I am new to FPGA and I am trying to get a working JTAG setup on Lattice iCE40 FPGA.
The board I'm using is from Olimex and has iCE40-HX8K FPGA.
I'm using urjtag as PC application and tried with DirtJTAG and USB Blaster clones as programmer (flashed onto STM32 BluePill board).
Olimex board didn't have populated pull-up resistors for JTAG so I soldered them (10k for TMS, TDI and TCK).
But the end result is the same: I cannot get jtag to recognize FPGA, the error is:
jtag> cable UsbBlaster
Connected to libftdi driver.
jtag> detect
warning: TDO seems to be stuck at 1
Checked pinout of the JTAG connector and it's correct. Multimeter tests show that there is no short-circuit, no solder bridges, pullups are correct value and working and as expceted.
Tried my setup with Altera FPGA board and it's working, it will detect the FPGA.
Also, tried eBay UsbBlaster clone and it's not working on iCE40, but works for Altera FPGA.
I can flash the external flash (with other tools and programmer), but I want to be able to use JTAG so I can flash onboard SRAM instead.
Any ideas/hints what might be wrong/what to try next?
iCE40 FPGAs do not have a JTAG interface.
Related
Is there an inbuilt or pre-existing feature I can use to accomplish Flashing a Cyclone IV's(EP4CE6E22C8) SROM(W25Q16BV) chip via its JTAG connection? Maybe some setting when compiling in Quartus to tell the FPGA "Hey flash this". Or a specific command for OpenOCD.
I saw that there are IP cores to manually flash the device, but I really do not want to go down that rabbit hole. Programming my own flasher sounds like an unnessisary hell at my experience level.
I hope this is good enough of a question, Ive been suffering with this for months, if you need any more information
INFO:
I have a W25Q16BV SROM chip connected directlyto a EP4CE6E22C8 in AS config mode. (Data input on SROM has single direct connection to FPGA's ASDO)
And to that FPGA I have a JTAG connection that connects to my computer via a J-Link adapter.
Controlling the J-Link adapter is OpenOCD that uploades compiled data(SVF file) provided by Quartus Prime.
The board is from an obscure seller, but it did come pre-flashed with an example program that starts upon every reset, so there must be some way they uploaded this.
Is there any way I can apply stimulus signals on my FPGA board from my PC itself, and view the output of hardware in any simulation software? I am working on Spartan 3A development board provided by numato labs (elbert V2)
https://numato.com/product/elbert-v2-spartan-3a-fpga-development-board/
It is a relatively small board with few peripherals, so the number of LEDs for output and push-buttons for input is quite less.
I am a newbie to FPGAs but have sound knowledge on verilog. Please help me out with this
Thanks
The board does not have an physical interface intended for use as wired connection/communications (no ethernet, no usb, no uart, etc) to a PC.
These are the easiest ways I can think of for an 'elbert V2' board to communicate with a PC:
The board has a micro SD connector to access files on the micro SD interface. Those files could be accessed by a Verilog simulation.
A USB to UART adapter could be used with the boards GPIO interface.
Here is an example:
https://www.amazon.com/3-3V-UART-Serial-Cable-TTL-232R-3V3/dp/B078GMQPLT
The cable provides 3.3V TTL and the board has 3.3V gpio ports so that is encouraging. Probably just need to connect 3 wires tx/rx/ground.
You would need to design or find UART RTL IP for the FPGA.
Designing the UART would be a good intermediate level Verilog project.
Use procom or similar software on the PC to communicate with the USB/UART com port on the PC and a file. Verilog simulations can access the data in the file.
I was working on a project using FPGA and Arduino, in which i have to show for how long my fpga device was OFF if it was so. I am using BASYS3 FPGA board. Once i switch off my FPGA the program is getting erased.
BASYS3 has quad spi FLASH onboard, fpga can be configured using stream stored there.
Follow instructions here: https://reference.digilentinc.com/learn/programmable-logic/tutorials/basys-3-programming-guide/start
I am new to arduino, I have an Arduino Uno and an Ethernet shield w5100.
I am trying an example sketche on the Ethernet library from this link.
Ethernet Tutorial from Arduino website
I used the DhcpAddressPrinter example sketch. but it returns Failed to configure Ethernet using DHCP on the serial monitor.
The Arduino is connected to the router with DHCP enable. My laptop is connected to the same router and was able to acquire IP with no problems.
Have you seen this thread:
https://forum.arduino.cc/index.php?topic=351477.15
unfortunately it requires use of a soldering iron....
I have confirmed myself: a cheap 'no-name' board I had exhibited the same problem you describe above. I bought one from "JayCar" (in Australia) and the same program rang perfectly.
The resistor on the cheap "no-name" board was the wrong value. Although the cheap and JayCar board looked almost identical, the resistor soldered on the JarCar board was a different resistance to the resistor soldered on the cheap board.
This causes the cheap board to not work reliably.
I am working with Sasebo GII board that has two FPGAs on it:
Xilinx Spartan and Xilinx Virtex5 (and the board has several separate JTAG interfaces for configuration of fpgas).
I am useing ISE 14.4 under Linux and I have some troubles to configure the Virtex 5 FPGA.
(no problems with Spartan).
I am using "Impact" to send the configuration files to FPGAs.
At the beginning Impact scans the board and finds Spartan FPGA without problems
and I can configure it, but when I plug the cable to the other interface and press scan on Impact it says:
"There are many unknown devices being detected. Press Yes to continue or press No to stop."
If I press the NO option, well, obviously nothing happens :-)
And if I click on YES it fails, I can manually add Virtex5 FPGA, but than it fails to upload the config file to it (and even fails when I try to detect the device ID).
I already tried all JTAG interfaces on the board, nothing.
Same operations work on the same board with SPARTAN FPGA, so I'm stuck. Any ideas ?
Well, I am not familiar with that particular board, but there are many things you can look into when it comes to your JTAG problem.
Check the voltage of your VCC, make sure it has a good value for the board
Make sure your ground connection is well connected and you don't have much impedance
between the connector's GND and the boards GND
Try other JTAG connectors and see if you see any difference in the detection of the
devices.
Try to run the IMPACT in debug mode. Capture the data and see if the patterns look OK
Also something that may not be JTAG related, is to make sure your V5 device has all the powers it needs, if there are any power problems, it may cause the JTAG interface to behave like you explained here.
Also, look on the board and see if there are any switches or jumpers to chose different way of configuring the V5 device. This can be a big issues with multi-FPGA board, maybe the V5 is configured to be programmed from a controller or other devices on the board and the JTAG chain is not set up for programming.
These are just different thoughts, they may help you toward the right direction.
Found this on their site:
User guide for the board
To reprogram the flash ROM (ST45DB16D, U11) for the control FPGA (Spartan-3A), attach the configuration
cable to CN7. For configuration, use the provided mcs file sasebo_gii_ctrl.mcs.
Reprogram the flash ROM (ST45DB16D, U4) for the cryptographic FPGA (Virtex-5 LX30) with the provided
mcs file sasebo_aes_comp_lx30.mcs as well. Connect the configuration cable to CN4.
To configure the FPGA immediately after reprog
ramming of the flash ROM, cycle the power.
Blockquote
This means you can't program the FPGA directly, you need to convert your bit file into MCS file and then load it into the FLASH memory on the board.