Error after enabling NimBLE for ESP32 (platformio) #368
Description
Hi there,
I’m currently working on a macro keyboard project using ESP32 and the ESP32 BLE Keyboard library. Everything was going fine until I realized the default BLE stack consumes too much flash and memory — so I decided to switch to NimBLE for its lighter footprint.
However, after enabling #define USE_NIMBLE, the project fails to compile with the following errors:
In file included from src/BLEKeyboardWrapper.h:4,
from src/main.cpp:3:
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:2: warning: "USE_NIMBLE" redefined
#define USE_NIMBLE
: note: this is the location of the previous definition
In file included from src/BLEKeyboardWrapper.h:4,
from src/BLEKeyboardWrapper.cpp:1:
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:131:60: error: expected class-name before ',' token
class BleKeyboard : public Print, public BLEServerCallbacks, public BLECharacteristicCallbacks
^
In file included from src/BLEKeyboardWrapper.h:4,
from src/BLEKeyboardWrapper.cpp:1:
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:19:36: error: 'NimBLEAdvertising' does not name a type; did you mean 'BLEAdvertising'?
#define BLEAdvertising NimBLEAdvertising
^~~~~~~~~~~~~~~~~
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:138:3: note: in expansion of macro 'BLEAdvertising'
BLEAdvertising* advertising;
^~~~~~~~~~~~~~
In file included from src/BLEKeyboardWrapper.h:4,
from src/BLEKeyboardWrapper.cpp:1:
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:176:16: error: 'virtual void BleKeyboard::onConnect(NimBLEServer*)' marked 'override', but does not override
virtual void onConnect(BLEServer* pServer) override;
^~~~~~~~~
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:177:16: error: 'virtual void BleKeyboard::onDisconnect(NimBLEServer*)' marked 'override', but does not override
virtual void onDisconnect(BLEServer* pServer) override;
^~~~~~~~~~~~
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:178:16: error: 'virtual void BleKeyboard::onWrite(NimBLECharacteristic*)' marked 'override', but does not override
virtual void onWrite(BLECharacteristic* me) override;
^~~~~~~
*** [.pio\build\esp32dev\src\BLEKeyboardWrapper.cpp.o] Error 1
In file included from src/BLEKeyboardWrapper.h:4,
from src/main.cpp:3:
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:131:60: error: expected class-name before ',' token
class BleKeyboard : public Print, public BLEServerCallbacks, public BLECharacteristicCallbacks
^
In file included from src/BLEKeyboardWrapper.h:4,
from src/main.cpp:3:
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:19:36: error: 'NimBLEAdvertising' does not name a type; did you mean 'BLEAdvertising'?
#define BLEAdvertising NimBLEAdvertising
^~~~~~~~~~~~~~~~~
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:138:3: note: in expansion of macro 'BLEAdvertising'
BLEAdvertising* advertising;
^~~~~~~~~~~~~~
In file included from src/BLEKeyboardWrapper.h:4,
from src/main.cpp:3:
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:176:16: error: 'virtual void BleKeyboard::onConnect(NimBLEServer*)' marked 'override', but does not override
virtual void onConnect(BLEServer* pServer) override;
^~~~~~~~~
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:177:16: error: 'virtual void BleKeyboard::onDisconnect(NimBLEServer*)' marked 'override', but does not override
virtual void onDisconnect(BLEServer* pServer) override;
^~~~~~~~~~~~
.pio/libdeps/esp32dev/ESP32 BLE Keyboard/BleKeyboard.h:178:16: error: 'virtual void BleKeyboard::onWrite(NimBLECharacteristic*)' marked 'override', but does not override
virtual void onWrite(BLECharacteristic* me) override;
^~~~~~~
*** [.pio\build\esp32dev\src\main.cpp.o] Error 1
What I’ve Tried:
Removed local #define USE_NIMBLE and used only build_flags = -DUSE_NIMBLE
Ensured NimBLEDevice.h is included
Confirmed class aliases (#define BLEServer NimBLEServer, etc.) are being used
Still, the virtual methods using BLEServer* are not overriding properly when NimBLE is enabled.
Thanks in advance!