by Radxa Limited

Image of Board

ROCK Pi 4 Model C+ is a single board computer (SBC) by a Rockchip RK3399-T hexa-core processor @ 1.5 GHz, equipped with 4GB RAM, and two micro HDMI ports to drive up to one 4K display, and one 2K display.

ROCK Pi 4 Model C+ support dual HDMI output, Micro HDMI 2.0 port up to 4K @ 60 Hz; Micro HDMI 2.0 port up to 2K @ 60 Hz; 4-lane MIPI DSI via FPC connector (only 2 lanes if the SPI flash is soldered to the board); Dual independent display support (not three before the 2K HDMI and MIPI DSI interfaces are multiplexed)

ROCK Pi 4 Model C+ including a 40-pin GPIO interface ,and also features a Gbit LAN for network, with dedicated bus and controller, it works without latency under heavy load network applications.On board 802.11 ac wifi offers 2.4G&5G WLAN connectivity. With Bluetooh 5.0, ROCK Pi benefits improved Bluetooth speed and greater range.

ROCK Pi 4 Model C+ provides support for Debian/Ubuntu Linux, Android 7.1/9.0/11 for the board, with open-source GPU drivers (that should be Panfrost), as well as hardware access/control library for Linux/Android. All RK3399/OP1 processors are software compatible

  • Rockchip RK3399-T 64bits hexa core processor
  • Dual Cortex-72, frequency 1.5GHz with qual Cortex-A53, frequency 1.0GHz
  • Mali T860MP4 gpu, support OpenGL ES 1.1/2.0/3.0/3.1/3.2, Vulkan 1.0, Open CL 1.1 1.2, DX11.
  • 64bit dual channel LPDDR4@3200Mb/s, 1GB/2GB/4GB optioal
  • eMMC connector
  • μSD card (μSD slot supports up to 256 GB μSD card)
  • One Micro HDMI 2K up to 1440P@60
  • One Micro HDMI 4K 2.0 up to 4k@60
  • MIPI DSI 4 lanes via FPC connector
  • Only two of HDMI 2k, HDMI 4K and MIPI DSI can work at the same time.
  • 3.5mm jack HD codec that supports up to 24-bit/96KHz audio.
  • MIPI CSI 2 lanes via FPC connector, support up to 800 MP camera.
  • 802.11 ac wifi
  • BT 5.0 with external antenna
  • USB 3.0 OTG X1, upper one, software configurable to be host or OTG,
  • USB 3.0 HOST X1, dedicated USB 3.0 channel, lower one
  • USB 2.0 HOST X2
  • GbE LAN with Power over Ethernet (PoE) support
  • additional HAT is required for powering from PoE
  • 40-pin expansion header
  • 2 x UART
  • 2 x SPI bus
  • 3 x I2C bus
  • 1 x PCM/I2S
  • 1 x SPDIF
  • 2 x PWM
  • 1 x ADC
  • 6 x GPIO
  • 2 x 5V DC power in
  • 2 x 3.3V DC power in
  • RTC



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Adafruit Blinka Installation

We use a special library called adafruit_blinka (named after Blinka, the CircuitPython mascot) to provide the layer that translates the CircuitPython hardware API to whatever library the Linux board provides.

For example, on Raspberry Pi we use the python RPi.GPIO library. For any I2C interfacing we'll use ioctl messages to the /dev/i2c device. For SPI we'll use the spidev python library, etc. These details don't matter so much because they all happen underneath the adafruit_blinka layer.