[nrf fromlist] tests: bluetooth: tester: Add PBP support

Implements the PBP commands of the BTP specs, in order to support
testing the PBP through autopts. This PR is in conjunction with the
following PR in AutoPTS: auto-pts/auto-pts#1356

Upstream PR #: 82654

Signed-off-by: Frode van der Meeren <[email protected]>

Author: Frodevan

tests/bluetooth/tester/overlay-le-audio.conf

@@ -166,3 +166,6 @@ CONFIG_BT_TBS_SUPPORTED_FEATURES=3
 
 # TMAP
 CONFIG_BT_TMAP=y
+
+# PBP
+CONFIG_BT_PBP=y

tests/bluetooth/tester/src/audio/CMakeLists.txt

@@ -67,3 +67,7 @@ endif()
 if(CONFIG_BT_TMAP)
     target_sources(app PRIVATE btp_tmap.c)
 endif()
+
+if(CONFIG_BT_PBP)
+    target_sources(app PRIVATE btp_pbp.c)
+endif()

tests/bluetooth/tester/src/audio/btp/btp_pbp.h

@@ -0,0 +1,46 @@
+/* btp_pbp.c - Bluetooth PBP Tester */
+
+/*
+ * Copyright (c) 2025 Nordic Semiconductor ASA
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/* This is main.h */
+
+#define BTP_PBP_READ_SUPPORTED_COMMANDS	0x01
+struct btp_pbp_read_supported_commands_rp {
+	uint8_t data[0];
+} __packed;
+
+#define BTP_PBP_SET_PUBLIC_BROADCAST_ANNOUNCEMENT 0x02
+struct btp_pbp_set_public_broadcast_announcement_cmd {
+	uint8_t features;
+	uint8_t metadata_len;
+	uint8_t metadata[];
+} __packed;
+
+#define BTP_PBP_SET_BROADCAST_NAME 0x03
+struct btp_pbp_set_broadcast_name_cmd {
+	uint8_t name_len;
+	uint8_t name[];
+} __packed;
+
+#define BTP_PBP_BROADCAST_SCAN_START 0x04
+struct btp_pbp_broadcast_scan_start_cmd {
+} __packed;
+
+#define BTP_PBP_BROADCAST_SCAN_STOP 0x05
+struct btp_pbp_broadcast_scan_stop_cmd {
+} __packed;
+
+#define BTP_PBP_EV_PUBLIC_BROADCAST_ANOUNCEMENT_FOUND 0x80
+struct btp_pbp_ev_public_broadcast_anouncement_found_rp {
+	bt_addr_le_t address;
+	uint8_t broadcast_id[BT_AUDIO_BROADCAST_ID_SIZE];
+	uint8_t advertiser_sid;
+	uint16_t padv_interval;
+	uint8_t pba_features;
+	uint8_t broadcast_name_len;
+	uint8_t broadcast_name[];
+} __packed;

tests/bluetooth/tester/src/audio/btp_cap.c

@@ -533,40 +533,37 @@ static int cap_broadcast_source_adv_setup(struct btp_bap_broadcast_local_source
 					  uint32_t *gap_settings)
 {
 	int err;
-	struct bt_le_adv_param param = *BT_LE_EXT_ADV_NCONN;
-	uint32_t broadcast_id;
 
-	NET_BUF_SIMPLE_DEFINE(ad_buf, BT_UUID_SIZE_16 + BT_AUDIO_BROADCAST_ID_SIZE);
 	NET_BUF_SIMPLE_DEFINE(base_buf, 128);
 
 	/* Broadcast Audio Streaming Endpoint advertising data */
-	struct bt_data base_ad[2];
 	struct bt_data per_ad;
 
-	err = bt_rand(&broadcast_id, BT_AUDIO_BROADCAST_ID_SIZE);
-	if (err) {
-		printk("Unable to generate broadcast ID: %d\n", err);
-
-		return -EINVAL;
-	}
-
-	*gap_settings = BIT(BTP_GAP_SETTINGS_DISCOVERABLE) |
-			BIT(BTP_GAP_SETTINGS_EXTENDED_ADVERTISING);
-	/* Setup extended advertising data */
-	net_buf_simple_add_le16(&ad_buf, BT_UUID_BROADCAST_AUDIO_VAL);
-	net_buf_simple_add_le24(&ad_buf, source->broadcast_id);
-	base_ad[0].type = BT_DATA_SVC_DATA16;
-	base_ad[0].data_len = ad_buf.len;
-	base_ad[0].data = ad_buf.data;
-	base_ad[1].type = BT_DATA_NAME_COMPLETE;
-	base_ad[1].data_len = sizeof(CONFIG_BT_DEVICE_NAME) - 1;
-	base_ad[1].data = CONFIG_BT_DEVICE_NAME;
-	err = tester_gap_create_adv_instance(&param, BTP_GAP_ADDR_TYPE_IDENTITY, base_ad, 2, NULL,
-					     0, gap_settings);
-	if (err != 0) {
-		LOG_DBG("Failed to create extended advertising instance: %d", err);
-
-		return -EINVAL;
+	/* A more specialized adv instance may already have been created by another btp module */
+	if (tester_gap_ext_adv_get() == NULL) {
+		struct bt_le_adv_param param = *BT_LE_EXT_ADV_NCONN;
+		struct bt_data base_ad[2];
+
+		NET_BUF_SIMPLE_DEFINE(ad_buf, BT_UUID_SIZE_16 + BT_AUDIO_BROADCAST_ID_SIZE);
+		*gap_settings = BIT(BTP_GAP_SETTINGS_DISCOVERABLE) |
+				BIT(BTP_GAP_SETTINGS_EXTENDED_ADVERTISING);
+		/* Setup extended advertising data */
+		net_buf_simple_add_le16(&ad_buf, BT_UUID_BROADCAST_AUDIO_VAL);
+		net_buf_simple_add_le24(&ad_buf, source->broadcast_id);
+		base_ad[0].type = BT_DATA_SVC_DATA16;
+		base_ad[0].data_len = ad_buf.len;
+		base_ad[0].data = ad_buf.data;
+		base_ad[1].type = BT_DATA_NAME_COMPLETE;
+		base_ad[1].data_len = sizeof(CONFIG_BT_DEVICE_NAME) - 1;
+		base_ad[1].data = CONFIG_BT_DEVICE_NAME;
+
+		err = tester_gap_create_adv_instance(&param, BTP_GAP_ADDR_TYPE_IDENTITY, base_ad,
+						     2, NULL, 0, gap_settings);
+		if (err != 0) {
+			LOG_DBG("Failed to create extended advertising instance: %d", err);
+
+			return -EINVAL;
+		}
 	}
 
 	err = tester_gap_padv_configure(BT_LE_PER_ADV_PARAM(BT_GAP_PER_ADV_FAST_INT_MIN_2,