bluetooth: samples: rrsp: Add CS procedure parameters

Otherwise this device responds with some default parameters when
negotiating parameters with the other device, which may be hard to
understand. Sending procedure parameters on both sides is needed,
for instance, to make sure both sides send a desired tx_power_delta.

Signed-off-by: Olivier Lesage <[email protected]>

Author: olivier-le-sage

samples/bluetooth/channel_sounding_ras_reflector/src/main.c

@@ -25,6 +25,7 @@ LOG_MODULE_REGISTER(app_main, LOG_LEVEL_INF);
 #define CON_STATUS_LED DK_LED1
 
 static K_SEM_DEFINE(sem_connected, 0, 1);
+static K_SEM_DEFINE(sem_config, 0, 1);
 
 static struct bt_conn *connection;
 
@@ -87,6 +88,7 @@ static void config_create_cb(struct bt_conn *conn,
 
 	if (status == BT_HCI_ERR_SUCCESS) {
 		LOG_INF("CS config creation complete. ID: %d", config->id);
+		k_sem_give(&sem_config);
 	} else {
 		LOG_WRN("CS config creation failed. (HCI status 0x%02x)", status);
 	}
@@ -178,6 +180,31 @@ int main(void)
 		if (err) {
 			LOG_ERR("Failed to configure default CS settings (err %d)", err);
 		}
+
+		k_sem_take(&sem_config, K_FOREVER);
+
+		const struct bt_le_cs_set_procedure_parameters_param procedure_params = {
+			.config_id = 0,
+			.max_procedure_len = 1000,
+			.min_procedure_interval = 1,
+			.max_procedure_interval = 100,
+			.max_procedure_count = 0,
+			.min_subevent_len = 10000,
+			.max_subevent_len = 75000,
+			.tone_antenna_config_selection = BT_LE_CS_TONE_ANTENNA_CONFIGURATION_A1_B1,
+			.phy = BT_LE_CS_PROCEDURE_PHY_2M,
+			.tx_power_delta = 0x80,
+			.preferred_peer_antenna = BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_1,
+			.snr_control_initiator = BT_LE_CS_SNR_CONTROL_NOT_USED,
+			.snr_control_reflector = BT_LE_CS_SNR_CONTROL_NOT_USED,
+		};
+
+		err = bt_le_cs_set_procedure_parameters(connection, &procedure_params);
+		if (err) {
+			LOG_ERR("Failed to set procedure parameters (err %d)", err);
+			return 0;
+		}
+
 	}
 
 	return 0;