How to setup i2s lcd parallel output mode in ESP32C3?

qujianbing
Posts: 5
Joined: Sat Jul 23, 2016 2:15 pm

How to setup i2s lcd parallel output mode in ESP32C3?

Postby qujianbing » Fri Aug 27, 2021 12:26 am

Anyone knows how to setup I2S parallel output mode in ESP32C3?
I want to control 4000 LEDS with ESP32C3, but could not find any example to start with it.
I know we can setup parallel output mode in ESP32.

Best Wishes,
Jerry

ESP_Sprite
Posts: 9725
Joined: Thu Nov 26, 2015 4:08 am

Re: How to setup i2s lcd parallel output mode in ESP32C3?

Postby ESP_Sprite » Fri Aug 27, 2021 3:49 am

Sorry, the ESP32C3 does not have the parallel mode. As an alternative, you can perhaps control 2 LED strips using the RMT, or 4 LED strips by making smart use of the quad-spi mode of the SPI peripheral.

qujianbing
Posts: 5
Joined: Sat Jul 23, 2016 2:15 pm

Re: How to setup i2s lcd parallel output mode in ESP32C3?

Postby qujianbing » Fri Aug 27, 2021 3:15 pm

Thanks for your reply.

From description of ESP32C3, I found the following statements:
The I2S peripherals also support LCD mode for communicating data over a parallel bus, as used by some LCD displays and camera modules. LCD mode has the following operational modes:
LCD master transmitting mode
Camera slave receiving mode
ADC/DAC mode
(https://docs.espressif.com/projects/esp ... s/i2s.html)

If we could setup the LCD master mode correctly, does it mean multiple led strips can be controlled by 1 esp32c3?

ESP_Sprite
Posts: 9725
Joined: Thu Nov 26, 2015 4:08 am

Re: How to setup i2s lcd parallel output mode in ESP32C3?

Postby ESP_Sprite » Sat Aug 28, 2021 2:01 am

Those docs are wrong and that section needs to be removed from the C3 docs, thanks for pointing it out.

Edit: If you look at the master branch, the LCD/cam section already is removed there.

qujianbing
Posts: 5
Joined: Sat Jul 23, 2016 2:15 pm

Re: How to setup i2s lcd parallel output mode in ESP32C3?

Postby qujianbing » Sat Aug 28, 2021 7:15 am

Thank you for your clarification. :)

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