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Re: embARC with OpenOCD over Digilent USB-JTAG

 by john_t_eaton ¦  Fri May 27, 2016 10:31 am ¦  Forum: OpenOCD ¦  Topic: embARC with OpenOCD over Digilent USB-JTAG ¦  Replies: 3 ¦  Views: 2272

I have encountered some open-ocd distros that were compiled without the ftdi option.
Check that your usr/local/share/openocd/scripts/interface has a ftdi directory.

John Eaton

Re: Can OpenOCD debug several board at the same time?

 by john_t_eaton ¦  Fri Apr 08, 2016 10:20 am ¦  Forum: OpenOCD ¦  Topic: Can OpenOCD debug several board at the same time? ¦  Replies: 2 ¦  Views: 1083

Warning! I have never tried this so let me know if it works. First of all it is easy to set up a usb device if you know what it's PID/VID numbers are and there is only one plugged in. You have two so that you will have to research and find out how to tell openocd to use one particular interface. You...

Re: RaspberryPi as Jtag host

 by john_t_eaton ¦  Mon Mar 28, 2016 3:52 pm ¦  Forum: OpenOCD ¦  Topic: RaspberryPi as Jtag host ¦  Replies: 1 ¦  Views: 976

No replies but I did find an article that details how to do what I need. ... spberry-pi

RaspberryPi as Jtag host

 by john_t_eaton ¦  Sat Mar 05, 2016 3:24 pm ¦  Forum: OpenOCD ¦  Topic: RaspberryPi as Jtag host ¦  Replies: 1 ¦  Views: 976

I have been using an olimex ARM-USB-OCD-H from my linux box to program fpgas. I bought a RaspberryPi and was able to run openOCD on that to program using the olimex as well. There are several fpga boards available for the RaspberryPi and some are as low as $35. I am considering doing an opensource h...

Opensource FPGA design toolflows

 by john_t_eaton ¦  Sat Jun 06, 2015 9:28 am ¦  Forum: FPGA's ¦  Topic: Opensource FPGA design toolflows ¦  Replies: 0 ¦  Views: 4101

I would like to start a discussion on design entry toolflows for fpgas and asics. I know that there was a previous discussion here that centred on HDL v Schematic but I think it missed point. Any entry method must eventually deliver an hdl net list and whether you write the code in hdl or enter it v...

Returning Data from svf player

 by john_t_eaton ¦  Sat Apr 18, 2015 5:14 pm ¦  Forum: OpenOCD ¦  Topic: Returning Data from svf player ¦  Replies: 0 ¦  Views: 693

I am using an olimex arm-usb-ocd-h connected to a Digilent Nexys2 board to program the fpga and then access the USER jtag registers using openocd. Is there any way to have the svf player display the data returned with each jtag access? I can use the expected value set wrong to get and error message ...