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examples/transport: some fixes + PDQ2 API refinements

This commit is contained in:
Sebastien Bourdeauducq 2014-10-17 00:04:30 +08:00
parent 27d1a5ffb9
commit 3c49d7448d
1 changed files with 29 additions and 26 deletions
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53
examples/transport.py
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@ -5,35 +5,37 @@ from artiq.devices import corecom_serial, core, dds_core, rtio_core, pdq2
class Transport(AutoContext): class Transport(AutoContext):
parameters = ("bd pmt repeats nbins " parameters = (
"bd pmt repeats nbins "
"electrodes transport_data wait_at_stop speed" "electrodes transport_data wait_at_stop speed"
) )
def prepare(self, stop): def prepare(self, stop):
t = self.data["t"][:stop]*self.speed t = self.transport_data["t"][:stop]*self.speed
u = self.data["u"][:stop] u = self.transport_data["u"][:stop]
# start a new frame, selects possible frame id based on rtio_frame # start a new frame
# assignments from coredev self.tf = self.electrodes.create_frame()
self.transport = self.electrodes.open_frame()
# interpolates t and u and appends the (t, u) segment to the frame # interpolates t and u and appends the (t, u) segment to the frame
# adds wait-for-trigger to the first line/spline knot # adds wait-for-trigger to the first line/spline knot
# will also apply offset and gain calibration data # will also apply offset and gain calibration data
# stores duration and the fact that this segment needs to be triggered # stores duration and the fact that this segment needs to be triggered
# both (duration and segment triggering flag) to be retrieved during # both (duration and segment triggering flag) to be retrieved during
# kernel compilation, see transport() # kernel compilation, see transport()
self.transport.append(t, u, trigger=True) self.tf.append("to_stop",
t, u, trigger=True)
# append the reverse transport (from stop to 0) # append the reverse transport (from stop to 0)
# both durations are the same in this case # both durations are the same in this case
self.transport.append(t[-1] - t[::-1], u[::-1], trigger=True, self.tf.append("from_stop",
name="from_stop") t[-1] - t[::-1], u[::-1], trigger=True)
# closes the frame with a wait line before jumping back into the jump table # closes the frame with a wait line before jumping back into
# so that frame signal can be set before the jump # the jump table so that frame signal can be set before the jump
# also mark the frame as closed and prevent further append()ing # also mark the frame as closed and prevent further append()ing
self.transport.close() self.tf.close()
# packs all in-use frames, distributes them to the sub-devices in # user must pass all frames that are going to be used next
# CompoundPDQ2 and uploads them # selects possible frame id based on rtio_frame assignments from coredev
# distributes frames to the sub-devices in CompoundPDQ2 and uploads them
# uploading is ARM_DIS, writing, ARM_EN # uploading is ARM_DIS, writing, ARM_EN
self.electrodes.prepare() self.electrodes.prepare(self.tf)
@kernel @kernel
def cool(self): def cool(self):
@ -50,20 +52,19 @@ class Transport(AutoContext):
# (it would be nice if this could be made zero-duration/not advancing the # (it would be nice if this could be made zero-duration/not advancing the
# timeline by smart scheduling of this frame-select + trigger + minimum wait # timeline by smart scheduling of this frame-select + trigger + minimum wait
# sequence) # sequence)
self.transport.begin() self.tf.begin()
# triggers pdqs to start transport frame segment # triggers pdqs to start transport frame segment
# plays the transport waveform from 0 to stop # plays the transport waveform from 0 to stop
# delay()s the core by the duration of the waveform segment # delay()s the core by the duration of the waveform segment
self.transport.advance() self.tf.to_stop.advance()
# leaves the ion in the dark at the transport endpoint # leaves the ion in the dark at the transport endpoint
delay(self.wait_at_stop) delay(self.wait_at_stop)
# transport back (again: trigger, delay()) # transport back (again: trigger, delay())
# can explicitly reference segment name # segments can only be advance()ed in order
# yet segments can only be advance()ed in order self.tf.from_stop.advance()
self.transport.advance(name="from_stop")
# ensures all segments have been advanced() through, must leave pdq # ensures all segments have been advanced() through, must leave pdq
# in a state where the next frame can begin() # in a state where the next frame can begin()
self.transport.finish() self.tf.finish()
@kernel @kernel
def detect(self): def detect(self):
@ -94,8 +95,8 @@ class Transport(AutoContext):
self.histogram.append(hist[i]) self.histogram.append(hist[i])
def scan(self, stops): def scan(self, stops):
self.histogram = []
for s in stops: for s in stops:
self.histogram = []
# non-kernel, calculate waveforms, build frames # non-kernel, calculate waveforms, build frames
# could also be rpc'ed from repeat() # could also be rpc'ed from repeat()
self.prepare(s) self.prepare(s)
@ -115,10 +116,12 @@ if __name__ == "__main__":
with corecom_serial.CoreCom() as com: with corecom_serial.CoreCom() as com:
coredev = core.Core(com) coredev = core.Core(com)
exp = PhotonHistogram( exp = Transport(
core=coredev, core=coredev,
bd=dds_core.DDS(core=coredev, dds_sysclk=1*GHz, bd=dds_core.DDS(core=coredev, dds_sysclk=1*GHz,
reg_channel=0, rtio_channel=1), reg_channel=0, rtio_switch=1),
bdd=dds_core.DDS(core=coredev, dds_sysclk=1*GHz,
reg_channel=1, rtio_switch=2),
pmt=rtio_core.RTIOIn(core=coredev, channel=0), pmt=rtio_core.RTIOIn(core=coredev, channel=0),
# a compound pdq device that wraps multiple usb devices (looked up # a compound pdq device that wraps multiple usb devices (looked up
# by usb "serial number"/id) into one # by usb "serial number"/id) into one
@ -132,5 +135,5 @@ if __name__ == "__main__":
nbins=100 nbins=100
) )
# scan transport endpoint # scan transport endpoint
stop = range(0, len(exp.transport_data["t"]), 10) stop = range(10, len(exp.transport_data["t"]), 10)
exp.scan(stop) exp.scan(stop)