Key Features

USB DFU

• Code download to RAM or FLASH
• Code read back (upload) from RAM or FLASH (Useful for taking firmware backups)
• Works with Windows, Linux, macOS and Android.

BLE DFU

• Code download to FLASH.
• Works with PC and mobile devices with iOS/Android.

Bootloader was written taking into account the following aspects

• Usability.
  1. No special driver installation or admin rights should be required.
  2. The update process should be straight forward.
• Maintainability
  1. Open source community takes care of PC side tools. For eg: dfu-util is a cross platform tool.
  2. Use Google Chrome's WebUSB to update firmware. Sample implementation
• Size
• COINES on MCU.