GPIO expansion board
-
Spilly
- contributor
- Posts: 64
- Joined: Thu Jul 31, 2014 11:30 pm
GPIO expansion board
Also, if you want to get really crazy, I can make a GPIO expansion board. For example, use three digital outputs from the STM32 to control 8, 16, or more outputs. The downside is changing the state of one of the outputs would take 10-100 microseconds longer depending on the communication protocol and number of outputs.
-
AndreyB
- Site Admin
- Posts: 14727
- Joined: Wed Aug 28, 2013 1:28 am
- Location: Jersey City
- Github Username: rusefillc
- Slack: Andrey B
Re: GPIO expansion board
Maybe. Need to do the math and re-iterate the use-cases. We kind of have the issue of surface space shortage and we kind of have an issue of pin shortage with the 100 pin case, but also not so many outputs are so slow and we have not so many slow digital inputs like buttons or clutch switches. I'd say button inputs is the most realistic use-case.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute