This is the documentation for the latest (main) development branch of Zephyr. If you are looking for the documentation of previous releases, use the drop-down menu on the left and select the desired version.

MadMachine SwiftIO Feather

Overview

The SwiftIO Feather board, designed by MadMachine is designed with support for the modern Swift language. Zephyr provides basic low-level capabilities for the SwiftIO Feather board. Swift application would run on top of Zephyr. More information about the board can be found at:

• MadMachine Homepage

• SwiftIO API Reference

Hardware

• MIMXRT1062DVL6B MCU (Cortex-M7 at 600MHz, 2048KB on-chip memory)

• Memory

  • 8MB QSPI Flash

  • 32MB SDRAM

  • TF socket for SD card

• USB

  • USB-C 2.0 OTG connector

• Power

  • 5V USB power

  • 4.2V DC jack

• Debug

  • SWD connector

• RGB LED

Supported Features

The mm_feather 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
I2S	on-chip	I2S
USB	on-chip	USB device

Connections and IOs

Note: The following SwiftIO Feather 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_04	D0	GPIO1_IO20
P1	GPIO_AD_B1_08	D1	GPIO1_IO24
P2	GPIO_AD_B1_09	D2	GPIO1_IO25
P3	GPIO_AD_B1_10	D3	GPIO1_IO26	UART1	UART_8
P4	GPIO_AD_B1_11	D4	GPIO1_IO27
P5	GPIO_AD_B1_12	D5	GPIO1_IO28
P6	GPIO_AD_B1_15	D6	GPIO1_IO31	SPI0	SPI_3
P7	GPIO_AD_B1_14	D7	GPIO1_IO30
P8	GPIO_AD_B1_13	D8	GPIO1_IO29
P9	GPIO_AD_B1_03	D9	GPIO1_IO19	UART0	UART_2
P10	GPIO_AD_B1_02	D10	GPIO1_IO18
P11	GPIO_AD_B1_05	D11	GPIO1_IO21
P12	GPIO_AD_B0_14	D12	GPIO1_IO14	CAN0	CAN_3
P13	GPIO_AD_B0_15	D13	GPIO1_IO15
P14	GPIO_B0_00	D14	GPIO2_IO00
P15	GPIO_B1_03	D15	GPIO2_IO19
P16	GPIO_B1_02	D16	GPIO2_IO18
P17	GPIO_B1_01	D17	GPIO2_IO17	UART2	UART_4
P18	GPIO_B1_00	D18	GPIO2_IO16
P19	GPIO_B1_15	D19	GPIO2_IO31
P20	GPIO_B1_14	D20	GPIO2_IO30
P21	GPIO_B0_03	D21	GPIO2_IO03	SPI1	SPI_4
P22	GPIO_B0_02	D22	GPIO2_IO02
P23	GPIO_B0_01	D23	GPIO2_IO01
P24	GPIO_B0_04	D24	GPIO2_IO04
P25	GPIO_B0_05	D25	GPIO2_IO05
P26	GPIO_B0_06	D26	GPIO2_IO06
P27	GPIO_B0_07	D27	GPIO2_IO07
P28	GPIO_B0_08	D28	GPIO2_IO08
P29	GPIO_B0_09	D29	GPIO2_IO09
P30	GPIO_B0_10	D30	GPIO2_IO10
P31	GPIO_B0_11	D31	GPIO2_IO11
P32	GPIO_B0_12	D32	GPIO2_IO12
P33	GPIO_B0_13	D33	GPIO2_IO13
P34	GPIO_B0_14	D34	GPIO2_IO14
P35	GPIO_B0_15	D35	GPIO2_IO15
	GPIO_AD_B1_07		GPIO1_IO23	I2C0	I2C_3
	GPIO_AD_B1_06		GPIO1_IO22
	GPIO_AD_B1_00		GPIO1_IO16	I2C1	I2C_1
	GPIO_AD_B1_00		GPIO1_IO17

Programming and Flash

Build and flash applications as usual (see Building an Application and Run an Application for more details).

Configuring a Console

Connect a USB-to-serial adapter from your PC to corresponding UART pins of SwiftIO Feather.

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 Hello World application.

Connect a DAPLink debuger from your PC to corresponding SWD pins of SwiftIO Feather.

# From the root of the zephyr repository
west build -b mm_feather samples/hello_world
west flash

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

*** Booting Zephyr OS build v2.6.0-rc1-301-gd9c666a5abf8  ***
Hello World! mm_feather

Debugging

Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b mm_feather samples/hello_world
west debug

Open a serial terminal, step through the application in your debugger, and you should see the following message in the terminal:

*** Booting Zephyr OS build v2.6.0-rc1-301-gd9c666a5abf8  ***
Hello World! mm_feather