DEBIX BPC-iMX8MP-03 User manual

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BPC-iMX8MP-03 Industrial
Computer User Guide
Version: V1.0(2023-03)
Complied by: Polyhex Technology Company Limited（http://www.polyhex.net/）
BPC-iMX8MP-03 Industrial Computer is a ruggedized and protected computer. It is composed
of a DEBIX SOM A (core board), a DEBIX SOM A I/O board (carrier board) and a steel and
aluminum enclosure. It combines various types of harsh environment resistance features,
including ruggedness, dustproof, anti-vibration, shock resistance, wide temperature,
portability and other indicators.
Figure 1

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REVISION HISTORY
Rev.
Date
Description
1.0
2023.03.17
First edition

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INDEX
Chapter 1 Security......................................................................................................................5
1.1. Safety Precaution ........................................................................................................ 5
1.2. Safety Instruction.........................................................................................................5
1.3. Technical Support........................................................................................................6
Chapter 2 BPC-iMX8MP-03 Industrial Computer Introduction..................................................8
2.1. Overview of Industrial Computer.................................................................................9
2.2. Composition of Industrial Computer..........................................................................12
2.3. External Interface of Industrial Computer................................................................. 13
2.3.1. Power Interface.............................................................................................. 13
2.3.2. HDMI Interface............................................................................................... 14
2.3.3. Audio Interface............................................................................................... 14
2.3.4. Ethernet Interface...........................................................................................15
2.3.5. USB Interface................................................................................................. 16
2.3.6. RS485/RS232/CAN Interface........................................................................ 17
2.3.7. GPIO Interface............................................................................................... 19
2.3.8. LED & Key ......................................................................................................20
2.4. Package List..............................................................................................................21
Chapter 3 Installation Guide.....................................................................................................22
3.1. Installation................................................................................................................. 22
3.2. Power on....................................................................................................................23
Chapter 4 Software Application Examples ...............................................................................24
4.1. Use of Ethernet..........................................................................................................24
4.2. Use of WiFi................................................................................................................26
4.3. Use of Bluetooth........................................................................................................28
4.4. Use of USB................................................................................................................30
4.5. Verification of RS485/RS232/CAN............................................................................32
4.5.1. RS485 (Default)..............................................................................................33

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4.5.2. RS232.............................................................................................................34
4.5.3. CAN................................................................................................................ 36
4.6. Verification of DI/DO ..................................................................................................38
4.6.1. DI.................................................................................................................... 38
4.6.2. DO.................................................................................................................. 39
4.7. Verification of LED & Key ..........................................................................................39
4.8. Verification of RTC.....................................................................................................40

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Chapter 1 Security
1.1. Safety Precaution
This document inform how to make each cable connection. In most cases, you will simply
need to connect a standard cable.
Table 1 Terms and conventions
Symbol
Meaning
Always disconnect the power cord from the chassis whenever there is no
workload required on it. Do not connect the power cable while the power is on.
A sudden rush of power can damage sensitive electronic components. Only
experienced electricians should open the chassis.
Always ground yourself to remove any static electric charge before touching
BPC-iMX8MP-03 product. Modern electronic devices are very sensitive to
electric charges. Use a grounding wrist strap at all times. Place all electronic
components on a static-dissipative surface or in a static-shielded bag.
1.2. Safety Instruction
To avoid malfunction or damage to this product please observe the following:
1．Disconnect the device from the DC power supply before cleaning. Use a damp cloth. Do
not use liquid detergents or spray-on detergents.
2．Keep the device away from moisture.
3．During installation, set the device down on a reliable surface. Drops and bumps will lead to
damage.
4．Before connecting the power supply, ensure that the voltage is in the required range, and
the way of wiring is correct.
5．Carefully put the power cable in place to avoid stepping on it.
6．If the device is not used for a long time, power it off to avoid damage caused by sudden

