ESP32 firmware problems

oz1paj · 2020-10-13T11:45:01.443Z

Hi I have a issue with the ESP32 module for the OpenEVSE system.

Of some reason maybe a interrupted upload of firmware I now have a ESP32 not working.
The board is now rebooting all the time with the following output on the uart:

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

I have tried with diffrent versions with out any luck.

I am using the NodeMCU PyFlasher to flash the prebuild image.

But if I try with Arduino and uploading a fresh compiled test software the ESP32 starts up, without any problems.

What is it that I am doing wrong here, can it be that the downloaded image must be uploaded thug the web interface, is so how can I get back on track again.

Best regards
Peter

borpin · 2020-10-13T13:27:53.988Z

@glyn.hudson is the man to help

oz1paj · 2020-10-16T06:47:34.914Z

Am I really the first one with this problem?

borpin · 2020-10-16T11:27:38.114Z

@glyn.hudson @TrystanLea - sorry they are the only 2 who can help.

glyn.hudson · 2020-10-16T16:28:10.979Z

Hi Peter,

Sorry to hear your having issues with the ESP32 module? Was the ESP32 module your having issues with shipped by OpenEnergyMonitor? I notice you have ordered one but the tracking indicates that is has not yet been delivered.

It sounds like you will need to use esptool to perform a full erase then upload the firmware:

$ esptool.py erase_flash

See instructions to flash firmware: GitHub - OpenEVSE/ESP32_WiFi_V4.x: OpenEVSE V3 WiFi gateway using ESP32

oz1paj · 2020-10-16T18:28:54.000Z

Hi Glyn

The module was purchased from openevse in the US a few weeks ago, the one there is on the way right now is just a backup.

I was working until I tried to update it.

I have tried to erase the flash as you suggested.

>python.exe esptool.py erase_flash

esptool.py v2.8

Found 3 serial ports

Serial port COM7

Connecting........_

Detecting chip type... ESP32

Chip is ESP32D0WDQ6 (revision 1)

Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None

Crystal is 40MHz

MAC: ac:67:b2:0b:28:8c

Uploading stub...

Running stub...

Stub running...

Erasing flash (this may take a while)...

Chip erase completed successfully in 8.2s

Hard resetting via RTS pin...

Programming again with NodeMCU:

image003.jpg705×640 62.1 KB

But still rebooting and dumping the same on the uart

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)

flash read err, 1000

ets_main.c 371

Please advice.

Best regards

Peter

Robert.Wall · 2020-10-16T20:58:06.047Z

@oz1paj
I’ve tried to format your post to make it a bit clearer.

When posting code or output, can you please put 3 ‘backticks’ (normally found at the top left of the keyboard) on a line of their own before the code, and 3 more backticks on a line of their own after the code.

```
code
```

If it is something like php you can add a language identifier that after the first 3 backticks so ```php

oz1paj · 2020-10-17T07:46:08.997Z

@Robert.Wall
Thanks, I did not know that.

Just to try somthing, where can I finde the bootloader.bin and partitions.bin without compiling everything myself ?

Robert.Wall · 2020-10-17T10:33:32.341Z

Sorry, I’m not familiar with the ESP32.

oz1paj · 2020-10-20T06:19:37.909Z

@glyn.hudson
Do you know where I can find the bootloader.bin and partitions.bin files ?

glyn.hudson · 2020-10-20T17:18:05.424Z

Pre-compiled versions of the ESP32 OpenEVSE WiFi V3 firmware can be found on the releases page: Releases · OpenEVSE/ESP32_WiFi_V4.x · GitHub

oz1paj · 2020-10-21T07:01:04.662Z

Hi Glyn
Strange that I did not see the files before.

Now the ESP32 is working again, thanks for support.

Best regards
Peter

JavierSC · 2022-02-18T17:19:01.885Z

@oz1paj I don’t understand. How did you resolve your issue? Why you were searching bootloader.bin and partitions.bin files? After you did find them, how did you use them? Thanks in advance.

JavierSC · 2022-02-18T17:21:19.016Z

Hi, please can you explain me how could you resolve your issue? Thanks in advance.

btol · 2022-04-04T04:26:36.325Z

Is there another solution? I am experiencing the same “flash read err, 1000” error. This all started when I tried to update to 4.1.2 via browser. This firmware updated appeared to work fine, but I could only access the wifi module via AP or standalone modes.

I tried to update firmware via browser, and that failed. I later used a programmer to erase_flash before attempting to burn 4.1.2 or 4.1.1. Output showed success, but wifi module never appears to boot. When I checked serial monitor, the chip continues to post “flash read err, 1000”.