STM32 Bootloader + HTML-Based Flash Utility

The Course

  • USB Serial Connection

  • Communication Protocol
  • Read & Write Flash
  • Update in Web Browser
  • HTML-Based Flasher
  • AES Encryption (*.bin)
  • CRC-32 Checksum

PRODUCTION-READY STM32 BOOTLOADER

Take this course if you're into STM32 HAL and want to build a reliable, production-ready bootloader. While we focus on USB CDC and Web Serial API, the core concepts can easily adapt to UART-based bootloaders or EXE flasher utilities.

STM32 USB Device

  • Configuring the STM32 for USB Connectivity

  • Receiving Data from the Microcontroller Using JavaScript

  • Sending Data to the Microcontroller Using JavaScript

  • Seamless USB Re-enumeration Without Unplugging

Communication Protocol

  • Command 0x01: Device Identification

  • Command 0x02: Read Flash Memory

  • Command 0x03: Erase Flash Memory

  • Command 0x04: Write Flash Memory

  • Command 0x05: Reset the Device

Advanced Features

  • Backup Registers Boot Sequence

  • Read & Write Protection of the Bootloader

  • CRC-32 Checksum for Data Integrity

  • AES Encrypted File Updates