Over-the-Air_Download_for_CC254x.pdf

BLE Developer’s Guide for Over-the-Air Download for CC254x Version 1.3 Developer’s Guide for Over Air Download for CC254x 1. Purpose The purpose of this document is to enable a developer working with the TI BLE stack to successfully implement the proprietary TI OAD Profile functionality in any sample or proprietary application using the CC254x SOC. 2. Functional Overview OAD is an extended stack feature provided as a value-enhancing solution for updating code in deployed devices without the cost of physical access via a programming header . OAD is a client-server mechanism in which one device acts as the OAD image server (OAD manager) and the other device is the OAD image client (OAD target). 3. Assumptions 1. The BIM will never need to be updated. 4. Definitions, Abbreviations, Acronyms Term Definition API Application Programming Interface BIM Boot Image Manager – boot code that receives the reset interrupt vector and manages which valid image (Image-A or Image-B) shall run. BEM Boot Encrypted Manager – encrypted version of BIM EBL Encrypted Bootload – used to encrypt target images. DL Down-Loaded – an RC-image candidate that has been downloaded via the OAD procedure and stored in the non-volatile RC-image area. INSTALL_DIR The installation directory path of the protocol stack code specific to the version installed, but something like this: C:\Texas Instruments\BLE-CC254x-1.4.1.43908 ISR Interrupt Service Routine IVEC Interrupt Vectors – the table of ISR jump instructions to which the CPU physically vectors for ISR’s. NV Non-volatil