OTA Client

A firmware bootloader for over-the-air (OTA) updates on microcontrollers. For the update server see hawkBit; for code signing see Security and ESP32.

Bootloader features

Configurable application space
Flash erase
Flash programming
Flash verification after programming
Checksum verification
Flash protection check; write-protection enable/disable
Bootloader firmware update and full-chip re-programming — enter ST's built-in bootloader from software (without triggering the BOOT pin)
Serial tracing over SWO for easier debugging and development
Extended error handling and fail-safe design
Easy to customize and port to other microcontrollers

Ymodem — serial file transfer.
UDS (Unified Diagnostic Services), ISO 14229 — for car ECUs.
KWP2000 (Keyword Protocol 2000), ISO 14230 — implemented over the K-line, for motorcycle ECUs.

Common Non-Volatile Memory (NVM) driver.