Hello there,
I really have troubles to debug cellcube software using a J-Link or ST-LINK adapter in PlatformIO. Any hints in this direction?
Thanks, Edi
JTAG debuging in platformio
1 Like
I think it would help if you describe what you tried and how it failed.
@joba1 I took an ST-LINK and connected
ST-LINK <--> CubeCell Board
3V3 (Pin 2) <--> 3V3
GND (Pin 7) <--> GND
SWC (Pin 4) <--> SWC (GPIO7)
SWD (PIN 6) <--> SWD (GPIO6)
Then I first wanted to know if I can get any connection to the CubeCell by $ openocd -f interface/stlink-v2.cfg -f target/psoc4.cfg but it was to no avail:
edi@beast:~/Projekte/CubeCell$ openocd -f interface/stlink-v2.cfg -f target/psoc4.cfg
Open On-Chip Debugger 0.10.0
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : auto-selecting first available session transport "hla_swd". To override use 'transport select <transport>'.
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
adapter speed: 1500 kHz
ocd_process_reset_inner
Info : Unable to match requested speed 1500 kHz, using 1200 kHz
Info : Unable to match requested speed 1500 kHz, using 1200 kHz
Info : clock speed 1200 kHz
Info : STLINK v2 JTAG v17 API v2 SWIM v4 VID 0x0483 PID 0x3748
Info : using stlink api v2
Info : Target voltage: 3.542025
Error: init mode failed (unable to connect to the target)
in procedure 'init'
in procedure 'ocd_bouncer'
my st-link has a 3.3V pin that is only good for measuring but not delivering power/voltage. Maybe that is your problem? I had to use a pin on another connector.
edit: and my experience with st-link only includes stm32 chips. Maybe others can chime in…
@joba1 Well, I also tried it with USB connected to power, did not work.
Hm, I ordered some parts to make an adapter for my Blackmagic Probe… I will report back if this works
No, Blackmagic also does not work…
No, the standard that ships with Ubuntu 20.04. Will try the one you pointed to later, thanks!
This the below linked article from May 21 seems to say J-Link/ST-Link are not supported, that would be a shame if true. I miss the debugging. Have not tried it myself…
Paragraph 6:
Heltec uses a custom CubeCell bootloader for ASR650x where serial number/license is stored into flash to enable Arduino support. Due to implementation thereof it is unfortunately not possible to use the ARM SWD interface for firmware upload and debugging (with J-Link or ST-Link).
https://www.thethingsnetwork.org/forum/t/heltec-cubecell-part-2/37225
Well, you only have to pay attention not to overwrite row 3 of the user flash… or back it up before 
1 Like
So, perhaps it is doable? That would be good to hear.
I’m researching it with a friend. It seems that timing after reset is important.
CubeCell does not support ST-LINK.
Yes, we found out. Which JTAG adapter would you recomend?
JTAG is not currently supported, we use kitProg3 (PSoC).
OK, thank you. But as I understand, KitProg also uses SWD as transport. I’ll report back as soon as I got my J-Link
1 Like
Does Heltec have an “app developer guide to using a debugger with the Cubecell” sort of document?
Sorry, we currently do not have this type of document.
I’m using a kitgProg3 but I’m unable to communicate with a HTCC-AB01 board - anything special other than connecting SWD, SWC, RES, GND pins? The board is resetting while trying to connect - but the acquistion doesn’t happen with PSoC Programmer. Ping @shaffer?
You are not connected to the power supply.