Raspberry Pi Pico Lecture 32 (2025): Custom serial bootloader

0:00 - Administrivia 1:10 - Plan for today’s lecture 5:20 - What is a bootloader? 7:10 - What is our custom boot loader going to do? 9:00 - How will this information be presented? 10:45 - Linker modifications 14:00 - Generating the hex file 16:10 - Understanding the hex file 21:40 - Features of the RP2040 flash memory 26:40 - Bootloader state machine 30:50 - Branching to an application 34:10 - Detecting valid programs, and returning to the bootloader from programs 36:00 - Forcing the system into bootloader mode 39:00 - Detecting valid programs 44:00 - A Python script for reprogramming via the custom bootloader 44:40 - Making this wireless via UART 45:10 - Augmenting this bootloader such that it becomes a worm 48:00 - Symptom of compiling for the wrong board 48:40 - Signing up for final demos Spring, 2025 lectures from ECE 4760 (Digital Systems Design Using Microcontroller) at Cornell University. Course site: https://ece4760.github.io Hunter’s site: https://vanhunteradams.com