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Arduino core for the ESP32
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Bluetoothserial with Password pairing only works on ESP32 v1.0.1 #6061

Closed Manasmw01 closed 1 year ago

Manasmw01 commented 2 years ago

Board

ESP32

Device Description

So, there's this Code which I am using for getting data using UART and sending that data to the Bluetooth terminal for further processing. The only thing I want to add here is password pairing for Bluetooth. I tried the ESP-IDF example named gatt_security_server and it works well. But I faced issues in incorporating Bluetooth Serial in it. I also searched a lot in this, but all I can see is open issues with no solutions. PS: The code is working fine if I downgrade the ESP32 version to 1.0.1 in Arduino IDE. I found this method in one of the comments: LINK I was wondering if you guys could help me out so that this code works with the latest ESP32 version.

Hardware Configuration

Only serial.

Version

v1.0.6

IDE Name

Arduino IDE

Operating System

Windows 10

Flash frequency

40MHz

PSRAM enabled

no

Upload speed

115200

Description

Works with v1.0.1 but not with the latest board version

Sketch

https://github.com/espressif/arduino-esp32/blob/master/libraries/BluetoothSerial/examples/SerialToSerialBTM/SerialToSerialBTM.ino

Debug Message

No

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

euphi commented 2 years ago

Example code that works fine with v1.0.1 and can't connect with v2 (v2.0.2 and latest):

#include "BluetoothSerial.h"
BluetoothSerial SerialBT;

uint8_t address[6] = { 0x20, 0x13, 0x01, 0x18, 0x02, 0x26 };
const char *pin = "1234";
bool connected;

void setup() {
  Serial.begin(115200);
  SerialBT.begin("ESPBT", true); 
  SerialBT.setPin(pin);
  Serial.println("The device started in master mode, make sure remote BT device is on!");

  connected = SerialBT.connect(address);

  if(connected) {
    Serial.println("Connected Succesfully!");
  } else {
    while(!SerialBT.connected(10000)) {
      Serial.println("Failed to connect. Make sure remote device is available and in range, then restart app."); 
    }
  }
}

void loop() {

  if (SerialBT.available()) {
    Serial.write(SerialBT.read());
  }
  delay(5);
}

Tested with platformio:

[env:esp32-v1]
platform=espressif32
board = esp32doit-devkit-v1
framework = arduino
build_flags = -DCORE_DEBUG_LEVEL=6

[env:esp32-v2.0.2]
platform = https://github.com/tasmota/platform-espressif32/releases/download/v2.0.2idf/platform-espressif32-2.0.2.zip
board = esp32doit-devkit-v1
framework = arduino
platform_packages = framework-arduinoespressif32@https://github.com/espressif/arduino-esp32.git
build_flags = -DCORE_DEBUG_LEVEL=6

[env:esp32-v2-upstream]
platform = https://github.com/platformio/platform-espressif32.git#feature/arduino-upstream
board = esp32doit-devkit-v1
framework = arduino
platform_packages = framework-arduinoespressif32@https://github.com/espressif/arduino-esp32.git
build_flags = -DCORE_DEBUG_LEVEL=6

Debug output is not helpful:

V1 (OK):


entry 0x400806a8
[I][BluetoothSerial.cpp:571] _init_bt(): device name set
[I][BluetoothSerial.cpp:243] esp_spp_cb(): ESP_SPP_INIT_EVT
[I][BluetoothSerial.cpp:126] btSetPin(): pin set
The device started in master mode, make sure remote BT device is on!
[I][BluetoothSerial.cpp:803] connect(): master : remoteAddress
[I][BluetoothSerial.cpp:324] esp_spp_cb(): ESP_SPP_DISCOVERY_COMP_EVT
[I][BluetoothSerial.cpp:326] esp_spp_cb(): ESP_SPP_DISCOVERY_COMP_EVT: spp connect to remote
[I][BluetoothSerial.cpp:351] esp_spp_cb(): ESP_SPP_CL_INIT_EVT
[I][BluetoothSerial.cpp:334] esp_spp_cb(): ESP_SPP_OPEN_EVT
Connected Succesfully!
[V][BluetoothSerial.cpp:307] esp_spp_cb(): ESP_SPP_DATA_IND_EVT len=90 handle=129
[V][BluetoothSerial.cpp:307] esp_spp_cb(): ESP_SPP_DATA_IND_EVT len=1 handle=129
[V][BluetoothSerial.cpp:307] esp_spp_cb(): ESP_SPP_DATA_IND_EVT len=64 handle=129
[V][BluetoothSerial.cpp:307] esp_spp_cb(): ESP_SPP_DATA_IND_EVT len=26 handle=129
L5,004000,0,0,4150,4151,4152,287,0,298,1,240,1699,13250,25930;
$FLB,850,99319,2113,0;
[...]

