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

Imran Wali iwali at nebrija.es
Wed May 30 15:26:59 BST 2018


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.


Imran Wali

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