From f8d38a030644718e019f4ec7a53ab06d2bce5742 Mon Sep 17 00:00:00 2001
From: Gunnar Beutner <gunnar@beutner.de>
Date: Thu, 2 Nov 2023 02:08:46 +0100
Subject: [PATCH] Increase stack size for the BLE task (#1069)

* Add telemetry for BLE stack usage
* Increase stack size for the BLE task
---
 platformio.ini | 3 ++-
 src/main.cpp   | 2 ++
 src/main.h     | 1 +
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/platformio.ini b/platformio.ini
index 7fe9168..4ee4b4a 100644
--- a/platformio.ini
+++ b/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
diff --git a/src/main.cpp b/src/main.cpp
index de2a0b4..5e16239 100644
--- a/src/main.cpp
+++ b/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);
     }
 };
diff --git a/src/main.h b/src/main.h
index 485e99b..f62c068 100644
--- a/src/main.h
+++ b/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;