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  1. I want to send 8 bit data from FPGA to PC, 9600 baudrate, 8 bit data, 1 start&stop bit, no parity. I did coded my Basys3 Fpga and connected to PC. By using Tera Term, wanted to see how it works out. But probably something big I'm missing out. I just wrote a transmitter code and somewhere I saw that some people used button&top modules too. Do I need them to see a 8-bit data's ASCII equivalent on my PC? How can I handle? library ieee; use ieee.std_logic_1164.all; entity rs232_omo is generic(clk_max:integer:=10400); --for baudrate port( clk : in std_logic; rst : in std_logic; start : in std_logic; input : in std_logic_vector(7 downto 0); done : out std_logic; output : out std_logic; showstates: out std_logic_vector(3 downto 0) ); end entity; architecture dataflow of rs232_omo is type states is (idle_state,start_state,send_state,stop_state); signal present_state,next_state : states; signal data,data_next : std_logic; begin process(clk,rst) variable count : integer range 0 to clk_max; variable index : integer range 0 to 10; begin if rst='1' then present_state<=idle_state; count:=0; data<='1'; elsif rising_edge(clk) then present_state<=next_state; count:=count+1; index:=index+1; data<=data_next; end if; end process; process(present_state,data,clk,rst,start) variable count : integer range 0 to clk_max; variable index : integer range 0 to 10; begin done<='0'; data_next<='1'; case present_state is when idle_state => showstates<="1000"; data_next<='1'; if start='1' and rst='0' then count:=count+1; if count=clk_max then next_state<=start_state; count:=0; end if; end if; when start_state => showstates<="0100"; data_next<='0'; count:=count+1; if count=clk_max then next_state<=send_state; count:=0; end if; when send_state => showstates<="0010"; count:=count+1; data_next<=input(index); if count=clk_max then if index=7 then index:=0; next_state<=stop_state; else index:=index+1; end if; count:=0; end if; when stop_state => showstates<="0001"; count:=count+1; if count=clk_max then next_state<=idle_state; done<='1'; count:=0; end if; end case; end process; output<=data; end architecture; Constraints: set_property PACKAGE_PIN V17 [get_ports {input[0]}] set_property PACKAGE_PIN V16 [get_ports {input[1]}] set_property PACKAGE_PIN W16 [get_ports {input[2]}] set_property PACKAGE_PIN W17 [get_ports {input[3]}] set_property PACKAGE_PIN W15 [get_ports {input[4]}] set_property PACKAGE_PIN V15 [get_ports {input[5]}] set_property PACKAGE_PIN V14 [get_ports {input[6]}] set_property PACKAGE_PIN W13 [get_ports {input[7]}] set_property IOSTANDARD LVCMOS33 [get_ports {input[7]}] set_property IOSTANDARD LVCMOS33 [get_ports {input[6]}] set_property IOSTANDARD LVCMOS33 [get_ports {input[5]}] set_property IOSTANDARD LVCMOS33 [get_ports {input[4]}] set_property IOSTANDARD LVCMOS33 [get_ports {input[3]}] set_property IOSTANDARD LVCMOS33 [get_ports {input[2]}] set_property IOSTANDARD LVCMOS33 [get_ports {input[1]}] set_property IOSTANDARD LVCMOS33 [get_ports {input[0]}] set_property IOSTANDARD LVCMOS33 [get_ports {showstates[3]}] set_property IOSTANDARD LVCMOS33 [get_ports {showstates[2]}] set_property IOSTANDARD LVCMOS33 [get_ports {showstates[1]}] set_property IOSTANDARD LVCMOS33 [get_ports {showstates[0]}] set_property PACKAGE_PIN L1 [get_ports {showstates[3]}] set_property PACKAGE_PIN P1 [get_ports {showstates[2]}] set_property PACKAGE_PIN N3 [get_ports {showstates[1]}] set_property PACKAGE_PIN P3 [get_ports {showstates[0]}] set_property PACKAGE_PIN W5 [get_ports clk] set_property IOSTANDARD LVCMOS33 [get_ports clk] set_property PACKAGE_PIN R2 [get_ports rst] set_property PACKAGE_PIN T1 [get_ports start] set_property IOSTANDARD LVCMOS33 [get_ports start] set_property IOSTANDARD LVCMOS33 [get_ports rst] set_property IOSTANDARD LVCMOS33 [get_ports done] set_property IOSTANDARD LVCMOS33 [get_ports output] set_property PACKAGE_PIN V3 [get_ports done] set_property PACKAGE_PIN V13 [get_ports output] My testbench simulation got attached. And on-board, apparently I stuck with 'idle_state'. For any kind of help, I thank y'all in advance.
