Brutkey

Trammell Hudson
@th@social.v.st
Trammell Hudson
@th@social.v.st

I can flash the EFR32MG24 once with a program, but have to do the full dci device erase after each one and then power cycle to get the write commands to work again. But at least I have proof of life from gdb talking to openocd.

gdb talking to the device under test with the stepi command and printing the instructions after each step. trying to run with continue produces a double fault
Trammell Hudson
@th@social.v.st

There is a Fiber Seeking Backhoe outside our "datacenter". Hopefully we don't lose connectivity again.

a small construction backhoe on a sidewalk, digging a trench in the bricks
Trammell Hudson
@th@social.v.st

Just acquired a new tester and it has shown me that so many of my USB cables are lies.

USB-A to C cable plugged into a treedix tester, showing that many of the pins not connected.
Trammell Hudson
@th@social.v.st

I just got burned by a camera that doesn't maintain a monotonic file number count, so if you move MOV123.MP4 off of the card and then shoot another video, it will also be named MOV123.MP4 and when you copy the card contents to the same destination directory it will overwrite the first MOV123.MP4 that you recorded and can't recreate because that was the take that had to be done in one shot.

Trammell Hudson
@th@social.v.st

And after sending a efm32s3_dci_device_erase command, I can debug the chip. So thanks for the $5 dev board with boost converter, Ikea, even if we have to start from zero for the firmware.

openocd session that shows debug lock disabled and a efm32s2 cpu cortex-m33 r0p4 processor.
Trammell Hudson
@th@social.v.st

Unfortunately it seems that Ikea is now enabling lock bits on their Zigbee devices. I also had to build a custom version of openocd to talk to this efm32s2 MCU https://github.com/knieriem/openocd-efm32-series2

screenshot of openocd saying "debug lock: enabled" along with "you will not bea ble to communicate with this device unless you perform a device erase (if available)"
Trammell Hudson
@th@social.v.st

nor was this pษนวpuozวฦƒส‡แด‰n sign explained.

brick street next to a canal with a do not enter sign below an upside down fietsen uitgezonderd sign.
Trammell Hudson
@th@social.v.st

The recent video by @BicycleDutch@mastodon.social on biking rules didn't explain this sign https://www.youtube.com/watch?v=sXxlHRtT0j8

brick street with an upside down arrow on a blue sign
Trammell Hudson
@th@social.v.st

Does anyone have volume 4968? I need to lookup something.

Three volumes of a multithousand printed edition of Wikipedia.
Trammell Hudson
@th@social.v.st

Thanks for the SWD labels, Ikea!

blurry photo of a small circuit board with CLK, DIO, TX, RX, VCC and GND labeled test pads