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overvoltage.
7．Do not pour liquid into the venting holes of the enclosure, as this could cause fire or
electric shock.
8．For safety reasons, the device can only be disassembled by professional personnel.
9．If one of the following situations occur, get the equipment checked by service personnel:
The power cord or plug is damaged.
Liquid has penetrated into the equipment.
The equipment has been exposed to moisture.
The equipment does not work well, or you cannot get it to work according to the
user's manual.
The equipment has been dropped and damaged.
The equipment has obvious signs of breakage.
10．Do not place the device in a place where the ambient temperature is below -20°C (-4°F)
or above 70°C (158°F). This will damage the machine. It needs to be kept in an environment
at controlled temperature.
11．Due to the sensitive nature of the equipment, it must be stored in a restricted access
location, only accessible by qualified engineer.
DISCLAIMER: Polyhex disclaims all responsibility for the accuracy of any statement of this
instructional document.
1.3. Technical Support
1. Visit DEBIX website https://www.debix.io/ where you can find the latest information about
the product.
2. Contact your distributor, sales representative or Polyhex’s customer service center for
technical support if you need additional assistance. Please have the following info ready
before you call:

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Product name and memory size
Description of your peripheral attachments
Description of your software(operating system, version, application software, etc.)
A complete description of the problem
The exact wording of any error messages
Discord Community (recommended): https://discord.com/invite/adaHHaDkH2
Email: [e-mail]

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Chapter 2 BPC-iMX8MP-03 Industrial
Computer Introduction
BPC-iMX8MP-03 Industrial Computer is a compact and secure computer, which designed for
industrial applications and can be widely used in machine vision and machine learning,
advanced multimedia, smart cities, edge computing and other solutions that require high
reliability.
Main features:
Stainless steel and aluminum enclosure with MTBF>50,000 hours
It encompasses a DEBIX SOM A and DEBIX SOM A I/O Board
Support boot from eMCC, Micro SD card and SPI NOR Flash
Support dual Gigabit Ethernet, 2.4GHz & 5GHz dual-band Wi-Fi, Bluetooth 5.0 and a Mini
PCIe 4G module/LoRa module/network card
Support 4 x USB 3.0, 2 x USB 2.0, physically isolated interfaces: 4 x RS232, 2 x
RS485/RS232/CAN, 4 x DI, 4 x DO
Support for Ubuntu, Android, Yocto, Windows 10 IoT

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2.1. Overview of Industrial Computer
Figure 2
Figure 3
BPC-iMX8MP-03 Industrial Computer uses DEBIX SOM A and DEBIX SOM A I/O Board
connection as the main board, which supports dual Gigabit Ethernet, three boot modes, shock
and vibration resistance, etc.. The data specifications are as follows.

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Table 2 BPC-iMX8MP-03 Industrial Computer specification
System
Main Board
DEBIX SOM A + DEBIX SOM A I/O Board
Type
BPC-iMX8MP-03
Boot Mode
1) Support DEBIX SOM A board eMCC boot (default)
2) Support DEBIX SOM A I/O Board Micro SD card boot
3) Support DEBIX SOM A I/O Board SPI Nor Flash boot (reserved)
OS
Ubuntu 20.04, Android 11, Yocto-L5.10.72_2.2.0, Windows 10 IoT
Enterprise
Memory
2GB LPDDR4 (1GB/4GB/8GB optional)
Storage
Onboard 16GB eMMC (8GB/32GB/64GB/128GB/256GB optional)
Communication
Ethernet
2 x Independent MAC RJ45 Gigabit Ethernet ports, both support
POE power supply (need to be equipped with POE power supply
module)
Wi-Fi & Bluetooth
2.4GHz & 5GHz dual-band Wi-Fi, Bluetooth 5.0, external Wi-Fi and
4G SMA antenna interface
Video & Audio
HDMI
1 x HDMI output, connector is Type A HDMI female
Audio
1 x headphone output and microphone input combo interface, the
connector is a 3.5mm socket
External I/O Interface
DC Block
1 x DC socket, supports 5.5mm x 2.1mm plug
USB 3.0
4 x USB 3.0 Host, the connector is double layer Type-A interface
USB 2.0
3 x USB 2.0 Host, the connector is Type-A interface
Serial Ports
1) 4 x physically isolated RS232, compatible with UART TTL 3.3V
without physical isolation

