diff --git a/examples/speaker/src/dev_att.rs b/examples/speaker/src/dev_att.rs
new file mode 100644
index 0000000..a16d53f
--- /dev/null
+++ b/examples/speaker/src/dev_att.rs
@@ -0,0 +1,165 @@
+/*
+ *
+ *    Copyright (c) 2020-2022 Project CHIP Authors
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+use matter::data_model::sdm::dev_att::{DataType, DevAttDataFetcher};
+use matter::error::Error;
+
+pub struct HardCodedDevAtt {}
+
+impl HardCodedDevAtt {
+    pub fn new() -> Self {
+        Self {}
+    }
+}
+
+// credentials/examples/ExamplePAI.cpp FFF1
+const PAI_CERT: [u8; 463] = [
+    0x30, 0x82, 0x01, 0xcb, 0x30, 0x82, 0x01, 0x71, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x08, 0x56,
+    0xad, 0x82, 0x22, 0xad, 0x94, 0x5b, 0x64, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d,
+    0x04, 0x03, 0x02, 0x30, 0x30, 0x31, 0x18, 0x30, 0x16, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x0f,
+    0x4d, 0x61, 0x74, 0x74, 0x65, 0x72, 0x20, 0x54, 0x65, 0x73, 0x74, 0x20, 0x50, 0x41, 0x41, 0x31,
+    0x14, 0x30, 0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01, 0x04, 0x01, 0x82, 0xa2, 0x7c, 0x02, 0x01, 0x0c,
+    0x04, 0x46, 0x46, 0x46, 0x31, 0x30, 0x20, 0x17, 0x0d, 0x32, 0x32, 0x30, 0x32, 0x30, 0x35, 0x30,
+    0x30, 0x30, 0x30, 0x30, 0x30, 0x5a, 0x18, 0x0f, 0x39, 0x39, 0x39, 0x39, 0x31, 0x32, 0x33, 0x31,
+    0x32, 0x33, 0x35, 0x39, 0x35, 0x39, 0x5a, 0x30, 0x3d, 0x31, 0x25, 0x30, 0x23, 0x06, 0x03, 0x55,
+    0x04, 0x03, 0x0c, 0x1c, 0x4d, 0x61, 0x74, 0x74, 0x65, 0x72, 0x20, 0x44, 0x65, 0x76, 0x20, 0x50,
+    0x41, 0x49, 0x20, 0x30, 0x78, 0x46, 0x46, 0x46, 0x31, 0x20, 0x6e, 0x6f, 0x20, 0x50, 0x49, 0x44,
+    0x31, 0x14, 0x30, 0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01, 0x04, 0x01, 0x82, 0xa2, 0x7c, 0x02, 0x01,
+    0x0c, 0x04, 0x46, 0x46, 0x46, 0x31, 0x30, 0x59, 0x30, 0x13, 0x06, 0x07, 0x2a, 0x86, 0x48, 0xce,
+    0x3d, 0x02, 0x01, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07, 0x03, 0x42, 0x00,
+    0x04, 0x41, 0x9a, 0x93, 0x15, 0xc2, 0x17, 0x3e, 0x0c, 0x8c, 0x87, 0x6d, 0x03, 0xcc, 0xfc, 0x94,
+    0x48, 0x52, 0x64, 0x7f, 0x7f, 0xec, 0x5e, 0x50, 0x82, 0xf4, 0x05, 0x99, 0x28, 0xec, 0xa8, 0x94,
+    0xc5, 0x94, 0x15, 0x13, 0x09, 0xac, 0x63, 0x1e, 0x4c, 0xb0, 0x33, 0x92, 0xaf, 0x68, 0x4b, 0x0b,
+    0xaf, 0xb7, 0xe6, 0x5b, 0x3b, 0x81, 0x62, 0xc2, 0xf5, 0x2b, 0xf9, 0x31, 0xb8, 0xe7, 0x7a, 0xaa,
+    0x82, 0xa3, 0x66, 0x30, 0x64, 0x30, 0x12, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x01, 0x01, 0xff, 0x04,
