STMP157-SOM-512-IND industrial grade system on module status update April 2021

STMP157-SOM-512 is functional drop in replacement for A13-SOM-512 and have exactly the same features, but is industrial grade -40+85C.

All connectors have same signals on the both boards:

For STMP157-SOM-512 we made special STMP1(A13)-SOM-EVB:

With this board all SOM features can be explored:

• two USB High Speed Hosts
• one USB-OTG
• WiFi/BT module with PCB antenna and option for external antenna
• 100MB Ethernet
• Flash connector for attaching SPI, NAND, eMMC Flash modules
• Audio input, output
• UEXT connector
• LCD connector for LCD-OLinuXino-XX
• GPIO connector

Needless to say the EVB works with A13-SOM-512 also.

Mainline uboot and Linux Kernal 5.12 with support for all peripherals is available.

STMP157-SOM-512 and STMP1(A13)SOM-EVB boards are now in production and will be on the web for sale by the end of April.

STMP157-OLinuXino-LIME2-IND status update April 2021

The last issues with STM32MP1 mainline Linux kernel support were resolved and now we run STMP157-OLinuXino-LIME2 in production!

Revision B fixes all hardware issues in the initial prototype. STMP157-OLINUXINO-LIME2 is complete analog of A20-OLinuXino-LIME2 which is one of our best selling Allwinner board.

Mainline uboot and Linux kernel 5.12 images are available with all periperials working.

We will have STMP157-OLINUXINO-LIME2 on our web for sale by the end of April.

This is also our first board with Ethernet supporting Precise Time Protocol and Time Sensitive Networking implemented.

IEEE 1588 Precision Time Protocol (PTP) is implemented for the industrial grade Open Source Hardware Linux computer STMP1-OLinuXino-LIME2

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The Time Sensitive Networking (TSN) is for real-time communication with hard, non-negotiable time boundaries for end-to-end transmission latencies.

The main use of TSN is for industrial machine controllers, robots etc.

For this purpose all devices in this network need to have a common time reference and therefore, need to synchronize their clocks among each other. Only through synchronized clocks, it is possible for all network devices to operate in unison and execute the required operation at exactly the required point in time.

The time in TSN networks is usually distributed from one central time source directly through the network itself using the IEEE 1588 Precision Time Protocol, which utilizes Ethernet frames to distribute time synchronization information.

Linutronix helped to implement IEEE 1588 PTP on STMP1-OLinuXino-LIME2.

For Uboot changes Olimex Uboot was used as base. The Kernel patch is sent upstream and can be seen on the mailing list

https://lore.kernel.org/linux-devicetree/20210316080644.19809-1-kurt@linutronix.de/

We also apply these patches in our next STMP1 Linux images release.

The results is correctly working PTP:

# ptp4l -H -2 -i eth0 --tx_timestamp_timeout=40 -f /etc/gPTP.cfg -m
|ptp4l[1434.665]: rms    5 max   13 freq  -1069 +/-   7 delay   325 +/-   0
|ptp4l[1435.666]: rms    8 max   16 freq  -1068 +/-  11 delay   325 +/-   0
|ptp4l[1436.667]: rms   10 max   19 freq  -1060 +/-  12 delay   324 +/-   0
|ptp4l[1437.668]: rms    8 max   17 freq  -1055 +/-  10 delay   322 +/-   0
|ptp4l[1438.668]: rms    6 max    9 freq  -1057 +/-   9 delay   322 +/-   0

Open Source Hardware S3-OLinuXino update – The new board targeting industrial vision applications is now with mainline Linux support

S3-OLinuXino is board we create to may add vision to the PTH components Soldering Robot we are working on for some time.

Revision.B now is a bit different than the first prototype we made. It has these features:

• S3 SOC Cortex-A7 running at 1.2Ghz
• 1Gb DDR3 RAM inside S3 SOC up to 1333Mhz
• MIPI Raspberry Pi camera interface up to 8Mpix camera support
• Parallel CSI camera interface up to 8 Mpix
• Power Management Unit with LiPo battery charger and step-up to allow stand alone battery operation
• 100Mb Ethernet interface with POE support (external optional module)
• SPI, NAND, eMMC external optional module
• LCD connector to connect to LCD-OLinuXino displays with different sizes and resolutions
• LiPo battery connector
• USB-OTG interface
• UEXT connector with SPI, I2C, Serial and power supply
• EXT1 connector for LED PWM lighting
• audio input with microphone
• audio output
• WiFi and BT module with external antenna
• micro SD card connector

We are working to offer Mainline Linux with this board.
Bootlin got sample board and have working MIPI driver.