V2 Upstream (not OK):

entry 0x400805e4
[␀␘␂␂␂��m␑um����2-hal-cpu.c:211] setCpuFrequencyMhz(): PLL: 480 / 2 = 240 Mhz, APB: 80000000 Hz
[   562][I][BluetoothSerial.cpp:622] _init_bt(): device name set
[   567][I][BluetoothSerial.cpp:251] esp_spp_cb(): ESP_SPP_INIT_EVT
[   570][I][BluetoothSerial.cpp:134] btSetPin(): pin set
The device started in master mode, make sure remote BT device is on!
[   581][I][BluetoothSerial.cpp:867] connect(): master : remoteAddress
[  1683][I][BluetoothSerial.cpp:336] esp_spp_cb(): ESP_SPP_DISCOVERY_COMP_EVT
[  1684][I][BluetoothSerial.cpp:338] esp_spp_cb(): ESP_SPP_DISCOVERY_COMP_EVT: spp connect to remote
[  1690][I][BluetoothSerial.cpp:363] esp_spp_cb(): ESP_SPP_CL_INIT_EVT
Failed to connect. Make sure remote device is available and in range, then restart app.
Failed to connect. Make sure remote device is available and in range, then restart app.
[ 31849][I][BluetoothSerial.cpp:283] esp_spp_cb(): ESP_SPP_CLOSE_EVT: 0

platformio-project:

esp32-issue6061.zip

BLE works fine with 2.0.2.

euphi commented 2 years ago

Is it easily possible to increase debug-level of the IDF/BlueDroid? (using platformio).

I tried the IDF SPP_INITIATOR_DEMO and this also can't connect. When connecting by directly using the adress, the connection is initiated (ESP_SPP_CL_INIT_EVT) but then fails with mW (36287) BT_RFCOMM: port_rfc_closed RFCOMM connection in state 1 closed: Peer connection failed (res: 16)

SuGlider commented 2 years ago

Try calling setPin() before begin().

void setup() {
  Serial.begin(115200);
  SerialBT.setPin(pin);    // setPin() shall come before begin()
  SerialBT.begin("ESPBT", true); 
  Serial.println("The device started in master mode, make sure remote BT device is on!");

  connected = SerialBT.connect(address);

  if(connected) {
    Serial.println("Connected Succesfully!");
  } else {
    while(!SerialBT.connected(10000)) {
      Serial.println("Failed to connect. Make sure remote device is available and in range, then restart app."); 
    }
  }
}
euphi commented 2 years ago

@SuGlider thanks for the hint, but it does not solve the issue. I suspect that cause is lying "deeper", so I opened an issue at espressif/esp-idf.

euphi commented 2 years ago

Workaround:

I was able to connect with Arduino-ESP32 2.0.2, by using an own SDK configuration that disables SSP.

See https://community.platformio.org/t/using-latest-esp32-arduino-but-with-own-idf-configuration/26000/2 :

platformio.ini:

[env:esp32-v2-upstream]
platform = https://github.com/Jason2866/platform-espressif32/releases/download/v2.0.2/platform-espressif32-2.0.2.zip
board = esp32doit-devkit-v1
framework = arduino, espidf
platform_packages = framework-arduinoespressif32@https://github.com/espressif/arduino-esp32.git

SDK-Config: https://github.com/euphi/ESP32_BTTacho/blob/main/sdkconfig.esp32-v2-upstream

Patch for BluetoothSerial.cpp (commenting out symbols that need SSP enabled): https://github.com/euphi/ESP32_BTTacho/blob/main/framework-arduino-esp32-BTSerial.patch

cattledogGH commented 2 years ago

In my testing with trying to connect an ESP32 using the Arduino core as Bluetooth Serial Master to an HC05 in slave mode, failure to connect begins with any version after 1.0.6.