+    0x08, 0x30, 0x06, 0x01, 0x01, 0xff, 0x02, 0x01, 0x00, 0x30, 0x0e, 0x06, 0x03, 0x55, 0x1d, 0x0f,
+    0x01, 0x01, 0xff, 0x04, 0x04, 0x03, 0x02, 0x01, 0x06, 0x30, 0x1d, 0x06, 0x03, 0x55, 0x1d, 0x0e,
+    0x04, 0x16, 0x04, 0x14, 0x63, 0x54, 0x0e, 0x47, 0xf6, 0x4b, 0x1c, 0x38, 0xd1, 0x38, 0x84, 0xa4,
+    0x62, 0xd1, 0x6c, 0x19, 0x5d, 0x8f, 0xfb, 0x3c, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04,
+    0x18, 0x30, 0x16, 0x80, 0x14, 0x6a, 0xfd, 0x22, 0x77, 0x1f, 0x51, 0x1f, 0xec, 0xbf, 0x16, 0x41,
+    0x97, 0x67, 0x10, 0xdc, 0xdc, 0x31, 0xa1, 0x71, 0x7e, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48,
+    0xce, 0x3d, 0x04, 0x03, 0x02, 0x03, 0x48, 0x00, 0x30, 0x45, 0x02, 0x21, 0x00, 0xb2, 0xef, 0x27,
+    0xf4, 0x9a, 0xe9, 0xb5, 0x0f, 0xb9, 0x1e, 0xea, 0xc9, 0x4c, 0x4d, 0x0b, 0xdb, 0xb8, 0xd7, 0x92,
+    0x9c, 0x6c, 0xb8, 0x8f, 0xac, 0xe5, 0x29, 0x36, 0x8d, 0x12, 0x05, 0x4c, 0x0c, 0x02, 0x20, 0x65,
+    0x5d, 0xc9, 0x2b, 0x86, 0xbd, 0x90, 0x98, 0x82, 0xa6, 0xc6, 0x21, 0x77, 0xb8, 0x25, 0xd7, 0xd0,
+    0x5e, 0xdb, 0xe7, 0xc2, 0x2f, 0x9f, 0xea, 0x71, 0x22, 0x0e, 0x7e, 0xa7, 0x03, 0xf8, 0x91,
+];
+
+// credentials/examples/ExampleDACs.cpp FFF1-8000-0002-Cert
+const DAC_CERT: [u8; 492] = [
+    0x30, 0x82, 0x01, 0xe8, 0x30, 0x82, 0x01, 0x8e, 0xa0, 0x03, 0x02, 0x01, 0x02, 0x02, 0x08, 0x52,
+    0x72, 0x4d, 0x21, 0xe2, 0xc1, 0x74, 0xaf, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d,
+    0x04, 0x03, 0x02, 0x30, 0x3d, 0x31, 0x25, 0x30, 0x23, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c, 0x1c,
+    0x4d, 0x61, 0x74, 0x74, 0x65, 0x72, 0x20, 0x44, 0x65, 0x76, 0x20, 0x50, 0x41, 0x49, 0x20, 0x30,
+    0x78, 0x46, 0x46, 0x46, 0x31, 0x20, 0x6e, 0x6f, 0x20, 0x50, 0x49, 0x44, 0x31, 0x14, 0x30, 0x12,
+    0x06, 0x0a, 0x2b, 0x06, 0x01, 0x04, 0x01, 0x82, 0xa2, 0x7c, 0x02, 0x01, 0x0c, 0x04, 0x46, 0x46,
+    0x46, 0x31, 0x30, 0x20, 0x17, 0x0d, 0x32, 0x32, 0x30, 0x32, 0x30, 0x35, 0x30, 0x30, 0x30, 0x30,
+    0x30, 0x30, 0x5a, 0x18, 0x0f, 0x39, 0x39, 0x39, 0x39, 0x31, 0x32, 0x33, 0x31, 0x32, 0x33, 0x35,
+    0x39, 0x35, 0x39, 0x5a, 0x30, 0x53, 0x31, 0x25, 0x30, 0x23, 0x06, 0x03, 0x55, 0x04, 0x03, 0x0c,
+    0x1c, 0x4d, 0x61, 0x74, 0x74, 0x65, 0x72, 0x20, 0x44, 0x65, 0x76, 0x20, 0x44, 0x41, 0x43, 0x20,
+    0x30, 0x78, 0x46, 0x46, 0x46, 0x31, 0x2f, 0x30, 0x78, 0x38, 0x30, 0x30, 0x32, 0x31, 0x14, 0x30,
+    0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01, 0x04, 0x01, 0x82, 0xa2, 0x7c, 0x02, 0x01, 0x0c, 0x04, 0x46,
