Incompatibility with BluetoothSerial library on LilyGo T-Display-S3
-
i am working on similar project and when i attempting to use the BluetoothSerial library with the LilyGo T-Display-S3 board results in compilation errors. The same code compiles and runs as expected on a standard ESP32 board, indicating the issue is specific to the LilyGo T-Display-S3 board.
Here is the code:
#include "BluetoothSerial.h"
BluetoothSerial SerialBT; // Object for Bluetooth
void setup() {
Serial.begin(115200); // Start the built-in serial port, possibly to communicate with the host computer
//SerialBT.begin("ESP32test"); // Start BluetoothSerial with the name "ESP32test"Serial.println("Bluetooth device is ready to pair");
}void loop() {
if (SerialBT.available()) { // Check if we receive anything from Bluetooth
Serial.write(SerialBT.read()); // Send what we receive to the built-in serial port
}if (Serial.available()) { // Check if anything is coming from the built-in serial port
SerialBT.write(Serial.read()); // Send what we receive to Bluetooth
}
}Here is the error:
c:/users/talha/appdata/local/arduino15/packages/esp32/tools/xtensa-esp32s3-elf-gcc/esp-2021r2-patch5-8.4.0/bin/../lib/gcc/xtensa-esp32s3-elf/8.4.0/../../../../xtensa-esp32s3-elf/bin/ld.exe: libraries\BluetoothSerial\BluetoothSerial.cpp.o:(.literal._ZL8_stop_btv+0x18): undefined reference to esp_spp_disconnect' c:/users/talha/appdata/local/arduino15/packages/esp32/tools/xtensa-esp32s3-elf-gcc/esp-2021r2-patch5-8.4.0/bin/../lib/gcc/xtensa-esp32s3-elf/8.4.0/../../../../xtensa-esp32s3-elf/bin/ld.exe: libraries\BluetoothSerial\BluetoothSerial.cpp.o:(.literal._ZL8_stop_btv+0x1c): undefined reference to esp_spp_deinit'
c:/users/talha/appdata/local/arduino15/packages/esp32/tools/xtensa-esp32s3-elf-gcc/esp-2021r2-patch5-8.4.0/bin/../lib/gcc/xtensa-esp32s3-elf/8.4.0/../../../../xtensa-esp32s3-elf/bin/ld.exe: libraries\BluetoothSerial\BluetoothSerial.cpp.o: in function _stop_bt()': C:\Users\Talha\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.14\libraries\BluetoothSerial\src/BluetoothSerial.cpp:714: undefined reference to esp_spp_disconnect'
c:/users/talha/appdata/local/arduino15/packages/esp32/tools/xtensa-esp32s3-elf-gcc/esp-2021r2-patch5-8.4.0/bin/../lib/gcc/xtensa-esp32s3-elf/8.4.0/../../../../xtensa-esp32s3-elf/bin/ld.exe: C:\Users\Talha\AppData\Local\Arduino15\packages\esp32\hardware\esp32\2.0.14\libraries\BluetoothSerial\src/BluetoothSerial.cpp:715: undefined reference to `esp_spp_deinit'
collect2.exe: error: ld returned 1 exit status
exit status 1
Error compiling for board LilyGo T-Display-S3. -
Well I get the same results on my setup!
So i'm sorry but use this as you may!BTW Did you know that you can use three "`" single back quotes at the start of your code-paste to create this cool effect of your code?
Also put three of them at the end.#include "BluetoothSerial.h" BluetoothSerial SerialBT; // Object for Bluetooth void setup() { Serial.begin(115200); // Start the built-in serial port, possibly to communicate with the host computer //SerialBT.begin("ESP32test"); // Start BluetoothSerial with the name "ESP32test" Serial.println("Bluetooth device is ready to pair"); } void loop() { if (SerialBT.available()) { // Check if we receive anything from Bluetooth Serial.write(SerialBT.read()); // Send what we receive to the built-in serial port } if (Serial.available()) { // Check if anything is coming from the built-in serial port SerialBT.write(Serial.read()); // Send what we receive to Bluetooth } }-Terry
-
This post is deleted! -
@teastain2
Thanks Terry, what im finding is esp32-s3 doesnt support classic bluetooth like bluetoothserial. Looks like you have to use BLE on the S3 -
@thebeardedgarage Good to know!
Thanks -Terry
