NXP MIMXRT1040-EVK

Overview

i.MX RT1040 crossover MCUs add additional flexibility with new packages and an extended temperature range up to 125° C. The i.MX RT1040 MCU has a compact 9x9 mm package, as well as the 11x11 mm package that supports implementing a 2-layer PCB design. The i.MX RT1040 MCUs run on the Arm® Cortex®-M7 core at 600 MHz.

MIMXRT1040-EVK

Hardware

  • MIMXRT1042XJM5B MCU (600 MHz, 512 KB TCM)

  • Memory

    • 256 MBit SDRAM (Winbond W9825G6KH)

    • 64 Mbit QSPI Flash (Winbond W25Q64JVSSIQ)

  • Display

    • LCD connector

    • Touch connector

  • Ethernet

    • 10/100 Mbit/s Ethernet PHY

  • USB

    • USB 2.0 OTG connector

  • Audio

    • 3.5 mm audio stereo headphone jack

    • Board-mounted microphone

  • Power

    • 5 V DC jack

  • Debug

    • JTAG 20-pin connector

    • OpenSDA with DAPLink

  • Expansion port

    • Arduino interface

  • CAN bus connector

For more information about the MIMXRT1040 SoC and MIMXRT1040-EVK board, see these references:

External Memory

This platform has the following external memories:

Device

Controller

Status

W9825G6KH

SEMC

Enabled via device configuration data block, which sets up SEMC at boot time

W25Q64JVSSIQ

FLEXSPI

Enabled via flash configurationn block, which sets up FLEXSPI at boot time. Supported for XIP only.

Supported Features

The mimxrt1040_evk board configuration supports the hardware features listed below. For additional features not yet supported, please also refer to the NXP MIMXRT1064-EVK , which is the superset board in NXP’s i.MX RT10xx family. NXP prioritizes enabling the superset board with NXP’s Full Platform Support for Zephyr. Therefore, the mimxrt1064_evk board may have additional features already supported, which can also be re-used on this mimxrt1040_evk board:

Interface

Controller

Driver/Component

NVIC

on-chip

nested vector interrupt controller

SYSTICK

on-chip

systick

GPIO

on-chip

gpio

UART

on-chip

serial port-polling; serial port-interrupt

PWM

on-chip

pwm

ADC

on-chip

adc

SPI

on-chip

spi

DMA

on-chip

dma

I2C

on-chip

i2c

The default configuration can be found in boards/nxp/mimxrt1040_evk/mimxrt1040_evk_defconfig

Other hardware features are not currently supported by the port.

Connections and IOs

The MIMXRT1040 SoC has five pairs of pinmux/gpio controllers.

Name

Function

Usage

GPIO_AD_B0_12

LPUART1_TX

UART Console

GPIO_AD_B0_13

LPUART1_RX

UART Console

WAKEUP

GPIO

SW0

GPIO_AD_B0_08

GPIO

User LD1

GPIO_AD_B0_10

FLEXPWM1 PWM3A

PWM Output

GPIO_AD_B0_14

ADC0 IN3

ADC0 Input

GPIO_AD_B0_15

ADC0 IN4

ADC0 Input

GPIO_SD_B0_02

LPSPI1_SDO

SPI Output

GPIO_SD_B0_03

LPSPI1_SDI

SPI Input

GPIO_SD_B0_00

LPSPI1_SCK

SPI Clock

GPIO_SD_B0_00

LPSPI1_SCK

SPI Clock

GPIO_AD_B1_00

LPI2C1_SCL

I2C Clock

GPIO_AD_B1_01

LPI2C1_SDA

I2C Data

Note

In order to use the SPI peripheral on this board, resistors R350, R346, and R360 must be populated with zero ohm resistors.

System Clock

The MIMXRT1040 SoC is configured to use SysTick as the system clock source, running at 600MHz.

When power management is enabled, the 32 KHz low frequency oscillator on the board will be used as a source for the GPT timer to generate a system clock. This clock enables lower power states, at the cost of reduced resolution

Serial Port

The MIMXRT1040 SoC has eight UARTs. LPUART1 is configured for the console, and the remaining UARTs 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

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 J11 and J13 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 J1.

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 mimxrt1040_evk samples/hello_world
west flash

Open a serial terminal, reset the board (press the SW1 button), and you should see the following message in the terminal:

***** Booting Zephyr OS Booting Zephyr OS build v3.3.0-rc3-66 *****
Hello World! mimxrt1040_evk

Debugging

Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b mimxrt1040_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 Booting Zephyr OS build v3.3.0-rc3-66 *****
Hello World! mimxrt1040_evk

Troubleshooting

USER_LED D8

The MIMXRT1040-EVK board ships with the wireless module in the M.2 connector, and with jumper J80 shorted. This causes a conflict with the USER_LED D8, and the LED will not turn off. Samples and applications using USER_LED D8, like blinky, require removal of J80 jumper.

Boot Header

If the debug probe fails to connect with the following error, it’s possible that the boot header in QSPI is invalid or corrupted. The boot header is configured by CONFIG_NXP_IMXRT_BOOT_HEADER.

Remote debugging using :2331
Remote communication error.  Target disconnected.: Connection reset by peer.
"monitor" command not supported by this target.
"monitor" command not supported by this target.
You can't do that when your target is `exec'
(gdb) Could not connect to target.
Please check power, connection and settings.

You can fix it by erasing and reprogramming the QSPI with the following steps:

  1. Set the SW4 DIP switches to OFF-OFF-OFF-ON to boot into the ROM bootloader.

  2. Reset by pressing SW1

  3. Run west debug or west flash again with a known working Zephyr application.

  4. Set the SW4 DIP switches to OFF-OFF-ON-OFF to boot from QSPI.

  5. Reset by pressing SW1

WiFi Module

If the debugger fails to connect with the following error, it’s possible the M.2 WiFi module is interfering with the debug signals

Remote debugging using :2331
Remote communication error.  Target disconnected.: Connection reset by peer.
"monitor" command not supported by this target.
"monitor" command not supported by this target.
You can't do that when your target is `exec'
(gdb) Could not connect to target.
Please check power, connection and settings.

To resolve this, you may remove the M.2 WiFi module from the board when flashing or debugging it, or remove jumper J80.