  2. Hi Attila I am now the proud owner 3 Digilent Analog discover devices . ( 2x AD2 & 1x ADP3250 ) I have posted many post on the forum you can just make search for SIB in the forum and you will find all my posts. I would like you help to get this standard driver set up and running using the Java script engine of Waveforms . Below is the script that I want to get working and also is a waveforms work bench file also . This is after all the real power of the waveforms work bench and Analog discovery and professional devices Best wishes Simon --------------------------------------------------- function UART_data_collect() { // ------------------------------------------------------------------------------------------------------------ // // The aim of this script is to collect data from a UART serial stream from a embedded microprocessor board // and process the data from serial stream and display the result on the scope display // // ------------------------------------------------------------------------------------------------------------ // // Status // // 1) Code executes without error // 2) Code does not receive data from the UART serial port // even through the same ports are used manually to recieve data // from MCU using the manual protocol window with the same settings. // Steps to add A) Serial stream Protocol handler B) Scope display script // // ------------------------------------------------------------------------------------------------------------ clear(); // clear Output log if(!('Protocol' in this)) throw "Please open the Protocol instrument"; if(!('Scope' in this)) throw "Please open the Oscilloscope instrument"; Protocol.Mode.text = "UART"; // make sure UART tab is selected Protocol.UART.TX.value = 0; // Set up UART TX pin on Digilent AD2 :: DIO_0 Pin Protocol.UART.RX.value = 1; // Set up UART RX pin on Digilent AD2 :: DIO_1 Pin Protocol.UART.Bits.value=8; // Sets or gets the UART number of bits. Protocol.UART.Parity.text="None" ;// Sets or gets the parity setting: “None”, “Even”, “Odd”, “Mark (High)”, “Space (Low)”. Protocol.UART.Rate.value=234000; // Sets or gets the baud rate setting Protocol.config(); // apply configuration changes now Protocol.UART.Receiver(); // reset receiver - that is too start receiving data print(" UART Serial Bus initialised . Beware this is 3V3 Logic RS232 & Not True +/- 15V Rs232" + "\n\r" ); print(" UART TX line connect to AD2 DIO Port " + Protocol.UART.TX.value + "\n\r" ) ; print(" UART RX line connect to AD2 DIO Port " + Protocol.UART.RX.value + "\n\r" ) ; print("\n\r"+" UART initialisation complete " + "\n\r" ) ; Scope1.Time.Rate.value = 0.2; Scope1.single(); //Scope1.wait(); Scope1.Ref1.Clone(Scope1.Channel1); Scope1.Ref2.Clone(Scope1.Channel2); Scope1.Ref1.enable = true; Scope1.Ref2.enable = true; var rx = [] var rx_process = [] while(wait(0.2)) { // wait 0.2 sec and repeat while not stopped rx = rx.concat(Protocol.UART.ReceiveArray()) // append new words if(rx.shift()!=0x0A) { continue; } else { // read one of text ; rx_process=rx; rx=[]; Print( rx_process ); } // (rx.length>10) // if(rx.shift()==0xAA) continue; // if (rx[1] == 0xB5 && rx[2]== 0x11 && rx[7] == 0x09) // { // find the temperatures for displaying // // // print ("Temp 1: " + (rx[8]/2).toFixed(1) + " °C Temp 2: " + (rx[9]/2).toFixed(1) + " °C"); // // } // decimal data devided by 2 bring °Celsius // // = } // // ref // // // // notes // ===== // // 1. On the AD and AD2 the digital IO pins use LVCMOS 3V3 standard. These are supplied at 3.3V and have 200 Ohm PTC and clamping diodes to GND and to 3.3V for protection. // It will drive the digital wires at 3.3V and connecting 5V signals directly, without series resistor, it will sink about 10mA through the PTC and 3v3 diode. // As for noise, make sure to have ground connection between the two devices. // // 2. The WF/Protocol/UART uses the Stop length option only for transmission, this is not relevant for reception. // // 3. The UART TX filed lets you type in characters, hexadecimal values are not supported here. // Special chars you can copy/paste from other place or send from file. } //************************************************************ // Main program block : Start //************************************************************ clear(); // clear display screen print(" Script Main body start " + "\n\r "); UART_PID_data_collect(); //************************************************************ //************************************************************ // Main program block : Stop End ADP3250_UART_DATA_TO_SCOPE.dwf3work
