Add Raspberry Pi BTstack license (#1273)
diff --git a/src/rp2_common/pico_btstack/LICENSE.RP b/src/rp2_common/pico_btstack/LICENSE.RP
new file mode 100644
index 0000000..79e0080
--- /dev/null
+++ b/src/rp2_common/pico_btstack/LICENSE.RP
@@ -0,0 +1,30 @@
+“BlueKitchen” shall refer to BlueKitchen GmbH.
+“Raspberry Pi” shall refer to Raspberry Pi Ltd.
+“Product” shall refer to Raspberry Pi hardware products Raspberry Pi Pico W or Raspberry Pi Pico WH.
+“Customer” means any purchaser of a Product.
+“Customer Products” means products manufactured or distributed by Customers which use or are derived from Products.
+
+Raspberry Pi grants to the Customer a non-exclusive, non-transferable, non-sublicensable, irrevocable, perpetual
+and worldwide licence to use, copy, store, develop, modify, and transmit BTstack in order to use BTstack with or
+integrate BTstack into Products or Customer Products, and distribute BTstack as part of these Products or
+Customer Products or their related documentation or SDKs.
+
+All use of BTstack by the Customer is limited to Products or Customer Products, and the Customer represents and
+warrants that all such use shall be in compliance with the terms of this licence and all applicable laws and
+regulations, including but not limited to, copyright and other intellectual property laws and privacy regulations.
+
+BlueKitchen retains all rights, title and interest in, to and associated with BTstack and associated websites.
+Customer shall not take any action inconsistent with BlueKitchen’s ownership of BTstack, any associated services,
+websites and related content.
+
+There are no implied licences under the terms set forth in this licence, and any rights not expressly granted
+hereunder are reserved by BlueKitchen.
+
+BTSTACK IS PROVIDED BY RASPBERRY PI "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED TO THE FULLEST EXTENT
+PERMISSIBLE UNDER APPLICABLE LAW. IN NO EVENT SHALL RASPBERRY PI OR BLUEKITCHEN BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF BTSTACK, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
diff --git a/src/rp2_common/pico_btstack/doc.h b/src/rp2_common/pico_btstack/doc.h
index 88c0e36..f8db953 100644
--- a/src/rp2_common/pico_btstack/doc.h
+++ b/src/rp2_common/pico_btstack/doc.h
@@ -3,6 +3,8 @@
* \brief Integration/wrapper libraries for <a href="https://github.com/bluekitchen/btstack">BTstack</a>
* the documentation for which is <a href="https://bluekitchen-gmbh.com/btstack/">here</a>.
*
+ * A supplemental license for BTstack (in addition to the stock BTstack licensing terms) is provided <a href="https://github.com/raspberrypi/pico-sdk/blob/master/src/rp2_common/pico_btstack/LICENSE.RP>here</a>.
+ *
* The \c \b pico_btstack_ble library adds the support needed for Bluetooth Low Energy (BLE). The \c \b pico_btstack_classic library adds the support needed for Bluetooth Classic.
* You can link to either library individually, or to both libraries thus enabling dual-mode support provided by BTstack.
*
