#include <stdio.h>
#include <string.h>
+#include <stdint.h>
#include <sys/socket.h> /* for sa_family_t */
#include <linux/can.h>
+#include <linux/can/error.h>
#include "lib.h"
#define DATA_SEPERATOR '.'
#define MAX_CANFRAME "12345678#01.23.45.67.89.AB.CD.EF"
-#define MAX_LONG_CANFRAME "12345678 [8] 10101010 10101010 10101010 10101010 10101010 10101010 10101010 10101010 '........'"
+#define MAX_LONG_CANFRAME_SIZE 256
unsigned char asc2nibble(char c) {
if (len < 4)
return 1;
- if (!((cs[3] == CANID_DELIM) || (cs[8] == CANID_DELIM)))
- return 1;
+ if (cs[3] == CANID_DELIM) { /* 3 digits */
- if (cs[8] == CANID_DELIM) { /* 8 digits */
+ idx = 4;
+ for (i=0; i<3; i++){
+ if ((tmp = asc2nibble(cs[i])) > 0x0F)
+ return 1;
+ cf->can_id |= (tmp << (2-i)*4);
+ }
+
+ } else if (cs[8] == CANID_DELIM) { /* 8 digits */
idx = 9;
for (i=0; i<8; i++){
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);
- }
- }
+ } else
+ return 1;
if((cs[idx] == 'R') || (cs[idx] == 'r')){ /* RTR frame */
cf->can_id |= CAN_RTR_FLAG;
/* documentation see lib.h */
int i,offset;
+ int dlc = (cf->can_dlc > 8)? 8 : cf->can_dlc;
if (cf->can_id & CAN_ERR_FLAG) {
sprintf(buf, "%08X#", cf->can_id & (CAN_ERR_MASK|CAN_ERR_FLAG));
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++) {
+ for (i = 0; i < dlc; i++) {
sprintf(buf+offset, "%02X", cf->data[i]);
offset += 2;
- if (sep && (i+1 < cf->can_dlc))
+ if (sep && (i+1 < dlc))
sprintf(buf+offset++, ".");
}
void fprint_long_canframe(FILE *stream , struct can_frame *cf, char *eol, int view) {
/* documentation see lib.h */
- char buf[sizeof(MAX_LONG_CANFRAME)+1]; /* max length */
+ char buf[MAX_LONG_CANFRAME_SIZE];
sprint_long_canframe(buf, cf, view);
fprintf(stream, "%s", buf);
+ if ((view & CANLIB_VIEW_ERROR) && (cf->can_id & CAN_ERR_FLAG)) {
+ snprintf_can_error_frame(buf, sizeof(buf), cf, "\n\t");
+ fprintf(stream, "\n\t%s", buf);
+ }
if (eol)
fprintf(stream, "%s", eol);
}
/* documentation see lib.h */
int i, j, dlen, offset;
+ int dlc = (cf->can_dlc > 8)? 8 : cf->can_dlc;
if (cf->can_id & CAN_ERR_FLAG) {
sprintf(buf, "%8X ", cf->can_id & (CAN_ERR_MASK|CAN_ERR_FLAG));
offset = 5;
}
- sprintf(buf+offset, "[%d]", cf->can_dlc);
+ sprintf(buf+offset, "[%d]", dlc);
offset += 3;
if (cf->can_id & CAN_RTR_FLAG) { /* there are no ERR frames with RTR */
if (view & CANLIB_VIEW_BINARY) {
dlen = 9; /* _10101010 */
- for (i = 0; i < cf->can_dlc; i++) {
- buf[offset++] = ' ';
- for (j = 7; j >= 0; j--)
- buf[offset++] = (1<<j & cf->data[i])?'1':'0';
+ if (view & CANLIB_VIEW_SWAP) {
+ for (i = dlc - 1; i >= 0; i--) {
+ buf[offset++] = (i == dlc-1)?' ':SWAP_DELIMITER;
+ for (j = 7; j >= 0; j--)
+ buf[offset++] = (1<<j & cf->data[i])?'1':'0';
+ }
+ } else {
