All Questions
10
questions
0
votes
1
answer
511
views
How do I synchronize my FPGA clock frequency with RS-232 transmission baud rate?
My FPGA Spartan 3E supports 50 Mhz clock via ocillators. Now I am using RS-232 cable connection to send output bits serially into my computer system using HyperTerminal/RealTerm.
However the baud ...
2
votes
3
answers
819
views
DE0-nano I/O with TTL cable
I'm currently working on a project about I/O with FPGA. I am using TTL-232R-3v3 cable for serial communication between my laptop and DE0-nano. I want to know if it is possible to send a signal on RX ...
- 23
6
votes
2
answers
866
views
Is anything besides rx and tx actually used in rs232 nowadays?
Whenever I come across a PIC or even a FPGA project that is communicating over the serial port with a PC; only Rx, Tx and power are connected on the 9 pin connector and the other pins/signals are ...
- 12k
1
vote
1
answer
2k
views
VHDL USB UART Problem
I've just described an UART transmitter and receiver in VHDL. In simulation everything seems to be fine. In FPGA, the loopback interface works well: I push a button, the transmitter sends data, the ...
- 133
5
votes
2
answers
1k
views
FPGA able to send data, but unable to receive data. (UART - RS232)
I have a DE0-nano FPGA board and I am trying to establish a serial connection with my PC.
I am using the RS232 implementation from here: http://www.fpga4fun.com/SerialInterface.html
I have tested ...
- 281
2
votes
3
answers
969
views
How to write to block memory?
I need to write 16x16 bit data to block memory. I am using RS232 to send data. To get 16 bit data, I send 2x8bit. Now, how can I write my data to the memory?
I have a write signal and 16 bit input ...
- 177
0
votes
2
answers
1k
views
How to implement Serial port RS-232 from 2.5V IO signal?
I am playing with a Xilinx Spartan-3A development (XC3S50A-TQ144C) and then I tried to implement RS-232 serial port by following the guide here: http://www.fpga4fun.com/SerialInterface.html
I bought ...
- 103
1
vote
1
answer
2k
views
Connecting RS232 output of Lattice XP2 Brevia Kit to PC USB (virtual COM port over USB) using a FTDI RS232RL based board
I have a Lattice Brevia XP2 Kit (the older one that came out in 2010/2011, and the not the newer version 2). The only PC connectivity it has is through serial (rs232). I have anetbook that does not ...
- 718
1
vote
1
answer
264
views
RS232 output always follow with an extra 0x0b
I have downloaded the minsoc from opencores and it comes with a microprocessor along with a rs232 cores. I have configure all the toolchains and download the design on my FPGA.
I run a simple ...
- 447
7
votes
2
answers
14k
views
Implement serial port on fpga (verilog)
I don't know if this belongs here or stackoverflow. I assume here as although verilog looks like software it's actually describing hardware connections?
I have a Spartan-3AN evaluation board and I'm ...
- 2,106