Experimental Physics and
Industrial Control System

Hi

 

We want to write a driver for a device we have in which its command interface consists of bytes in a specific order (like C structs), for example first byte is command type, 2^nd byte is address and then followed by 4 bytes as the data; 6 bytes in total. Is asyGenericPointerSyncIO the correct choice? I could not see anywhere in the sync IO interfaces where I pass the struct size (Like in the write/read system calls). How does the write/read operations work with these interfaces and how do they detect how many bytes to write? Do I need to use the void pointers inside the asynUser structure?

 

Thanks!

Abdalla