+ for (i = 0; i < dlc; i++) {
+ buf[offset++] = ' ';
+ for (j = 7; j >= 0; j--)
+ buf[offset++] = (1<<j & cf->data[i])?'1':'0';
+ }
}
buf[offset] = 0; /* terminate string */
} else {
dlen = 3; /* _AA */
- for (i = 0; i < cf->can_dlc; i++) {
- sprintf(buf+offset, " %02X", cf->data[i]);
- offset += dlen;
+ if (view & CANLIB_VIEW_SWAP) {
+ for (i = dlc - 1; i >= 0; i--) {
+ sprintf(buf+offset, "%c%02X",
+ (i == dlc-1)?' ':SWAP_DELIMITER,
+ cf->data[i]);
+ offset += dlen;
+ }
+ } else {
+ for (i = 0; i < dlc; i++) {
+ sprintf(buf+offset, " %02X", cf->data[i]);
+ offset += dlen;
+ }
}
}
if (cf->can_id & CAN_ERR_FLAG)
- sprintf(buf+offset, "%*s", dlen*(8-cf->can_dlc)+13, "ERRORFRAME");
+ sprintf(buf+offset, "%*s", dlen*(8-dlc)+13, "ERRORFRAME");
else if (view & CANLIB_VIEW_ASCII) {
- j = dlen*(8-cf->can_dlc)+4;
- sprintf(buf+offset, "%*s", j, "'");
- offset += j;
-
- 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, "'");
- }
+ j = dlen*(8-dlc)+4;
+ if (view & CANLIB_VIEW_SWAP) {
+ sprintf(buf+offset, "%*s", j, "`");
+ offset += j;
+ for (i = dlc - 1; i >= 0; i--)
+ if ((cf->data[i] > 0x1F) && (cf->data[i] < 0x7F))
+ buf[offset++] = cf->data[i];
+ else
+ buf[offset++] = '.';
+
+ sprintf(buf+offset, "`");
+ } else {
+ sprintf(buf+offset, "%*s", j, "'");
+ offset += j;
+ for (i = 0; i < dlc; i++)
+ if ((cf->data[i] > 0x1F) && (cf->data[i] < 0x7F))
+ buf[offset++] = cf->data[i];
+ else
+ buf[offset++] = '.';
+
+ sprintf(buf+offset, "'");
+ }
+ }
+}
+
+static const char *error_classes[] = {
+ "tx-timeout",
+ "lost-arbitration",
+ "controller-problem",
+ "protocol-violation",
+ "transceiver-status",
+ "no-acknowledgement-on-tx",
+ "bus-off",
+ "bus-error",
+ "restarted-after-bus-off",
+};
+
+static const char *controller_problems[] = {
+ "rx-overflow",
+ "tx-overflow",
+ "rx-error-warning",
+ "tx-error-warning",
+ "rx-error-passive",
+ "tx-error-passive",
+};
+
+static const char *protocol_violation_types[] = {
+ "single-bit-error",
+ "frame-format-error",
+ "bit-stuffing-error",
+ "tx-dominant-bit-error",
+ "tx-recessive-bit-error",
+ "bus-overload",
+ "back-to-error-active",
+ "error-on-tx",
+};
+
+static const char *protocol_violation_locations[] = {
+ "unspecified",
+ "unspecified",
+ "id.28-to-id.28",
+ "start-of-frame",
+ "bit-srtr",
+ "bit-ide",
+ "id.20-to-id.18",
+ "id.17-to-id.13",
+ "crc-sequence",
+ "reserved-bit-0",
+ "data-field",
+ "data-length-code",
+ "bit-rtr",
+ "reserved-bit-1",
+ "id.4-to-id.0",
+ "id.12-to-id.5",
+ "unspecified",
+ "active-error-flag",
+ "intermission",
+ "tolerate-dominant-bits",
+ "unspecified",
+ "unspecified",
+ "passive-error-flag",
+ "error-delimiter",
+ "crc-delimiter",
+ "acknowledge-slot",
+ "end-of-frame",
