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LTE-enabled IoT Gateway Runs Linux on i.MX8M Mini

Written by Eric Brown

Eurotech announced a “ReliaGate 10-14” DIN-rail gateway that runs Linux and its ESF IoT stack on an i.MX8M Mini with 2x GbE, DP, isolated serial and DIO, WiFi/BT, optional LTE, and security features including anti-tamper.

The ReliaGate 10-14 “multi-service IoT edge gateway” is a follow-on to Eurotech’s ReliaGate 10-12 and earlier ReliaGate 10-11 gateways, both of which are powered by a Texas Instruments’ Cortex-A8 based Sitara AM3352 SoC. The 10-14 model is a much more substantial upgrade, starting with its more powerful, quad-core, Cortex-A53 i.MX8M Mini SoC. We have covererd plenty of modules and SBCs based on NXP’s Mini, but this is the first Mini-based embedded system we’ve seen.

ReliaGate 10-14 and i.MX8M Mini block diagram
(click images to enlarge)

Like the earlier ReliaGate systems, the ReliaGate 10-14 runs Eurotech Everyware Linux with a Yocto-based SDK with Eclipse tooling and Azul Java support. It also features Eurotech’s Everyware Software Framework (ESF), which was one of the early device-to-cloud IoT aggregation frameworks. This Java/OSGi based-middleware stack offers remote management and supports numerous fieldbus interfaces including Modbus, S7, and OPC UA.

Due to ship in Q2, 2020, the 107 x 85 x 46mm system is smaller than the earlier, 140 x 95 x 45mm ReliaGate models. It also adds more memory and storage, hardware security features, DIN-rail and GbE support, and a display interface, among other features.

Like the previous models, the 10/14 model offers IP40 protection against ingress and supports -20 to 70°C operation. It’s compatible with two expansion modules available with the earlier gateways: the ReliaIO 1012 I/O module and the ReliaLORA 1012 LoRa gateway.

The ReliaGate 10-14 incorporates the quad-core version of NXP’s 14nm-fabricated i.MX8M Mini, which is faster and more power-efficient than the quad -A53 i.MX8M. The Mini offers a 3D GPU but tops out at HD instead of 4K resolution.

The system is available with 2GB to 4GB LPDDR4, 16GB to 64GB eMMC 5.1, and a microSD slot for additional storage. There are 2x GbE ports, 2x noise and surge-protected USB 2.0 ports, a serial console, and a DisplayPort.

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Isolated I/O includes 2x protected RS-232/RS422/RS-485 ports and 2x 12-bit analog inputs. Opto-isolated interfaces include 4x digital inputs and 2x digital outputs. The optional ReliaIO 1012 I/O module adds 4x isolated digital inputs, 4x isolated digital outputs, and 4x protected analog inputs.

 
Wireless and security features

The system provides a dual-band 802.11a/b/g/n/ac radio with Bluetooth 5.0 LE. There’s also an option for LTE Cat 1 cellular service available in pre-certified North America, European, and AP versions. (The latter appears to refer to an LTE access point model.) The LTE modules support 2G/3G fallback service.

Additional wireless features include dual user-accessible mini-SIM slots and up to 4x external antennas. There’s also an optional GNSS (GPS) module with antenna. The optional ReliaLORA 1012 LoRa gateway supports European 868MHz (863-870MHz) and North American 915MHz (902-928MHz) bands with ISM band scan enhancements.

The ReliaGate 10-14 features dual hardware anti-tampering switches and TPM 2.0 security. There’s also an optional professional service that provides an IEC 62443-4-1/-4-2 security assessment.

The system has a 9-30 VDC input with transient protection with 12V or 24V nominal configurations and consumes 5W under typical loads. In addition: “An input power monitoring technology will allow to check regular operative conditions and detect operation anomalies, facilitating preemptive maintenance and further enhancing the device security,” says Eurotech.

The ReliaGate 10-14 is further equipped with a watchdog, accelerometer, temperature sensor, reset and programmable buttons, and an RTC with SuperCAP backup. You also get 6x LEDs, including 4x user LEDs. DIN-rail and all mounting are available, as well as humidity resistance and EN 62368 and UL 60950 safety compliance.

 
Further information

The ReliaGATE 10-14 will be available in Q2 2020 at an undisclosed price. More information may be found in Eurotech’s announcement and product page.
 

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This article originally appeared on LinuxGizmos.com on October 30, 2019.

Eurotech | www.eurotech.com


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Eric Brown, Editor — Eric is a long-time observer of the embedded Linux and Android market. He’s a frequent contributor to Linux.com and MIT Technology Insider. At LinuxDevices.com, he was Chief Writer from 2007 to 2009 and Editor from 2009 to 2012. Other former positions included executive staff positions at PC World and NewMedia Magazines.

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LTE-enabled IoT Gateway Runs Linux on i.MX8M Mini

by Eric Brown time to read: 3 min