JLink JTAG Access on the Pinecil
danielmangum.com
JLink JTAG Access on the Pinecil
1–10 of 18 posts
Re: JLink JTAG Access on the Pinecil
#2Jlink is closed source.
Better use dirtyJTAG on an rp2040.
Re: JLink JTAG Access on the Pinecil
#3Jlink is closed source. Better use dirtyJTAG on an rp2040.
Agree RP2040 / RP2350 is great for debug and UART access! I wrote[0] about using picoprobe with this device as well.
[0] https://danielmangum.com/posts/risc-v-bytes-accessing-pineci...
Re: JLink JTAG Access on the Pinecil
#4Good to see an "organic" J-Link + RISC-V use case :)
Re: JLink JTAG Access on the Pinecil
#5Jlink is closed source. Better use dirtyJTAG on an rp2040.
Doesn’t look like openocd is getting dirtyjtag support any time soon, the PR has stalled since 2003 it seems https://review.openocd.org/c/openocd/+/7344
Re: JLink JTAG Access on the Pinecil
#6Jlink is closed source. Better use dirtyJTAG on an rp2040.
Agree RP2040 / RP2350 is great for debug and UART access! I wrote[0] about using picoprobe with this device as well. [0] https://danielmangum.com/posts/risc-v-bytes-accessing-pineci...
I tried to use picoprobe to debug an nrf52 chip, it failed to even detect it.. All that’s officially supported is using it to debug a raspberry pi, and maybe if I added 100Ohm resistors to the lines I would have had better luck, but.. alas
Re: JLink JTAG Access on the Pinecil
#7I bought a Pinecil so I could run it off a battery. I really came to appreciate the excellent temperature control and rapid heating, and use it instead of my soldering station for jobs away from the bench.
I have felt absolutely no need to touch the firmware. I try to forget that it is more powerful than my first three personal computers combined. Plug in, turn on, get hot. It meets my needs and exceeded my expectations. I suppose I could run a website from it if I wanted to make a point but as long as it doesn't require wifi and phone home to verify the license and leak my biometric data I expect to use it until I wear it out.
Re: JLink JTAG Access on the Pinecil
#8Jlink is closed source. Better use dirtyJTAG on an rp2040.
Why that over the debug probe firmware?
Re: JLink JTAG Access on the Pinecil
#9I bought a Pinecil so I could run it off a battery. I really came to appreciate the excellent temperature control and rapid heating, and use it instead of my soldering station for jobs away from the bench. I have felt absolutely no need to touch the firmware. I try to forget that it is more powerful than my first three personal computers combined. Plug in, turn on, get hot. It meets my needs and exceeded my expectati…
[deleted]
Re: JLink JTAG Access on the Pinecil
#10Earlier quoted context omitted.
Agree RP2040 / RP2350 is great for debug and UART access! I wrote[0] about using picoprobe with this device as well. [0] https://danielmangum.com/posts/risc-v-bytes-accessing-pineci...
I tried to use picoprobe to debug an nrf52 chip, it failed to even detect it.. All that’s officially supported is using it to debug a raspberry pi, and maybe if I added 100Ohm resistors to the lines I would have had better luck, but.. alas
> I tried to use picoprobe to debug an nrf52 chip, it failed to even detect it
I've literally got a Pi Debug Probe and a nRF52840 dev board on my desk, so I gave it a shot - and it works just fine. Make sure the core is awake when you try to connect for debug, or connect under reset; SWD goes to sleep with the rest of the chip.
> All that’s officially supported is using it to debug a raspberry pi
The Pi Debug Probe is a generic DAPlink probe, and will work for pretty much any Cortex-M part. I routinely use mine for debugging STM32 parts.