Device is now selected based on its name.

Static MAC address no longer required. Devices started with "BB-" are
now selected.

The option to use a fixed address is still available through make
menuconfig.

README.md

@@ -15,9 +15,8 @@ You should have updated your `PATH` environment variable to add the toolchain
 programs. 
 4. Clone this repository and enter the created directory.
 5. Pull the submodules: `git submodule init && git submodule update`
-6. Run `make menuconfig` to change your BB-8 bluetooth MAC address
-7. Compile: `make`
-8. Flash your odroid-go: `make flash`
+6. Compile: `make`
+7. Flash your odroid-go: `make flash`
 
 ## Licence
 

main/Kconfig.projbuild

@@ -1,8 +1,18 @@
 menu "BB-8 remote control"
 
+config STATIC_MAC
+ bool "Set a static MAC address"
+ default n
+ help
+ Connect based on a given MAC address to the Sphero BB-8 toy.
+
+ Otherwise, it will try to connect to any BLE device with a name
+ starting with "BB-"
+
 config BB8_MAC
  string "BB-8 Bluetooth MAC address"
  default "e5:12:88:32:81:75"
+ depends on STATIC_MAC
  help
  Bluetooth MAC address of the Spero BB-8 toy to be controlled.
 

main/bb8.c

@@ -35,8 +35,6 @@ static void esp_gattc_cb(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if, esp
 static void gattc_profile_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
  esp_ble_gattc_cb_param_t * param);
 
-static esp_bd_addr_t bb8_mac;
-
 static bool Isconnecting = false;
 
 static esp_ble_scan_params_t ble_scan_params = {
@@ -162,6 +160,9 @@ static void DisplaySpeed()
 
 #endif
 
+#if CONFIG_STATIC_MAC
+static esp_bd_addr_t bb8_mac;
+
 static void init_mac()
 {
  int values[6];
@@ -180,6 +181,34 @@ static void init_mac()
  ESP_LOGE(GATTC_TAG, "Invalid MAC Address!");
  }
 }
+#endif
+
+uint8_t check_if_bb8(struct ble_scan_result_evt_param scan_rst)
+{
+
+#if CONFIG_STATIC_MAC
+ if (memcmp(scan_rst.bda, bb8_mac, ESP_BD_ADDR_LEN) == 0)
+ return 1;
+ else
+ return 0;
+
+#else
+
+ uint8_t adv_name_len = 0;
+ uint8_t *adv_name;
+
+ adv_name = esp_ble_resolve_adv_data(scan_rst.ble_adv, ESP_BLE_AD_TYPE_NAME_CMPL, &adv_name_len);
+ ESP_LOGI(GATTC_TAG, "adv_name_len: %d", adv_name_len);
+ esp_log_buffer_char(GATTC_TAG, adv_name, adv_name_len);
+ if (adv_name_len > 3)
+ if ((adv_name[0] == 'B') && (adv_name[1] == 'B') && (adv_name[2] == '-'))
+ return 1;
+
+ return 0;
+
+#endif
+
+}
 
 
 static void gattc_profile_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_if,
@@ -314,18 +343,22 @@ static void esp_gap_cb(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t * pa
  case ESP_GAP_BLE_SCAN_RESULT_EVT:
  ESP_LOGI(GATTC_TAG, "SCAN_RESULTE_EVT");
  esp_ble_gap_cb_param_t *scan_result = (esp_ble_gap_cb_param_t *) param;
- esp_log_buffer_hex(GATTC_TAG, scan_result->scan_rst.bda, ESP_BD_ADDR_LEN);
- if (memcmp(scan_result->scan_rst.bda, bb8_mac, ESP_BD_ADDR_LEN) == 0) {
- ESP_LOGI(GATTC_TAG, "BB8 !!!");
- if (Isconnecting) {
- break;
- }
- Isconnecting = true;
- esp_ble_gap_stop_scanning();
- esp_ble_gattc_open(gl_profile_tab[PROFILE_A_APP_ID].gattc_if, scan_result->scan_rst.bda,
- scan_result->scan_rst.ble_addr_type, true);
 
+ if (scan_result->scan_rst.search_evt == ESP_GAP_SEARCH_INQ_RES_EVT) {
+ esp_log_buffer_hex(GATTC_TAG, scan_result->scan_rst.bda, ESP_BD_ADDR_LEN);
+
+ if (check_if_bb8(scan_result->scan_rst)) {
+ ESP_LOGI(GATTC_TAG, "BB8 !!!");
+ if (Isconnecting) {
+ break;
+ }
+ Isconnecting = true;
+ esp_ble_gap_stop_scanning();
+ esp_ble_gattc_open(gl_profile_tab[PROFILE_A_APP_ID].gattc_if, scan_result->scan_rst.bda,
+ scan_result->scan_rst.ble_addr_type, true);
+ }
  }
+
  break;
 
  case ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT:
@@ -403,7 +436,7 @@ void send_command(uint8_t did, uint8_t cid, uint8_t data_length, uint8_t * data)
  ESP_GATT_WRITE_TYPE_RSP,
  ESP_GATT_AUTH_REQ_NONE);
  if (write != ESP_GATT_OK)
- ESP_LOGE(GATTC_TAG, "Error writing antidos");
+ ESP_LOGE(GATTC_TAG, "Error writing command");
  free(packet);
  seq++;
 }
@@ -564,8 +597,9 @@ void test_input()
 
 void app_main()
 {
-
+#if CONFIG_STATIC_MAC
  init_mac();
+#endif
 
  input_init();
 

sdkconfig

@@ -79,7 +79,7 @@ CONFIG_MONITOR_BAUD=115200
 #
 # BB-8 remote control
 #
-CONFIG_BB8_MAC="e5:12:88:32:81:75"
+CONFIG_STATIC_MAC=
 CONFIG_BB8_GUI=y
 
 #