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@startuml
skinparam backgroundColor #FEFEFE
box "Application" #0091BD
participant "main()" as main
end box
box "Driver library" #00C1DE
participant "Device" as ddev
participant "Buffer" as dbuf
participant "Network" as dnet
participant "Inference" as dinf
end box
box "Kernel driver" #7D868C
participant "Device" as kdev
participant "Buffer" as kbuf
participant "Network" as knet
participant "Inference" as kinf
participant "Mailbox" as kmbox
end box
box "Cortex-M application" #E5ECEB
participant "Message process" as cmsg
end box
activate main
note over main
Create device
Create network
Allocate and fill IFM buffers
Allocate OFM buffers
end note
main -> dinf++: Inference(network, ifm, ofm)
dinf -> knet++: ioctl(INFERENCE_CREATE, network, ifm, ofm)
note over kinf
Create inference
end note
knet -> kinf++: create(network, ifm, ofm)
kinf -> kmbox++: inference()
note over kmbox
Write inference request to queue in shared memory
Send IRQ
end note
kmbox -> cmsg: INFERENCE_REQUEST
return
return file descriptor
return file descriptor
return
main -> dinf++: wait()
dinf -> kinf++: poll()
cmsg -> kdev++: INFERENCE_RESPONSE
note over kdev
Inference response is handled by the IRQ bottom handler thread
Message is read from queue in shared memory
end note
kdev -> kmbox++: read()
return
note over kinf
Inference response handler unlocks the polling thread
end note
kdev -> kinf++: inference_response()
return
deactivate cmsg
return
return
@enduml
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