We currently have a piece of hardware running an RTOS that needs the communication stack to be certified to DAL-B. Everything has already been developed for non commercial aerospace applications, although we now have a commercial aerospace customer who is interested in our solution.
The communications stack handles a variety of different communication methods, and we're deciding on a make vs buy decision. These communication methods include ARINC 429, RS422 and Ethernet.
Are there any products out there that are DO-178 certified and handle these communication protocols? Or will we need to go through the certification process for our own implementations?