/* * $Id$ */ /* * lib.c - library for command line tools * * Copyright (c) 2002-2007 Volkswagen Group Electronic Research * 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 Volkswagen nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * Alternatively, provided that this notice is retained in full, this * software may be distributed under the terms of the GNU General * Public License ("GPL") version 2, in which case the provisions of the * GPL apply INSTEAD OF those given above. * * The provided data structures and external interfaces from this code * are not restricted to be used by modules with a GPL compatible license. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT * OWNER 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. * * Send feedback to * */ #include #include #include /* for sa_family_t */ #include #include "lib.h" #define CANID_DELIM '#' #define DATA_SEPERATOR '.' #define MAX_CANFRAME "12345678#01.23.45.67.89.AB.CD.EF" #define MAX_LONG_CANFRAME "12345678 [8] 01 23 45 67 89 AB CD EF '........'" static int asc2nibble(char c) { if ((c >= '0') && (c <= '9')) return c - '0'; if ((c >= 'A') && (c <= 'F')) return c - 'A' + 10; if ((c >= 'a') && (c <= 'f')) return c - 'a' + 10; return 16; /* error */ } int parse_canframe(char *cs, struct can_frame *cf) { /* documentation see lib.h */ int i, idx, dlc, len, tmp; len = strlen(cs); //printf("'%s' len %d\n", cs, len); memset(cf, 0, sizeof(*cf)); /* init CAN frame, e.g. DLC = 0 */ if (len < 4) return 1; if (!((cs[3] == CANID_DELIM) || (cs[8] == CANID_DELIM))) return 1; if (cs[8] == CANID_DELIM) { /* 8 digits */ idx = 9; for (i=0; i<8; i++){ if ((tmp = asc2nibble(cs[i])) > 0x0F) return 1; cf->can_id |= (tmp << (7-i)*4); } if (!(cf->can_id & CAN_ERR_FLAG)) /* 8 digits but no errorframe? */ cf->can_id |= CAN_EFF_FLAG; /* then it is an extended frame */ } else { /* 3 digits */ idx = 4; for (i=0; i<3; i++){ if ((tmp = asc2nibble(cs[i])) > 0x0F) return 1; cf->can_id |= (tmp << (2-i)*4); } } if((cs[idx] == 'R') || (cs[idx] == 'r')){ /* RTR frame */ cf->can_id |= CAN_RTR_FLAG; return 0; } for (i=0, dlc=0; i<8; i++){ if(cs[idx] == DATA_SEPERATOR) /* skip (optional) seperator */ idx++; if(idx >= len) /* end of string => end of data */ break; if ((tmp = asc2nibble(cs[idx++])) > 0x0F) return 1; cf->data[i] = (tmp << 4); if ((tmp = asc2nibble(cs[idx++])) > 0x0F) return 1; cf->data[i] |= tmp; dlc++; } cf->can_dlc = dlc; return 0; } void fprint_canframe(FILE *stream , struct can_frame *cf, char *eol, int sep) { /* documentation see lib.h */ char buf[sizeof(MAX_CANFRAME)+1]; /* max length */ sprint_canframe(buf, cf, sep); fprintf(stream, "%s", buf); if (eol) fprintf(stream, "%s", eol); } void sprint_canframe(char *buf , struct can_frame *cf, int sep) { /* documentation see lib.h */ int i,offset; if (cf->can_id & CAN_ERR_FLAG) { sprintf(buf, "%08X#", cf->can_id & (CAN_ERR_MASK|CAN_ERR_FLAG)); offset = 9; } else if (cf->can_id & CAN_EFF_FLAG) { sprintf(buf, "%08X#", cf->can_id & CAN_EFF_MASK); offset = 9; } else { sprintf(buf, "%03X#", cf->can_id & CAN_SFF_MASK); offset = 4; } if (cf->can_id & CAN_RTR_FLAG) /* there are no ERR frames with RTR */ sprintf(buf+offset, "R"); else for (i = 0; i < cf->can_dlc; i++) { sprintf(buf+offset, "%02X", cf->data[i]); offset += 2; if (sep && (i+1 < cf->can_dlc)) sprintf(buf+offset++, "."); } } void fprint_long_canframe(FILE *stream , struct can_frame *cf, char *eol, int ascii) { /* documentation see lib.h */ char buf[sizeof(MAX_LONG_CANFRAME)+1]; /* max length */ sprint_long_canframe(buf, cf, ascii); fprintf(stream, "%s", buf); if (eol) fprintf(stream, "%s", eol); } void sprint_long_canframe(char *buf , struct can_frame *cf, int ascii) { /* documentation see lib.h */ int i, offset; if (cf->can_id & CAN_ERR_FLAG) { sprintf(buf, "%8X ", cf->can_id & (CAN_ERR_MASK|CAN_ERR_FLAG)); offset = 10; } else if (cf->can_id & CAN_EFF_FLAG) { sprintf(buf, "%8X ", cf->can_id & CAN_EFF_MASK); offset = 10; } else { sprintf(buf, "%3X ", cf->can_id & CAN_SFF_MASK); offset = 5; } sprintf(buf+offset, "[%d]", cf->can_dlc); offset += 3; if (cf->can_id & CAN_RTR_FLAG) /* there are no ERR frames with RTR */ sprintf(buf+offset, " remote request"); else { for (i = 0; i < cf->can_dlc; i++) { sprintf(buf+offset, " %02X", cf->data[i]); offset += 3; } if (cf->can_id & CAN_ERR_FLAG) sprintf(buf+offset, "%*s", 3*(8-cf->can_dlc)+13, "ERRORFRAME"); else if (ascii) { sprintf(buf+offset, "%*s", 3*(8-cf->can_dlc)+4, "'"); offset += 3*(8-cf->can_dlc)+4; for (i = 0; i < cf->can_dlc; i++) if ((cf->data[i] > 0x1F) && (cf->data[i] < 0x7F)) buf[offset++] = cf->data[i]; else buf[offset++] = '.'; sprintf(buf+offset, "'"); } } }