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grabber: add MultiReg to transfer ROI boundaries

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This commit is contained in:
Sebastien Bourdeauducq 2018-07-21 13:40:12 +08:00
parent 4a4d0f8e51
commit 7b75026391
1 changed files with 4 additions and 1 deletions
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5
artiq/gateware/rtio/phy/grabber.py
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@ -84,8 +84,11 @@ class Grabber(Module):
for n, roi_engine in enumerate(self.roi_engines):
for offset, target in enumerate([roi_engine.cfg.x0, roi_engine.cfg.x1,
roi_engine.cfg.y0, roi_engine.cfg.y1]):
roi_boundary = Signal.like(target)
roi_boundary.attr.add("no_retiming")
self.sync.rtio += If(self.config.o.stb & (self.config.o.address == 4*n+offset),
target.eq(self.config.o.data))
roi_boundary.eq(self.config.o.data))
self.specials += MultiReg(roi_boundary, target, "cl")
self.sync.rio += If(self.gate_data.o.stb,
self.serializer.gate.eq(self.gate_data.o.data))