Dasduino ConnectPlus Bluetooth example causes Guru Meditation Error and brownout resets

TECHNICAL SUPPORT NULA Development Boards
1

Customer:

When I load the basic classic Bluetooth example on the Dasduino ConnectPlus, the serial monitor shows repeated crashes:

0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
Brownout detector was triggered

ets Jul 29 2019 12:21:46
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: ,len:10900
load: ,len:6360
entry 0x400806b4
Guru Meditation Error: Core 0 panic'ed (LoadProhibited). Exception was unhandled.
Core 0 register dump:
PC : 0x400def30 PS : A0 : 0x800df5d1 A1 : 0x3ffcffb0
A2 : 0x3ffde93c A3 : 0x3ffd0028 A4 : A5 :
A6 : A7 : A8 : A9 : 0x3ffcffb0
A10 : A11 : A12 : A13 : 0x3ffd0030
A14 : 0x000f1400 A15 : 0x3ffde93c SAR : EXCCAUSE: 0x0000001c
EXCVADDR: 0x0000002c LBEG : 0x4000c2e0 LEND : 0x4000c2f6 LCOUNT : 0xffffffff

ELF file SHA256:

Backtrace: 0x400def30:0x3ffcffb0 0x400df5ce:0x3ffd0000 0x400d5969:0x3ffd0020 0x4008f49e:0x3ffd0050

Rebooting...

The board is only connected via USB to the laptop with no other connections. The sketch being used is:

#include "BluetoothSerial.h"

#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run `make menuconfig` to and enable it
#endif

BluetoothSerial SerialBT;

void setup() {
  Serial.begin(115200);
  SerialBT.begin("ESP32test"); //Bluetooth device name
  Serial.println("The device started, now you can pair it with bluetooth!");
}

void loop() {
  if (Serial.available()) {
    SerialBT.write(Serial.read());
  }
  if (SerialBT.available()) {
    Serial.write(SerialBT.read());
  }
  delay(20);
}

Is there a known issue or do you have a working library and example?

Original message (Croatian)

Pozdrav, imam problem sa navedenom pločom, kod učitavanja osnovnog primjera za klasični bluetooth, u serial monitoru dobivam ovo:
0x1 (POWERON_RESET),boot:0x13 (S
Brownout detector was triggered

ets Jul 29 2019 12:21:46

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: ,len:10900
load: ,len:6360
entry 0x400806b4
Guru Meditation Error: Core 0 panic’ed (LoadProhibited). Exception was unhandled.
Core 0 register dump:
PC : 0x400def30 PS : A0 : 0x800df5d1 A1 : 0x3ffcffb0
A2 : 0x3ffde93c A3 : 0x3ffd0028 A4 : A5 :
A6 : A7 : A8 : A9 : 0x3ffcffb0
A10 : A11 : A12 : A13 : 0x3ffd0030
A14 : 0x000f1400 A15 : 0x3ffde93c SAR : EXCCAUSE: 0x0000001c
EXCVADDR: 0x0000002c LBEG : 0x4000c2e0 LEND : 0x4000c2f6 LCOUNT : 0xffffffff

ELF file SHA256:

Backtrace: 0x400def30:0x3ffcffb0 0x400df5ce:0x3ffd0000 0x400d5969:0x3ffd0020 0x4008f49e:0x3ffd0050

Rebooting…
ets Jul 29 2019 12:21:46

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: ,len:10900
load: ,len:6360
entry 0x400806b4

Brownout detector was triggered

ets Jul 29 2019 12:21:46

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: ,len:10900
load: ,len:6360
entry 0x400806b4
Guru Meditation Error: Core 0 panic’ed (LoadProhibited). Exception was unhandled.
Core 0 register dump:
PC : 0x400def30 PS : A0 : 0x800df5d1 A1 : 0x3ffcffb0
A2 : 0x3ffde93c A3 : 0x3ffd0028 A4 : A5 :
A6 : A7 : A8 : A9 : 0x3ffcffb0
A10 : A11 : A12 : A13 : 0x3ffd0030
A14 : 0x000f1400 A15 : 0x3ffde93c SAR : EXCCAUSE: 0x0000001c
EXCVADDR: 0x0000002c LBEG : 0x4000c2e0 LEND : 0x4000c2f6 LCOUNT : 0xffffffff

ELF file SHA256:

