Increase stack size for the BLE task (#1069)

* Add telemetry for BLE stack usage
* Increase stack size for the BLE task

platformio.ini

@@ -32,7 +32,8 @@ build_flags =
   -Wno-stringop-overflow
   -Wformat-truncation
   -D ARDUINOJSON_ENABLE_NAN=0
-  -D CONFIG_BT_NIMBLE_TASK_STACK_SIZE=4096
+  -D CONFIG_BT_NIMBLE_TASK_STACK_SIZE=5632
+  -D CONFIG_BT_NIMBLE_HOST_TASK_STACK_SIZE=5632
   -D SCAN_TASK_STACK_SIZE=2562
   -D ARDUINO_LOOP_STACK_SIZE=6500
   -D MQTT_MIN_FREE_MEMORY=12192

src/main.cpp

@@ -114,6 +114,7 @@ bool sendTelemetry(unsigned int totalSeen, unsigned int totalFpSeen, int unsigne
     doc["maxHeap"] = maxHeap;
     doc["scanStack"] = uxTaskGetStackHighWaterMark(scanTaskHandle);
     doc["loopStack"] = uxTaskGetStackHighWaterMark(nullptr);
+    doc["bleStack"] = bleStack;
 
     String buffer;
     serializeJson(doc, buffer);
@@ -480,6 +481,7 @@ void reportLoop() {
 
 class MyAdvertisedDeviceCallbacks : public BLEAdvertisedDeviceCallbacks {
     void onResult(BLEAdvertisedDevice *advertisedDevice) {
+        bleStack = uxTaskGetStackHighWaterMark(nullptr);
         BleFingerprintCollection::Seen(advertisedDevice);
     }
 };

src/main.h

@@ -56,6 +56,7 @@ int reconnectTries = 0;
 int teleFails = 0;
 bool online = false;         // Have we successfully sent status=online
 bool sentDiscovery = false;  // Have we successfully sent discovery
+UBaseType_t bleStack = 0;
 
 int ethernetType = 0;
 String mqttHost, mqttUser, mqttPass;