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Found 11 results

  1. 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
  2. Hello, I am currently working on refurbishing an existing programming bench using the Nexys Video™ FPGA Board Development Kit. Requirements for the test station require that I must use direct Tx/Rx RS232 data communication to the Artix-7 FPGA without the use of the FTDI FT232R USB-UART bridgeUART/Serial Converter Interface as described in the user manual. This used to be achieved with a now obselete Spartan-6 FPGA development board that provided a direct RS232 Serial Port on board. I cannot recall the exact model # for the retired board. Is there any way I can input RS232 data d
  3. Hi everyone, I am working on a project about drone. The project is sending and receiving data through UART and controlling the four brushless servo motors by getting these value for the speed of servo motors. I could find and combine codes for accomplishing the communication between fpga and the computer. However, I cannot make a relationship between coming data with servo motor. I get the coming UART data one by one by converting integer for duty cycle. Could you help me out this, how can I get the received data and send it to servo motors? Thanks in advance.
  4. Hello Digilent Community! I just finished putting the finishing touches on a UART demonstration project that you can find here. The project was originally intended to share a C++ class that could work with Verilator to prove that anyone's UART implementation was working. However, after I got into it, I realized the project had a lot of value that others might appreciate. As an example, consider this post by @martin16. Had he used any of the testing mechanisms listed below, he might have known which side of the RS232 port he was working with was at fault. The core contains a comp
  5. Hi, I tried to learn RS232 and created a project on Basys 3 with Pmod R232. The plan I would like to do is that whenever I set binary number at 8 switches on Basys 3, the data will be passed to the PC and I can see the character in the hyperterminal. At the same time, the LEDs for the "ON" switches with be turned on. I have successfully generated the bitstream file but it doesn't seems function. Include the Verilog code for transmitter, receiver and top modules. It will be great if someone can give hints to let me finish this project. P.S. I have used the logic from Tr
  6. Hi! I've got an ARTY board and I find the USB connection incredible useful, as it allows to use only one connection to program the FPGA through JTAG while simultaneously act as an USB to serial converter. So, I also bought a JTAG-SMT2-NC to fit into a custom board and it's a very convenient way to program my FPGA, but... is it possible for it to act as the module that fits on the ARTY, and make it be recognized by the PC as a USB-serial converter, using its GPIO pins as the interface with the FPGA, as the ARTY does? That would be really great, but I think it's not possibl
  7. I've been beavering away on a large project, but ended up thinking about how small a Serial TX module could be. While out splitting firewood stumbled over the idea that takes it down top 12 LUTs and 11 flip-flops library IEEE; use IEEE.STD_LOGIC_1164.ALL; entity tiny_rs232_tx is Port ( clk : in STD_LOGIC; bit_tick : in STD_LOGIC; data : in STD_LOGIC_VECTOR(7 downto 0); data_enable : in STD_LOGIC; tx : out STD_LOGIC := '1'; busy : out STD_LOGIC ); end tiny_rs232_tx; architecture Behavioral of
  8. I was looking at the PmodUSBUART, PmodRS232, PmodRS232X and the Digilent Pmod Interface specification and need some clarifications The PmodUSBUART and PmodRS232X uses the Type 4 Pinout and the PmodRS232 uses the Type 3 Pinout. The table pinout on the Pmod Interface Specification is for the Host for Type 3 and Type 4 UARTs. Can someone verify that my assumptions are ok?
  9. The Digilent RS232 UART reference component (downloads found on the PmodRS232 and Nexys2 pages, at least), does not do what many (including myself) might expect. If one looks at the documentation, one can see on page 4 that it expects to see 8 data bits PLUS a parity bit. That is quite unusual - most devices sending data over RS232 send a TOTAL of 8 bits (not including the stop and start bits) -- either 7 bits plus parity or 8 bits with no parity. Now, if one doesn't bother to check the parity, and does not send characters one right after the other, or if one includes two stop bits (
  10. Hii.. I am a beginner and presently I am working on NEXYS 3 FPGA board, I am trying to communicate NEXYS 3 with my computer using PMOD NIC 100. My doubt is how and by using which Protocol can I interface my PMOD NIC 100..?? can it be interfaced by RS232 since I have to transmit temperature data only (I am using PMOD TMP2 for that) Is it a proper way to communicate it..??..Or should I use any other protocol..?? Kindly Help...
  11. Hi, Somebody was after a way to send the input state of FPGA pins through to a host/PC for logging, so I knocked a quick hack up for them. http://hamsterworks....ex.php/Log_Pins It logs 11 pins as an ASCII string of ones and zeros, followed by a NL and CR, at 9600 baud using RS232, but that can be tweaked. It only sends an update when the state of the input changes. On the development board I'm using it is to an on-board USB virtual serial port, but you could also use a USB to TTL RS232 adapter. Maybe somebody may be able to make use of it as a debugging interface,..