+    0x46, 0x46, 0x31, 0x31, 0x14, 0x30, 0x12, 0x06, 0x0a, 0x2b, 0x06, 0x01, 0x04, 0x01, 0x82, 0xa2,
+    0x7c, 0x02, 0x02, 0x0c, 0x04, 0x38, 0x30, 0x30, 0x32, 0x30, 0x59, 0x30, 0x13, 0x06, 0x07, 0x2a,
+    0x86, 0x48, 0xce, 0x3d, 0x02, 0x01, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x03, 0x01, 0x07,
+    0x03, 0x42, 0x00, 0x04, 0xda, 0x93, 0xf1, 0x67, 0x36, 0x25, 0x67, 0x50, 0xd9, 0x03, 0xb0, 0x34,
+    0xba, 0x45, 0x88, 0xab, 0xaf, 0x58, 0x95, 0x4f, 0x77, 0xaa, 0x9f, 0xd9, 0x98, 0x9d, 0xfd, 0x40,
+    0x0d, 0x7a, 0xb3, 0xfd, 0xc9, 0x75, 0x3b, 0x3b, 0x92, 0x1b, 0x29, 0x4c, 0x95, 0x0f, 0xd9, 0xd2,
+    0x80, 0xd1, 0x4c, 0x43, 0x86, 0x2f, 0x16, 0xdc, 0x85, 0x4b, 0x00, 0xed, 0x39, 0xe7, 0x50, 0xba,
+    0xbf, 0x1d, 0xc4, 0xca, 0xa3, 0x60, 0x30, 0x5e, 0x30, 0x0c, 0x06, 0x03, 0x55, 0x1d, 0x13, 0x01,
+    0x01, 0xff, 0x04, 0x02, 0x30, 0x00, 0x30, 0x0e, 0x06, 0x03, 0x55, 0x1d, 0x0f, 0x01, 0x01, 0xff,
+    0x04, 0x04, 0x03, 0x02, 0x07, 0x80, 0x30, 0x1d, 0x06, 0x03, 0x55, 0x1d, 0x0e, 0x04, 0x16, 0x04,
+    0x14, 0xef, 0x06, 0x56, 0x11, 0x9c, 0x1c, 0x91, 0xa7, 0x9a, 0x94, 0xe6, 0xdc, 0xf3, 0x79, 0x79,
+    0xdb, 0xd0, 0x7f, 0xf8, 0xa3, 0x30, 0x1f, 0x06, 0x03, 0x55, 0x1d, 0x23, 0x04, 0x18, 0x30, 0x16,
+    0x80, 0x14, 0x63, 0x54, 0x0e, 0x47, 0xf6, 0x4b, 0x1c, 0x38, 0xd1, 0x38, 0x84, 0xa4, 0x62, 0xd1,
+    0x6c, 0x19, 0x5d, 0x8f, 0xfb, 0x3c, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce, 0x3d, 0x04,
+    0x03, 0x02, 0x03, 0x48, 0x00, 0x30, 0x45, 0x02, 0x20, 0x46, 0x86, 0x81, 0x07, 0x33, 0xbf, 0x0d,
+    0xc8, 0xff, 0x4c, 0xb5, 0x14, 0x5a, 0x6b, 0xfa, 0x1a, 0xec, 0xff, 0xa8, 0xb6, 0xda, 0xb6, 0xc3,
+    0x51, 0xaa, 0xee, 0xcd, 0xaf, 0xb8, 0xbe, 0x95, 0x7d, 0x02, 0x21, 0x00, 0xe8, 0xc2, 0x8d, 0x6b,
+    0xfc, 0xc8, 0x7a, 0x7d, 0x54, 0x2e, 0xad, 0x6e, 0xda, 0xca, 0x14, 0x8d, 0x5f, 0xa5, 0x06, 0x1e,
+    0x51, 0x7c, 0xbe, 0x4f, 0x24, 0xa7, 0x20, 0xe1, 0xc0, 0x59, 0xde, 0x1a,
+];
+
+const DAC_PUBKEY: [u8; 65] = [
+    0x04, 0xda, 0x93, 0xf1, 0x67, 0x36, 0x25, 0x67, 0x50, 0xd9, 0x03, 0xb0, 0x34, 0xba, 0x45, 0x88,
+    0xab, 0xaf, 0x58, 0x95, 0x4f, 0x77, 0xaa, 0x9f, 0xd9, 0x98, 0x9d, 0xfd, 0x40, 0x0d, 0x7a, 0xb3,
+    0xfd, 0xc9, 0x75, 0x3b, 0x3b, 0x92, 0x1b, 0x29, 0x4c, 0x95, 0x0f, 0xd9, 0xd2, 0x80, 0xd1, 0x4c,
+    0x43, 0x86, 0x2f, 0x16, 0xdc, 0x85, 0x4b, 0x00, 0xed, 0x39, 0xe7, 0x50, 0xba, 0xbf, 0x1d, 0xc4,
+    0xca,
+];
+
+const DAC_PRIVKEY: [u8; 32] = [
+    0xda, 0xf2, 0x1a, 0x7e, 0xa4, 0x7a, 0x70, 0x48, 0x02, 0xa7, 0xe6, 0x6c, 0x50, 0xeb, 0x10, 0xba,
