I have another RTFM (Read the Manual) story to share: Ever see a diagram and think “what the heck is going on here?” I’ve spent a lot of time developing code for SPI devices or devices that utilize some form of shift register input. This is the first time in a while that I’ve seen … More A Confusing Timing Diagram
At dinner on Sunday, an old friend and I were discussing recent issues and anomlies we’e encountered with the I2C bus.
I’ve made a note of them on my blog to help familiarize others with some of the more abstract and uncommon issues on I2C buses. … More Three, new to me, I2C issues!
Life is a continuous learning experience. I have been using RS485 for about 20 years, on and off. Despite all that experience, I found something new for my toolkit a few months ago. I suspect some of my audience has been using the same RS485 solution for decades. There will be a similar portion who … More RS485 Auto-direction
This is an adventure in debugging.
I recently encountered a bug in a very simple walking-ones test. It was near the end of the data, so it looked like an off-by-one bug; closer inspection told me otherwise. … More What feels like an off-by-one-bug, but isn’t?
Glorified Plumbing 