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

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

The MIMXRT1020-EVK includes the NXP OpenSDA serial and debug adapter built into the board to provide debugging, flash programming, and serial communication over USB.

To use the Segger J-Link tools with OpenSDA, follow the instructions in the Segger J-Link page using the Segger J-Link OpenSDA V2.1 Firmware. The Segger J-Link tools are the default for this board, therefore it is not necessary to set OPENSDA_FW=jlink explicitly when you invoke make debug.

With these mechanisms, applications for the mimxrt1020_evk board configuration can be built and debugged in the usual way (see Build an Application and Run an Application for more details).

The pyOCD tools do not yet support this SoC.

Flashing

The Segger J-Link firmware does not support command line flashing, therefore the usual flash build system target is not supported. Instead, see the https://www.nxp.com/docs/en/application-note/AN12108.pdf for flashing instructions.

Debugging

This example uses the Hello World sample with the Segger J-Link tools. Run the following to build your Zephyr application, invoke the J-Link GDB server, attach a GDB client, and program your Zephyr application to flash. It will leave you at a GDB prompt.

# On Linux/macOS
cd $ZEPHYR_BASE/samples/hello_world
mkdir build && cd build

# On Windows
cd %ZEPHYR_BASE%\samples\hello_world
mkdir build & cd build


# Use cmake to configure a Ninja-based build system:
cmake -GNinja -DBOARD=mimxrt1020_evk ..

# Now run ninja on the generated build system:
ninja debug