Arduino-esp32: BluetoothSerial Restart crash

[dobraMorda]

Hardware:

Board: ESP32 Dev Module
Core Installation version: 1.0.1
IDE name: Platform.io
Flash Frequency: 240Mhz
Upload Speed: 921600
Computer OS: Windows 10

Description:

ESP32 crash after restart BT. When main loop run first time it's ok, but when loop starts again after BT.end() then system crash.

Sketch:

#include <Arduino.h>
#include "BluetoothSerial.h"

BluetoothSerial BT;

void setup() {
}

void loop() {
    BT.begin("BT test");
    delay(1000);
    BT.end();
    delay(1000);
}

Debug Messages:

ASSERT_PARAM(2048 0), in rwbt.c at line 311
Guru Meditation Error: Core  0 panic'ed (Interrupt wdt timeout on CPU0)
Core 0 register dump:
PC      : 0x40084f21  PS      : 0x00060034  A0      : 0x80089294  A1      : 0x3ffbe310  
A2      : 0x00000001  A3      : 0x00000000  A4      : 0x00000800  A5      : 0x60008054  
A6      : 0x3ffbdd48  A7      : 0x60008050  A8      : 0x80084f21  A9      : 0x3ffbe2f0  
A10     : 0x00000004  A11     : 0x00000000  A12     : 0x6000804c  A13     : 0xffffffff  
A14     : 0x00000000  A15     : 0xfffffffc  SAR     : 0x00000004  EXCCAUSE: 0x00000005  
EXCVADDR: 0x00000000  LBEG    : 0x40084e59  LEND    : 0x40084e60  LCOUNT  : 0x00000000  
Core 0 was running in ISR context:
EPC1    : 0x4000bff0  EPC2    : 0x00000000  EPC3    : 0x00000000  EPC4    : 0x40084f21

Backtrace: 0x40084f21:0x3ffbe310 0x40089291:0x3ffbe330 0x400896a3:0x3ffbe350 0x400813a5:0x3ffbe370 0x4000bfed:0x3ffdf770 0x4008efd5:0x3ffdf780 0x40090d6f:0x3ffdf7a0 0x400913f4:0x3ffdf7c0 0x40084818:0x3ffdf7e0 0x40084abb:0x3ffdf800 0x40084b27:0x3ffdf820 0x400ef971:0x3ffdf870 0x400d59f9:0x3ffdf890 0x400d5acd:0x3ffdf8b0 0x401173fd:0x3ffdf8d0 0x40117410:0x3ffdf8f0 0x400d6ecb:0x3ffdf910 0x40117119:0x3ffdf930 0x4008d735:0x3ffdf960

Core 1 register dump:
PC      : 0x40184f56  PS      : 0x00060f34  A0      : 0x8014519a  A1      : 0x3ffbc590  
A2      : 0x00000000  A3      : 0x80000001  A4      : 0x00000000  A5      : 0x00000001  
A6      : 0x00060a20  A7      : 0x00000000  A8      : 0x00060023  A9      : 0x3ffbc104  
A10     : 0x00000000  A11     : 0x00000001  A12     : 0x8008d948  A13     : 0x3ffc8e40  
A14     : 0x00000000  A15     : 0x3ffbc280  SAR     : 0x00000000  EXCCAUSE: 0x00000005  
EXCVADDR: 0x00000000  LBEG    : 0x00000000  LEND    : 0x00000000  LCOUNT  : 0x00000000  

Backtrace: 0x40184f56:0x3ffbc590 0x40145197:0x3ffbc5b0 0x4008f64d:0x3ffbc5d0 0x4008d735:0x3ffbc5f0

Rebooting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0018,len:4
load:0x3fff001c,len:1100
load:0x40078000,len:9232
load:0x40080400,len:6412
entry 0x400806a8

[dobraMorda]

Anybody can help me?

