- bool ShowWaitCycles = false;
- char param = param_getchar(Cmd, 0);
-
- if (param == 'h' || (param != 0 && param != 'f')) {
- PrintAndLog("List data in trace buffer.");
- PrintAndLog("Usage: hf 14a list [f]");
- PrintAndLog("f - show frame delay times as well");
- PrintAndLog("sample: hf 14a list f");
- return 0;
- }
-
- if (param == 'f') {
- ShowWaitCycles = true;
- }
-
- uint8_t got[1920];
- GetFromBigBuf(got,sizeof(got),0);
- WaitForResponse(CMD_ACK,NULL);
-
- PrintAndLog("Recorded Activity");
- PrintAndLog("");
- PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer");
- PrintAndLog("All times are in carrier periods (1/13.56Mhz)");
- PrintAndLog("");
- PrintAndLog(" Start | End | Src | Data");
- PrintAndLog("-----------|-----------|-----|--------");
-
- int i = 0;
- uint32_t first_timestamp = 0;
- uint32_t timestamp;
- uint32_t EndOfTransmissionTimestamp = 0;
-
- for (;;) {
- if(i >= 1900) {
- break;
- }
-
- bool isResponse;
- timestamp = *((uint32_t *)(got+i));
- if (timestamp & 0x80000000) {
- timestamp &= 0x7fffffff;
- isResponse = true;
- } else {
- isResponse = false;
- }
-
- if(i==0) {
- first_timestamp = timestamp;
- }
-
- int parityBits = *((uint32_t *)(got+i+4));
-
- int len = got[i+8];
-
- if (len > 100) {
- break;
- }
- if (i + len >= 1900) {
- break;
- }
-
- uint8_t *frame = (got+i+9);
-
- // Break and stick with current result if buffer was not completely full
- if (frame[0] == 0x44 && frame[1] == 0x44 && frame[2] == 0x44 && frame[3] == 0x44) break;
-
- char line[1000] = "";
- int j;
- if (len) {
- for (j = 0; j < len; j++) {
- int oddparity = 0x01;
- int k;
-
- for (k=0;k<8;k++) {
- oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
- }
-
- //if((parityBits >> (len - j - 1)) & 0x01) {
- if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
- sprintf(line+(j*4), "%02x! ", frame[j]);
- } else {
- sprintf(line+(j*4), "%02x ", frame[j]);
- }
- }
- } else {
- if (ShowWaitCycles) {
- uint32_t next_timestamp = (*((uint32_t *)(got+i+9))) & 0x7fffffff;
- sprintf(line, "fdt (Frame Delay Time): %d", (next_timestamp - timestamp));
- }
- }
-
- char *crc;
- crc = "";
- if (len > 2) {
- uint8_t b1, b2;
- for (j = 0; j < (len - 1); j++) {
- // gives problems... search for the reason..
- /*if(frame[j] == 0xAA) {
- switch(frame[j+1]) {
- case 0x01:
- crc = "[1] Two drops close after each other";
- break;
- case 0x02:
- crc = "[2] Potential SOC with a drop in second half of bitperiod";
- break;
- case 0x03:
- crc = "[3] Segment Z after segment X is not possible";
- break;
- case 0x04:
- crc = "[4] Parity bit of a fully received byte was wrong";
- break;
- default:
- crc = "[?] Unknown error";
- break;
- }
- break;
- }*/
- }
-
- if (strlen(crc)==0) {
- ComputeCrc14443(CRC_14443_A, frame, len-2, &b1, &b2);
- if (b1 != frame[len-2] || b2 != frame[len-1]) {
- crc = (isResponse & (len < 6)) ? "" : " !crc";
- } else {
- crc = "";
- }
- }
- } else {
- crc = ""; // SHORT
- }
-
- i += (len + 9);
-
- EndOfTransmissionTimestamp = (*((uint32_t *)(got+i))) & 0x7fffffff;
-
- if (!ShowWaitCycles) i += 9;
-
- PrintAndLog(" %9d | %9d | %s | %s %s",
- (timestamp - first_timestamp),
- (EndOfTransmissionTimestamp - first_timestamp),
- (len?(isResponse ? "Tag" : "Rdr"):" "),
- line, crc);
-
- }
projects / proxmark3-svn / blobdiff