Search found 205 matches

by axellin
Thu Aug 21, 2025 2:09 am
Forum: ESP-IDF
Topic: How to change MTU ?
Replies: 0
Views: 107

How to change MTU ?

The MTU is 1500, this causes issue with VPN.
Is there any API to change (reduce) MTU (without modifying esp-idf directly).
Also is it possible to change MTU for PPP netif?
by axellin
Thu May 29, 2025 5:44 am
Forum: ESP-IDF
Topic: boot_comm: mismatch chip ID, expected 0, found 10710
Replies: 1
Views: 73

Re: boot_comm: mismatch chip ID, expected 0, found 10710

One of the reset also shows:
Sig block 0 invalid: Image digest does not match
secure boot verification failed

But in the end it also successfully boot.


ets Jul 29 2019 12:21:46

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 153911750, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv ...
by axellin
Thu May 29, 2025 5:36 am
Forum: ESP-IDF
Topic: boot_comm: mismatch chip ID, expected 0, found 10710
Replies: 1
Views: 73

boot_comm: mismatch chip ID, expected 0, found 10710

I'm testing ESP32-WROOM-32E-N8R2 module.
Sometimes the boot log shows mismatch chip ID:

e.g.

ets Jul 29 2019 12:21:46

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 153911750, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:2, clock div ...
by axellin
Tue May 20, 2025 3:02 am
Forum: ESP-IDF
Topic: what mean this error "--- 0x40080400: _invalid_pc_placeholder at "
Replies: 6
Views: 2037

Re: what mean this error "--- 0x40080400: _invalid_pc_placeholder at "

Hi,
Is there any fix available?
I hit the same issue with v5.5 branch:

rst:0x7 (TG0WDT_SYS_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 153911750, 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:0x3fff0030,len:296
load:0x40078000 ...
by axellin
Tue Dec 17, 2024 3:04 am
Forum: ESP-IDF
Topic: Is it ok to call free() for memory allocated by heap_caps_calloc_prefer()?
Replies: 1
Views: 1259

Is it ok to call free() for memory allocated by heap_caps_calloc_prefer()?

If I have called
buf = heap_caps_calloc_prefer(8, 2048, 2, MALLOC_CAP_DEFAULT|MALLOC_CAP_SPIRAM, MALLOC_CAP_DEFAULT|MALLOC_CAP_INTERNAL);
Is it ok to free buf by calling free(buf)?
Or I need to call heap_caps_free() instead?

What's the difference of calling free() v.s. heap_caps_free()?
by axellin
Sat Nov 16, 2024 2:50 pm
Forum: ESP-IDF
Topic: HTTP connection issue during file download
Replies: 1
Views: 1274

Re: HTTP connection issue during file download

I hit the same (or similar) issue.
Just wondering how do you fix this issue?
by axellin
Mon Jun 17, 2024 9:18 am
Forum: ESP-IDF
Topic: Help in Decoding Wifi W (223029) wifi:[ADDBA]rx delba, code:37, delete tid:0
Replies: 3
Views: 6817

Re: Help in Decoding Wifi W (223029) wifi:[ADDBA]rx delba, code:37, delete tid:0

I got the same messages..
My device is running as an AP, but I sometime cannot connect to it.
Even the device shows "esp_netif_lwip: DHCP server assigned IP to a client, IP is: 192.168.10.2", I still cannot reach the device by ping.
Anything wrong in below log?


I (46217) wifi:[ADDBA]RX DELBA ...
by axellin
Tue Jun 11, 2024 5:51 am
Forum: General Discussion
Topic: ESP32-S3 Wi-Fi 2.4GHz receiver test with Wi-Fi tester failed with packet drop issue
Replies: 10
Views: 7273

Re: ESP32-S3 Wi-Fi 2.4GHz receiver test with Wi-Fi tester failed with packet drop issue



The documentation warns about interference of the USB PHY towards the Wifi PHY, causing "performance loss". Can you try this with the USB PHY turned off (see menuconfig option)? Maybe that's the problem. For myself it's not very practical to turn off USB, so I guess I'll have to live with it ...
by axellin
Thu Mar 28, 2024 7:38 am
Forum: ESP-IDF
Topic: wifi:station join and leave continuously while connecting Mobile device
Replies: 10
Views: 26283

Re: wifi:station join and leave continuously while connecting Mobile device

Did you find anything with regards to this problem? I have this behavior as well.
I suggest you create an issue on https://github.com/espressif/esp-idf
with information about the soc/module, idf version and related log.
by axellin
Tue Feb 20, 2024 5:27 am
Forum: ESP-IDF
Topic: Please help: Unexpected reboot only with "PRO CPU has been reset by WDT" warning
Replies: 6
Views: 14463

Re: Please help: Unexpected reboot only with "PRO CPU has been reset by WDT" warning


The issue is that the watchdog is not getting called.
A vTaskDelay( pdMS_TO_TICKS(10) ); needs to be called periodically (with what ever time you want).
If you are doing this in your main loop, it may also be an interrupt that is preventing the main loop from being called (perhaps because the ...

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