PPI

[venkatesha kj]

what actuaaly Programable pheripheripheral interconnect in which application it was usefull?

[Susheel Nuguru]

Not sure if I understand your question correctly.
PPI is used to convert events into tasks and this inturn will give the ability to the application to convert any event in peripheral occuring into a action (Task) in same or another peripheral without the CPU involvement. This gives very realtime event to action time, reducing the latencies for that without involving the CPU.