CHG: lowered the number of bytes collected for T55xxReadBlock. Was 12000 -> 7679

CHG: added some documentation about what arguments does.
CHG: 'data tune' - added flush after printf.

armsrc/appmain.c

@@ -1276,6 +1276,11 @@ void UsbPacketReceived(uint8_t *packet, int len)
 			size_t len = 0;
 			size_t startidx = c->arg[0];
 			uint8_t isok = FALSE;
+			// arg0 = startindex
+			// arg1 = length bytes to transfer
+			// arg2 = RFU
+			//Dbprintf("transfer to client parameters: %llu | %llu | %llu", c->arg[0], c->arg[1], c->arg[2]);
+			
 			for(size_t i = 0; i < c->arg[1]; i += USB_CMD_DATA_SIZE) {
 				len = MIN( (c->arg[1] - i), USB_CMD_DATA_SIZE);
 				isok = cmd_send(CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K, i, len, BigBuf_get_traceLen(), BigBuf + startidx + i, len);
@@ -1289,7 +1294,9 @@ void UsbPacketReceived(uint8_t *packet, int len)
 		}
 		case CMD_DOWNLOADED_SIM_SAMPLES_125K: {
 			// iceman; since changing fpga_bitstreams clears bigbuff, Its better to call it before.
-			// to be able to use this one for uploading data to device not only for LF, I use c->arg[1] 
+			// to be able to use this one for uploading data to device 
+			// arg1 = 0 upload for LF usage 
+			//        1 upload for HF usage
 			if ( c->arg[1] == 0 )
 				FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
 			else 

armsrc/lfops.c

@@ -1310,7 +1310,7 @@ void T55xxReadBlock(uint16_t arg0, uint8_t Block, uint32_t Pwd) {
 	TurnReadLFOn(READ_GAP);
 	
 	// Acquisition
-	doT55x7Acquisition(12000);
+	doT55x7Acquisition(7679);
 	
 	// Turn the field off
 	FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off

client/cmddata.c

@@ -2231,6 +2231,7 @@ int CmdTuneSamples(const char *Cmd)
 	while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING, &resp, 2000)) {
 		timeout++;
 		printf(".");
+		fflush(stdout);
 		if (timeout > 7) {
 			PrintAndLog("\nNo response from Proxmark. Aborting...");
 			return 1;

client/cmdlft55xx.c

@@ -1274,7 +1274,8 @@ int AquireData( uint8_t page, uint8_t block, bool pwdmode, uint32_t password ){
 		return 0;
 	}
 
-	uint8_t got[12288];
+	//uint8_t got[12288];
+	uint8_t got[7679];
 	GetFromBigBuf(got, sizeof(got), 0);
 	if ( !WaitForResponseTimeout(CMD_ACK, NULL, 8000) ) {
 		PrintAndLog("command execution time out");

client/cmdmain.c

@@ -192,9 +192,9 @@ void UsbCommandReceived(UsbCommand *UC)
 				printf("\r#db# %s", s);
 				fflush(stdout);
 			}
-			else 
+			else {
 				PrintAndLog("#db# %s", s);
-			
+			}
 			return;
 		} break;
 
@@ -204,7 +204,12 @@ void UsbCommandReceived(UsbCommand *UC)
 		}
 		case CMD_DOWNLOADED_RAW_ADC_SAMPLES_125K:
 		case CMD_DOWNLOADED_EML_BIGBUF: {
+			// sample_buf is a array pointer, located in data.c
+			// arg0 = offset in transfer. Startindex of this chunk
+			// arg1 = length bytes to transfer
+			// arg2 = bigbuff tracelength (?)
 			memcpy( sample_buf + (UC->arg[0]), UC->d.asBytes, UC->arg[1]);
+			//printf("DBG:: Download from device. chunk %llu | size %llu | tracelen:%llu \n", UC->arg[0], UC->arg[1], UC->arg[2]);
 			break;
 		}
 		default: {

common/lfdemod.c

@@ -602,10 +602,11 @@ int HIDdemodFSK(uint8_t *dest, size_t *size, uint32_t *hi2, uint32_t *hi, uint32
 		*hi2 = (*hi2<<1)|(*hi>>31);
 		*hi = (*hi<<1)|(*lo>>31);
 		//Then, shift in a 0 or one into low
+		*lo <<= 1;
 		if (dest[idx] && !dest[idx+1])  // 1 0
-			*lo=(*lo<<1)|1;
+			*lo |= 1;
 		else // 0 1
-			*lo=(*lo<<1)|0;
+			*lo |= 0;
 	}
 	return (int)startIdx;
 }