I think that the issue is with the change from ESP-IDF v3.3.5 to ESP-IDF 4.4. used by the Arduino core. I'm not clear if there were any versions of the ESP-IDF used in the core between these two versions, so the observation is that the problem is associated with ESP-IDF 4.3.2 may be correct.

VojtechBartoska commented 2 years ago

Hello, can you please retest this on v2.0.3-rc1?

cattledogGH commented 2 years ago

@VojtechBartoska v2.0.3-rc1 exhibits the failure of BT master to connect with an HC05.

euphi commented 2 years ago

As already mentioned the problem lays "deeper": The problem can be reproduced without using Arduino framework, but IDF only. So root cause is in the IDF: https://github.com/espressif/esp-idf/issues/8394 .

VojtechBartoska commented 2 years ago

@euphi Thanks for linking IDF ticket, we will investigate this further with ESP-IDF team. Adding this to the Roadmap.

StockBrick commented 2 years ago

Is mine the same issue?

https://github.com/espressif/arduino-esp32/discussions/6785

cattledogGH commented 2 years ago

Ian-- Previously you mentioned a work around with the SDK configuration and SSP settings. I tired to do what you suggested in the Arduino environment, but was not succesfull.

Can you provide me with any more information on what to settings to change?

Regards Richard Marantz

From: Ian Hubbertz @.> Sent: Monday, April 11, 2022 12:36 PM To: espressif/arduino-esp32 @.> Cc: Richard Marantz @.>; Comment @.> Subject: Re: [espressif/arduino-esp32] Bluetoothserial with Password pairing only works on ESP32 v1.0.1 (Issue #6061)

As already mentioned the problem lays "deeper": The problem can be reproduced without using Arduino framework, but IDF only. So root cause is in the IDF: espressif/esp-idf#8394https://github.com/espressif/esp-idf/issues/8394 .

— Reply to this email directly, view it on GitHubhttps://github.com/espressif/arduino-esp32/issues/6061#issuecomment-1095482439, or unsubscribehttps://github.com/notifications/unsubscribe-auth/AHVADAN3TPOW7PRHXQKGQ7LVER5NXANCNFSM5KX34ZLQ. You are receiving this because you commented.Message ID: @.***>

Alssales commented 1 year ago

Has anyone gotten anywhere with this issue? "Bluetoothserial with Password pairing only works on ESP32 v1.0.1 #6061" Really needing a fix for this issue. My program is on hold tell then.........Help

VojtechBartoska commented 1 year ago

@PilnyTomas Can you please revisit this? Test it if it's still valid as a first step, thank you.

PilnyTomas commented 1 year ago

I have a question - why are you trying to connect 2 masters together?

cattledogGH commented 1 year ago

I have a question - why are you trying to connect 2 masters together?

@PilnyTomas Who is this question directed at?

AFAIK, This issue has always been about the ESP32 as master connecting with a slave (like the HC05 or HC06) which requires a password.

PilnyTomas commented 1 year ago

I'm sorry, I'm confused with the other related issues. All I can say is that having two ESP32s - one with SerialToSerialBT with one line added and one changed:

  SerialBT.begin("OBDII"); //Bluetooth device name
  SerialBT.setPin("1234");

is working with the default SerialToSerialBTM BTW using the current master. And if this helps anyone - don't try to connect ESP32 initialized in master mode with the phone, computer, or similar device which is also master - BT standard allows only one master in the pico-network. https://github.com/espressif/arduino-esp32/blob/23d715af1b185fac21558c907af4ff5b86526aa4/libraries/BluetoothSerial/src/BluetoothSerial.h#L42

cattledogGH commented 1 year ago

I can confirm that with Arduino-ESP32 2.0.6. , BluetoothSerial 2.0.0 I can connect to an HC05 in slave mode with password "1234".

The issue appears to have been fixed by this commit and the Arduino core using idf 4.4.1.

EDIT: Fix link

https://github.com/espressif/esp-idf/commit/70d892fbb81e351b38a11c95964e6df4e4edbce

https://github.com/espressif/esp-idf/issues/8394

PilnyTomas commented 1 year ago

@cattledogGH I'm glad to hear that. BTW the link might be broken - I cannot access it.