr, addr[0], addr[1],addr[2],
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addr[3],addr[4],addr[5],addr[6],addr[7]);
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} else {
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PRINTF("> invalid ipv6 address format\n");
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return 0;
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}
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#endif
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}
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if((strcmp(command,"ping6") == 0) && (count < PING6_NB)){
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UIP_IP_BUF->vtc = 0x60;
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UIP_IP_BUF->tcflow = 1;
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UIP_IP_BUF->flow = 0;
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UIP_IP_BUF->proto = UIP_PROTO_ICMP6;
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UIP_IP_BUF->ttl = uip_ds6_if.cur_hop_limit;
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uip_ipaddr_copy(&UIP_IP_BUF->destipaddr, &dest_addr);
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uip_ds6_select_src(&UIP_IP_BUF->srcipaddr, &UIP_IP_BUF->destipaddr);
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UIP_ICMP_BUF->type = ICMP6_ECHO_REQUEST;
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UIP_ICMP_BUF->icode = 0;
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/* set identifier and sequence number to 0 */
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memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN, 0, 4);
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/* put one byte of data */
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memset((void *)UIP_ICMP_BUF + UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN,
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count, PING6_DATALEN);
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uip_len = UIP_ICMPH_LEN + UIP_ICMP6_ECHO_REQUEST_LEN + UIP_IPH_LEN + PING6_DATALEN;
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UIP_IP_BUF->len[0] = (u8_t)((uip_len - 40) >> 8);
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UIP_IP_BUF->len[1] = (u8_t)((uip_len - 40) & 0x00FF);
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UIP_ICMP_BUF->icmpchksum = 0;
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UIP_ICMP_BUF->icmpchksum = ~uip_icmp6chksum();
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PRINTF("Sending Echo Request to");
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PRINT6ADDR(&UIP_IP_BUF->destipaddr);
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PRINTF("from");
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PRINT6ADDR(&UIP_IP_BUF->srcipaddr);
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PRINTF("\n");
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UIP_STAT(++uip_stat.icmp.sent);
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tcpip_ipv6_output();
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count++;
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etimer_set(&ping6_periodic_timer, 3 * CLOCK_SECOND);
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return 1;
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}
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return 0;
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}
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||||
/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(ping6_process, ev, data)
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{
|
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u8_t cont = 1;
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PROCESS_BEGIN();
|
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PRINTF("In Process PING6\n");
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PRINTF("Wait for DAD\n");
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||||
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etimer_set(&ping6_periodic_timer, 15*CLOCK_SECOND);
|
||||
|
||||
while(cont) {
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||||
PROCESS_YIELD();
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||||
cont = ping6handler(ev, data);
|
||||
}
|
||||
|
||||
PRINTF("END PING6\n");
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||||
PROCESS_END();
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||||
}
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||||
/*---------------------------------------------------------------------------*/
|
||||
|
||||
326
core/lib/gcr.c
326
core/lib/gcr.c
@ -1,163 +1,163 @@
|
||||
/*
|
||||
* Copyright (c) 2006, Swedish Institute of Computer Science
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* @(#)$Id: gcr.c,v 1.1 2006/10/05 09:23:41 adamdunkels Exp $
|
||||
*/
|
||||
|
||||
/**
|
||||
* \file
|
||||
* Implementation of GCR coding/decoding
|
||||
* \author
|
||||
* Joakim Eriksson <joakime@sics.se>
|
||||
*
|
||||
*/
|
||||
|
||||
/* GCR conversion table - used for converting ordinary byte to 10-bits */
|
||||
/* (or 4 bits to 5) */
|
||||
static const unsigned char GCR_encode[16] = {
|
||||
0x0a, 0x0b, 0x12, 0x13,
|
||||
0x0e, 0x0f, 0x16, 0x17,
|
||||
0x09, 0x19, 0x1a, 0x1b,
|
||||
0x0d, 0x1d, 0x1e, 0x15
|
||||
};
|
||||
|
||||
/* 5 bits > 4 bits (0xff => invalid) */
|
||||
static const unsigned char GCR_decode[32] = {
|
||||
0xff, 0xff, 0xff, 0xff, // 0 - 3invalid...
|
||||
0xff, 0xff, 0xff, 0xff, // 4 - 7 invalid...
|
||||
0xff, 0x08, 0x00, 0x01, // 8 invalid... 9 = 8, a = 0, b = 1
|
||||
0xff, 0x0c, 0x04, 0x05, // c invalid... d = c, e = 4, f = 5
|
||||
|
||||
0xff, 0xff, 0x02, 0x03, // 10-11 invalid...
|
||||
0xff, 0x0f, 0x06, 0x07, // 14 invalid...
|
||||
0xff, 0x09, 0x0a, 0x0b, // 18 invalid...
|
||||
0xff, 0x0d, 0x0e, 0xff, // 1c, 1f invalid...