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2) 4 x physically isolated RS485/RS232/CAN (RS485 by default),
compatible with UART TTL 3.3V without physical isolation
GPIO
1) 4 x physically isolated DIs, supporting wet and dry nodes
2) 4 x physically isolated DOs, support wet nodes, compatible with
external relay dry nodes
LED & Key
1) 1 x System status indicator
2) 1 x Power status indicator
3) 1 x ON/OFF key
Internal I/O Interface
Slot
1) 1 x Micro SIM pop-up card slot
2) 1 x Micro SD pop-up card slot
Mini PCIe
1) Support Mini PCIe 4G module, such as Quectel 4G module,
built-in SIM card
2) Support Mini PCIe LoRa module
3) Support Mini PCIe expansion modules, such as network card,
SATA card, serial port card
Power Supply
Power Input
Default DC 12V power input, support DC 12V~36V wide voltage input
Mechanical & Environmental
Enclosure Material
Steel and aluminum alloy
Size (L x W x H)
124mm x 169.42mm x 38.9mm
Gross Weight
812g
Heat Dissipation
No fan, heat dissipation through the enclosure
CPU Temperature
-20 °C to 70 °C
Relative Humidity
10%~90%

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2.2. Composition of Industrial Computer
Figure 4
BPC-iMX8MP-03 Industrial Computer assembly consists of these main components: DEBIX
SOM A + I/O Board, enclosure and antenna.
Figure 5 DEBIX SOM A + I/O Board

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Figure 6 Enclosure and antenna
2.3. External Interface of Industrial Computer
2.3.1. Power Interface
BPC-iMX8MP-03 Industrial Computer provides one power connector (DC socket), with default
DC 12V power input. As shown in the figure below.
Figure 7 DC-IN

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2.3.2. HDMI Interface
BPC-iMX8MP-03 Industrial Computer provides an HDMI interface, and the connector is an
A-type HDMI female socket, which is used to connect a monitor, TV or projector. As shown in
the Figure 8.
HDMI resolution up to 3840x2160p30. Audio supports 32 channel audio output and supports 1
S/PDIF audio eARC input.
Figure 8 HDMI
2.3.3. Audio Interface
BPC-iMX8MP-03 Industrial Computer provides a combined headphone and microphone input
interface. The connector is a 3.5mm socket, compatible with the built-in needle socket design,
has audio input/output functions, and supports rated voltage 1.5V MIC audio input. As shown
in the Figure 9.
HDMI

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Figure 9 Audio
2.3.4. Ethernet Interface
BPC-iMX8MP-03 Industrial Computer supports two independent MAC RJ45 Gigabit Ethernet
ports (Network port 1: LAN1, Network port 2: LAN2), both support POE power supply
(Additional POE module is required), connect device to network through the network cable of
RJ45 connector; and a set of status indicators below the interface to display the status signal,
one is Link and the other is Active.
Figure 10 Ethernet
Link
Active
Link
Active

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Table 3 Description of RJ45 Port Status Indicator
LED
Color
Description
Link
Green
Light, the network cable is plugged in, network connection status is good
Active
Yellow
Blinking, network data is being transmitted
2.3.5. USB Interface
BPC-iMX8MP-03 Industrial Computer has two USB controllers and PHY, supports USB 3.0
and 2.0. There are four USB 3.0 interfaces with dual-layer Type-A connectors and another two
USB 2.0 interfaces with Type-A connectors. As shown in the figure below.
Figure 11 USB 3.0
Figure 12 USB 2.0
USB 3.0
USB 2.0

