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Thread: clarification on Teensy 4.x qtimer

  1. #1

    clarification on Teensy 4.x qtimer

    Thread's closed, but I must be misreading this post:

    "These are all the unconnected pins on Teensy 4.0 which could become available:
    [..]
    B0_06 A8 QTIMER3_TIMER0
    B0_07 A9 QTIMER3_TIMER1
    B0_08 B9 QTIMER3_TIMER2
    B1_10 B13 QTIMER3_TIMER3

    https://forum.pjrc.com/threads/58028...l=1#post219000


    Both 4.0 and 4.1 have the same 10 qtimers exposed, including all 4 of the QT3, right?

    Neither makes these 6 accessible, out of a total of 16:

    B1_08 A12 QTIMER1_TIMER3

    B0_04 C8 QTIMER2_TIMER1
    B0_05 B8 QTIMER2_TIMER2
    B1_09 A13 QTIMER2_TIMER3

    B0_09 C9 QTIMER4_TIMER0
    B1_11 C13 QTIMER4_TIMER3

    Haven't looked at this in a while, but this
    https://github.com/PaulStoffregen/Pu...itionIMXRT.cpp
    is the go-to for T4.x qtimer use? @mjs513 ?

    What is the resolution using capture to detect rising/falling edges for pulsewidth? 65MHz ?

  2. #2
    Related: the Future 1170 thread is also closed for the duration "until after Teensy 4.1 ships"

    https://forum.pjrc.com/threads/57842...l=1#post233257

    but I was wondering - for those interested in 60+ MHz resolution capture of 16+ concurrent input signals (ideally getting width - rising+falling - from a single channel), what are the prospects for that 1170 piece? Same as T4.x, but at least all 16 exposed? Or completely different timer module yet again?

    Is it still necessary to use two timers in dual edge capture mode?

  3. #3
    For (my own) future reference, also found this thread w/ @KurtE

    https://forum.pjrc.com/threads/57894...l=1#post220131

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