OTA Firmware Update (over BLE)

This project demonstrates how to update the code of a running application on the CC1350 Texas Instruments board via Bluetooth Low Energy (BLE).

The project consists of:

• A sample application (cc1350-ota).
• GATT client - a utility used to send the updated app over BLE.

Prerequisites

• CC1350 Texas Instruments board
• Code Composer Studio (CCS)
• simplelink_cc13x0_sdk

How to build

1. Clone this repository
2. Open CCS
   1. Import the BLE stack project from the TI SDK folder (<ti>/simplelink_cc13x0_sdk_1_60_00_21/examples/rtos/CC1350_LAUNCHXL/blestack/simple_peripheral/tirtos/ccs)
   2. Import the cc1350-ota project (from this repository)
   3. Build the stack project
   4. Build the app project
3. OTA client
   1. On Windows - build the gattclient C# client
   2. On Linux:
      1. Install dependencies: sudo dnf install python3-pyelftools bluez

How to run

1. Flash the projects onto the board (via Eclipse / Uniflash)

   1. Flash the built "stack" project onto the board
   2. Flash the built "app" project onto the board

2. Run the GATT client The GATT client accepts a path to a .json file, and transmits the application blob (metadata + code + data) onto the board via BLE. The JSON file (ota.json) can be located under the Debug/ directory of the app project.

   1. On Windows: run the gattclient.exe <path to json>
   2. On Linux:
      1. Convert the JSON artifact into a series of blobs: ./prepare_blobs.py Debug/ota.json. This will create $PWD/ota_blobs directory.
      2. Discover the MAC address of your CC1350 board, easy way to do this is with sudo hcitool lescan -i hciXX
      3. Push the OTA blobs to the board: ./push_ota.sh BLE_MAC_ADDR DIR_WITH_BLOBS

License

BSD