[DQOmni]

Reported that two months ago (#2601), also got no useful reply. My solution was to call 'begin' only once and only call 'end' before reseting. To force a disconnect, use 'esp_spp_disconnect'. If you want to change the device name, easiest way is to reset the ESP32.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale[bot]]

This stale issue has been automatically closed. Thank you for your contributions.

[tito]

Could you reopen? This is still here and we hit the issue as well easily.

[rgot-org]

I had the same issue. this is because the BT controller remains in state ESP_BT_CONTROLLER_STATUS_INITED instead of state ESP_BT_CONTROLLER_STATUS_IDLE after the end() method.
in file esp_bt.h it is specified

@brief Enable BT controller.
Due to a known issue, you cannot call esp_bt_controller_enable() a second time
to change the controller mode dynamically. To change controller mode, call
esp_bt_controller_disable() and then call esp_bt_controller_enable() with the new mode.

after esp_bt_controller_disable() the controller remains in state INITED so we do call the esp_bt_controller_deinit() function to put the controller into state IDLE.

i have modified the esp32-hal-bt.c file
line 57 and next
(i have insert the esp_bt_controller_deinit() function so the controller go into Idle state)

bool btStop(){
    if(esp_bt_controller_get_status() == ESP_BT_CONTROLLER_STATUS_IDLE){
        log_i("bt stopped");
        return true;
    }
    if(esp_bt_controller_get_status() == ESP_BT_CONTROLLER_STATUS_ENABLED){
        log_i("bt enabled");
        if (esp_bt_controller_disable()) {
            log_e("BT Disable failed");
            return false;
        }
        while(esp_bt_controller_get_status() == ESP_BT_CONTROLLER_STATUS_ENABLED);
    }
    if(esp_bt_controller_get_status() == ESP_BT_CONTROLLER_STATUS_INITED){
        log_i("inited");
        if (esp_bt_controller_deinit()) {
            log_e("BT deint failed");
            return false;
        }
        while (esp_bt_controller_get_status() == ESP_BT_CONTROLLER_STATUS_INITED);
        return true;
    }
    log_e("BT Stop failed");
    return false;
}

[Saph123]

I had the same issue. this is because the BT controller remains in state ESP_BT_CONTROLLER_STATUS_INITED instead of state ESP_BT_CONTROLLER_STATUS_IDLE after the end() method.
in file esp_bt.h it is specified

@brief Enable BT controller.
Due to a known issue, you cannot call esp_bt_controller_enable() a second time
to change the controller mode dynamically. To change controller mode, call
esp_bt_controller_disable() and then call esp_bt_controller_enable() with the new mode.

after esp_bt_controller_disable() the controller remains in state INITED so we do call the esp_bt_controller_deinit() function to put the controller into state IDLE.

i have modified the esp32-hal-bt.c file
line 57 and next
(i have insert the esp_bt_controller_deinit() function so the controller go into Idle state)

bool btStop(){
    if(esp_bt_controller_get_status() == ESP_BT_CONTROLLER_STATUS_IDLE){
      log_i("bt stopped");
        return true;
    }
    if(esp_bt_controller_get_status() == ESP_BT_CONTROLLER_STATUS_ENABLED){
      log_i("bt enabled");
        if (esp_bt_controller_disable()) {
            log_e("BT Disable failed");
            return false;
        }
        while(esp_bt_controller_get_status() == ESP_BT_CONTROLLER_STATUS_ENABLED);
    }
    if(esp_bt_controller_get_status() == ESP_BT_CONTROLLER_STATUS_INITED){
      log_i("inited");
      if (esp_bt_controller_deinit()) {
          log_e("BT deint failed");
          return false;
      }
      while (esp_bt_controller_get_status() == ESP_BT_CONTROLLER_STATUS_INITED);
        return true;
    }
    log_e("BT Stop failed");
    return false;
}

Wow thanks a lot! That worked for me!

[zimiao815]

@Saph123
I also modified the corresponding code. I found that no code didn't work. What should I do？

[zimiao815]

@Saph123 I got it
This code is great Thank you
but feed watchdog is 5 second。