gateware: add AD5360 monitor (untested)

This commit is contained in:
Sebastien Bourdeauducq 2017-10-23 20:09:05 +08:00
parent 3329d8990d
commit 412548a86c
2 changed files with 60 additions and 8 deletions

View File

@ -0,0 +1,48 @@
from migen import *
from artiq.coredevice.spi import SPI_XFER_ADDR, SPI_DATA_ADDR
from artiq.coredevice.ad5360 import _AD5360_CMD_DATA, _AD5360_WRITE_CHANNEL
class AD5360Monitor(Module):
def __init__(self, spi_rtlink, ldac_rtlink=None, cs_no=0, cs_onehot=False, nchannels=32):
self.probes = [Signal(16) for i in range(nchannels)]
if ldac_rtlink is None:
write_targets = self.probes
else:
write_targets = [Signal(16) for i in range(nchannels)]
ldac_oif = ldac_rtlink.o
if hasattr(ldac_oif, "address"):
ttl_level_adr = ldac_oif.address == 0
else:
ttl_level_adr = 1
self.sync.rio_phy += \
If(ldac_oif.stb & ttl_level_adr & ~ldac_oif.data[0],
[probe.eq(write_target) for probe, write_target in zip(self.probes, write_targets)]
)
spi_oif = spi_rtlink.o
selected = Signal()
if cs_onehot:
self.sync.rio_phy += [
If(spi_oif.stb & (spi_oif.address == SPI_XFER_ADDR),
selected.eq(spi_oif.data[cs_no])
)
]
else:
self.sync.rio_phy += [
If(spi_oif.stb & (spi_oif.address == SPI_XFER_ADDR),
selected.eq(spi_oif.data[:16] == cs_no)
)
]
writes = {_AD5360_CMD_DATA | _AD5360_WRITE_CHANNEL(i): t.eq(spi_oif.data[8:24])
for i, t in enumerate(write_targets)}
self.sync.rio_phy += [
If(spi_oif.stb & (spi_oif.address == SPI_DATA_ADDR),
Case(spi_oif.data[24:], writes)
)
]

View File

@ -17,7 +17,7 @@ from misoc.integration.builder import builder_args, builder_argdict
from artiq.gateware.amp import AMPSoC, build_artiq_soc
from artiq.gateware import rtio, nist_clock, nist_qc2
from artiq.gateware.rtio.phy import (ttl_simple, ttl_serdes_7series,
dds, spi)
dds, spi, ad5360_monitor)
from artiq import __version__ as artiq_version
@ -259,15 +259,19 @@ class NIST_CLOCK(_NIST_Ions):
rtio_channels.append(rtio.Channel.from_phy(
phy, ofifo_depth=4, ififo_depth=4))
phy = spi.SPIMaster(self.platform.request("zotino_spi_p", 0),
sdac_phy = spi.SPIMaster(self.platform.request("zotino_spi_p", 0),
self.platform.request("zotino_spi_n", 0))
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy, ififo_depth=4))
self.submodules += sdac_phy
rtio_channels.append(rtio.Channel.from_phy(sdac_phy, ififo_depth=4))
pads = platform.request("zotino_ldac")
phy = ttl_serdes_7series.Output_8X(pads.p, pads.n)
self.submodules += phy
rtio_channels.append(rtio.Channel.from_phy(phy))
ldac_phy = ttl_serdes_7series.Output_8X(pads.p, pads.n)
self.submodules += ldac_phy
rtio_channels.append(rtio.Channel.from_phy(ldac_phy))
dac_monitor = ad5360_monitor.AD5360Monitor(sdac_phy.rtlink, ldac_phy.rtlink)
self.submodules += dac_monitor
sdac_phy.probes.extend(dac_monitor.probes)
phy = dds.AD9914(platform.request("dds"), 11, onehot=True)
self.submodules += phy