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2.3.6. RS485/RS232/CAN Interface
IMPORTANT
The default configuration is an RS485 interface. RS485, RS232, and CAN on the same
connector, only one can be used at the same time. If RS232 or CAN function is required,
internal hardware wiring needs to be adjusted before leaving the factory.
BPC-iMX8MP-03 Industrial Computer provides two types of serial connectors:
Supports 2 x RS485/RS232/CAN interface, compatible with the UART TTL 3.3V serial
port without physical isolation.
Supports 4 x RS232 interfaces, compatible with UART TTL 3.3V serial ports without
physical isolation.
Figure 13 RS485/RS232/CAN
The 2 x RS485/RS232/CAN pin sequence is as shown in the figure:
Figure 14
The 2 x RS485/RS232/CAN interface is defined as follows:
2 x RS485/RS232/CAN
4 x RS232

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Table 4 Pin definition of RS485/RS232/CAN
Pins
Definition
Description
Device node
1
RS485_A1/RS232_TXD1
/CAN1_H
RS485 differential signal line A/ RS232 sender/ CAN1
differential signal line H
/dev/ttyWCH0
2
RS485_B1/RS232_RXD1
/CAN1_L
RS485 differential signal line B/ RS232 receiver/
CAN1 differential signal line L
3
GND
To ground
4
RS485_A2/RS232_TXD2
/CAN2_H
RS485 differential signal line A/ RS232 sender/ CAN2
differential signal line H
/dev/ttyWCH1
5
RS485_B2/RS232_RXD2
/CAN2_L
RS485 differential signal line B/ RS232 receiver/
CAN2 differential signal line L
6
GND
To ground
The 4 x RS232 pin sequence is as shown in the figure:
Figure 15
Table 5 Device node of COM
Function Name
IO Name
Description
Device node
COM1
RS232_RXD1
RS232 receiver
/dev/ttymxc3
RS232_TXD1
RS232 sender
COM2
RS232_RXD2
RS232 receiver
/dev/ttymxc2
RS232_TXD2
RS232 sender
COM3
RS232_RXD3
RS232 receiver
/dev/ttyWCH3
RS232_TXD3
RS232 sender

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COM4
RS232_RXD4
RS232 receiver
/dev/ttyWCH2
RS232_TXD4
RS232 sender
The 4 x RS232 interface is defined as follows:
Table 6 Pin definition of COM
Pins
Definition
Pins
Definition
1
NC
2
RS232_RXD
3
RS232_TXD
4
NC
5
GND
6
NC
7
NC
8
NC
9
NC
2.3.7. GPIO Interface
BPC-iMX8MP-03 Industrial Computer provides a GPIO interface with isolated type (from left
to right, DI interface, DO interface), physically isolated DI, supports dry node input and wet
node input; physically isolated DO, supports wet node, and is compatible with external relay
dry nodes.
Figure 16 GPIO
The GPIO interface is defined as follows:
GPIO

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Table 7 Pin definition of GPIO
Pins
Definition
Pins
Definition
V
DO_PCOM
0
DI_1
1
DI_2
2
DI_3
3
DI_4
4
DO_1
5
DO_2
6
DO_3
7
DO_4
G
GND
DI electrical parameters:
Wet contact:
When the signal input voltage is 0~3V DC, the corresponding SOM A signal is low
level;
When the signal input voltage is 5~30V DC, the corresponding SOM A signal is high
level.
Dry contact:
Open state: high level
Short state with GND: low level
DO electrical parameters:
Node DO-PCOM supports a voltage range of 5~30V DC;
When the SOM A signal is low, the corresponding DO signal output voltage follows the
node DO-PCOM, the higher the node DO-PCOM voltage, the higher the DO signal output
voltage (compared with the node DO-PCOM, there is a 1~3V voltage drop);
When the SOM A signal is high level, the corresponding DO signal output voltage is 0.
2.3.8. LED & Key
There are two LED indicators and a power ON/OFF key, as shown in the figure below.