cnlohr

@cnlohr@chaos.social
147 Followers
14 Following
73 Posts
I do not understand how you can consent to facial recognition for things like the TSA line in the airport, if you think you might want to protest something ever.
Anyone know what the current deal is with the X11 stuff? For one of my systems, I still need to do X forwarding and need things like Xnest, which it seems like Wayland has no interest in supporting. (Also it seems like Wayland is much slower than X for things like Kicad)
There is an alternate tech tree to my life I sometimes wish I had gone down... These were 12 years ago.
Very cool design pattern I saw at TEARDOWN last weekend. Superloops / superduperloops are a great alternative to RTOSes, at a microscopic portion of the costs. https://www.embeddedrelated.com/showarticle/1652.php
You Don't Need an RTOS (Part 2) - Nathan Jones

At least, probably not as often as you think you do. Using a preemptive RTOS can help make a system schedulable (i.e. help all of its tasks meet their deadlines) but it comes at a cost:...

An amazing talk that really taught me some deeper and more true principles in computing. https://www.youtube.com/watch?v=rHIkrotSwcc "There are no zero cost abstractions."
CppCon 2019: Chandler Carruth “There Are No Zero-cost Abstractions”

YouTube
First time using timer-triggered chained DMAs, where one DMA channel writes into the descriptors of another DMA channel to change what the other DMA is doing. This is just a 8x9 matrix array in a 6x12 configuration on a ch32v003, with #ch32fun https://github.com/cnlohr/cnhardware/blob/master/ch32v003/ledarray-badgetest/firmware/firmware.c#L84-L119
The pace of technology is wild. Many GPS units still use framed serial communications, which were first used in the 1870's for teletypes with Baudot Codes.
I'm feelin' lucky