Recent content by yoonghm

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    MTP Responder Contribution

    You have to check if inserting SD card would cause the K64 to wake up. There is a thread library, perhaps can try to run two threads, one is to serve MTG, another is to run other tasks. I think I will add another examples, to write data to the SD periodically. If a file is opened, the on-board...
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    MTP Responder Contribution

    Sorry for delay, it took time to reinstall, read the forum, update and test again. I have updated the MTP into https://github.com/yoonghm/MTP, with comments for Teensyduino 1.39. I have also created an example that call mtpd.loop() only when SD card is present. The example also demonstrate to...
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    Real low latency logging for Teensy 3.5/3.6 SDIO SD

    I believe one can use IntervalTimer to trigger create() to pre-create another file before the start of a new day and when the app is not writing log to sd card. Then another IntervalTimer to trigger to close() the existing file and switch to the new file.
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    CMSIS problems

    Looking forward for the new github repository. Thanks
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    CMSIS problems

    I saw this https://hackaday.io/project/18505-chibios-on-teensy-36 Has you seen it?
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    Teensy 3.6 Audio: LED overload protection & GND/AGND & 78L05 Power Supply

    For #3, see this post https://forum.pjrc.com/threads/38027-Teensy-3-6-Power-supply
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    How to program MKL02/MKL04 MCU without soldering them?

    Thanks for the quick reply.
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    How to program MKL02/MKL04 MCU without soldering them?

    Just curious, how does Paul flash so many MKL02/MKL04 MCU without soldering them? Thanks.
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    When is Teensy 3.6 RTC set?

    During VLLS1 mode, the 32-byte VBAT register file remain powered for customer-critical data.
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    pinMode disabled USB Serial - Teensy 3.6

    I did not check the datasheet, i did not see serial pin in 40 https://www.pjrc.com/teensy/td_uart.html
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    Low Power Teensy+PCB problem

    Hi, there was a typo. Making unused pins to input, instead of output, reduces leakage current.
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    Low Power Teensy+PCB problem

    You may consider to power it from the same supply to Teensy. You have to check voltage and cut out the trace. I am curious who do you make all the pins input instead of input, which may reduce leakage current.
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    Teensy 3.6 Stop working, think the voltage regulator is gone

    I tested out LEDs with Teensy 3.6 yesterday. Now it is not working. Voltage across 3.3V and GND gives 0.33. I think the voltage regulator is not gone. Any possibility to replace the voltage regulator?
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    SMC_VLLSCTRL register is not found in K66 (Teensy 3.6)

    Quick and smart solution.
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    SMC_VLLSCTRL register is not found in K66 (Teensy 3.6)

    Teensy 3.1/3.2 (K20) and 3.5 (K64) have SMC_VLLSCTRL register. However Teensy 3.6 (K66) doest not have SMC_VLLSCTRL register. Instead it has SMC_STOPCTRL register. Need to update kinetis.h ...
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