|
||||
};
|
||||
|
||||
static unsigned char gcr_bits = 0;
|
||||
static unsigned short gcr_val = 0;
|
||||
|
||||
/* Call before starting encoding or decoding */
|
||||
void gcr_init() {
|
||||
gcr_val = 0;
|
||||
gcr_bits = 0;
|
||||
}
|
||||
|
||||
/* Use this to check if encoding / decoding is complete for now */
|
||||
unsigned char gcr_finished() {
|
||||
return gcr_bits == 0;
|
||||
}
|
||||
|
||||
/* Encode one character - and store in bits - get encoded with get_encoded */
|
||||
void gcr_encode(unsigned char raw_data) {
|
||||
gcr_val |=
|
||||
((GCR_encode[raw_data >> 4u] << 5u ) |
|
||||
GCR_encode[raw_data & 0xf]) << gcr_bits;
|
||||
gcr_bits += 10;
|
||||
}
|
||||
|
||||
/* Gets the current char of the encoded stream */
|
||||
unsigned char gcr_get_encoded(unsigned char *raw_data) {
|
||||
if (gcr_bits >= 8) {
|
||||
*raw_data = (unsigned char) (gcr_val & 0xff);
|
||||
gcr_val = gcr_val >> 8u;
|
||||
gcr_bits = gcr_bits - 8;
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Decode one char - result can be get from get_decoded */
|
||||
void gcr_decode(unsigned char gcr_data) {
|
||||
gcr_val |= gcr_data << gcr_bits;
|
||||
gcr_bits += 8;
|
||||
}
|
||||
|
||||
/* check if the current decoded stream is correct */
|
||||
unsigned char gcr_valid() {
|
||||
if (gcr_bits >= 10) {
|
||||
unsigned short val = gcr_val & 0x3ff;
|
||||
if ((GCR_decode[val >> 5u] << 4u) == 0xff ||
|
||||
(GCR_decode[val & 0x1f]) == 0xff) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* gets the decoded stream - if any char is available */
|
||||
unsigned char gcr_get_decoded(unsigned char *raw_data) {
|
||||
if (gcr_bits >= 10) {
|
||||
unsigned short val = gcr_val & 0x3ff;
|
||||
*raw_data = (unsigned char) ((GCR_decode[val >> 5] << 4) |
|
||||
(GCR_decode[val & 0x1f]));
|
||||
gcr_val = gcr_val >> 10;
|
||||
gcr_bits = gcr_bits - 10;
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
static const char encoded[] = {
|
||||
0x4a, 0x25, 0xa5, 0xfc, 0x96, 0xff, 0xff, 0xb5, 0xd4, 0x5a, 0xea, 0xff, 0xff, 0xaa, 0xd3, 0xff
|
||||
};
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
// unsigned char c[] = "testing gcr 1 2 3 4 5 6...";
|
||||
unsigned char c[] = { 0, 8, 0xe0, 0x2b, 0xac, 0x10, 0x01, 0x11, 0x50, 0xff, 0xf4, 0xa4, 0x00 };
|
||||
unsigned char c2[200];
|
||||
int pos = 0, pos2 = 0, i = 0;
|
||||
|
||||
printf("Testing GCR on: %s \n", c);
|
||||
|
||||
gcr_init();
|
||||
for (i = 0; i < sizeof(c); i++) {
|
||||
gcr_encode(c[i]);
|
||||
while(gcr_get_encoded(&c2[pos])) {
|
||||
printf("%02x=>%02x ", c[i], c2[pos]);
|
||||
pos++;
|
||||
}
|
||||
}
|
||||
printf("\n");
|
||||
printf("Encoded result %d chars (from %d) \n", pos, i);
|
||||
gcr_init();
|
||||
for (i = 0; i < pos; i++) {
|
||||
gcr_decode(c2[i]);
|
||||
if(!gcr_valid()) {
|
||||
printf("GCR: not valid\n");
|
||||
}
|
||||
while(gcr_get_decoded(&c[pos2])) {
|
||||
pos2++;
|
||||
}
|
||||
}
|
||||
printf("GCR: %s\n",c);
|
||||
}
|
||||
*/
|
||||
/*
|
||||
* Copyright (c) 2006, Swedish Institute of Computer Science
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* This file is part of the Contiki operating system.
|
||||
*
|
||||
* @(#)$Id: gcr.c,v 1.2 2011/01/07 11:55:36 nifi Exp $
|
||||
*/
|
||||
|
||||
/**
|
||||
* \file
|
||||
* Implementation of GCR coding/decoding
|
||||
* \author
|
||||
* Joakim Eriksson <joakime@sics.se>
|
||||
*
|
||||
*/
|
||||
|
||||
/* GCR conversion table - used for converting ordinary byte to 10-bits */
|
||||
/* (or 4 bits to 5) */
|
||||
static const unsigned char GCR_encode[16] = {
|
||||
0x0a, 0x0b, 0x12, 0x13,
|
||||
0x0e, 0x0f, 0x16, 0x17,
|
||||
0x09, 0x19, 0x1a, 0x1b,
|
||||
0x0d, 0x1d, 0x1e, 0x15
|
||||
};
|
||||
|
||||
/* 5 bits > 4 bits (0xff => invalid) */
|
||||
static const unsigned char GCR_decode[32] = {
|
||||
0xff, 0xff, 0xff, 0xff, // 0 - 3invalid...
