- uint8_t got[3000];
- GetFromBigBuf(got,sizeof(got),0);
- WaitForResponse(CMD_ACK,NULL);
-
- char filename[256];
- FILE* pf = NULL;
-
- if (param_getstr(Cmd,0,filename)) {
- if (strlen(filename) > 0) {
- if ((pf = fopen(filename,"w")) == NULL) {
- PrintAndLog("Error: Could not open file [%s]",filename);
- return 1;
- }
- }
- }
-
- PrintAndLog("recorded activity:");
- PrintAndLog(" ETU :rssi: who bytes");
- PrintAndLog("---------+----+----+-----------");
-
- int i = 0;
- int prev = -1;
-
- for (;;) {
- if(i >= 1900) {
- break;
- }
-
- bool isResponse;
- int timestamp = *((uint32_t *)(got+i));
- if (timestamp & 0x80000000) {
- timestamp &= 0x7fffffff;
- isResponse = 1;
- } else {
- isResponse = 0;
- }
-
- int metric = 0;
- int parityBits = *((uint32_t *)(got+i+4));
- // 4 bytes of additional information...
- // maximum of 32 additional parity bit information
- //
- // TODO:
- // at each quarter bit period we can send power level (16 levels)
- // or each half bit period in 256 levels.
-
- 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[3] == 0x44) { break; }
-
- char line[1000] = "";
- int j;
- 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]);
- }
- }
-
- char metricString[100];
- if (isResponse) {
- sprintf(metricString, "%3d", metric);
- } else {
- strcpy(metricString, " ");
- }
-
- PrintAndLog(" +%7d: %s: %s %s",
- (prev < 0 ? 0 : (timestamp - prev)),
- metricString,
- (isResponse ? "TAG" : " "),
- line);
-
-
- if (pf) {
- fprintf(pf," +%7d: %s: %s %s %s",
- (prev < 0 ? 0 : (timestamp - prev)),
- metricString,
- (isResponse ? "TAG" : " "),
- line,
- "\n");
- }
+ uint8_t *got = malloc(USB_CMD_DATA_SIZE);
+
+ // Query for the actual size of the trace
+ UsbCommand response;
+ GetFromBigBuf(got, USB_CMD_DATA_SIZE, 0);
+ WaitForResponse(CMD_ACK, &response);
+ uint16_t traceLen = response.arg[2];
+ if (traceLen > USB_CMD_DATA_SIZE) {
+ uint8_t *p = realloc(got, traceLen);
+ if (p == NULL) {
+ PrintAndLog("Cannot allocate memory for trace");
+ free(got);
+ return 2;
+ }
+ got = p;
+ GetFromBigBuf(got, traceLen, 0);
+ WaitForResponse(CMD_ACK,NULL);
+ }