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