Search found 101 matches

by WangYX
Thu Apr 02, 2026 1:15 pm
Forum: Showcase
Topic: [ESP32-P4] esp-video -- Reading HDMI output using an ESP32-P4
Replies: 0
Views: 121

[ESP32-P4] esp-video -- Reading HDMI output using an ESP32-P4

The current ESP32-P4 supports the LT6911D chip to read HDMI video streams.
This provides a method for seamlessly integrating HDMI video streaming into various applications. Please refer to [esp-video/https://github.com/espressif/esp-video-components/tree/master/esp_cam_sensor#supported-hdmi-to-mipi ...
by WangYX
Fri Mar 06, 2026 7:01 am
Forum: General Discussion
Topic: Global shutter camera esp32
Replies: 1
Views: 328

Re: Global shutter camera esp32

Please check your configuration menu to see if the driver for the sensor is enabled. https://github.com/espressif/esp32-came ... onfig#L129
On the other hand, this type of sensor will most likely require an ISP to function properly, so the better choice would actually be the ESP32-P4.
by WangYX
Thu Oct 09, 2025 11:58 am
Forum: ESP-IDF
Topic: ESP32-P4 Camera App: esp_cam_ctlr_receive() hangs
Replies: 10
Views: 5584

Re: ESP32-P4 Camera App: esp_cam_ctlr_receive() hangs

The esp_cam_ctlr_receive function is always available. However, as a passive receiver, the ESP32 requires certain parameters configured based on the characteristics of the transmitting device (i.e., the camera sensor) to function properly. This is precisely what the esp-video component provides ...
by WangYX
Thu Sep 25, 2025 11:46 am
Forum: ESP-IDF
Topic: ESP32-P4 Camera App: esp_cam_ctlr_receive() hangs
Replies: 10
Views: 5584

Re: ESP32-P4 Camera App: esp_cam_ctlr_receive() hangs

Using the esp-video component will make it easier to capture image data from the camera sensor. There are some examples here. If an LCD is a must, you can try using example video_lcd_display.
by WangYX
Mon Jul 07, 2025 2:29 am
Forum: ESP IoT Solution 中文讨论版
Topic: 摄像头图像颜色暗淡
Replies: 1
Views: 8234

Re: 摄像头图像颜色暗淡

和使用的摄像头和显示屏有关系。对于 S3,它只是从 sensor 接收数据,图像数据的好坏完全是 sensor 的寄存器控制的。如需改善,需要自己根据 sensor 的 datasheet 进行排查。
对于 P4,可以检查是否打开了[ IPA][/https://github.com/espressif/esp-video- ... -pipelines]。
by WangYX
Wed Oct 09, 2024 6:50 am
Forum: Hardware
Topic: ESP32-CAM camera module problem
Replies: 1
Views: 9348

Re: ESP32-CAM camera module problem

There is an I2C pull-up resistor in the circuit of the ov2640 module. This may be one of the reasons for I2C communication errors.
by WangYX
Tue Jul 23, 2024 2:13 am
Forum: ESP-WHO 中文讨论版
Topic: esp-who例程自定义camera引脚不能大于39是为何?
Replies: 3
Views: 27264

Re: esp-who例程自定义camera引脚不能大于39是为何?

这取决于配置菜单的设计,一般这种设计总是参考官方开发板做一些限制,比如一些管脚内部使用了,或者一些关键只能作为 input,不能作为 output,可以自官网下载对应芯片、模组的 datasheet、技术参考手册查询。
by WangYX
Thu Jul 18, 2024 6:07 am
Forum: ESP-WHO 中文讨论版
Topic: esp-who例程自定义camera引脚不能大于39是为何?
Replies: 3
Views: 27264

Re: esp-who例程自定义camera引脚不能大于39是为何?

不要依赖外部终端给出的配置项。你总可以在代码中指定要使用的 GPIO。
但是对于提到的 GPIO40,它不一定是空闲的,因为技术手册中提到,一些模组默认使用它作为 MTCK,不用于其他用途:
MTCK.PNG
MTCK.PNG (20 KiB) Viewed 27212 times
by WangYX
Thu Apr 25, 2024 3:17 am
Forum: ESP-WHO
Topic: Saved Image Size
Replies: 5
Views: 52053

Re: Saved Image Size

Yes, when "still" is enabled, the backend is actually constantly pushing images to the web page. Therefore, there is a certain time difference between what you see and what you save.
This example is not very compatible, here is a simpler example to ensure WYSIWYG.
by WangYX
Thu Apr 25, 2024 3:14 am
Forum: Showcase
Topic: How to Use BBCode: A Complete Guide
Replies: 0
Views: 10199

How to Use BBCode: A Complete Guide

The syntax of this website is BBcode, here is a guide. Please enjoy.

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