familiarization demo code

part 3

Author: fabiankuffer

.vscode/settings.json

@@ -1,5 +1,8 @@
 {
     "idf.adapterTargetName": "esp32",
     "idf.port": "/dev/ttyUSB0",
-    "idf.flashType": "UART"
+    "idf.flashType": "UART",
+    "files.associations": {
+        "regex": "cpp"
+    }
 }

links

@@ -5,3 +5,4 @@ github.com/espressif/esp-idf/blob/master/examples/bluetooth/nimble/bleprph/main/
 mynewt.apache.org/latest/network/ble_hs/ble_att.html
 docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/bluetooth/nimble.index.html
 https://iotespresso.com/esp32-nimble-how-to-send-notifications/
+https://embeddedartistry.com/blog/2017/05/01/mixing-c-and-c-extern-c/

main/gap.cpp

@@ -35,8 +35,9 @@ static void bleprhp_advertise(void){
 
     /*Begin advertising*/
     memset(&adv_params, 0, sizeof(adv_params));
-    //TODO
+    //undirected-connectable
     adv_params.conn_mode = BLE_GAP_CONN_MODE_UND;
+    //general-discoverable
     adv_params.disc_mode = BLE_GAP_DISC_MODE_GEN;
     rc = ble_gap_adv_start(bleprhp_addr_type, NULL, BLE_HS_FOREVER, &adv_params, bleprhp_gap_event, NULL);
     if (rc != 0){
@@ -62,7 +63,7 @@ static int bleprhp_gap_event(struct ble_gap_event *event, void *arg){
             bleprhp_advertise();
             break;
         case BLE_GAP_EVENT_ADV_COMPLETE:
-            //TODO
+            //means advertising has been completed because connection has been established
             ESP_LOGI(tag, "adv complete\n");
             bleprhp_advertise();
             break;

main/gatt.cpp

@@ -7,6 +7,27 @@ int gatt_svr_init(void){
     ble_svc_gatt_init();
 
     //TODO
-    rc = ble_gatts_count_cfg(gatt_svr_srvcs);
+    /*Adjusts a host configuration object's settings to accommodate the specified
+     service definition array.  This function adds the counts to the appropriate
+     fields in the supplied configuration object without clearing them first, so
+     it can be called repeatedly with different inputs to calculate totals.  Be
+     sure to zero the GATT server settings prior to the first call to this
+     function.*/
+    /*rc = ble_gatts_count_cfg(gatt_svr_svcs);
+    if (rc != 0) {
+        return rc;
+    }*/
 
+    /*
+    Queues a set of service definitions for registration.  All services queued
+    in this manner get registered when ble_gatts_start() is called.
+    */
+    /*rc = ble_gatts_add_svcs(gatt_svr_svcs);
+    if (rc != 0) {
+        return rc;
+    }*/
+
+    ble_gatts_start();
+
+    return 0;
 }

main/main.cpp

@@ -37,7 +37,6 @@ extern "C" void app_main(void)
     /*Security Manager Remote Key Distribution Mask*/
     ble_hs_cfg.sm_their_key_dist = 1;
 
-    //TODO
     rc = gatt_svr_init();
     assert(rc == 0);