.. _mm_swiftio:

MadMachine SwiftIO
##################

Overview
********

The SwiftIO board, designed by MadMachine is the world's first board
designed with support for the modern `Swift language
<https://docs.swift.org/swift-book/>`_.  Zephyr provides basic
low-level capabilities for the SwiftIO board. Swift application would
run on top of Zephyr. More information about the board can be found
at:

- `MadMachine Homepage`_
- `SwiftIO API Reference`_


.. image:: mm_swiftio.jpg
   :align: center
   :alt: SwiftIO Board

Hardware
********

- i.MX RT1052 Cortex-M7 processor at 600MHz
- 8MB QSPI Flash, 32MB SDRAM
- On-board DAPLink debugger with serial port
- User RGB LED, USB 2.0 Connector, microSD slot


Supported Features
==================

The mm_swiftio board configuration supports the following hardware
features:

+-----------+------------+-------------------------------------+
| Interface | Controller | Driver/Component                    |
+===========+============+=====================================+
| NVIC      | on-chip    | nested vector interrupt controller  |
+-----------+------------+-------------------------------------+
| SYSTICK   | on-chip    | systick                             |
+-----------+------------+-------------------------------------+
| DISPLAY   | on-chip    | display                             |
+-----------+------------+-------------------------------------+
| GPIO      | on-chip    | gpio                                |
+-----------+------------+-------------------------------------+
| I2C       | on-chip    | i2c                                 |
+-----------+------------+-------------------------------------+
| SPI       | on-chip    | spi                                 |
+-----------+------------+-------------------------------------+
| UART      | on-chip    | serial port-polling;                |
|           |            | serial port-interrupt               |
+-----------+------------+-------------------------------------+
| USB       | on-chip    | USB device                          |
+-----------+------------+-------------------------------------+


Connections and IOs
===================

Note:
The following SwiftIO pinout diagram is used for Swift programming.
The Swift ID is not the same as the Zephyr driver ID.

