Opener on microcontroller

[Mohammed Al Hunaiti]

Hi guys

I see your stack for ethernet/ip and is so interesting, but i need to implement the Ethernet/IP con a pic microcontroller that have integrated Ethernet controller (PIC32MZ) anyone have experience about it?

Thank you 

[Martin Melik-Merkumians]

Never tried a PIC32MZ, but the product webpage says that it supports FreeRTOS, so this should be possible without big modifications. Have you already tried to just compile it for the platform?

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[Oliver King-Smith]

Has anyone got recommendations for which microcontrollers and OSes are a good fit for opENer?  

I want to run a slave Ethernet/IP device that does some digital and analog IO.  I don't need to update faster than about every 10ms.

Oliver

[Alois Zoitl]

From my experience and the current state of OpENer I would go with an
Os that provides you a BSD socket interface. Because porting to a
different TCP/UPD stack is the most effort.

Apart from that I don't see any major restrictions or recomendation.
Maybe if your MCU comes with an OS I would take this.

Alois

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[Martin Melik-Merkumians]

As Alois said, a BSD socket interface simplifies use, otherwise, OpENer does not have strong couplings to OSes.

I for myself use a Raspberry Pi as a test embedded system with Raspbian or Gentoo, which can also easily be extended with digital I/O via PiFace or similar add-on boards.

Best regards,

Martin

[Matthew Prestine]

I am using OpENer extensively with the STM32 product line, coupled with FreeRTOS and Lwip it is very easy to get setup and running.  Test benches show <1ms scan times are possible on extensive digital I/O and analog data.  All devices have been tested with common place PLCs that are in the industrial environment.

Matt

[Oliver King-Smith]

Thank you for everyone's responses.  It is good to hear the STM32 port went smoothly.  Any suggestions on the size of STM32 we need (in terms of RAM / Flash)?

[Frank Guan]

Can you share the porting methods for STM32+FREERTOS+LWIP?

在 2018年4月19日星期四 UTC+8上午3:22:31，Matthew Prestine写道：

[Mykhaylo Galushka]

Hi Matthew, I'm trying to port Opener to stm32 as well, but it half works, it visible in RSlinx it show up properties, but I cannot to establish forward open connection, it always fail. Is that possible to see your lwipopts.h, networkconfig.c. I feel that there is something wrong with settings but can not to find where exactly.

Michael