S3-OLinuXino can take power from USB, LiPo battery or PoE (with optional PoE module).

Different NAND Flash, SPI Flash, eMMC flash options are possible with addon module

The only thing we still didn’t complete is USB-OTG functionality.

Mass production is planned for March 2021.

Implementation of OPC UA on ESP32-EVB

OPC Unified Architecture (OPC UA) is an open, implemented under GPL 2.0 license, machine to machine communication protocol for industrial automation developed by the OPC Foundation.

The OPC UA protocol specification consists of 14 documents for a total of 1250 pages. Due to this complexity, existing implementations are usually incomplete.

This is why we were puzzled to see on Twitter post by Selftronics that they made OPC UA server running on ESP32-EVB!

Here are the details of the implementation, the sources are at GitHub.

Fruit selection machine made with T2-OLinuXino-LIME2 and MOD-IO, runs OpenCV

As part of the OSIE project Nexedi SA, France built a small conveyor belt using entirely open-source products and technologies.

Their goal was to build a fruit selection machine, which would use AI (starting with OpenCV) to inspect fruits (and possibly many other small particles) and to do a physical separation (selection) of them.

Olimex have been chosen as a partner in the project because of the many of OSHW solutions which the company offers.

T2-OLinuXino-LIME2 and MOD-IO were used in the implementation.

Details for the project is available here.

New OSHW board with STM32F303 now can have CAN and USB working at same time, operates from -40+85C and with power supply from 4.2-40VDC

OLIMEXINO-STM32F3 is re-design of our popular OLIMEXINO-STM32 board.

What is new?

• STM32F303RCT6TR is used which allow CAN and USB to work at the same time. The F1 Series of STM32 shared same buffer for both USB and CAN which leads to not be able to work with both CAN and USB at the same time. This is solved in F3 series
• Increased amount of memory: 256KB Flash, 40KB RAM
• Power supply is now from 4.2VDC up to 40VDC which allow OLIMEXINO-STM32F3 to work in Automotive applications without special power converters
• Industrial temperature grade -40+85C
• Real Time Clock backup battery holder for CR2032 Li battery
• Lower cost

The price of OLIMEXINO-STM32F3 is EUR 14.95 for single unit and drops to EUR 11.96 for 50+ pcs order.

The work on our most complex Open Source Hardware Linux board started – meet the Tukhla iMX8QuadMax SOC based board to be designed with KiCAD

We started working on our most complex OSHW board with KiCAD.

iMX8 is broad range of very different ARM architectures under same name which some people may find quite confusing.
Here is the table chart:

You can see by yourself:

• iMX8X is quite humble with up to x4 Cortex-A35+Cortex-M4F cores, something less capable than Allwinner A13 or STM32MP1XX
• iMX8M, Nano/Mini/Plus is x4 Cortex-A53 + Cortex-A7/M4F something in the range of power of Allwinner A64
• finally iMX8QuadMax comes with different configurations, but the high end is Octa-core with x2 Cortex-A72 + x4 Cortex-A53 + x2 Cortex-M4F and is more powerful than the popular Rockchip RK3399

Why we did started working on such monster?

Company from EU which values the OSHW recognized the absence of high end open source Linux board and asked us to design one. They offered to cover all associated design costs. They specially requested this to be not yet another RK3399 board, but based on SOC with proper documentation and software support. NXP’s high end iMX8QuadMax matched their requirements perfectly.

Currently all powerful Cortex-A72 comes from Chinese or Korean origin and are always closed projects, the only published info in best case is PDF schematic which can’t be verified i.e. the final product may or may not match what they publish. The popular Raspberry Pi go even further and their “schemaitcs” are just connector diagrams.

