# MangoPi MQ Pro Support
[](https://circleci.com/gh/nerves-project/nerves_system_mangopi_mq_pro)
[](https://hex.pm/packages/nerves_system_mangopi_mq_pro)
This is the base Nerves System configuration for the [MangoPi MQ Pro](#mangopi).
*The MangoPi MQ Pro works well, but there are active updates upstream and here. Backwards incompatible changes may be out of our control.*
<br><sup>[Image credit](#mangopi)</sup>
| 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](https://github.com/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](https://hexdocs.pm/nerves/getting-started.html#creating-a-new-nerves-app)
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](https://hexdocs.pm/nerves/customizing-systems.html).
## Example use
This example assumes some familiarity with Nerves. To use this system, you'll
need OTP 25. Follow the [Nerves installation
instructions](https://github.com/nerves-project/nerves/blob/main/docs/Installation.md)
for additional system dependencies.
Creating a new hello world application:
```sh
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:
```elixir
{: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:
```elixir
{: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:
```sh
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.
```elixir
{:ok, pin} = Circuits.GPIO.open(117, :output)
```
The comments in the "Note" columns come from the [official schematic](https://mangopi.org/_media/mq-pro-sch-v12.pdf#page=3).
| 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](https://hex.pm/packages/pinout) library.
## Pinout diagram
## Schematics and datasheets
* [Schematics](https://mangopi.cc/_media/mq-pro-sch-v12.pdf)
* [IBOM](https://mangopi.cc/_media/mq-pro-v12-ibom.html) - Interactive web page
to help you find what part is located where
* [D1 documentation](https://github.com/mangopi-sbc/MQ-Pro/tree/main/3.Docs)
## Thanks
The most helpful Allwinner D1 information comes from
[linux-sunxi.org/Allwinner_Nezha](https://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](https://github.com/smaeul/linux/tree/riscv/d1-wip/arch/riscv)
Here are more useful links:
* [bret.dk's ARMBian post](https://bret.dk/armbian-on-the-mangopi-mq-pro/)
* [NixOS on D1](https://github.com/chuangzhu/nixos-sun20iw1p1)
* [YuzukiHD Buildroot](https://github.com/YuzukiHD/Buildroot-YuzukiSBC)
* [DongshanPI Store](https://www.aliexpress.com/item/3256803971669780.html)
[Image credit](#mangopi): This image is from [mangopi.cc](https://mangopi.cc/mangopi_mqpro).
