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NXP MIMXRT1020-EVK

Overview

The i.MX RT1020 expands the i.MX RT crossover processor families by providing high-performance feature set in low-cost LQFP packages, further simplifying board design and layout for customers. The i.MX RT1020 runs on the Arm® Cortex®-M7 core at 500 MHz.

MIMXRT1020-EVK

Hardware

  • MIMXRT1021DAG5A MCU

  • Memory

    • 256 Mbit SDRAM

    • 64 Mbit QSPI Flash

    • TF socket for SD card

  • Connectivity

    • 10/100 Mbit/s Ethernet PHY

    • Micro USB host and OTG connectors

    • CAN transceivers

    • Arduino interface

  • Audio

    • Audio Codec

    • 4-pole audio headphone jack

    • Microphone

    • External speaker connection

  • Power

    • 5 V DC jack

  • Debug

    • JTAG 20-pin connector

    • OpenSDA with DAPLink

For more information about the MIMXRT1020 SoC and MIMXRT1020-EVK board, see these references:

Supported Features

The mimxrt1020_evk board configuration supports the following hardware features:

Interface

Controller

Driver/Component

NVIC

on-chip

nested vector interrupt controller

SYSTICK

on-chip

systick

GPIO

on-chip

gpio

I2C

on-chip

i2c

UART

on-chip

serial port-polling; serial port-interrupt

ENET

on-chip

ethernet

USB

on-chip

USB device

The default configuration can be found in the defconfig file: boards/arm/mimxrt1020_evk/mimxrt1020_evk_defconfig

Other hardware features are not currently supported by the port.

Connections and I/Os

The MIMXRT1020 SoC has five pairs of pinmux/gpio controllers.

Name

Function

Usage

GPIO_AD_B0_05

GPIO

LED

GPIO_AD_B0_06

LPUART1_TX

UART Console

GPIO_AD_B0_07

LPUART1_RX

UART Console

GPIO_AD_B1_08

LPUART2_TX

UART BT HCI

GPIO_AD_B1_09

LPUART2_RX

UART BT HCI

GPIO_AD_B1_14

LPI2C1_SCL

I2C

GPIO_AD_B1_15

LPI2C1_SDA

I2C

GPIO_SD_B1_02

LPI2C4_SCL

I2C

GPIO_SD_B1_03

LPI2C4_SDA

I2C

WAKEUP

GPIO

SW0

GPIO_AD_B0_04

ENET_RST

Ethernet

GPIO_AD_B0_08

ENET_REF_CLK

Ethernet

GPIO_AD_B0_09

ENET_RX_DATA01

Ethernet

GPIO_AD_B0_10

ENET_RX_DATA00

Ethernet

GPIO_AD_B0_11

ENET_RX_EN

Ethernet

GPIO_AD_B0_12

ENET_RX_ER

Ethernet

GPIO_AD_B0_13

ENET_TX_EN

Ethernet

GPIO_AD_B0_14

ENET_TX_DATA00

Ethernet

GPIO_AD_B0_15

ENET_TX_DATA01

Ethernet

GPIO_AD_B1_06

ENET_INT

Ethernet

GPIO_EMC_41

ENET_MDC

Ethernet

GPIO_EMC_40

ENET_MDIO

Ethernet

System Clock

The MIMXRT1020 SoC is configured to use the 24 MHz external oscillator on the board with the on-chip PLL to generate a 500 MHz core clock.

Serial Port

The MIMXRT1020 SoC has eight UARTs. LPUART1 is configured for the console, LPUART2 for the Bluetooth Host Controller Interface (BT HCI), and the remaining are not used.

Programming and Debugging

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

Configuring a Debug Probe

A debug probe is used for both flashing and debugging the board. This board is configured by default to use the OpenSDA DAPLink Onboard Debug Probe, however the pyOCD Debug Host Tools do not yet support programming the external flashes on this board so you must reconfigure the board for one of the following debug probes instead.

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. Check that jumpers J25 and J26 are on (they are on by default when boards ship from the factory) to connect UART signals to the OpenSDA microcontroller.

Connect a USB cable from your PC to J23.

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.

# From the root of the zephyr repository
west build -b mimxrt1020_evk samples/hello_world
west flash

Open a serial terminal, reset the board (press the SW5 button), and you should see the following message in the terminal:

***** Booting Zephyr OS v1.14.0-rc1 *****
Hello World! mimxrt1020_evk

Debugging

Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b mimxrt1020_evk 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 v1.14.0-rc1 *****
Hello World! mimxrt1020_evk