#litex on 2021-10-27 — irc logs at libera.irclog.whitequark.org

2021-05-24 10:26 _florent_ changed the topic of #litex to: LiteX FPGA SoC builder and Cores / Github : https://github.com/enjoy-digital, https://github.com/litex-hub / Logs: https://libera.irclog.whitequark.org/litex

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10:41 <mntmn> _florent_: is it possible to integrate litescope over JTAG? (like ILA). or, is it possible to use litescope with ethernet while linux is also using ethernet?

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12:52 <_florent_> mntmn: You can use LiteScope over JTAG yes, for this you just need to add a JTAG Bone bridge: self.add_jtagbone()

12:52 <_florent_> https://github.com/enjoy-digital/litex/blob/7914923d2dcf556c366a3796cd6e5920585d0569/litex/soc/integration/soc.py#L1241

12:53 <_florent_> and then open litex_server in jtag mode: litex_server --jtag

12:53 <_florent_> https://github.com/enjoy-digital/litex/wiki/Use-Host-Bridge-to-control-debug-a-SoC#add-a-jtag-bridge-to-your-soc

13:10 <mntmn> _florent_: perfect!! thanks

13:48 <mntmn> hmm, is xilinx platform cable usb II not supported by openocd? (03fd:0008)

13:52 <mntmn> ah, needs ixo-usb-jtag firmware huh

14:18 <_florent_> mntmn: Sorry I've only been using JTAG HS2

14:18 <_florent_> but it should work with any FTDI based cable

14:19 <_florent_> Since yesterday, we now also have support for this on ECP5 thanks to Greg Davill and GSomlo!

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14:23 <mntmn> _florent_: yeah, the xpc cable is based on cypress fx2 so it needs some custom firmware to emulate the ftdi interface but that all doesn't work

14:23 <mntmn> at least i can't get it to work, so i need to buy a different jtag adapter that works with openocd

14:24 <_florent_> ok I see, sorry not sure I can help on this

14:24 <_florent_> If have two spare IOs, you can also run LiteScope over UART

14:26 <_florent_> just create specific uart pins (ex "litescope_serial") in the platform and use self.add_uartbone (name="litescope_serial") in the SoC

14:27 <trabucayre> mntmn: have you a link to this cable ?

14:27 <trabucayre> (ie to order one)

14:30 <mntmn> _florent_: ah yeah i have additional uart pins

14:30 <mntmn> trabucayre: you want to order the non-working xilinx platform cable 2?

14:31 <mntmn> trabucayre: this is the original but i have a fake https://www.xilinx.com/products/boards-and-kits/hw-usb-ii-g.html

14:32 <mntmn> trabucayre: it works with ise, vivado and with xc3sprog but couldn't get it to work with openocd

14:36 <trabucayre> ouch!

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