+ "acknowledge-delimiter",
+ "overload-flag",
+ "unspecified",
+ "unspecified",
+ "unspecified",
+};
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+#endif
+
+static int snprintf_error_data(char *buf, size_t len, uint8_t err,
+ const char **arr, int arr_len)
+{
+ int i, n = 0, count = 0;
+
+ if (!err || len <= 0)
+ return 0;
+
+ for (i = 0; i < arr_len; i++) {
+ if (err & (1 << i)) {
+ if (count)
+ n += snprintf(buf + n, len - n, ",");
+ n += snprintf(buf + n, len - n, "%s", arr[i]);
+ count++;
+ }
+ }
+
+ return n;
+}
+
+static int snprintf_error_lostarb(char *buf, size_t len, struct can_frame *cf)
+{
+ if (len <= 0)
+ return 0;
+ return snprintf(buf, len, "{at bit %d}", cf->data[0]);
+}
+
+static int snprintf_error_ctrl(char *buf, size_t len, struct can_frame *cf)
+{
+ int n = 0;
+
+ if (len <= 0)
+ return 0;
+
+ n += snprintf(buf + n, len - n, "{");
+ n += snprintf_error_data(buf + n, len - n, cf->data[1],
+ controller_problems,
+ ARRAY_SIZE(controller_problems));
+ n += snprintf(buf + n, len - n, "}");
+
+ return n;
+}
+
+static int snprintf_error_prot(char *buf, size_t len, struct can_frame *cf)
+{
+ int n = 0;
+
+ if (len <= 0)
+ return 0;
+
+ n += snprintf(buf + n, len - n, "{{");
+ n += snprintf_error_data(buf + n, len - n, cf->data[2],
+ protocol_violation_types,
+ ARRAY_SIZE(protocol_violation_types));
+ n += snprintf(buf + n, len - n, "}{");
+ if (cf->data[3] > 0 &&
+ cf->data[3] < ARRAY_SIZE(protocol_violation_locations))
+ n += snprintf(buf + n, len - n, "%s",
+ protocol_violation_locations[cf->data[3]]);
+ n += snprintf(buf + n, len - n, "}}");
+
+ return n;
}
+void snprintf_can_error_frame(char *buf, size_t len, struct can_frame *cf,
+ char* sep)
+{
+ canid_t class, mask;
+ int i, n = 0, classes = 0;
+ char *defsep = ",";
+
+ if (!(cf->can_id & CAN_ERR_FLAG))
+ return;
+
+ class = cf->can_id & CAN_EFF_MASK;
+ if (class > (1 << ARRAY_SIZE(error_classes))) {
+ fprintf(stderr, "Error class %#x is invalid\n", class);
+ return;
+ }
+
+ if (!sep)
+ sep = defsep;
+
+ for (i = 0; i < ARRAY_SIZE(error_classes); i++) {
+ mask = 1 << i;
+ if (class & mask) {
+ if (classes)
+ n += snprintf(buf + n, len - n, "%s", sep);
+ n += snprintf(buf + n, len - n, "%s", error_classes[i]);
+ if (mask == CAN_ERR_LOSTARB)
+ n += snprintf_error_lostarb(buf + n, len - n,
+ cf);
+ if (mask == CAN_ERR_CRTL)
+ n += snprintf_error_ctrl(buf + n, len - n, cf);
+ if (mask == CAN_ERR_PROT)
+ n += snprintf_error_prot(buf + n, len - n, cf);
+ classes++;
+ }
+ }
+
+ if (cf->data[6] || cf->data[7]) {
+ n += snprintf(buf + n, len - n, "%s", sep);
+ n += snprintf(buf + n, len - n, "error-counter-tx-rx{{%d}{%d}}",
+ cf->data[6], cf->data[7]);
+ }
+}
projects / socketcan-devel.git / blobdiff