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Type: Posts; User: rcolistete

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  1. See this topic, Teensy 3.x/4.0 CoreMark,...

    See this topic, Teensy 3.x/4.0 CoreMark, Temperature and Power Benchmark, e. g. :
    - Teensy 4.0 @ 24 MHz, i = 35 mA;
    - Teensy 4.0 @ 1008 MHz, i = 249 mA.
  2. Look at the Teensy 4.0 Schematic...

    Look at the Teensy 4.0 Schematic for the names of pins A0, A1, A2, etc :
    =================================
    IOMUXC_SW_PAD_CTL_PAD_GPIO_AD_B1_07 = 0xb0; // A2
    IOMUXC_SW_PAD_CTL_PAD_GPIO_AD_B1_06 =...
  3. Was this keeper mode fixed (turned off for ADC)...

    Was this keeper mode fixed (turned off for ADC) in Teensyduino 1.52 ? As its change log cites :

    Does low power ADC mode has keeper on, and standard ADC mode has keeper off ?
  4. Teensy LC @ < 24 MHz should be an excellent MCU...

    Teensy LC @ < 24 MHz should be an excellent MCU for low power applications (without USB serial, using battery) in active mode (and also in deepsleep mode).

    This benchmark shows i <= 2.0 mA on...
  5. Teensy 3.x/4.0 CoreMark, Temperature and Power Benchmark

    Benchmark comparing performance (CoreMark), temperature (from internal MCU sensor) and power usage (electrical current i using USB serial meter) for Teensy 4.0/3.6/3.5/3.2/LC :
    Teensy 3.x/4.0...
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    Thanks @tannewt for the detailed answer....

    Thanks @tannewt for the detailed answer. Excellent, the microSD can work with the Adafruit_CircuitPython_SD library, and the community can develop drivers to access PSRAM and/or flash external IC's...
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    I don't yet have a Teensy 4.1, just Teensy 4.0. ...

    I don't yet have a Teensy 4.1, just Teensy 4.0.

    Any new feature of Teensy 4.1 (with respect Teensy 4.0) is implemented in CircuitPython 5.4.0-beta.0 for Teensy 4.1 ?
    - internal 8MB flash memory...
  8. Or zip the file (.zip is accepted).

    Or zip the file (.zip is accepted).
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    Thanks for the CircuitPython for Teensy 4.0...

    Thanks for the CircuitPython for Teensy 4.0 v2020-01-19. The benchmarks show that it's as fast as v2020-01-18.

    The REPL is better (no bugs until now).

    But the the same pystone benchmark (see...
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    The latest (2nd) firmware from @tannewt is a lot...

    The latest (2nd) firmware from @tannewt is a lot faster than the 1st one :
    - performanceTest with firmware CircuitPython 5.0.0-beta.3-6-g926375d99-dirty on 2020-01-10 @ Teensy 4.0 : 300871
    -...
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    Done (3rd one is a new issue) : -...

    Done (3rd one is a new issue) :
    - microcontroller.cpu.temperature doesn't work on Teensy 4.0 #2514;
    - REPL disconnects in paste mode with >= 4 lines on Teensy 4.0 #2515;
    - ampy doesn't work with...
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    Bugs so far : - CircuitPython halts after : ...

    Bugs so far :
    - CircuitPython halts after :

    import microcontroller
    microcontroller.cpu.temperature
    - REPL disconnects after pasting more than approx. 4 lines in paste mode (CTRL+E). I have to...
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    Thanks for this 1st image of CircuitPython for...

    Thanks for this 1st image of CircuitPython for Teensy 4.0 !

    First tests :


    $ screen /dev/ttyACM0
    Auto-reload is on. Simply save files over USB to run them or enter REPL to disable.

    Press...
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    CircuitPython 5.0.0-beta.3 was released to...

    CircuitPython 5.0.0-beta.3 was released to Feather MIMXRT1062.

    But the firmware is in .uf2 format. How to use an .uf2 firmware on Teensy 4.0 ?

    AFAIK, Teensy Loader CLI needs .hex firmwares.
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