MCUboot Over-the-Air Download (OAD)

The following sections aim to describe the lower layers of OAD software that are common across all protocol stack implementations. This includes the OAD image header, the flash layout, Secure Bootloader, and the oad image tool.

• Introduction
  • OAD Topology Overview
• OAD Storage & Security
  • OAD Storage
  • OAD Security
• MCUboot Overview
• MCUboot for On-Chip OAD (Stack Library)
• MCUboot OAD Image Header
  • MCUboot OAD Image Header
• Flash Layout for On-Chip OAD
  • Constraints and Requirements for On-chip OAD (stack library)
  • Internal Flash Memory Layout
• Flash Layout for Off-Chip OAD
  • Requirements and Constraints for Off-chip OAD
  • Internal Flash Memory Layout
  • External Flash Memory Layout
• Flash Layout for Dual-Image OAD
  • Constraints and Requirements for Dual-Image
  • Internal Flash Memory Layout
• Post-Build Script imgtool

The following sections aim to describe the BLE5-Stack specific application and profile layer of the OAD solution. The OAD application section will describe the BLE OAD process from a high level in terms of events and states, and the profile section will cover the actual structures that are sent over the air.

• OAD Application
  • OAD Software Architecture
  • OAD State Machine
    • Image Validation
    • Image Block Transfers
    • Completion of the OAD Process
• BLE-Stack OAD Profile
  • Over the Air Message Sequence
  • OAD Service (0xFFC0)
    • OAD Image Identify (0xFFC1)
    • OAD Image Block Characteristic (0xFFC2)
    • OAD Control Point Characteristic (0xFFC5)
      • Get OAD Block Size CMD/RSP
      • Disable OAD Image Block Write CMD/RSP
      • Get Software Version CMD/RSP
      • Get OAD Image Status CMD/RSP
      • Get Profile Version CMD/RSP
      • Get Device Type CMD/RSP
      • Image Block Write Char RSP
      • Erase All Bonds (CMD/RSP)
  • OAD Reset Service (0xFFD0)
    • OAD Start/Reset Characteristic (0xFFD1)
  • OAD Return Values
  • OAD Block Size Rules

The SimpleLink Academy OAD Fundamentals Module covers the out of the box demo for OAD using the BLE5-Stack. This lab contains the following step by step instructions:

• Anatomy of an OAD

  • Image Header

  • MCUboot Secure Bootloader

  • OAD Memory Layout

  • OAD Protocol/BLE Profile

• Setting up the OAD Environment

  • OAD Distributor Setup

  • OAD Target Setup

• Running the OAD Demo

  • Modifying the Image Version

  • OAD using BTool

  • OAD using SimpleLink™ Connect Mobile Application

• Debug an OAD Project