Creating Custom Bootloader (USB DFU) and Relocated Application - STM32 Tutorial #40

This is a big one. In this video we will explain and go through the process of creating a custom bootloader, which will allow firmware update using USB DFU (Device firmware update). This will ultimately allow us to upgrade firmware from a browser. The video will cover both the bootloader itself as well as relocating the application to an alternative memory address. We will be implementing both the bootloader and the application in real-time - in less than an hour. The actual DFU functionality is covered in this video: https://www.youtube.com/watch?v=O6oslbgkjq8 As usual - if you learned anything from this video, please do like and subscribe. If there's something you do not like, please explain in a comment so I can learn to do better. A bug is in this video! Please check https://www.youtube.com/watch?v=Wm7eWu5dCrY for an explanation. In an earlier video we looked at how to jump to the internal bootloader. It would be advisable to watch that first here: https://www.youtube.com/watch?v=qXi6o8hhwUE This will (work in progress) be described on the STM32World wiki here: https://stm32world.com/wiki/Custom_DFU_Bootloader Project Files: https://github.com/STM32World/stm32fun #stm32 #tutorial #GettingStarted #bootloader #usb #dfu #stm32cubeide #stm32cubemx #stm32world #arduino 00:00 Intro and recap 01:40 A bit of theory 03:00 Creating the new bootloader project 07:20 Creating the new application project 10:50 Analysing the bootloader build 11:20 Adding a bit of functionality to bootloader 16:15 Adjusting the linker script for the bootloader 19:26 Adding functionality to the application 23:30 Relocating the application 32:26 Testing both bootloader and application 34:45 Implementing switch between bootloader and application 40:30 Implementing button interrupt in bootloader 43:00 Implementing button interrupt in application 44:11 Jump to bootloader from application 47:20 Testing final solution and sorting out bugs 50:00 Working!!!!