mirror of https://github.com/m-labs/artiq.git
69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
""""RTIO driver for the Analog Devices ADF[45]35[56] family of GHz PLLs
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on Mirny-style prefixed SPI buses
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"""
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# https://github.com/analogdevicesinc/linux/blob/master/Documentation/devicetree/bindings/iio/frequency/adf5355.txt
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# https://github.com/analogdevicesinc/linux/blob/master/drivers/iio/frequency/adf5355.c
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# https://www.analog.com/media/en/technical-documentation/data-sheets/ADF5356.pdf
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# https://www.analog.com/media/en/technical-documentation/data-sheets/ADF5355.pdf
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# https://www.analog.com/media/en/technical-documentation/user-guides/EV-ADF5356SD1Z-UG-1087.pdf
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from numpy import int32
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from artiq.language.core import (kernel, portable, delay_mu, delay, now_mu,
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at_mu)
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from artiq.language.units import ns, us
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from artiq.coredevice import spi2 as spi, mirny
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SPI_CONFIG = (0*spi.SPI_OFFLINE | 0*spi.SPI_END |
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0*spi.SPI_INPUT | 1*spi.SPI_CS_POLARITY |
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0*spi.SPI_CLK_POLARITY | 0*spi.SPI_CLK_PHASE |
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0*spi.SPI_LSB_FIRST | 0*spi.SPI_HALF_DUPLEX)
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class ADF5355:
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"""Analog Devices AD[45]35[56] family of GHz PLLs.
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:param cpld_device: Mirny CPLD device name
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:param sw_device: Mirny RF switch device name
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:param channel: Mirny RF channel index
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:param core_device: Core device name (default: "core")
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"""
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kernel_invariants = {"cpld", "sw", "channel", "core"}
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def __init__(self, dmgr, cpld_device, sw_device, channel,
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core="core"):
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self.cpld = dmgr.get(cpld_device)
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self.sw = dmgr.get(sw_device)
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self.channel = channel
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self.core = dmgr.get(core)
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@kernel
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def set_att_mu(self, att):
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"""Set digital step attenuator in machine units.
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:param att: Attenuation setting, 8 bit digital.
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"""
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self.cpld.set_att_mu(self.channel, att)
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@kernel
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def write(self, data):
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self.cpld.write_ext(self.channel | 4, 32, data)
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@kernel
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def read_muxout(self):
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return bool(self.cpld.read_reg(0) & (1 << (self.channel + 8)))
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@kernel
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def init(self):
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self.write((1 << 27) | 4)
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if not self.read_muxout():
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raise ValueError("MUXOUT not high")
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delay(100*us)
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self.write((2 << 27) | 4)
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if self.read_muxout():
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raise ValueError("MUXOUT not low")
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delay(100*us)
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self.write((6 << 27) | 4)
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