  3. Disclaimer: I'm not an expert, just a student working on a school project. My zybo z7 board stopped showing up as /dev/ttyUSBx on my linux vm when connected using the UART microUSB port. On my windows host the com port does show up but I cannot open a connection with putty (115200 8n1), no error info or strange characters, just an error sound effect with no explanation. I tried everything on the pc side (driver reinstall, reboot, enable/disable port, different ports, different cables) but I suspect that it is the board not communicating. I use external power with WALL selected and booted from an sd card with a 500 mb fat32 partition with a boot and image file generated with xilinx petalinux which were not changed from when everything worked fine. There is also a 3gb ext4 partition where the fs is. The only thing that changed before the problem occured is that a few to-be-tested precompiled kernel modules where added to the ext fs in the home folder. Other students with the same set-up do not have this problem. I tried different sd cards and remade the partitions and redid the boot/image/fs generation but no success. When booting from QSPI the example program works fine so I don't think the board is broken (The serial com doesn't work in QSPI either but I don't know if it's supposed to). Maybe it needs some kind of factory reset? Is there a way to confirm if the microUSB port is working? Help will be appreciated. btw: upon startup I can see the RX led flickering but never the TX led
  4. I'm trying to use a VDMA tutorial. I have a ZED Board and I'm using VIVADO 2019.1 Every time I run the SDK, it shows nothing on the terminal. After that I tried to boot from the SD card and it also shows nothing. PS: I checked that I'm using the right terminal
  5. Dear Attila Please find enclosed the following . This took more than 4 hours to prepare all the documentation please treat as such. I am using the latest version of Digilent Waveforms and the latest Waveforms SDK. - Master Javascript driver for Digilent Analogue Discover AD2 which can be used inside Waveforms - SPI Setup , read & write & Initialise (1) . Status NOT Working . Needs Digilent Help to fix (%%) - I2C Setup , read & write & Initialise (2) . Status NOT Working . Needs Digilent Help to fix - UART Setup , read & write & Initialise(3) . ** - GPIO Setup, Set individual GPIO Pin Output States (4) Working - PSU Control, Set PSU voltage , turn on and off (5) Working - Python driver directly to control ON-SEMI CAT9532 using Digilent Analogue Discover AD2 & Digilent Waveforms ## Enclosed are all the attached scripts . ** Mostly likely works as driver details taken from working examples . See driver for while for web links reference. (%%) See previous efforts here to get it working &nbsp; &nbsp; I am trying to get the I2C driver function of the AD2 to work to drive a ON-SEMI CAT9532 LED driver. Set up , I have two Digilent Analogue Discover AD2 - Device 1 : Digilent AD2 (Device A) I2C driver source . A) Device is programed using Digilent Waveforms Javascript B) Direct control though Digilent Waveforms I2C Master interface C) Direct control though Digilent Waveforms I2C Master script interface D) Direct control Waveforms SDK & Python - Device 2 : Dilenet AD2 (Device B) as I2C spy device - Device 3 : TotalPhase Advark I2C/SPI professional I2C development tool Direct control & Programming by XML program script. I own (2) two Analogue Discovery devices. What worked Device 2 : It could work perfectly as a I2C spy mode device Device 3: Worked perfectly straight out of the box using the GUI interface. Took 20 mins to have working solution. This is professional I2C product that has been in the market for 10 years plus. What failed Device 1: Did not output the correct I2C packet no mater how it was programmed. Device 1 : Had 10K pull up resistor attached to the VCC 3V3 rail on the I2C: SDA & I2C:SCL & I2C:/RESET. Conclusion There seems to be general issue with the AD2 and getting it to work as driver for I2C and SPI . Which is a long term issue. I have spent a long time searching for all the small details to build up the driver set so that should work with Digilent Analogue Discover AD2 & Digilent Waveforms but if the hardware of the AD2 is not co-operative or the staff in Digilent not being supportive there is only so much I can do . Requested Help 1. Fix the Waveforms AD2 Javascript and Python Waveforms SDK so it works for SPI & I2C . There is something missing here, where it would be good to fix to improved your AD2 products for the whole community of AD2 users 2. Have a Digilent published AD2 drivers that work for SPI & I2C & UART & GPIO & PSU control for waveforms and waveforms SDK. So Attila the case is in your lap now .. Please put some effort in to fix it or show me how to fix it . I have the feeling your quite a skilled person. The result should be posted here as a product example : Background I am a electronic engineer with 20+ years development experience , I have have successfully used Digilent AD2 to design 3 products end to end and have been using it for quite a few years. I can program in Python , Microsoft and Javascript. I have personally purchased two pieces of AD2 out of my own money as feel they are such a good tool. I am committed to using the AD2 as I can see and experience that it is a super swiss army knife for use in a development of embedded electronics. I have also purchased a full profesional copy of National instruments Labview for use with AD2 but , have suspended learning to use labview until this I2C & SPI issue is resolved with the AD2 Digilent_AD2_Script_I2C_control_of_on-semi_CAT9532.js Digilent_AD2_Script_I2C_control_of_on-semi_CAT9532.dwf3work Digilent_AD2_Script_master.js