|
||||
0xff, 0xff, 0xff, 0xff, // 4 - 7 invalid...
|
||||
0xff, 0x08, 0x00, 0x01, // 8 invalid... 9 = 8, a = 0, b = 1
|
||||
0xff, 0x0c, 0x04, 0x05, // c invalid... d = c, e = 4, f = 5
|
||||
|
||||
0xff, 0xff, 0x02, 0x03, // 10-11 invalid...
|
||||
0xff, 0x0f, 0x06, 0x07, // 14 invalid...
|
||||
0xff, 0x09, 0x0a, 0x0b, // 18 invalid...
|
||||
0xff, 0x0d, 0x0e, 0xff, // 1c, 1f invalid...
|
||||
};
|
||||
|
||||
static unsigned char gcr_bits = 0;
|
||||
static unsigned short gcr_val = 0;
|
||||
|
||||
/* Call before starting encoding or decoding */
|
||||
void gcr_init() {
|
||||
gcr_val = 0;
|
||||
gcr_bits = 0;
|
||||
}
|
||||
|
||||
/* Use this to check if encoding / decoding is complete for now */
|
||||
unsigned char gcr_finished() {
|
||||
return gcr_bits == 0;
|
||||
}
|
||||
|
||||
/* Encode one character - and store in bits - get encoded with get_encoded */
|
||||
void gcr_encode(unsigned char raw_data) {
|
||||
gcr_val |=
|
||||
((GCR_encode[raw_data >> 4u] << 5u ) |
|
||||
GCR_encode[raw_data & 0xf]) << gcr_bits;
|
||||
gcr_bits += 10;
|
||||
}
|
||||
|
||||
/* Gets the current char of the encoded stream */
|
||||
unsigned char gcr_get_encoded(unsigned char *raw_data) {
|
||||
if (gcr_bits >= 8) {
|
||||
*raw_data = (unsigned char) (gcr_val & 0xff);
|
||||
gcr_val = gcr_val >> 8u;
|
||||
gcr_bits = gcr_bits - 8;
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Decode one char - result can be get from get_decoded */
|
||||
void gcr_decode(unsigned char gcr_data) {
|
||||
gcr_val |= gcr_data << gcr_bits;
|
||||
gcr_bits += 8;
|
||||
}
|
||||
|
||||
/* check if the current decoded stream is correct */
|
||||
unsigned char gcr_valid() {
|
||||
if (gcr_bits >= 10) {
|
||||
unsigned short val = gcr_val & 0x3ff;
|
||||
if ((GCR_decode[val >> 5u] << 4u) == 0xff ||
|
||||
(GCR_decode[val & 0x1f]) == 0xff) {
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* gets the decoded stream - if any char is available */
|
||||
unsigned char gcr_get_decoded(unsigned char *raw_data) {
|
||||
if (gcr_bits >= 10) {
|
||||
unsigned short val = gcr_val & 0x3ff;
|
||||
*raw_data = (unsigned char) ((GCR_decode[val >> 5] << 4) |
|
||||
(GCR_decode[val & 0x1f]));
|
||||
gcr_val = gcr_val >> 10;
|
||||
gcr_bits = gcr_bits - 10;
|
||||
return 1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
static const char encoded[] = {
|
||||
0x4a, 0x25, 0xa5, 0xfc, 0x96, 0xff, 0xff, 0xb5, 0xd4, 0x5a, 0xea, 0xff, 0xff, 0xaa, 0xd3, 0xff
|
||||
};
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
// unsigned char c[] = "testing gcr 1 2 3 4 5 6...";
|
||||
unsigned char c[] = { 0, 8, 0xe0, 0x2b, 0xac, 0x10, 0x01, 0x11, 0x50, 0xff, 0xf4, 0xa4, 0x00 };
|
||||
unsigned char c2[200];
|
||||
int pos = 0, pos2 = 0, i = 0;
|
||||
|
||||
printf("Testing GCR on: %s \n", c);
|
||||
|
||||
gcr_init();
|
||||
for (i = 0; i < sizeof(c); i++) {
|
||||
gcr_encode(c[i]);
|
||||
while(gcr_get_encoded(&c2[pos])) {
|
||||
printf("%02x=>%02x ", c[i], c2[pos]);
|
||||
pos++;
|
||||
}
|
||||
}
|
||||
printf("\n");
|
||||
printf("Encoded result %d chars (from %d) \n", pos, i);
|
||||
gcr_init();
|
||||
for (i = 0; i < pos; i++) {
|
||||
gcr_decode(c2[i]);
|
||||
if(!gcr_valid()) {
|
||||
printf("GCR: not valid\n");
|
||||
}
|
||||
while(gcr_get_decoded(&c[pos2])) {
|
||||
pos2++;
|
||||
}
|
||||
}
|
||||
printf("GCR: %s\n",c);
|
||||
}
|
||||
*/
|
||||
|
||||
Loading…
Reference in New Issue
Block a user