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Yocto-on-i.MX6UL gateway serves up I2C and SPI on a DB9 port

Jan 16, 2018 — by Eric Brown — 536 views

Axiomtek’s compact “IFB125” DIN-rail IoT gateway runs Yocto Linux on an i.MX6 UL SoC with dual LANs, mini-PCIe expansion, extended temperature and vibration resistance, COM and USB ports, and a DB9 port that supports both SPI and I2C.

Axiomtek has released a minor variation on its IFB122 IoT gateway. Like the IDB122, the new IFB125 runs Yocto Project code with Linux 3.14.52 on NXP’s 528MHz Cortex-A7 based i.MX6 UltraLight (UL) SoC. The headless gateway is designed for remote control and remote monitoring management applications such as unmanned control room, industrial automation, automatic parking lot, and traffic cabinets.



IFB125, front and back
(click images to enlarge)

The main difference provided by the new IFB125 is a switch from the previous second RS-232/422/485 port to a similarly DB9-based port that provides both SPI and I2C interfaces. In addition, the system supports up to 8GB eMMC, double that of the IFB122, and can withstand vibration at up to 5G @ 5-500MHz, up from 2G on the IFB122.

Otherwise, the fanless, 125 x 100 x 31mm systems appear to be identical. The 0.3 Kilogram IFB125 provides IP40 ingress protection and -40°C to 70°C support, as well as a 9V to 48V DC input with lockable terminal block connector. DIN-rail and wall-mounting are available.



IFB125 front (left) and bottom/top detail views
(click images to enlarge)

The IFB125 is equipped with 256MB DDR3 RAM, as well as 2x 10/100Mbps Ethernet ports, and single RS-232/422/485 and USB 2.0 ports. A DIO and console interface offers 2x in and 1x out.

A mini-PCIe and SIM slot support WiFi or 3G/4G wireless cards, and a pair of external antennas are included. Other features include a relay, a watchdog, and 6x LEDs, including 4x user-assignable lights.

 
Further information

The IFB125 is “coming soon” at an undisclosed price. More information may be found at Axiomtek’s IFB125 product page.
 

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