-       start_index = ((start_index/12)*12);
-    int n = (((bytes/4)/48)*48) + start_index;
-    /*
-     if (n % 48 != 0) {
-     PrintAndLog("bad len in GetFromBigBuf");
-     return;
-     }
-     */
-    for (int i = start_index; i < n; i += 12) {
-        UsbCommand c = {CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K, {i, 0, 0}};
-        SendCommand(&c);
-        WaitForResponse(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K);
-        memcpy(dest+(i*4), sample_buf, 48);
-    }
+  sample_buf = dest;
+  UsbCommand c = {CMD_DOWNLOAD_RAW_ADC_SAMPLES_125K, {start_index, bytes, 0}};
+  SendCommand(&c);