This is how the Tukhla project was born, it will have:

• MIMX8QM5AVUFFAB Octa-core SOC with: ( x2 Cortex-A72, x4 Cortex-A53, x2 Cortex-M4F, x4 GPUs with 16 Vec4-Shader GPU, 32 compute units OpenGL® ES 3.2 and Vulkan® support Tessellation and Geometry Shading, Split-GPU architecture enables 2x 8 Shader Cores, 4k h.265 Decode, 1080p h.264 encode)
• x2 LPDDR4 x32 databus RAM memory with up to 16GB of RAM configuration
• PMU taking all power lines from single 12V/4A source
• micro SD card
• eMMC Flash with differnt sizes
• QSPI Flash
• x1 SATA for external HDD/SSD drives
• x2 single lane PCIe with M2 connectors for NVMe
• HDMI input 1.4 RX with HDCP 2.2
• HDMI output 2.0 TX with HDCP 2.2 4K
• USB 2.0 OTG
• USB 3.0 HOST
• x2 Gigabit Ethernet
• x2 MIPI CSI camera connectors

The price of MIMX8QM5AVUFFAB alone is around EUR 100 in small quantities and currently LPDDR4 4GB cost EUR 35, LPDDR4 8GB cost EUR 50, LPDDR4 16GB cost EUR 180.

So with BOM over EUR 200 this board will not be affordable for the most of Raspberry Pi $35 price range users.

This board targets professionals, who need high performance board and being not dependent by Chinese SOC vendors. With all hardware open, which gives them security for their business as the design is public.

iMX8QuadMax SOC is available in automotive AEC-Q100 Grade 3 (-40° to 125° C Tj), Industrial (-40° to 105° C Tj), Consumer (-20° to 105° C Tj)

Some of the features like HDMI input are not present in the Chinese SOCs at all.

iMX8QuadMax may have DSP and incorporate Vision and Speech Recognition interactivity via a powerful vision pipeline and audio processing subsystem.

The Software support include: Android™, Linux®, FreeRTOS, QNX™, Green Hills®, Dornerworks XEN™.

iMX8QuadMax is fully supported on NXP’s 10 and 15-year Longevity Program

Tukhla means Brick in Bulgarian (and other Slavish languages) and it will be the OSHW building block for whole range of different solutions.

How long it will take to finish this design?

We honestly don’t know. It took more than month just to capture the schematic in the state it is now:

imx8qm-tukhla-somDownload

There is long path now to create and verify all component packages (just the SOC is in 1313 BGA ball package), verify the schematic signals, place the components on the PCB, route high speed signals manually.

It may be 6 months or more. We got unofficial info that NXP engineers spent more than year to make the NXP iMX8QMax demo board.

Allwinner keep their promise for long term supply of T2 (industrial A20) SOC. If you wonder how 60K of Allwinner T2 SOC looks like you can see now

T2 is the industrial version of A20 – the most successful SOC in Allwinner history. It keeps selling for more than 8 years now and demand is steady.

We are proud that our OSHW designs with A20 are part of this success story.

T2 can work in extended temperature grade and is more expensive than A20, so the demand is not so big and used just by specific customers like in automotive and industrial equipment. During the last COVID-19 economy slow down these customers decreased and Allwinner stock of T2 was sold out. While NXP, ST etc always keep some kind of guarantee that they will produce this processor for XX years, Chinese companies are practical, they sell as long as it’s profitable for them and if demand is low they just stop.

This is why many people are afraid to place Chinese SOC in their products, they are afraid that this chip may stop being produced at some point of time and their design need to be changed.

Fortunately for Olimex our sales are big enough to be interesting and supported by Allwinner. We have enough business to place custom orders even for chips which are now with status “obsolete” and Allwinner keep producing them for us.

T2 automotive/industrial market for Allwinner now is not big enough for them to justify keeping it in stock, but Olimex placed order for these in January and 60Kpcs hit our warehouse few weeks ago.

The label show these T2 SOC are manufactured 18 of May 2020 🙂

So Allwinner keeps their part of the deal for long term delivery and manufacture for us even SOCs which are not available for sale officially, this means we can keep producing our boards with Allwinner SOC for our customers and they are safe with us.

Open Source Hardware Linux board with industrial grade -40+125C temperature STMP1-OLinuXino-Lime2 prototype is live

We have progress on this board software. It now boots, we have been fighting the hardware and of course the issue was RTFM in this case RTFE (Errata) where STM well documented thar this chip requires oscillator and will not work with only crystal. We were misleaded by their kit schematic where they made provisions for both crystal and osciallator and being cheap we first bet on the crystal 🙂 .

Anyway after replacing the crystal with oscillator STMP1-OLinuXino-Lime2 got alive and here is the boot log: https://pastebin.com/ev94Jbk0

Our design is quite different from STM demo kit, we use different PMU, PHY HDMI so many things have to be done on the Linux support, but the results so far are very good.