HummingBoard Pulse & i.MX8M Plus SOM Quick Start Guide


The following quick start guide provides background information about the HummingBoard Pulse.

The guide will give a technical overview about the product and by the end of it you should be able to boot an operating system and begin testing your application.

Revision and Notes

Hardware Setup

Product specifications


HummingBoard Pulse


HummingBoard Pulse

SOM Model

NXP i.MX8M Dual / Quad core Arm Cortex A53 up to 1.5GHz (with Arm M4 GPP)

NXP i.MX8M Mini Single to Quad core Arm Cortex A53 up to 1.8GHz (with Arm M4 GPP)

Memory & Storage

Up to 4GB LPDDR4


2 x RJ45


2 x USB 3.0 *
Mini PCIe
SIM card slot


HDMI 2.0 out **
2 x MIPI-CSI ***
Digital audio (Riser interface FPC connector)

Onboard audio codec


1 x Reset button
1 x Configurable push button
MikroBus click interface
3 x LED indicators

OS Support



Ambient temp.: 0°C to 70°C
Enclosed ambient temp.: 0°C to 40°C
CPU max die: 105°C

Ambient temp.: -40°C to 85°C
Enclosed Ambient temp.: -25°C to 65°C
CPU max die: 105°C

Humidity (non-condensing): 10% – 90%


Board: 102mm x 69mm
Enclosed: 141.5 x 78 x 30mm


7V – 28V wide range
PoE sink support


Optional extruded aluminum (IP32) enclosure


Supported with i.MX8M-PLUS SOM. For more detailed information about our SOM-i.MX8M series please visit this user manual : i.MX8M Plus SOM Hardware User Manual .

Please note

(*) Only USB 2.0 supported with the i.MX8M Mini SoC.
(**) Only supported with the i.MX8M SoC.
(***) Only 1 x MIPI-CSI supported with the i.MX8M Mini SoC.

Block Diagram

The following figure describes the i.MX8M Plus Block Diagram.


Visual features overview

Please see below the features overview of the connector side of the HummingBoard Pulse.

Print side connector overview of the HummingBoard Pulse.

Software Setup

Cable setup and prerequisites

Here is what you will need to power up and use the board:

  • Linux or Windows PC

  • HummingBoard Pulse with SOM

  • 12V Power adapter (HummingBoard Pulse has wide range input of 7V-28V), alternatively you can use a PoE injector to power on the device.

  • Micro USB to USB for console, the HummingBoard Pulse has an onboard FTDI chip.

  • IP router or IP switch

Boot Select

Before powering up the board for the first time it is recommended to select the boot media. In order to configure the boot media, please refer to HummingBoard Pulse and Ripple Boot Select .

Booting from SD card

The following shows how to set the switches on the boot source selector:

Please Note:

The black rectangle represents the switch position.

Once you set the switches, you can apply the following for booting from an SD card.

1. Downloading the Debian image

Download the Debian image by running the following command on your Linux/Windows PC:


2. Writing the image to the SD card

Use the following commands for writing the image to an SD card:

xz -dc sr-imx8-debian-bullseye-20230623-cli-imx8mp-sdhc.img.xz | sudo dd of=/dev/sdX bs=4k conv=fdatasync status=progress

Note: Plug a micro SD into your Linux PC, the following assumes that the micro SD is added as /dev/sdX and all it’s partitions are unmounted.

3. SD card insertion

Please Insert the SD card into your device.

4. Power connection

Connect your power adaptor to the DC jack, and then connect the adaptor to mains supply.

5. Serial Connection

Please insert the micro USB into your device, then you can refer to Serial Connection for installing necessary serial connection software in Linux/Windows.

Once you installed the necessary serial connection software, you should be able to see the following:

  • In order to be able to log in , please insert “debian” as a username and password as follows:

More Features


Connect an Ethernet cable to your HummingBoard Pulse (for internet access during boot-up).
Models HummingBoard with WiFi, can be connected via WiFi or wired Ethernet.

  • Please check you Ethernet connection.