  6. I am trying to read 16bit integers sent to an Analog Discovery 2 over UART using the Protocol section in waveforms. The integers are sent in two bytes, 8 bit high byte then 8 bit low byte. When I set the RX to binary and the bits to 8, I can receive all the bytes correctly. When I set it to receive 16 bits, then errors occur because I am sending the data as two 8 bit messages. I want to be able to set RX to decimal and have the Protocol correctly convert two 8 bit transmissions to a single 16 bit decimal integer. Is this possible? Note: I cannot send a full 16 bit message, my microcontroller registers are limited to sending 8 bits at a time. I only want to do this so that I do not have to manually change the pairs of 8 bit values into 16 bit decimals. Example: Correct values in decimal: 2 64 128 2048 RX Binary, 8 bit: 00000000 00000010 00000000 01000000 00000000 10000000 00001000 00000000 RX Binary, 16 bit: 0000100100000000 0000000100000000 0000010000000001 0000000100001000 RX Decimal, 8 bit: 0 0 2 0 64 0 128 8 0 RX Decimal, 16 bit: 0 2304 256 1025 264
  7. So I am trying to program the FIFO and the UART on the Digilent USB104A7. I have the block design for the FIFO and UART. My next step is exporting it to Vitis and create the C/C++ code for it. The code should write/put data into the FIFO/UART and then display it into Tera Term. My question is that I have no idea where to start on the code. I am hoping that someone has this code already or can help me get started.
  8. Greetings, It is my first time here so I apologise for my mistakes, I started a new project where I am using Nexys 3 board with a Pmod GPS module. I found a UART receiver/transmitter on the internet I wanted to test it out. So I connected the receiver to the USB UART Rx pin, in order to send from Serial COM data and then transmit back to the Serial COM the data I have sent. When I am sending a character from the serial, I receive the same character from the UART transmitter so I think that both of the components work fine. When I am sending the character A, I receive back the character A. My next step is to connect to the receiver the Rx pin of the GPS to read NMEA Sentences. In the manual it says that the GPS works at 9600 baud rate so I tune the code for 9600 baud rate. I start reading the NMEA but the serial out is garbages(I will post a photo for the results). In the top.v module a connect the two modules like this: receiver R1(clk, reset, RxD, data); // RxD is the serial output from GPS and data is the 8 bit output from UART // transmitter receives the 8 bit data from the above module transmitter T1(clk, reset, transmit, data, TxD); // data is the input and we send the serialized data back to the Tera Term serial COM Is there any mistake with the connection? Is there a problem with the baud rate? Because I have tested all the baud rates available but I had no result. This is the result with 115200 baud rate And these are the results for 9600 baud
  9. Hi Guys I am trying to communicate with my Basys 3 board using USB-UART Bridge (Serial Port) and TeraTerm software but with no success. the weird part is that my device is recognizable by the Hardware Manager of Vivado and i can send the bitstream file successufly to program my FPGA but it is not showing up in the Hardware Manager of Win7 as seen in the attached cut out, so i dont know which COM Port is connetected to (if that's the case ) to be able to communicate with my board serially. I tried installing FTDI FT2232HQ USB-UART bridge driver from but didn't solve my problem. I will be more than grateful if you could help me sort this problem out Regards,
  10. Hello everyone, I have been trying to interface JTAG HS3 + JTAG UART with Adalm-Pluto using Xilinx vitis. I have exported .XSA file for zynq zc010 and tried to build an standalone application for simple Hello World program, but I'm facing an error while i try to debug as lauch hardware. I faced the following error. Error while launching program: fpga configuration failed. DONE PIN is not HIGH
  11. Recently I bought the CoolRunner II. I have a requirement to design UART controller and execute in that Board. But, I do not see any hardware interface for UART to that board. Could you please let me know what extra hardware I need to implement the RX, TX of the UART?
