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  1. So with the upfront disclaimer that I might be an...

    So with the upfront disclaimer that I might be an idiot, .available() seems to be incrementing now, but it also appears to be returning a value that is twice what it should be. Using the original...
  2. Thanks so much Paul. I'm away from my T4 until...

    Thanks so much Paul. I'm away from my T4 until tomorrow, but I'll give it a crack then and report back
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    I'm still working through developing the T4.0...

    I'm still working through developing the T4.0 code for Speeduino. Even if the comms stuff was working right now, I haven't done all the timers stuff yet so it won't actually run an engine. I'll get...
  4. Just to confirm back, using a 3v3 USB serial...

    Just to confirm back, using a 3v3 USB serial adapter and Serial1 on the Teensy 4.0, everything works perfectly, so this problem is definitely within the USB serial implementation.
  5. After more playing, I've managed to confirm a few...

    After more playing, I've managed to confirm a few more things around this, but not exactly where the main problem is coming from. As best as I can tell, the serial RX interrupt is being disabled...
  6. A little more playing and I can see that there's...

    A little more playing and I can see that there's definitely an issue here with subsequent serial data being sent. It's not just that Serial.available() isn't being updated, it's that the subsequent...
  7. Assuming this should've been...

    Assuming this should've been serial.setTimeout(0), it made no difference.
  8. Teensy 4.0 Serial.available() stops incrementing

    OK, I really hope I'm doing something dumb, but I'm having all sorts of trouble with some of the serial functions under Teensy 4.

    The issue I'm seeing is that the Serial.available() stops...
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    Hey team, I received my Teensy 4 board today with...

    Hey team, I received my Teensy 4 board today with the hopes of getting my Speeduino ECU firmware running for it shortly. I'm experiencing what appear to be hard lockups of it though, seemingly serial...
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    Totally forgot to report back on this one, but...

    Totally forgot to report back on this one, but I've got my adapter board all finished off and working. It's not 100% in terms of pin coverage of the Mega, but it uses all of the through hole IO on...
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    So, I've just about got my adapter board finished...

    So, I've just about got my adapter board finished off. Ended up using a pair of LMV324LIDT quad op amps, basically exactly how Epyon describe, so thanks for the input!

    Will report back when I've...
  12. FTM Channel compare interrupts (Teensy 3.5)

    So I thought I'd do a bit of a write up around some of the work I'm doing with the FTM timer in the hopes of potentially making life easier for others wanting to do this in the future. The background...
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    This is the one and only thing that made the...

    This is the one and only thing that made the difference for me. I have an existing project based on the Mega 2560 that has a hard requirement for at least 3kb of EEPROM. For various reasons I didn't...
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    Thanks for the reply, and the diagram! That...

    Thanks for the reply, and the diagram!

    That was certainly the other option I'll look at if needed. Whilst the K64 datasheet does recommend the use of a 0.01 μF cap and talks about being able to...
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    5v to 3.3v analog translation

    I'm about to start porting a project of mine (http://speeduino.com) for the Teensy 3.5 and looking at making an adapter board that will allow the Teensy to plug into existing shield boards designed...
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