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    Teensy 3.5 or Teensy 4.0: Parallel Synchronous DMA output?

    Ouch, FlexIO solution sounds outside my pay grade. That puts the Teensy 4.0 out of the running for this application. For the time being. Can anyone point me in the right direction of setting up a Teensy 3.5 to DMA output to PORT D with a clock pin? Basically I'm feeding a high speed packet of...
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    Teensy 3.5 or Teensy 4.0: Parallel Synchronous DMA output?

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    Teensy 3.5 or Teensy 4.0: Parallel Synchronous DMA output?

    I'm looking to push small (100-200 bytes) but very fast bursts of parallel 8-bit data using DMA on the Teensy 3.5 or (preferably) Teensy 4.0, but with a CLOCK pin to make the transfer synchronous. The closest existing library I can think of is OctoWS2811, but AFAIK that library doesn't have a...
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    Teensy 3.1 runs for 27-37 msec, then...

    Stevech --- Well... you are right, I needed to go back to some Basics. What I found was that the setup() routine needed a delay(100) in it, otherwise the intermittent failure behavior happened most of the time. With the delay, it seems to reset properly (almost) every time. Is there...
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    Teensy 3.1 runs for 27-37 msec, then...

    I'm using a Teensy 3.1 and running a simple program using the NeoPixel library. On the board I have a push button soldered to the RESET* pin on the bottom of the board. I have a Tektronix scope connected to Pin 6 which is the assigned output for the NeoPixel library. No other hardware...
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