  12. Hello, I have a Zybo Z7-10 board, where the USB port does not seem to work at all anymore. Af far as I can remember I used it 2 Years ago and back then I could at least connect via JTAG to the Vivado HW Manager. But right now UART and JTAG do not work. I also tried the provided binary from this thread ( And even the "DONE" LED does not turn on. When I boot from QSPI and start the pre programmed demo, the board lights up and all the LEDs are flashing. So the board seems to work in general. But als during the QSPI demo there is no serial connection. On my host PC I don't see any message in dmesg as well. Is there anything that I could try to make it work or debug the issue further? Regards, Erik
  13. Hi everybody, I have an RFID module which can be controlled through an RS232 communication. I have tested it with a rs-232 connection with a PC and with an also with an usb-serial converter. I can connect with the RFID module an receive its data through a terminal emulator such as Teraterm, PuTTY, etc. The data are simply ASCII strings of codes. The module can also be configured by sending some ASCII commands, this is also tested. Now I want to do the same with a microcontroller (Arduino, Lopy, etc.), i.e., the microcontroller would act as the PC, getting data from the RFID reader. I have acquired a Pmod rs232. The needed connection with the RFID module is shown in the attached image. The RFID module comes with a rs232 wire with the connections made. I connected the d9-female side connector to the Pmod rs232 through a female-male gender like this one. My understanding is that the RFID module is a DTE since RXD and TXD are crossed as can be seen from the image. I have connected the Pmod rs232 to Arduino but I am not able to see anything. So the scheme is: Arduino UNO serial connection --> Pmod rs232 --> rs232 wire --> RFID module. The connection is 9600 8N1. I tried some code such as "if some character is received activate internal LED", or getting the data through a configured software UART and sending data through the USB and see them in serial monitor. So far with no success. I have some questions: 1- My understanding is that this Pmod rs232 is a max232. Can be any problem if I am doing a DTE-DCE connection or DTE-DTE? I seem to understand I just would have to connect the TTL pins accordingly. Pins 1 and 2 are unconnected. 2- How can I test the Pmod rs232 is working? This is connected to arduino 1, on the ttl side pin 6 is connected to 5V, pin 5 to gnd, and 4 and 3 to RX and TX respectively. 3- Is there any other way to check where the problem is? Any advice will be very welcome, I am stuck with this. Thanks in advance. PS: Long time ago I designed a PCB based on a PIC and a max232 and I could succesfully communicate with the RFID module.