+    0xc3, 0xbd, 0xd1, 0x68, 0x80, 0x39, 0x80, 0x66, 0xff, 0xda, 0xd7, 0xf5, 0x20, 0x98, 0xb6, 0x85,
+];
+
+//
+const CERT_DECLARATION: [u8; 541] = [
+    0x30, 0x82, 0x02, 0x19, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x02, 0xa0,
+    0x82, 0x02, 0x0a, 0x30, 0x82, 0x02, 0x06, 0x02, 0x01, 0x03, 0x31, 0x0d, 0x30, 0x0b, 0x06, 0x09,
+    0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x30, 0x82, 0x01, 0x71, 0x06, 0x09, 0x2a,
+    0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x07, 0x01, 0xa0, 0x82, 0x01, 0x62, 0x04, 0x82, 0x01, 0x5e,
+    0x15, 0x24, 0x00, 0x01, 0x25, 0x01, 0xf1, 0xff, 0x36, 0x02, 0x05, 0x00, 0x80, 0x05, 0x01, 0x80,
+    0x05, 0x02, 0x80, 0x05, 0x03, 0x80, 0x05, 0x04, 0x80, 0x05, 0x05, 0x80, 0x05, 0x06, 0x80, 0x05,
+    0x07, 0x80, 0x05, 0x08, 0x80, 0x05, 0x09, 0x80, 0x05, 0x0a, 0x80, 0x05, 0x0b, 0x80, 0x05, 0x0c,
+    0x80, 0x05, 0x0d, 0x80, 0x05, 0x0e, 0x80, 0x05, 0x0f, 0x80, 0x05, 0x10, 0x80, 0x05, 0x11, 0x80,
+    0x05, 0x12, 0x80, 0x05, 0x13, 0x80, 0x05, 0x14, 0x80, 0x05, 0x15, 0x80, 0x05, 0x16, 0x80, 0x05,
+    0x17, 0x80, 0x05, 0x18, 0x80, 0x05, 0x19, 0x80, 0x05, 0x1a, 0x80, 0x05, 0x1b, 0x80, 0x05, 0x1c,
+    0x80, 0x05, 0x1d, 0x80, 0x05, 0x1e, 0x80, 0x05, 0x1f, 0x80, 0x05, 0x20, 0x80, 0x05, 0x21, 0x80,
+    0x05, 0x22, 0x80, 0x05, 0x23, 0x80, 0x05, 0x24, 0x80, 0x05, 0x25, 0x80, 0x05, 0x26, 0x80, 0x05,
+    0x27, 0x80, 0x05, 0x28, 0x80, 0x05, 0x29, 0x80, 0x05, 0x2a, 0x80, 0x05, 0x2b, 0x80, 0x05, 0x2c,
+    0x80, 0x05, 0x2d, 0x80, 0x05, 0x2e, 0x80, 0x05, 0x2f, 0x80, 0x05, 0x30, 0x80, 0x05, 0x31, 0x80,
+    0x05, 0x32, 0x80, 0x05, 0x33, 0x80, 0x05, 0x34, 0x80, 0x05, 0x35, 0x80, 0x05, 0x36, 0x80, 0x05,
+    0x37, 0x80, 0x05, 0x38, 0x80, 0x05, 0x39, 0x80, 0x05, 0x3a, 0x80, 0x05, 0x3b, 0x80, 0x05, 0x3c,
+    0x80, 0x05, 0x3d, 0x80, 0x05, 0x3e, 0x80, 0x05, 0x3f, 0x80, 0x05, 0x40, 0x80, 0x05, 0x41, 0x80,
+    0x05, 0x42, 0x80, 0x05, 0x43, 0x80, 0x05, 0x44, 0x80, 0x05, 0x45, 0x80, 0x05, 0x46, 0x80, 0x05,
+    0x47, 0x80, 0x05, 0x48, 0x80, 0x05, 0x49, 0x80, 0x05, 0x4a, 0x80, 0x05, 0x4b, 0x80, 0x05, 0x4c,
+    0x80, 0x05, 0x4d, 0x80, 0x05, 0x4e, 0x80, 0x05, 0x4f, 0x80, 0x05, 0x50, 0x80, 0x05, 0x51, 0x80,
+    0x05, 0x52, 0x80, 0x05, 0x53, 0x80, 0x05, 0x54, 0x80, 0x05, 0x55, 0x80, 0x05, 0x56, 0x80, 0x05,
+    0x57, 0x80, 0x05, 0x58, 0x80, 0x05, 0x59, 0x80, 0x05, 0x5a, 0x80, 0x05, 0x5b, 0x80, 0x05, 0x5c,
+    0x80, 0x05, 0x5d, 0x80, 0x05, 0x5e, 0x80, 0x05, 0x5f, 0x80, 0x05, 0x60, 0x80, 0x05, 0x61, 0x80,
