2/25/2023 0 Comments Microchip pic serial bootloader![]() ![]() It turns out the microcontroller chose to use on the Hackaday | Belgrade badge is the 25k50. But there should be even more on the way from the Xpress team before too long. That’s a big invitation for all kinds of hacks. ![]() But in our minds it’s the USB-MSD that is killer since it doesn’t require any software or drivers on the computer side of things. Now, this may seem like small potatoes at first look: it requires two microcontrollers on your board and is capable of programming just a small subset of the vast PIC inventory. But it should be possible to tweak this package to program any chips that use the 8-bit LVP-ICSP protocol. This code is what’s running on the $10 Xpress board that they released last month which includes a PIC18F25K50 to serve as a PICkit On Board (PKOB) programmer for the actual target micro a PIC16F18855. In its stock version, the XPRESS-Loader firmware programs any PIC16F188xx chips that have a row size of 32 words. ![]() This open source project allows a board to enumerate as a USB Mass Storage device. Microchip just published their USB-MSD Programmer firmware. ![]()
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