tinytalk

A from-scratch Matter accessory node in portable C11, small enough for an nRF52833 (512 KB flash, 128 KB RAM). Apple Home commissions it over BLE; it runs over Thread. Not a certified Matter stack.

No OS, radio stack or crypto library: a port provides 48 functions (PORTING.md).

Does BLE commissioning (PASE), CASE, read, write, invoke, subscribe, Thread MTD with SRP, endpoints from a const table, a Door Lock cluster, three fabrics.

Does not certification, Wi-Fi, OTA, groups, door lock users or credentials, controller role.

52.6 KB flash, 20.9 KB RAM, LTO release build.

Use

Add as a Zephyr module, then:

CONFIG_TINYTALK=y             # node, port, settings storage
CONFIG_TINYTALK_BLE=y         # or tinyble's CONFIG_TINYBLE_TINYTALK
CONFIG_TINYTALK_THREAD=y      # or tinygrid's CONFIG_TINYGRID_MATTER
CONFIG_TINYTALK_DOOR_LOCK=y

SPAKE2+ backend: CONFIG_TINYTALK_SPAKE2P_OBERON, _MBEDTLS or _TINYPSA. Pass the endpoint table to matter_commission_init(). The door-lock sample lives in tinylock.

Test credentials

Attestation is connectedhomeip's public example (vendor 0xFFF1, product 0x8001). Anyone can sign as it, so every build is an uncertified test accessory. Setup code, the same on every device: 3650-503-5696. Your own: scripts/spake2p_verifier.py --passcode <p>.

Test

make test    # host; Mbed TLS 3.6, or SPAKE=fake for none
make asan    # the same, under ASan and UBSan
make seams   # the 48 symbols a port provides

Apache-2.0. Third-party data: NOTICE.

Unofficial. Not affiliated with, endorsed or certified by any company or standards body named here. Trademarks belong to their owners.