Unable to flash target code on CW312-T A35 ibex

[jpthibault]

You’ll find the openocd config file that I’ve used with Tigard and the Ibex target in this thread:

Loading an application to the programmed FPGA

There should be no need to adapt anything for the CW305: there is already support for the CW305 (see e.g. the synth_cw305 target in ibex_demo_system.core). It should just build, out of the box. For programming firmware, you’ll need an external JTAG programmer connected to the “FPGA JTAG” header (lower left corner of the CW305). I’ve done this successfully using Tigard and this openocd config file: interface ftdi ftdi_vid_pid 0x0403 0x6010 ftdi_channel 1 adapter_khz 500 ftdi_layout_init 0x003…

That was for our CW305 target; it also works for the CW312-A35, just make sure to set EXPECTED_ID to the correct FPGA part.