Search found 102 matches

by dmitrij999
Fri Jun 19, 2026 1:56 pm
Forum: Hardware
Topic: Trying to get documentation for JC-ESP32P4-M3
Replies: 2
Views: 78

Re: Trying to get documentation for JC-ESP32P4-M3

https://github.com/guitionofficial/P4-s ... SP32P4.png - that's what I need, thanks;)

As for ESPHome docs - initially, I've been finding the SDIO pins between ESP32P4 and ESP32C6, and I found this before I got the answer
by dmitrij999
Fri Jun 19, 2026 12:23 pm
Forum: Hardware
Topic: Trying to get documentation for JC-ESP32P4-M3
Replies: 2
Views: 78

Trying to get documentation for JC-ESP32P4-M3

Hello everyone!

I'm trying to get the documentation for JC-ESP32P4-M3, but all I can download is the documentation to modules that uses JC-ESP32P4-M3, but not for JC-ESP32P4-M3 itself.

The link I found is https://pan.jczn1688.com/directlink/1/HMI%20display/JC-ESP32P4-M3-C6.zip?lang=zh
But if I'm ...
by dmitrij999
Fri Jan 23, 2026 12:25 pm
Forum: ESP-IDF
Topic: WiFi SoftAP clients lose connection when ESP32S3 scans WiFi
Replies: 1
Views: 709

Re: WiFi SoftAP clients lose connection when ESP32S3 scans WiFi

I found out that ESP32S3 has WiFi hardware problem with WiFi STA&SoftAP coexistence that causes disconnections clients from SoftAP.
For now, I used these scan parameters (ESP-IDF v5.5.1):

wifi_scan_cfg.show_hidden = true;
wifi_scan_cfg.scan_type = WIFI_SCAN_TYPE_ACTIVE;
wifi_scan_cfg.scan_time ...
by dmitrij999
Sun Jan 18, 2026 7:04 am
Forum: ESP-IDF
Topic: esp-idf flash layout - space before bootloader
Replies: 3
Views: 639

Re: esp-idf flash layout - space before bootloader

As I remember, every ESP32x MCU actually starts execution from 0x1000, because every executive binary (application or bootloader) must have metadata (such as magic, app version, sha hashsum, etc.) that fit into 4096 bytes (in case of bootloader, meta starts from 0x0), the flash page size.
by dmitrij999
Thu Jan 15, 2026 12:35 pm
Forum: ESP-IDF
Topic: WiFi SoftAP clients lose connection when ESP32S3 scans WiFi
Replies: 1
Views: 709

WiFi SoftAP clients lose connection when ESP32S3 scans WiFi

Hello everyone!

I'm struggling with WiFi softAP connectivity stability. When ESP32S3 scans WiFi networks, softAP clients may lose connection to ESP32S3. It interrupts the device configuration.
The configuration is performed with HTTP server on ESP32S3.
First, I tried to scan WiFi networks on ...
by dmitrij999
Mon Jan 05, 2026 11:39 pm
Forum: ESP-IDF
Topic: Make LVGL/esp_lvgl_port to switch/reinitiate between big and little framebuffers
Replies: 0
Views: 647

Make LVGL/esp_lvgl_port to switch/reinitiate between big and little framebuffers

Hello everyone!

Usually, the LVGL buffers are located to PSRAM, and this is a bottleneck especially on ESP32-S3 and RGB displays.
If you perform OTA update (at least I tried the Arduino OTA implementation and not tested the ESP-IDF implementation yet, like, esp_ota_begin/esp_ota_end), you can see ...
by dmitrij999
Sun Aug 10, 2025 4:45 am
Forum: ESP-IDF
Topic: ESP32 kernel hang
Replies: 6
Views: 177

Re: ESP32 kernel hang

Could you please check and try to use vTaskDelay([at least one tick]) in loops?
In FreeRTOS, it says to scheduler that "not to switch to this task for this number of ticks". As well, it lets the scheduler to switch to another tasks and handle them correctly
by dmitrij999
Sun Aug 03, 2025 8:20 pm
Forum: ESP-IDF
Topic: problem with uploading pc encrypted firmware to the esp32-c3
Replies: 2
Views: 465

Re: problem with uploading pc encrypted firmware to the esp32-c3

I had the similar problem with ecryption on PC
Could you please try to encrypt with adding the —aes-xts flag?
by dmitrij999
Sun Aug 03, 2025 5:51 pm
Forum: General Discussion
Topic: FreeRTOS time anomalie?
Replies: 8
Views: 365

Re: FreeRTOS time anomalie?

I use esp_timer_get_time() function.

That's the reason
esp_timer is driven the software way within FreeRTOS, so due to some hardware spinlocks FreeRTOS scheduler may be locked.
I used PCNT for pulse counting.
For your purpose i'd advise you to check with hardware timer, I think it's the high ...
by dmitrij999
Sun Aug 03, 2025 9:37 am
Forum: General Discussion
Topic: FreeRTOS time anomalie?
Replies: 8
Views: 365

Re: FreeRTOS time anomalie?

What kind of timer for microseconds checking you use?
If it's the hardware timer, then it could be interrupts priorities: systick timer may have the highest interrupt priority.
What's the original purpose to account microseconds?
For flow counter I used PCNT

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