Search found 73 matches

by ESP_Me-no-dev
Tue Sep 29, 2020 3:57 pm
Forum: ESP-WHO
Topic: FORMAT_RGB565 and FORMAT_RGB888 DO NOT WORK!!!
Replies: 7
Views: 797

Re: FORMAT_RGB565 and FORMAT_RGB888 DO NOT WORK!!!

frame2bmp outputs Microsotft Bitmap, not RGB888. It just so happened that the BMP file contains actually RGB888 after the header :)
by ESP_Me-no-dev
Fri Sep 25, 2020 8:37 am
Forum: ESP-WHO
Topic: FORMAT_RGB565 and FORMAT_RGB888 DO NOT WORK!!!
Replies: 7
Views: 797

Re: FORMAT_RGB565 and FORMAT_RGB888 DO NOT WORK!!!

BMP files have a header before the pixels that have info on what that image is, what resolution and more. If you need only the pixels, skip the first 54 bytes. If you want to open the BMP on a computer, do not skip them :) Grabing in JPEG and converting is possible because it happens in a thread and...
by ESP_Me-no-dev
Thu Sep 24, 2020 9:52 pm
Forum: ESP-WHO
Topic: FORMAT_RGB565 and FORMAT_RGB888 DO NOT WORK!!!
Replies: 7
Views: 797

Re: FORMAT_RGB565 and FORMAT_RGB888 DO NOT WORK!!!

I'm not very good with explanations, but I will do my best here. 1. ESP32 is MCU, not a computer. As such it has limited amount of memory and processing power. 2. It is just not technically possible to acquire all of the bytes necessary for 888 and write them to the PSRAM chip. Even on resolutions h...
by ESP_Me-no-dev
Mon May 25, 2020 9:12 am
Forum: ESP32 Arduino
Topic: approximate timeline for IDF 4 for arduino esp32?
Replies: 1
Views: 470

Re: approximate timeline for IDF 4 for arduino esp32?

There is a branch in the arduino repository for IDF4.0 that you can try, but to answer your question, wee will skip 4.0 and go directly to 4.2 (current IDF master) because of support for ESP32-S2. If you want to try that, there is an "esp32s2" branch that you can checkout
by ESP_Me-no-dev
Thu May 14, 2020 8:52 am
Forum: General Discussion
Topic: When will ESP32-S2 add to Arduino?
Replies: 7
Views: 3236

Re: When will ESP32-S2 add to Arduino?

It's already added, just not in the master branch. Check the arduino repo for "esp32s2" branch and give it a go. Be warn that it's a work in progress so some things might be broken.
by ESP_Me-no-dev
Mon Apr 27, 2020 2:48 pm
Forum: ESP32 Arduino
Topic: WROVER Dev Kit 4.1 LCD and SD Not Working
Replies: 14
Views: 5707

Re: WROVER Dev Kit 4.1 LCD and SD Not Working

OK So I see two issues.

1. You should use SDMMC on Wrover-Kit
2. If you want to use SPI and use the LCD as well, you need to init first a new SPI port (HSPI) and then init the SD card to use that port.

LCD and SD do not share pins and the SPI port is going to the device initialised last.
by ESP_Me-no-dev
Fri Apr 10, 2020 6:26 am
Forum: ESP32 Arduino
Topic: ESP32 prints some weird characters on i2c lcd using AsyncWebServer
Replies: 3
Views: 1950

Re: ESP32 prints some weird characters on i2c lcd using AsyncWebServer

You are not sending a response to the request in the alarm handler :) You must request->send(response) in every handler.
by ESP_Me-no-dev
Tue Oct 29, 2019 8:04 am
Forum: ESP-WHO 中文讨论版
Topic: esp-who ov2640驱动中曝光值的设置问题
Replies: 1
Views: 8870

Re: esp-who ov2640驱动中曝光值的设置问题

The exposure settings on those sensors is actually measured in lines. So for max res of 1600x1200 you can expose for the whole duration of 1200 lines. Not sure if that makes any sense :). For smaller resolutions you get less lines and less exposure. There are 3 main resolutions from which all others...
by ESP_Me-no-dev
Fri Aug 02, 2019 8:08 am
Forum: ESP32 Arduino
Topic: Two ESP32-CAM synchronously streaming to PI4
Replies: 10
Views: 3538

Re: Two ESP32-CAM synchronously streaming to PI4

Hi Lucas, As far as I can understand, you want to collect all frames in the loop and give the latest to the web server. Am I correct? I will continue based on that assumption :) You should not use busy loops inside threads, instead you should use one of the FreeRTOS objects that allow for threads to...

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