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Contents
module HDLRuby::High::Std
##
# Standard HDLRuby::High library: handshake protocols.
#
########################################################################
## Module describing a simple client handshake for working.
# @param event the event to synchronize the handshake.
# @param req the signal telling a request is there.
# @param cond the condition allowing the protocol.
system :hs_client do |event, req, cond=_1|
input :reqI
output ackI: 0
# A each synchronization event.
par(event) do
# Is the protocol is allowed and a request is present.
hif(cond & reqI) do
# Yes perform the action and tell the request has been treated.
req <= 1 if req
ackI <= 1
end
helse do
# No, do not perform the action, and do not acknowledge.
req <= 0 if req
ackI <= 0
end
end
end
## Module describing a simple server handshake for working.
# @param event the event to synchronize the handshake.
# @param req the signal for asking a new request.
system :hs_server do |event, req|
output reqO: 0
input :ackO
# A each synchronization event.
par(event) do
# Shall we start the output?
hif(ackO) { reqO <= 0 }
hif(req) { reqO <= 1 }
end
end
## Module describing a pipe with handshakes.
# @param event the event to synchronize the handshakes.
# @param read the signal telling there is a request from the client side
# @param write the signal used for asking the server to issue a request
system :hs_pipe do |event,read,write|
inner :cond
include(hs_client(event,read,cond))
include(hs_server(event,write))
cond <= ~reqO
end
end
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25 entries across 25 versions & 1 rubygems