I've begun a project using FreeRTOS and have completed significant portions of it.  Now we decided we'd like to add a TCP/IP stack to the product.

I was looking at High Integrity Systems NicheLite.  They claim it runs on OpenRTOS.  Does anyone know if I need to upgrade to OpenRTOS for this to work, or will it work directly with FreeRTOS?

It sounds like there is very little if any difference between FreeRTOS and OpenRTOS.

Thanks.

It will work with FreeRTOS, but doing so will be breaching the InterNiche licensing conditions as InterNiche (not High Integrity Systems) do not permit it to be linked with open source software.

Ah, I see.

What's involved in the upgrade to OpenRTOS, are they identical?  Is it just a matter of obtaining the license, or is there some changes that need to be made?

The only difference between FreeRTOS and OpenRTOS is the license under which they are distributed (including things like legal protection, contract support, etc., etc.).  Technically upgrading does not require anything to actually be changed in your project.

Regards.

STMicroelectronics says they've licensed a free NicheLite for use on the STM32.  My project uses the STM32; would that version be OK to use with FreeRTOS?  (I've sent several emails to NicheLite and they don't respond, that's why I'm asking the questions here).

Thanks again for the help.

Interniche will not reply to emails regarding free products, unfortunately. Not like here. Just read the license conditions that come with the download from ST.