Atmel® SAM4L USB Host Mass Storage Class Bootloader with AES solution is targeted for customer products which require on-field application firmware upgrade through a simple USB Mass Storage Class Device. This application note describes how to configure the bootloader, the firmware generator, and the application. It also describes the procedure for firmware upgrading through the bootloader.
This application note describes how to configure the bootloader, the firmware generator, and the application. It also describes the procedure for firmware upgrading through the bootloader.
Features
- Atmel USB Host Stack V2 with USB MSC Class support
- Enables firmware upgrade through a USB MSC Storage drive
- Optional AES decryption through AESA module for secure firmware upgrade
- Integrity check with 32-bit CRC through CRCCU module
- Signature bytes to facilitate initial identification of a legal firmware
- Verification of programmed memory
- Console messages to track the state of the bootloader in debugging
- Firmware generator application to generate encrypted/unencrypted firmware with CRC32 and signature bytes
- Optional feature to allow application to jump into bootloader mode through fuse
- Footprint <32KB
