Friday, 2019-07-26

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xobsWhat do people generally use as a debug bridge with litex? I use USB, and I know bunnie has some uart devices. Is udp common?11:25
xobsI'm asking because I've been working on my Wishbone tool, and I just added uart support to it. I'm wondering how many people would benefit from it, and what protocols I should add next.11:31
_florent_xobs: i'm mostly using uart and udp, uart for small SoCs, udp for larger SoCs. I find udp more convenient to use (just plug to the network and no need to restart the server between SoC reboots)11:51
_florent_xobs: i'll do a test with your tool, is it
tpbTitle: GitHub - xobs/wishbone-utils: Utilities for working with a Wishbone bridge (at
xobs_florent_: that's correct, with prebuilt binaries at
tpbTitle: Release Proper Serial support · xobs/wishbone-utils · GitHub (at
xobsI need to work on documentation.  I'll do that now.12:00
xobsBut the tl;dr is "wishbone-tool --serial /dev/ttyUSB0 0" to read from address 0.12:00
xobsOr you could do "wishbone-tool --serial /dev/ttyUSB0 0 0x12345678" to write 0x12345678 to address 0.12:00
xobsOr "wishbone-tool --serial /dev/ttyUSB0 -s wishbone" to do the equivalent of "litex_server".12:01
xobsOr "wishbone-tool --serial /dev/ttyUSB0 -s gdb" to run a vexriscv gdbserver that you can connect gdb to.12:02
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_florent_xobs: cool, thanks! it's probably a lot faster than lxserver, i'll test it during the weekend15:14
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