  • Use the following commands in order to keep your system up-to-date:

apt-get update apt-get upgrade reboot

An example for connecting to WiFi using wpa_supplicant:

1. To bring a WiFi interface up, run the following :

ifconfig wlan0 up

To discover your wireless network interface name, see Network Interfaces.

2. Install the wpa_supplicant package:

apt-get install wpasupplicant

3. Edit network interfaces file :

At the bottom of the file, add the following lines to allow wlan as a network connection:

cat <<EOF > /etc/network/interfaces.d/wlan0 allow-hotplug wlan0 iface wlan0 inet dhcp wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf iface default inet dhcp EOF

4. Create a configuration file with the relevant ssid:

cat <<EOF > /etc/wpa_supplicant/wpa_supplicant.conf ctrl_interface=/run/wpa_supplicant update_config=1 network={ ssid="MYSSID" psk="passphrase" } EOF

Check your personal ssids by running : ‘iw dev wlan0 scan’

5. Make sure it works:

Restart your device and it should connect to the wireless network. If it doesn't, repeat above steps or get help from an adult.


1. For showing all Bluetooth devices, run the following:

apt-get install bluez hciconfig -a

2. Choose a device, and turn it on:

hciconfig hci0 up

3. Set up the Bluetooth name:

hciconfig hci0 name 'SolidRun_Ble'

4. Make your Bluetooth detectable by other devices:

hciconfig hci0 piscan

5. If you want to connect to other devices:

  • Start by scanning for other Bluetooth devices:

hcitool scan
  • Choose a MAC address and connect :

rfcomm connect 0 $MAC 10 &
  • You can check the communication between the devices by writing :

l2ping -c 4 $MAC

GPIO Pins Control

In order to be able to control the GPIO pins, please refer to GPIO Pins Control - HummingBoard Pulse/Mate & i.MX8M Plus SOM

Enable the MINI-PCIe slot ‘J20’

To activate the mini-pcie connector you should run the commands bellow (Enable the modem Power & do Rest):

# enable power supply for M.2 and PCIe: "M2_3V3" echo 10 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio10/direction echo 1 > /sys/class/gpio/gpio10/value # pcie reset: "Mini-PCIe_PREST" echo 1 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio1/direction echo 1 > /sys/class/gpio/gpio1/value


Please Note

mPCIe interface doesn't support PCIe interface - it supports USB 3.0 only.

Cellular Modem

The cellular modem is a more fully featured extension of which contains a cellular module with additional hardware interfaces and a SIM card slot.

You can connect your cellular modem to the mPCIe, and insert a SIM card.

Enable the M.2 slot ‘M1’


To activate the M.2 connector you should run the commands bellow (Enable the modem Power & do Rest):

# enable power supply for M.2 and PCIe: "M2_3V3" echo 10 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio10/direction echo 1 > /sys/class/gpio/gpio10/value # M.2 reset: "M.2_PREST" echo 6 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio6/direction echo 1 > /sys/class/gpio/gpio6/value # M.2 GPS Enable: "M.2_GPS_EN" echo 7 > /sys/class/gpio/export echo out > /sys/class/gpio/gpio7/direction echo 1 > /sys/class/gpio/gpio7/value


For testing you serial peripheral interface - SPI, please see this documentation SPI from Linux with spidev.


First, you need to check that the required device is the default one by run:

$ aplay -L

If the sysdefault:CARD doesn’t set to wm8904 like this example

Then you can play sound with choosing the device who set to wm8904 and generate audio, in the above situation the device is hw:CARD=wm8904audio so the test will work as this:

$ speaker-test -D hw:CARD=wm8904audio -t sine -c 2 -f 1000 -l 5
  • NOTE: the “ -c “ flag used to set the number of the channels that you have in your audio output device, in my example I have 2 channels.

If the sysdefault:CARD=wm8904 you can test with this command:

$ speaker-test -t sine -f 1000 -l 5

Basler Camera

For getting started with the Camera Module on your board, please see this documentation Basler Camera Quick Start Guide.


Starting from April 01. 2022, the EEPROMs on Carriers, i.MX8M Plus SoMs are being programmed with identifying information such as the product name and SKUs to allow for programmatic identification of hardware. Check our iMXMP EEPROM documentation for additional information.

List Of Supported OS









Build from source



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