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Thread: Bootloader Chip For Teensy 4.0

  1. #1
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    Bootloader Chip For Teensy 4.0

    Will the bootloader chip for the Teensy 4.0 be available for purchase? So I can integrate a Teensy 4.0 directly onto my pcb. I know you can purchase the Teensy 3 bootloader chips but I didnít see the Teensy 4.0 chip on the website. https://www.pjrc.com/store/ic_mkl02.html

  2. #2
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    I'm also interested in this. Does anyone know the answer?

    Thanks,
    Louis

  3. #3
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    Bump .

  4. #4
    Senior Member+ KurtE's Avatar
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    Note, If you go up to the PJRC website and try to add something to a shopping cart you will see a message:
    PJRC will be closed November 16 to 24.

  5. #5
    Senior Member+ defragster's Avatar
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    At some point the bootloader chip in use that is common to other Teensy models will most likely be released with support for the Teensy 4.0 MCU as well. Paul has not posted anything to the contrary AFAIK

    No idea what the schedule for that may be going forward - but looking back Paul has been fully occupied with PJRC matters like stocking the T4 and other models as well as software for T4 and TeensyDuino update to the IDE 1.8.10 and SerMon support to be generally usable as Serial monitor to the output rate from the T4's 480 Mbps USB.

  6. #6
    Senior Member PaulStoffregen's Avatar
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    PJRC will sell a boot loader chip for 4.0, but probably not until at least mid-2020, maybe later.

    Teensy 4.0's bootloader as it exists today does not work with a fresh IMXRT1062 chip, so we can't simply sell you chips with the exact code we're shipping now. That code depends on the 1062's fuses being pre-set by the test fixture we use.

    Eventually I will add code to the bootloader to detect a fresh IMXRT1062 chip and automatically set its fuses. But today that code simply does not exist. And *many* other things, like adding the missing USB device types, are a much higher priority, so you can expect this bootloader work to not happen until at least the middle of next year.

  7. #7
    Senior Member PaulStoffregen's Avatar
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    Quick update, if anyone's still watching this thread... today I am working on making the bootloader compatible with virgin IMXRT chips (the chip on Teensy 4.0 gets fuses initialized by our bed-of-nails test fixture).

    Bootloaders need to be tested very thoroughly. We'll probably have 1 month or longer of testing, so please do not expect to see PJRC offering a ready-to-use bootloader chip until March or perhaps April. But it is coming.

  8. #8
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    Definitely still paying attention to this!

    Thanks for the update,

    Chip

  9. #9
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    Paying attention here as well, this would definitely help make my product easier to build.

  10. #10
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    Definitely paying attention to this! Thanks for moving the potential release date up!

  11. #11
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    This is great to hear, Paul. I'm eagerly awaiting it! Thanks so much for the update.

  12. #12
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    Awesome! Thanks for the update Paul.

  13. #13
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    Looking forward to this.

  14. #14
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    Definitely looking forward to this! Paul, will you be making an announcement when the new bootloader is available?

  15. #15
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    Hi, I'm wondering if there have been updates on the topic? Will a ready-to-use chip be made available in the upcoming weeks in PJRC? Eagerly looking forward to this!

  16. #16
    Senior Member PaulStoffregen's Avatar
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    I can confirm that I have, as part of the work towards Teensy 4.1, updated the bootloader to detect a virgin IMXRT chip and initialize it. So the major blocking issue has been solved.

    Much work and careful testing remains to be done before PJRC can sell this as a stand-alone chip. I hope you can understand how bootloader code requires much more testing than regular software.

    I can not give you a time frame, especially during this time where PJRC is running short staffed due to Oregon's shelter-in-place order for Covid-19. But I can tell you that work will not even begin until we're shipping Teensy 4.1 and Teensyduino 1.52 is released. A couple weeks after both of those have events have happened would be a good moment to ask again about this chip.

  17. #17
    I know your still busy with the shelter in place still going on. Just a reminder we are still patiently waiting for this.

    Thanks

  18. #18
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    Thanks per you advice Paul, I am also waiting for this ...

  19. #19
    I would also buy a few chips. I have 3 Teensy 4s that I managed to burn the chip. So hopefuly I will manage to replace them.

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