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Onion Omega2 {#omega2}

The Omega2 board is based on the MediaTek MT7688 system on a chip, which includes a MIPS 24KEc 580 MHz processor and 128 megabytes of RAM.

Features:

  • 15 GPIO pins
  • 2 PWM pins
  • 2 UART ports
  • 1 SPI master port
  • 1 I2C port
  • 1 I2S port (not supported by libmraa)

Pinout

Revision Support

  • Omega2
  • Omega2+

Pin Mapping

Left side:

MRAA Number Function
--- GND
1 GPIO11
2 GPIO3, (I2S CLK)
3 GPIO2, (I2S WS)
4 GPIO17
5 GPIO16
6 GPIO15
7 GPIO46, UART RX1
8 GPIO45, UART TX1
9 SPI MISO
10 SPI MOSI
11 SPI SCK
12 GPIO6, SPI CS
13 GPIO1, (I2S SDO)
14 GPIO0, (I2S SDI)
--- (Reset)

Right side:

MRAA Number Function
--- GND
--- VIN 3V3
--- (USB D+)
--- (USB D-)
20 GPIO13, UART RX0
21 GPIO12, UART TX0
22 FW RST
--- VOUT 3V3
--- (Eth TX-)
--- (Eth TX+)
--- (Eth RX-)
--- (Eth RX+)
28 GPIO18, PWM0
29 GPIO19, PWM1
30 GPIO4, I2C SCL
31 GPIO5, I2C SDA