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.
Search found 77 matches
- Mon Apr 27, 2020 2:48 pm
- Forum: ESP32 Arduino
- Topic: WROVER Dev Kit 4.1 LCD and SD Not Working
- Replies: 14
- Views: 23630
- Fri Apr 10, 2020 6:26 am
- Forum: ESP32 Arduino
- Topic: ESP32 prints some weird characters on i2c lcd using AsyncWebServer
- Replies: 3
- Views: 6002
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.
- 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: 27149
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...
- Fri Aug 02, 2019 8:08 am
- Forum: ESP32 Arduino
- Topic: Two ESP32-CAM synchronously streaming to PI4
- Replies: 10
- Views: 16817
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...
- Thu Aug 01, 2019 7:55 am
- Forum: General Discussion
- Topic: ESP32-CAM Stop Working
- Replies: 2
- Views: 5750
Re: ESP32-CAM Stop Working
please try to diagnose the problem a bit more. Just stop working does not give any clues I have ESP32 cams running for days without issues. What is the XCLK that you are using? What is in the logs when they stop? Which example are you running?
- Wed Jun 12, 2019 7:11 am
- Forum: ESP-WHO
- Topic: ESP-EYE __ Camera init failed with error 0x20003
- Replies: 1
- Views: 19976
Re: ESP-EYE __ Camera init failed with error 0x20003
Can you swap the sensor on that board and try again? Put one from the other working cams and see if it's the board or the sensor that is faulty (I will bet on the sensor here). Error means that the ESP was not able to communicate over I2C with the camera, but the line before that means that the came...
- Wed Jun 12, 2019 7:02 am
- Forum: ESP32 Arduino
- Topic: ESP32 CAM direct access to image data
- Replies: 27
- Views: 101206
Re: ESP32 CAM direct access to image data
I don't agree that things are not well documented. The camera driver is rather a basic thing. You setup the camera and start grabbing frame buffers from it. Structure of the frame buffer is in the header. Frame buffer in every case that I have seen contains an array of pixels in the form of (width *...
- Tue Jun 11, 2019 2:09 pm
- Forum: ESP32 Arduino
- Topic: ESP32 CAM direct access to image data
- Replies: 27
- Views: 101206
Re: ESP32 CAM direct access to image data
I'm really sorry you find this so frustrating. I had no idea that "GRAYSCALE", "RGB565" or any other of the formats need explanation. 1. GRAYSCALE means values from 0 to 255 for each pixel 2. RGB565 means that a 16 bit value is per pixel and is comprised from 5 bits red, 6 bits green and 5 bits blue...
- Tue Mar 19, 2019 4:01 pm
- Forum: General Discussion
- Topic: ESP32 Bluetooth SPP with bidirectional communication (send and receive)
- Replies: 22
- Views: 59954
Re: ESP32 Bluetooth SPP with bidirectional communication (send and receive)
We already have a library and example in Arduino for SPP use: https://github.com/espressif/arduino-es ... rialBT.ino
- Fri Mar 01, 2019 10:00 am
- Forum: ESP32 Arduino
- Topic: SPI slave mode, CLK cannot be on input only pin (see GitHub issue #2455)
- Replies: 3
- Views: 6083
Re: SPI slave mode, CLK cannot be on input only pin (see GitHub issue #2455)
I'll try to update the IDF libs over the weekend. That should fix the issue