Texas Instruments platform overview#

The Texas Instruments Matter platform is based on the TI SimpleLink™ SDK.

The following diagram is a simplified representation of a Matter application which is built on the TI Platform.

Bluetooth LE and Thread stacks#

In the TI example applications the Bluetooth Low Energy protocol is used to provision the Thread protocol to enable Matter communication. Then Thread is used for IP communication with other Matter devices.

The TI applications leverage the Bluetooth Low Energy stack on the CC13XX and CC26XX families. This Bluetooth LE software is distributed in binary form within the TI SimpleLink SDK. The Bluetooth LE stack leverages code that is present in the device ROM for certain common Bluetooth LE operations.

These applications leverage the OpenThread stack available within the Matter repository for Thread communication. Platform support source is built from the SimpleLink SDK.

These connection protocols can be run concurrently by using the Texas Instruments Dynamic Multi-protocol Manager.

LwIP stack#

The Lightweight IP stack interfaces with the OpenThread stack to offer standard IP connectivity protocols that OpenThread does not natively support. This offers a standard socket based interface to the Matter platform.

MbedTLS#

The MbedTLS library is used by OpenThread and Matter for a wide variety of protocols. This ranges from basic AES and SHA to cryptographic protocols like ECDSA and ECDH.

The MbedTLS library is hardware accelerated using the TI SimpleLink SDK drivers. This is achieved through the usage of _ALT defines in the MbedTLS configuration file.

Matter Stack to TI Platform Interface#

Matter Stack interacts with LwIP, OpenThread, and the TI-BLE stack to achieve the protocol and application functionality. A Bluetooth LE profile is registered with the TI-BLE stack to enable provisioning and configuration. Once the device is provisioned Matter will configure the OpenThread interface to connect to an existing Thread network or to start its own network. From there the Matter IP messages are sent to the LwIP stack to be routed to the OpenThread stack for transmission. Matter Impl (Implementation) layer acts as an interface between Matter stack and the TI platform components such as BLE stack, OpenThread, FreeRTOS. It also supports components such as connectivity manager that provides the implementation for functionality required by Matter stack. Overall, applications generally only need to interface with the Cluster Library from Matter. The transport of messages and configuration of the device is all handled by the platform implementation files.

Matter Development Resources#

Below are several resources available for Matter development:

Matter Example Applications#

Sample Matter applications are provided for the TI platform. These can be used as reference for your own application.

Build system#

The TI platform uses GN to generate ninja build scripts. Build files have already been written to build and link the TI specific code within the SimpleLink SDK.

CC2674 Migration#

For instructions on how to migrate the CC1354P10-6 examples to either the CC2674P10 or the CC2674R10, please refer to the guide linked below.

Factory Data Programming Tool#

For instructions on how to program custom factory data on TI devices, please refer to the guide linked below.

Intermittently Connected Devices#

For instructions on how to use the Matter ICD feature on TI devices, please refer to the guide linked below.

Matter OpenThread Library Configuration#

For instructions on how to configure the OpenThread build configuration for a Matter application, please refer to the guide linked below.

TI Support#

For technical support, please consider creating a post on TI’s E2E forum. Additionally, we welcome any feedback.