Allow setting service UUID and disable name advertising

README.md

@@ -20,6 +20,10 @@ settings:
     "min_sec_level": 0,       // Minimum security level for all attributes of all services.
                               // 0 - no auth required, 1 - encryption reqd, 2 - encryption + MITM reqd
     "require_pairing": false  // Require taht device is paired before accessing services
+  },
+  "gap": {
+    "include_name": true,     // Include dev_name in advertisements
+    "service_uuid": ""        // Advertise this service uuid
   }
 }
 ```

mos.yml

@@ -26,6 +26,9 @@ config_schema:
   - ["bt.gatts", "o", {title: "GATTS settings"}]
   - ["bt.gatts.min_sec_level", "i", 0, {title: "0 - no auth required, 1 - encryption reqd, 2 - encryption + MITM reqd"}]
   - ["bt.gatts.require_pairing", "b", false, {title: "Require device to be paired before accessing services"}]
+  - ["bt.gap", "o", {title: "GAP settings"}]
+  - ["bt.gap.include_name", "b", true, {title: "Include name in advertisements"}]
+  - ["bt.gap.service_uuid", "s", "", {title: "Service UUID to advertise"}]
 
 tags:
   - bt

src/esp32/esp32_bt_gap.c

@@ -43,6 +43,7 @@ static bool s_advertising = false;
 static bool s_pairing_enable = false;
 static bool s_scanning = false;
 static int s_scan_duration_sec = 3;
+static uint8_t s_service_uuid[16] = {0};
 
 static esp_ble_adv_data_t s_adv_data = {
     .set_scan_rsp = false,
@@ -76,6 +77,23 @@ bool esp32_bt_is_scanning(void) {
 static bool start_advertising(void) {
   if (s_advertising) return true;
   if (!s_adv_enable || esp32_bt_is_scanning()) return false;
+
+  s_adv_data.include_name = mgos_sys_config_get_bt_gap_include_name();
+
+  struct mg_str service_uuid_str =
+      mg_mk_str(mgos_sys_config_get_bt_gap_service_uuid());
+  struct mgos_bt_uuid service_uuid;
+  if (service_uuid_str.p &&
+      mgos_bt_uuid_from_str(service_uuid_str, &service_uuid) &&
+      service_uuid.len == sizeof(service_uuid.uuid.uuid128)) {
+    memcpy(s_service_uuid, service_uuid.uuid.uuid128, service_uuid.len);
+    s_adv_data.service_uuid_len = service_uuid.len;
+    s_adv_data.p_service_uuid = s_service_uuid;
+  } else {
+    s_adv_data.service_uuid_len = 0;
+    s_adv_data.p_service_uuid = NULL;
+  }
+
   const char *dev_name = mgos_sys_config_get_bt_dev_name();
   if (dev_name == NULL) dev_name = mgos_sys_config_get_device_id();
   if (dev_name == NULL) {