+    0x05, 0x62, 0x80, 0x05, 0x63, 0x80, 0x18, 0x24, 0x03, 0x16, 0x2c, 0x04, 0x13, 0x5a, 0x49, 0x47,
+    0x32, 0x30, 0x31, 0x34, 0x32, 0x5a, 0x42, 0x33, 0x33, 0x30, 0x30, 0x30, 0x33, 0x2d, 0x32, 0x34,
+    0x24, 0x05, 0x00, 0x24, 0x06, 0x00, 0x25, 0x07, 0x94, 0x26, 0x24, 0x08, 0x00, 0x18, 0x31, 0x7d,
+    0x30, 0x7b, 0x02, 0x01, 0x03, 0x80, 0x14, 0x62, 0xfa, 0x82, 0x33, 0x59, 0xac, 0xfa, 0xa9, 0x96,
+    0x3e, 0x1c, 0xfa, 0x14, 0x0a, 0xdd, 0xf5, 0x04, 0xf3, 0x71, 0x60, 0x30, 0x0b, 0x06, 0x09, 0x60,
+    0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x30, 0x0a, 0x06, 0x08, 0x2a, 0x86, 0x48, 0xce,
+    0x3d, 0x04, 0x03, 0x02, 0x04, 0x47, 0x30, 0x45, 0x02, 0x20, 0x24, 0xe5, 0xd1, 0xf4, 0x7a, 0x7d,
+    0x7b, 0x0d, 0x20, 0x6a, 0x26, 0xef, 0x69, 0x9b, 0x7c, 0x97, 0x57, 0xb7, 0x2d, 0x46, 0x90, 0x89,
+    0xde, 0x31, 0x92, 0xe6, 0x78, 0xc7, 0x45, 0xe7, 0xf6, 0x0c, 0x02, 0x21, 0x00, 0xf8, 0xaa, 0x2f,
+    0xa7, 0x11, 0xfc, 0xb7, 0x9b, 0x97, 0xe3, 0x97, 0xce, 0xda, 0x66, 0x7b, 0xae, 0x46, 0x4e, 0x2b,
+    0xd3, 0xff, 0xdf, 0xc3, 0xcc, 0xed, 0x7a, 0xa8, 0xca, 0x5f, 0x4c, 0x1a, 0x7c,
+];
+
+impl DevAttDataFetcher for HardCodedDevAtt {
+    fn get_devatt_data(&self, data_type: DataType, data: &mut [u8]) -> Result<usize, Error> {
+        let src = match data_type {
+            DataType::CertDeclaration => &CERT_DECLARATION[..],
+            DataType::PAI => &PAI_CERT[..],
+            DataType::DAC => &DAC_CERT[..],
+            DataType::DACPubKey => &DAC_PUBKEY[..],
+            DataType::DACPrivKey => &DAC_PRIVKEY[..],
+        };
+        if src.len() <= data.len() {
+            let data = &mut data[0..src.len()];
+            data.copy_from_slice(src);
+            Ok(src.len())
+        } else {
+            Err(Error::NoSpace)
+        }
+    }
+}
diff --git a/examples/speaker/src/lib.rs b/examples/speaker/src/lib.rs
new file mode 100644
index 0000000..43ca1b1
--- /dev/null
+++ b/examples/speaker/src/lib.rs
@@ -0,0 +1,18 @@
+/*
+ *
+ *    Copyright (c) 2020-2022 Project CHIP Authors
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+pub mod dev_att;
diff --git a/examples/speaker/src/main.rs b/examples/speaker/src/main.rs
new file mode 100644
index 0000000..de2a605
--- /dev/null
+++ b/examples/speaker/src/main.rs
@@ -0,0 +1,69 @@
+/*
+ *
+ *    Copyright (c) 2020-2022 Project CHIP Authors
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+mod dev_att;
+use matter::core::{self, CommissioningData};
