[lowrisc-dev] Problem running a debug session on FPGA

Philipp Wagner lists at philipp-wagner.com
Wed May 30 16:03:29 BST 2018


On 05/30/2018 04:26 PM, Imran Wali wrote:
> Hi,
> I am trying to run a debug session on FPGA as described on http://www.lowrisc.org/docs/debug-v0.3/fpga/.
> After programming the nexys4ddr board with the provided debug enabled FPGA bitstream, following error is encountered while trying to open the debug daemon:
> $ opensocdebugd uart device=/dev/ttyUSB1 speed=12000000
> Open SoC Debug Daemon
> Backend: uart
> opensocdebugd: ../../src/regaccess.c:60: osd_reg_read16: Assertion `packet[0] == 3' failed.
> Aborted (core dumped)
> $
> Could you please identify what's going wrong here.

this looks like a bug in GLIP that we already fixed. Could you try 
updating the GLIP code in your lowrisc version to current master and try 



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