MangoPi MQ Pro Support

This is the base Nerves System configuration for the MangoPi MQ Pro.

The MangoPi MQ Pro works well, but there are active updates upstream and here. Backwards incompatible changes may be out of our control.

^{Image credit}

Feature	Description
CPU	1 GHz 64 bit RISC-V
Memory	512 MB or 1 GB DRAM
Storage	MicroSD
Linux kernel	6.1 w/ patches
IEx terminal	UART ttyS0
GPIO, I2C, SPI	Yes - Elixir Circuits
Display	Yes, but not supported yet
ADC	No
PWM	8 channels (4 exposed), but no Elixir support
UART	ttyS0
Camera	Yes, but not supported yet
Ethernet	No
WiFi	Onboard WiFi
RTC	No
HW Watchdog	Yes

Using

The most common way of using this Nerves System is create a project with mix nerves.new and add mangopi_mq_pro references where needed and in a similar way to the default systems like bbb, etc. Then export MIX_TARGET=mangopi_mq_pro. See the Getting started guide for more information.

If you need custom modifications to this system for your device, clone this repository and update as described in Making custom systems.

Example use

This example assumes some familiarity with Nerves. To use this system, you'll need OTP 25. Follow the Nerves installation instructions for additional system dependencies.

Creating a new hello world application:

mix nerves.new hello_mango
cd hello_mango

Open up your mix.exs and add :mangopi_mq_pro to the @all_targets list at the top. It's ok to delete targets that you don't plan on using.

Then add the :nerves_system_mango_mq_pro dependency to the deps function:

    {:nerves_system_mangopi_mq_pro, "~> 0.1", runtime: false, targets: :mangopi_mq_pro},

This will load the latest released version. To use the latest code on the main branch here, add the following line:

    {:nerves_system_mangopi_mq_pro, runtime: false, targets: :mangopi_mq_pro, nerves: [compile: true], git: "https://github.com/nerves-project/nerves_system_mangopi_mq_pro", branch: "main"}

To build and write to a MicroSD card, run:

export MIX_TARGET=mangopi_mq_pro
mix deps.get
mix firmware
mix burn

Console access

The console is configured to output to the UART on pins 8 and 10 on the 40-pin GPIO connector. This is just like the Raspberry Pi. A 3.3V FTDI cable is needed to access the output.

Networking

The board has two network interfaces, a WiFi module and a virtual Ethernet on the USB C connector marked "OTG". If virtual Ethernet isn't working for you, try a different USB cable. You're welcome.

GPIO

The following table is a mapping between the logical GPIO numbers used in software (sysfs, Circuits.GPIO), and the pin numbers on the 20x2 Raspberry Pi header. For example, to control pin 11 you would open a connection to GPIO 117.

{:ok, pin} = Circuits.GPIO.open(117, :output)

The comments in the "Note" columns come from the official schematic.

GPIO	Note	Pin	Pin	Note	GPIO
	3v3	1	2	Vin
205	SDA	3	4	Vin
204	SCL	5	6	GND
39	MCLK	7	8	TX0	40
	GND	9	10	RX0	41
117	TX1	11	12	I2S_CLK / PWM0 / Audio	37
118	RX1	13	14	GND
32	PWM3	15	16	PWM4	33
	3v3	17	18	DC	110
	MOSI	19	20	GND
	MISO	21	22	RX2	65
	SCLK	23	24	CS0
	GND	25	26	CS1	111
145	SDA	27	28	SCL	144
42		29	30	GND
43		31	32	TX2	64
44		33	34	GND
38	PWM1 / I2S_FS	35	36	DI2	34
113		37	38	I2S_DI0	35
	GND	39	40	I2S_D0	36

You can also get the pinout at the IEx prompt by using the pinout library.

Pinout diagram

Schematics and datasheets

• Schematics
• IBOM - Interactive web page to help you find what part is located where
• D1 user manual (PDF, 1390 pages)

Thanks

The most helpful Allwinner D1 information comes from linux-sunxi.org/Allwinner_Nezha. All of the work here wouldn't have been possible with out it. Thanks especially to smaeul's Allwinner D1 Linux fork

Here are more useful links:

• bret.dk's ARMBian post
• NixOS on D1
• YuzukiHD Buildroot
• DongshanPI Store

Image credit: This image is from mangopi.cc.