+-----------+---------------+----------+---------------+--------------------------+
| Name                      | GPIO                     | Other peripherals        |
+===========+===============+==========+===============+==========+===============+
| Swift ID  | Pin name      | Swift ID | Zephyr driver | Swift ID | Zephyr driver |
+-----------+---------------+----------+---------------+----------+---------------+
| P0        | GPIO_AD_B1_03 | D0       | GPIO1_IO19    |          |               |
+-----------+---------------+----------+---------------+ UART0    | UART_2        |
| P1        | GPIO_AD_B1_02 | D1       | GPIO1_IO18    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P2        | GPIO_AD_B0_03 | D2       | GPIO1_IO03    |          |               |
+-----------+---------------+----------+---------------+ UART1    | UART_6        |
| P3        | GPIO_AD_B0_02 | D3       | GPIO1_IO02    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P4        | GPIO_B1_14    | D4       | GPIO2_IO30    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P5        | GPIO_B1_15    | D5       | GPIO2_IO31    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P6        | GPIO_B0_03    | D6       | GPIO2_IO03    |          |               |
+-----------+---------------+----------+---------------+          |               |
| P7        | GPIO_B0_02    | D7       | GPIO2_IO02    |          |               |
+-----------+---------------+----------+---------------+ SPI0     | SPI_4         |
| P8        | GPIO_B0_01    | D8       | GPIO2_IO01    |          |               |
+-----------+---------------+----------+---------------+          |               |
| P9        | GPIO_B0_00    | D9       | GPIO2_IO00    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P10       | GPIO_B1_03    | D10      | GPIO2_IO19    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P11       | GPIO_B1_02    | D11      | GPIO2_IO18    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P12       | GPIO_B1_01    | D12      | GPIO2_IO17    |          |               |
+-----------+---------------+----------+---------------+ UART2    | UART_4        |
| P13       | GPIO_B1_00    | D13      | GPIO2_IO16    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P14       | GPIO_AD_B1_15 | D14      | GPIO1_IO31    |          |               |
+-----------+---------------+----------+---------------+          |               |
| P15       | GPIO_AD_B1_14 | D15      | GPIO1_IO30    |          |               |
+-----------+---------------+----------+---------------+ SPI1     | SPI_3         |
| P16       | GPIO_AD_B1_13 | D16      | GPIO1_IO29    |          |               |
+-----------+---------------+----------+---------------+          |               |
| P17       | GPIO_AD_B1_12 | D17      | GPIO1_IO28    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P18       | GPIO_AD_B1_11 | D18      | GPIO1_IO27    |          |               |
+-----------+---------------+----------+---------------+ UART3    | UART_8        |
| P19       | GPIO_AD_B1_10 | D19      | GPIO1_IO26    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P20       | GPIO_AD_B1_09 | D20      | GPIO1_IO25    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P21       | GPIO_AD_B1_08 | D21      | GPIO1_IO24    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P22       | GPIO_AD_B1_05 | D22      | GPIO1_IO21    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P23       | GPIO_AD_B1_04 | D23      | GPIO1_IO20    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P24       | GPIO_AD_B0_15 | D24      | GPIO1_IO15    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P25       | GPIO_AD_B0_14 | D25      | GPIO1_IO14    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P26       | GPIO_B0_04    | D26      | GPIO2_IO04    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P27       | GPIO_B0_05    | D27      | GPIO2_IO05    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P28       | GPIO_B0_06    | D28      | GPIO2_IO06    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P29       | GPIO_B0_07    | D29      | GPIO2_IO07    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P30       | GPIO_B0_08    | D30      | GPIO2_IO08    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P31       | GPIO_B0_09    | D31      | GPIO2_IO09    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P32       | GPIO_B0_10    | D32      | GPIO2_IO10    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P33       | GPIO_B0_11    | D33      | GPIO2_IO11    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P34       | GPIO_B0_12    | D34      | GPIO2_IO12    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P35       | GPIO_B0_13    | D35      | GPIO2_IO13    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P36       | GPIO_B0_14    | D36      | GPIO2_IO14    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P37       | GPIO_B0_15    | D37      | GPIO2_IO15    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P38       | GPIO_B1_11    | D38      | GPIO2_IO27    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P39       | GPIO_B1_10    | D39      | GPIO2_IO26    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P40       | GPIO_B1_9     | D40      | GPIO2_IO25    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P41       | GPIO_B1_8     | D41      | GPIO2_IO24    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P42       | GPIO_B1_7     | D42      | GPIO2_IO23    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P43       | GPIO_B1_6     | D43      | GPIO2_IO22    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P44       | GPIO_B1_5     | D44      | GPIO2_IO21    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
| P45       | GPIO_B1_4     | D45      | GPIO2_IO20    |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
|           | GPIO_AD_B1_07 |          |               |          |               |
+-----------+---------------+----------+---------------+ I2C0     | I2C_3         |
|           | GPIO_AD_B1_06 |          |               |          |               |
+-----------+---------------+----------+---------------+----------+---------------+
|           | GPIO_AD_B1_00 |          |               |          |               |
+-----------+---------------+----------+---------------+ I2C1     | I2C_1         |
|           | GPIO_AD_B1_01 |          |               |          |               |
+-----------+---------------+----------+---------------+----------+---------------+


Programming and Flash
*************************

Build  applications as usual (see :ref:`build_an_application` for more details).

Configuring a Debug Probe
=========================

This board is configured by default to use the :ref:`opensda-daplink-onboard-debug-probe`,
however the :ref:`pyocd-debug-host-tools` do not yet support programming the
external flashes on this board so you must flash the device by copying files

Configuring a Console
=====================

Regardless of your choice in debug probe, we will use the OpenSDA
microcontroller as a USB-to-serial adapter for the serial console.

Connect a USB cable from your PC to Serial of SwiftIO.

Use the following settings with your serial terminal of choice (minicom, putty,
etc.):

- Speed: 115200
- Data: 8 bits
- Parity: None
- Stop bits: 1

Flashing
========

Here is an example for the :ref:`hello_world` application.

Connect a USB cable from your PC to "Serial" port of SwiftIO.
On Ubuntu, DAPLink debug probes appear on the host
computer as a USB disk mounted to ``/media/<user>/SWIFTIODBGR/``,
where ``<user>`` is your login name.

.. code-block:: console

    west build -b mm_swiftio samples/hello_world
    cp build/zephyr/zephyr.bin /media/<user>/SWIFTIODBGR/


Open a serial terminal, reset the board (press the "reset" button), and you should
see the following message in the terminal:

.. code-block:: console

   ***** Booting Zephyr OS v2.1.0-rc1 *****
   Hello World! mm_swiftio


.. _MadMachine Homepage:
   https://madmachine.io

.. _SwiftIO API Reference:
   https://madmachine.io/docs