ESP32-WROOM32: Issue with hardware or software?

[victorsanchis]

Please fill the info fields, it helps to get you faster support ;)

If you have a Guru Meditation Error, please decode it:
https://github.com/me-no-dev/EspExceptionDecoder

----------------------------- Remove above -----------------------------

Hardware:

Board: esp32wroom32 - Arduino ESP32 Dev Module, yes.
Core Installation/update date: latest, fresh install
IDE name: Arduino IDE 1.8.5, fresh install
Flash Frequency: 40Mhz?
Upload Speed: 115200

Description:

I don't know how this happened but I got a problem with 2 esp32 units -one with the below indicated issue, plus, another one I've just tried after having problems with the first ESP32 unit-.
I can compile any example or my own sketches but, once the sketch is loaded, it doesn't work and, through the serial monitor I can only get same message, which makes me think if both units have same problem (same day?) because of soft or hardware reasons (?) as "core 0" is continuously mentioned:

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:1
load:0x3fff0018,len:4
load:0x3fff001c,len:952
load:0x40078000,len:6084
load:0x40080000,len:7936
entry 0x40080310
assertion "index >= 0 && index < Nitems" failed: file "/Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/nvs_flash/src/compressed_enum_table.hpp", line 38, function: Tenum CompressedEnumTable<Tenum, Nbits, Nitems>::get(size_t) const [with Tenum = nvs::Page::EntryState; unsigned int Nbits = 2u; unsigned int Nitems = 126u; size_t = unsigned int]
abort() was called at PC 0x400d33ab on core 0

Backtrace: 0x400883f8:0x3ffc6fd0 0x400885fb:0x3ffc6ff0 0x400d33ab:0x3ffc7010 0x400d6292:0x3ffc7040 0x400d69b1:0x3ffc7090 0x400d6c37:0x3ffc7100 0x400d6ea5:0x3ffc7160 0x400d5bb6:0x3ffc71c0 0x400d5a11:0x3ffc7210 0x400d5acb:0x3ffc7230 0x400d5b16:0x3ffc7250 0x400d0a24:0x3ffc7270 0x400e569f:0x3ffc7290 0x400d430e:0x3ffc72c0
..............................................................................................................................................
Just in case:
I have re-installed Arduino IDE and also charged the last latest ESP32 library version (https://github.com/espressif/arduino-esp32).
I have pushed the "Boot" & "En" buttons for long times... doesn't matter: the sketch is compiled, and uploaded but... the ESP32 shows always same issue/message.
...............................................................................................................................................
I'm totally newbie with Arduino and programming (0 knowledge!) but I have been able to connect some sensors to both ESP32 units and connect them to a couple of IoT platforms and get those sensor values on the account I opened. However, since yesterday both units show same problem.

Sketch:

It doesn´t matter the sketch: the unit simply seems to reboot all time... (!)

Debug Messages:

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:1
load:0x3fff0018,len:4
load:0x3fff001c,len:952
load:0x40078000,len:6084
load:0x40080000,len:7936
entry 0x40080310
assertion "index >= 0 && index < Nitems" failed: file "/Users/ficeto/Desktop/ESP32/ESP32/esp-idf-public/components/nvs_flash/src/compressed_enum_table.hpp", line 38, function: Tenum CompressedEnumTable<Tenum, Nbits, Nitems>::get(size_t) const [with Tenum = nvs::Page::EntryState; unsigned int Nbits = 2u; unsigned int Nitems = 126u; size_t = unsigned int]
abort() was called at PC 0x400d33ab on core 0

Backtrace: 0x400883f8:0x3ffc6fd0 0x400885fb:0x3ffc6ff0 0x400d33ab:0x3ffc7010 0x400d6292:0x3ffc7040 0x400d69b1:0x3ffc7090 0x400d6c37:0x3ffc7100 0x400d6ea5:0x3ffc7160 0x400d5bb6:0x3ffc71c0 0x400d5a11:0x3ffc7210 0x400d5acb:0x3ffc7230 0x400d5b16:0x3ffc7250 0x400d0a24:0x3ffc7270 0x400e569f:0x3ffc7290 0x400d430e:0x3ffc72c0

Rebooting...

Can anyone help me to fix this?
Thank you very much in advance for any help!

Victor
P.s.: remember I am totally newbie on this subjects ('though I always try my best :-) )

[lbernstone]

As mentioned at the very top of the issue report, please run EspExceptionDecoder to determine what is throwing the exception in your code. If an example sketch like WiFiClient throws this same error, then wipe your device by running python esptool.py erase_flash and try again.

[victorsanchis]

Thanks, Ibernstone. I'll try that this evening!

[andiwimmer]

Is this in combination with the DeepSleep-Mode? I had issues with that in combination with the Serial.println function.

[victorsanchis]

Nope, @thetotalwimmer , in my case it was after installing/adding "SmartConfig" a few days ago, 'though I am not saying that there is a "cause-effect" relationship.

[mmashraf]

Hi I buy new ESP32 from Ali express and after first program of blink , it is continuously showing the sw_reset issue on serial port. i also try python esptool.py erase_flash but it does not work and also following error
raceback (most recent call last):
File "esptool.py", line 37, in
import serial
ImportError: No module named serial

rst:0x3 (SW_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:1
load:0x3fff0018,len:4
load:0x3fff001c,len:1100
load:0x40078000,len:9232
load:0x40080400,len:6400
entry 0x400806a8
ets Jun 8 2016 00:22:57

[mmashraf]

these two commands help me for erase flash. -p with COM4 where ESP32 is connected is required from windows device manager view.
pip install pyserial
python esptool.py -p COM4 erase_flash

after erase of flash following is error. Please advise How it can be fixed to use this eSP32 module. below is continuous error and I was not able to fix it.

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
flash read err, 1000
ets_main.c 371

[beegee-tokyo]

First of all, it is not a good practice to high-jack an issue with something unrelated. You should open a new issue if you cannot find an issue that addresses flash read err, 1000

I had the exact same issue today with a cheap Chinese ESP32 Wrover board.

Problem with flash read err, 1000 was related to a power supply issue.

After supplying from a 2.1A USB power supply the error went away and the ESP32 works as expected.
Supplying from USB port of my PC and the error comes back.

Try a big capacitor on GND and +5V pin of the ESP32 modules or look for a powered USB hub that gives enough power on USB.

[mmashraf]

thank for response please suggest capacitor value. Even I connect new power supply with good reading but I have to upload program which is also not happening

[beegee-tokyo]

Try 470uF or larger.

What could help as well is to try a different USB cable.

For me 2 out of 5 USB cable have problems to supply the ESP32 when connected to the PC.

If you are on Windows, check the settings for the USB ports. Mine was set to "Allow to shutdown USB device for power saving". Disabling that helped as well.

[mmashraf]

remarks from are valuable and it looks that it solved the problem.
Sounds like your code upload is failing
See #3036

[stale]

[STALE_SET] This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 14 days if no further activity occurs. Thank you for your contributions.

[stale]

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

[halitekmekcioglu]

Same thing on me! I was programmed ESP32-CAM in my office with my laptop and I left it while it's properly working. After that, I came home and I started to connect it again. Only one thing happened as extraordinary, I've connected directly +5v and board had been warmed a lot, and then I realized it and I plugged it to 3.3V. After that, I started to get this script on the serial port. Did anyone fix it yet?

rst:0x7 (TG0WDT_SYS_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:1
load:0x3fff0018,len:4
load:0xcf3f00c7,len:496
ho 0 tail 12 room 4
load:0x191c5e11,len:1494867736
ets Jun 8 2016 00:22:57