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MyAmigoParticipant
OK
Thanks for your help.
MyAmigoParticipantThank you for the suggestion.
I had installed J-Link V6.48b previously so I updated to the latest beta release (V6.61d) for this trial. I assume that this is the J-Link stub you referred to… https://www.segger.com/downloads/jlink/JLink_Windows_beta.exe
My settings with this installed are shown here: https://photos.app.goo.gl/dtGjtymNYn8a2ARM7
When I run the connection test I get a failure…
https://photos.app.goo.gl/dX3c8aQbbqeqhWHx5
The failure messages are…
Connecting to target...
ERROR: The connected J-Link does not support selecting another hart/core than 0 for RISC-V
Specific core setup failed.
ERROR: Could not connect to target.
I tried targetting the RISCV, RV32 & RV64 devices and different clock settings… Same result in each case.
I can switch back to the OpenOCD debugger and K210 target and things are as they should be…
https://photos.app.goo.gl/szNtbeawdKrPx5Zx8
Do you have any further suggestions?
Thank you
MyAmigoParticipantI was already setup for OpenOCD debugging using tools from Kendyte’s site.
I wish I had tried that first. Hardware registers are unsupported 🙁
cmdlet MCU_debug.ps1 at command pipeline position 1
Supply values for the following parameters:
app: apu
GNU gdb (GDB) 8.2
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Type "show copying" and "show warranty" for details.
This GDB was configured as "--host=i686-w64-mingw32 --target=riscv64-unknown-elf".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
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Find the GDB manual and other documentation resources online at:
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For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from apu...done.
Remote debugging using 127.0.0.1:3333
warning: Target-supplied registers are not supported by the current architecture
0x0000000000000400 in ?? ()
(gdb)
MyAmigoParticipantJust a little more info to go with this to help resolve the problem.
I dumped memory in the region of interest andVisualGDM shows ????? for the entire address space from 0x52000000 – 0x52FFFFFF.
- 0x52000000: https://photos.app.goo.gl/mZkqCchNR8AtaQ59A
- 0x50300000: https://photos.app.goo.gl/oCTc9BdndQ9jzkjP8
This is also seems to be true for the range 0x50400000 – 0x50500000
This should help to narrow down the cause.
- This reply was modified 4 years, 10 months ago by MyAmigo.
MyAmigoParticipantI think you nailed it.
I tested several register locations at the same time. They returned the expected values and the test variables retained that value when reasigned to themselves. A bug in the K210 port of OpenOCD is the likely reason.
Thank you!
MyAmigoParticipantThanks for the crazy-fast input!
x/1x 0x50250200
yields…
x/1x 0x50250200
&”x/1x 0x50250200\n”
0x50250200: 0xffffffff
OK… and that’s the same that I see with the “Hardware Register ” view. Other nearby addresses return the same result.
When I run the monitor command I get all zeroes at that address…
0x50250200: 00000000
- This reply was modified 4 years, 10 months ago by MyAmigo.
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