Profinet RT parser

The primary protocols of concern are:

• DCP (Discovery and basic Configuration Protocol, L2)
• LLDP (Link Layer Discovery Protocol, L2)
• PPM (Cyclic Provider Protocol Machine, L3?)
• CPM (Cyclic Consumer Provider Protocol Machine, L3?)
• CMDEV (Context Management Protocol Machine Device, L3?)
• CMINA (Context Management Ip and Name Assignment protocol machine, L3?)
• CMIO (Context Management Input Output protocol, L3?, IEC 61158-6-10:2019)
• PBE (Parameter Begin End Protocol, L3?)
• CMRDR (Context Management Read Record Responder, L3?)
• CMPRC (Context Management RPC Device, L3?)
• CMSM (Context Management Surveillance, L3?)
• CMSU (Context Management Startup, L3?)
• CMWRR (Context Management Write Record Responder, L3?)
• FSPM (Fieldbus Application Layer Service Protocol Machine, L3?)
• PLUGSM (Plug State Machine, L3?)
• GSDML (ML)

Planning

• HW Prototype: ~6w (W32)
• SW Comm Prototype: +~2W (W34)
• SW Dispensor Prototype: (concurrent) +~1W (W35)
• Spec sheet

Error states

• General alarm
• Photocell stuck
• Motor stuck

Resources

• GSDML sample: https://github.com/andre-lost-a-pig/p-net-stm32/blob/main/Projects/NUCLEO-H723ZG-fatfs-freertos-lwip-osal-pnet-andre/Src/pn_dev/GSDML-V2.4-RT-Labs-P-Net-Sample-App-20220324.xml
• Profinet Python client: https://github.com/alfredkrohmer/profinet
• P-net reference impl: https://github.com/rtlabs-com/p-net/
• Captures: https://github.com/miguelob/ICS-Hacking/tree/main/Profinet%20%26%20Profibus/pcaps
• RT decoder: 0315f0f698/ProfinetTools.Logic/Transport/ProfinetEthernetTransport.cs (L226-L301)