Home 2018 Forums Crumble Development Direct access/programming of PIC16F1455

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    Given that the micro controller in the Crumble is a PIC16F1455 . . . and that Crumble on the computer talks to it directly to both communicate variable values and upload new programmes . . . I assume that there is a boot loader on the PIC that handles the USB/Serial interface and programme loads.

    So, is there a way to program the Crumble/PIC directly for those who have progressed beyond the scratch like Crumble interface? . . . and if so, what programming language / tools are involved ?



    I have a lot of experience with the PIC16F1455, and there are several good choices for a good USB bootloader. If you can get access to the ICSP pins (unique to the …1455).

    I especially like Peter Lawrence’s work mentioned here…

    A Tale of Two (USB) Bootloaders

    And here’s a foray I made with this chip and Great Cow Basic, and good candidate for a next step beyond Scratch/Crumble…


    Is there a schematic for the crumble posted any where?



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