  14. Hi, I'm using JTAG-SMT3-NC for JTAG and UART on a custom board. One of the boards has a very strange behavior when sending UART serial to the board. The character 'U' doesn't work, but all other keys work fine. Digging into it a bit further, I can see with a scope that the UART signal is incorrect for the letter 'U'. Please see attached scope plot. The upper (white) trace is when the 'U' key is pressed. Please compare this to the lower (yellow) is the 'A' key. Manually decoding, the 'A' waveform is correct (0x41), but the 'U' is incorrect (0xd5 instead of 0x55). A few other notes: Same behavior on two totally separate laptops (windows10) Same behavior at different baud rates. 115200 baud, 1N8 normally used. The 'U' key works as expected on ~10 other boards we used. Seems like something "happened" with this one. All other letters appear correct, and have their MSB cleared. Could anyone think what might cause this behavior? UART trace U vs A.bmp
  15. Hello All, I have a Coraz7-10 board where I have the uart working in send mode, but not in receive mode. The uart is configured to operate on an interrupt, and I'm using the xilinx example code. I have modified just slightly with some debug messages and the recv handler. Basically, I just want to "set" a signal when then handler occurs, and "reset" it in the main() loop. In the handler itself, I am just checking to see if the received data makes it there, confirming in debugger view of SDK with watch variables. However, rx data is never present. I'm new to Zync, so if there are any suggestion, much appreciated. Thanks. James
  16. Dear All, I have currently finished a PL program for signal processing and hardware controlling on the Zybo Z7010 board. Now, I want to ensure that some parameters can be easily modified by the user on a computer. Thus, I would like to use the USB -- micro-USB cable to instaure a communication between the user and the board. After some reading, I understand that I have to use the PS if I want to go through the micro-USB UART port (I have not yet used the PS in my project...). Hence, I need two things: - Instantiating the UART interface and writing the C/C++ script to ensure communication between User and PS - Creating a write/read connection between PS and PL to modify the parameters after reception by the PS. How should I proceed? As usual, feel free to ask for any further information. P.S. : Until now, I have used only Verilog and VHDL code to make the whole project run and am very uncomfortable with the "Block design" tool, so please be as specific as possible if block design is required (or faster/simpler...) Thank you very much,
  17. Hi, While there are many examples showing a basic Hello World using a Zynq UART, how do we read in data from the console using the same UART? Can anyone please guide me to the right example. I cudn't find one.
  18. Hi,guys! I'm currently working on how to send character"hello" to FPGA and then transmit "hello" back to my PC. But it seems I only can send some characters to my board and cannot receive the chracters back to PC. I wonder how to build my code in python to get the characters back to my PC. The attachment is my code(PYTHON) and result of runing. import serial ser = serial.Serial("com9",9600,timeout=0.25) print( print(ser.port) c=input("hello") b=ser.isOpen() ser.write(c.encode()) print(s) print(b) ser.close() Thanks, Dehao
  19. I am trying to use a DAQ to analyze I2C, SPI, and UART signals and then classify them, so they have to be the actual output signals from the Cora Z7 board. However, I am limited due to the project itself to use only the General Purpose I/O pins (IO0-IOA(IO42)). Is it possible to funnel the SPI, I2C, and UARt signals through these pins, or can you only use the specified pins, such as SDA/SCL, MISO/MOSI, or the USB UART bridge to do this?
  20. Hello everyone. I am learning UART communication with Nexys video board. Using only IP integrator, I succeed to 'turn on the LEDs with SWs' and now, I tried to use custom counter module by Verilog. module clock_divider( input clk, input [4:0]key, output reg [7:0]led ); //we will need one register to keep the clock count number; reg [22:0] count; always @(posedge clk) // judge the clk rise edge; if (key) begin // if the key has been pressed, if(count==0) begin // then count value flip over to zero, then make led on or off led <= ~led; // in the always loop, it needs to use registers end count <= count +1; // add the count value until it flips over to zero end else begin // if there is no key to be pressed, init the led to off state; led <=0; count <=1; end endmodule and I included this module in IP design. and the errors were like below. before this errors, I connected slight different module~IP wiring , and the result was ' synthesis & implement succeed, Bitstream failed' I'm looking for some information on google, but hard to find out my problem. can you give me some hints or solution? Thank you for your kind answers, ...
  21. i wanted to interface multiple digital serialiser with arty A7 35T board through pmod pins. And transmit the same data through UART. help me with the verilog code and other resource.
  22. The protocol options and features in WaveForms are great and do just what I need. The only issue it looks like Waveforms only supports one Protocol window, hence 1 UART. I need to monitor serial communications between two devices, which means I need two RX inputs. Is there a way to achieve this with the latest version?
  23. Is it possible to decode scope data using one of the "protocols"? I often need to analyze scope data as inverted UART data (e.g an RS-232 async serial signal).
  24. Hello, I’m having problems with sending large amount of data from ZYBO to a computer. For example, when I tried to send image data (640x480) at the maximum baud rate, the computer didn’t receive all data. But when baud rate was set to 256000, all data were received. It seems like UART buffer is overflowing. How to solve this problem? Best regards, Toni
  25. Can anyone suggest me how to program the UART/USB available in the ZYBO Z7 board and use it as a port to feed the data from the PC/SERVER ?