About

heliaCORE NN is published by Ambiq Micro, Inc. and is built on Arm CMSIS-NN.

Original work

Arm CMSIS-NN, Copyright Arm Limited and/or its affiliates <open-source-office@arm.com>. Source: github.com/ARM-software/CMSIS-NN. License: Apache License, Version 2.0, reproduced in LICENSES/Apache-2.0.txt.

Modifications and additions

Modifications to upstream files and all newly added files in this fork are Copyright (c) 2024-2026 Ambiq Micro, Inc. Per-file copyright and license is declared via SPDX headers (SPDX-FileCopyrightText: and SPDX-License-Identifier:) at the top of each source file.

Licensing summary

Two licenses apply across this repository.

• Files originating from upstream Arm CMSIS-NN remain under the Apache License, Version 2.0. They carry both the original Arm copyright notice and an additional Ambiq copyright notice for the modifications. SPDX identifier: Apache-2.0.
• New files authored by Ambiq for this fork are distributed under the Ambiq Apollo SDK License, which restricts use to software running on Ambiq-manufactured CPUs. See LICENSE in the repository root. SPDX identifier: LicenseRef-Ambiq-Apollo-SDK.

When this repository is distributed as a whole, the Ambiq Apollo SDK License applies to the combined work; the Apache-2.0 license continues to apply to the upstream-derived files individually as required by Apache-2.0 section 4(b).