i.MX RT1020 EVK

i.MX RT1020 EVK is an evaluation kit by NXP company. This kit uses the i.MX RT1020 crossover MCU in LQFP144 package with ARM Cortex M7 core.

Features

  • Processor

    • MIMXRT1021DAG5A processor

  • Memory

    • 256 Mb SDRAM memory

    • 64 Mb QSPI Flash

    • TF socket for SD card

  • Display and Audio

    • Audio CODEC

    • 4-pole audio headphone jack

    • External speaker connection

    • Microphone

  • Connectivity

    • Micro USB host and OTG connectors

    • Ethernet (10/100T) connector

    • CAN transceivers

    • Arduino® interface

Serial Console

The EVK default console is on LPUART1, which is multiplexed onto the debug port (either OpenSDA or SEGGER JLink).

It runs at 115200,n,8,1.

LEDs and Buttons

LEDs

There is one user accessible LED status indicator located on the 1020-EVK, USERLED. The function of the LEDs include:

Pin

Description

Colour

D3

Power Supply

Green

D5

User LED

Green

D15

Reset LED

Red

This LED is not used by the board port unless CONFIG_ARCH_LEDS is defined. In that case, the usage by the board port is defined in include/board.h and src/imxrt_autoleds.c. The LED is used to encode OS-related events as documented in board.h

SYMBOL

Meaning

LED

LED_STARTED

NuttX has been started

OFF

LED_HEAPALLOCATE

Heap has been allocated

OFF

LED_IRQSENABLED

Interrupts enabled

OFF

LED_STACKCREATED

Idle stack created

ON

LED_INIRQ

In an interrupt

N/C

LED_SIGNAL

In a signal handler

N/C

LED_ASSERTION

An assertion failed

N/C

LED_PANIC

The system has crashed

FLASH

Thus if the LED is statically on, NuttX has successfully booted and is, apparently, running normally. If the LED is flashing at approximately 2Hz, then a fatal error has been detected and the system has halted.

Buttons

This IMXRT board has three external buttons

SW2

(IRQ88, ONOFF)

Not on a GPIO, No muxing

SW3

(IRQ88, POR)

Not on a GPIO, No muxing

SW4

(IRQ88, USER)

Wakeup, GPIO5-0

Configurations

netnsh

This configuration is similar to the nsh configuration except that is has networking enabled, both IPv4 and IPv6. This NSH configuration is focused on network-related testing.

nsh

Configures the NuttShell (nsh) located at examples/nsh. This NSH configuration is focused on low level, command-line driver testing. Built-in applications are supported, but none are enabled. This configuration does not support a network.