I2C

In this document, we use Leetop A206 carrier board. Operations can be slightly different if you use other models of carrier boards.

The carrier board of Mixtile Core 3588E (hereinafter referred to as Core 3588E) provides access to several peripheral interfaces through the 40-pin expansion header, including VCC, GND, GPIO, I²C, I²S, UART, and SPI interfaces. The following figure shows the pin layout.

This document describes how to connect an OLED display module via the I²C interfaces.

For more information about pin assignment and definitions of Core 3588E, see Core 3588E Pin Definition.

Preparations

• Set up connections for Core 3588E.
• Log in to Core 3588E using one of the following methods:
  • Login using the ADB tool
  • Login using a serial communication tool
  • Login using SSH
• An OLED display module
• An OLED I²C file: oled-i2c

Steps

Step 1. Connect the OLED display module to the 40-pin header. The pin matching is as follows:

Step 2. Download the oled-i2c file and copy it to the Core 3588E directory.

• Using the ADB tool:

adb push oled-i2c /home/mixtile

• Using the serial communication tool or SSH:

scp oled-i2c mixtile@Core 3588E IP address:/home/mixtile

Step 3. Navigate to the Core 3588E console.

Step 4. Enter the directory /home/mixtile and grant permission to access oled-i2c:

sudo chmod +x oled-i2c

Step 5. Under the directory /home/mixtile, run the following command:

sudo ./oled-i2c /dev/i2c-1

Note:

If you connect the display module to I2C0, run sudo ./oled-i2c /dev/i2c-0.

You can see that the OLED display module shows text Core3588E, as shown below.