Backtrace: 0x400def30:0x3ffcffb0 0x400df5ce:0x3ffd0000 0x400d5969:0x3ffd0020 0x4008f49e:0x3ffd0050

Rebooting…
ets Jul 29 2019 12:21:46

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: ,len:10900
load: ,len:6360
entry 0x400806b4
Sketch (ništa nije spojeno na ploču, samo usb-om na laptop): //This example code is in the Public Domain (or CC0 licensed, at your option.)
//By Evandro Copercini - 2018
//
//This example creates a bridge between Serial and Classical Bluetooth (SPP)
//and also demonstrate that SerialBT have the same functionalities of a normal Serial

#include “BluetoothSerial.h”

#if !defined(CONFIG_BT_ENABLED) || !defined(CONFIG_BLUEDROID_ENABLED)
#error Bluetooth is not enabled! Please run make menuconfig to and enable it
#endif

BluetoothSerial SerialBT;

void setup() {
Serial.begin(115200);
SerialBT.begin(“ESP32test”); //Bluetooth device name
Serial.println(“The device started, now you can pair it with bluetooth!”);
}

void loop() {
if (Serial.available()) {
SerialBT.write(Serial.read());
}
if (SerialBT.available()) {
Serial.write(SerialBT.read());
}
delay(20);
}
Znate li možda u čemu je tu problem? Ili ako imate neki library i primjer koji radi?

Originally submitted via email support on 7 September 2022. Migrated to the forum for community visibility.

2

Soldered Support:

Install the official ESP32 board definition from Installing - - — Arduino ESP32 latest documentation and then run the same example. We currently have issues with our board definition and will resolve them soon.

Original message (Croatian)

možete li instalirati službeni ESP32 Board definition Installing - - — Arduino ESP32 latest documentation, te zatim pokrenuti isti primjer. Trenutno imamo problema s našim Board definition-om, te ćemo ga uskoro riješiti.
U prilogu Vam šaljem slike postavki i primjera kojega sam testirao da radi.

Attachment omitted in migration: Example.png

Attachment omitted in migration: BoardDefinition.png

3

Customer:

I installed the official board definition but the upload throws an error (see attachment).

Original message (Croatian)

Pozdrav, instalirao sam navedeni board, ali upload baca grešku iz priloga.

Attachment omitted in migration: errorESP32-upload.txt

4

Soldered Support:

Does this error happen every time at the same place? Have you tried running the code multiple times?

Original message (Croatian)

događa li Vam se ta greška uvijek na istom mjestu, jeste li pokušali više puta pokrenuti kod?

5

Customer:

Yes, multiple times, always the same error at the same place, on Linux. Actually, it works for me on Windows 10, so that’s OK. Will easyC work with the esp32-wrover module? Are there any differences or limitations compared to your board definition?

Original message (Croatian)

Da, više puta, ali uvijek ista greška na istom mjestu, na linux.
Evo, ipak mi radi na win10, ok. Hoće li mi easyC raditi sa tim esp32-wrover modulom, ima li nekih razlika/ograničenja u odnosu na vaš board definition?

6

Soldered Support:

Yes, easyC will work normally without any limitations. We use it for I2C communication so you don’t need to connect 4 wires individually but can use a single easyC connector instead. You can read more about easyC at Soldered: Open-Source Electronics, Boards, Sensors & Modules – Soldered Electronics.

Original message (Croatian)

da, easyC će normalno raditi bez ikakvih ograničenja. Mi ga koristimo za I2C komunikaciju zato što se onda ne moraju spajati 4 žice nego se koristi jedan easyC konektor. Možete si više pročitati o easyC na Soldered: Open-Source Electronics, Boards, Sensors & Modules – Soldered Electronics.

7

Customer:

OK, great, so I can work with the official board definition. But I’m curious what the difference is compared to your board definition? And when can this be expected to be fixed?

Original message (Croatian)

Ok, super, onda mogu raditi sa tim board definitionom. ali zanima me onda u čemu je razlika u odnosu na vaš board definition? I kad se može očekivati da će to biti popravljeno?

8

Soldered Support:

The difference is in different examples, and we maintain and fix our board definition regularly, as you’ve now experienced with the Bluetooth issue. Our goal is to fix this in the coming months.

Original message (Croatian)

razlika je u drugačijim primjerima, te mi naš board definition redovno održavamo i popravljamo kao što ste Vi sad naišli na problem s Bluetooth-om.
Cilj nam je to popraviti u narednim mjesecima