+use matter::data_model::cluster_basic_information::BasicInfoConfig;
+use matter::data_model::cluster_media_playback::{Commands, MediaPlaybackCluster};
+use matter::data_model::device_types::DEV_TYPE_ON_SMART_SPEAKER;
+use matter::secure_channel::spake2p::VerifierData;
+
+fn main() {
+    env_logger::init();
+    let comm_data = CommissioningData {
+        // TODO: Hard-coded for now
+        verifier: VerifierData::new_with_pw(123456),
+        discriminator: 250,
+    };
+
+    // vid/pid should match those in the DAC
+    let dev_info = BasicInfoConfig {
+        vid: 0xFFF1,
+        pid: 0x8002,
+        hw_ver: 2,
+        sw_ver: 1,
+        sw_ver_str: "1".to_string(),
+        serial_no: "aabbccdd".to_string(),
+        device_name: "Smart Speaker".to_string(),
+    };
+    let dev_att = Box::new(dev_att::HardCodedDevAtt::new());
+
+    let mut matter = core::Matter::new(dev_info, dev_att, comm_data).unwrap();
+    let dm = matter.get_data_model();
+    {
+        let mut node = dm.node.write().unwrap();
+
+        let endpoint_audio = node.add_endpoint(DEV_TYPE_ON_SMART_SPEAKER).unwrap();
+        let mut media_playback_cluster = MediaPlaybackCluster::new().unwrap();
+
+        // Add some callbacks
+        let play_callback = Box::new(|| log::info!("Comamnd [Play] handled with callback."));
+        let pause_callback = Box::new(|| log::info!("Comamnd [Pause] handled with callback."));
+        let stop_callback = Box::new(|| log::info!("Comamnd [Stop] handled with callback."));
+        let start_over_callback =
+            Box::new(|| log::info!("Comamnd [StartOver] handled with callback."));
+        media_playback_cluster.add_callback(Commands::Play, play_callback);
+        media_playback_cluster.add_callback(Commands::Pause, pause_callback);
+        media_playback_cluster.add_callback(Commands::Stop, stop_callback);
+        media_playback_cluster.add_callback(Commands::StartOver, start_over_callback);
+
+        node.add_cluster(endpoint_audio, media_playback_cluster)
+            .unwrap();
+        println!("Added Speaker type at endpoint id: {}", endpoint_audio)
+    }
+    matter.start_daemon().unwrap();
+}
diff --git a/matter/Cargo.toml b/matter/Cargo.toml
index 11bc35f..5a6787f 100644
--- a/matter/Cargo.toml
+++ b/matter/Cargo.toml
@@ -64,3 +64,8 @@ libmdns = { version = "0.7.4" }
 [[example]]
 name = "onoff_light"
 path = "../examples/onoff_light/src/main.rs"
+
+
+[[example]]
+name = "speaker"
+path = "../examples/speaker/src/main.rs"