forked from M-Labs/artiq
ad9910: flake8 [nfc]
Signed-off-by: Robert Jördens <rj@quartiq.de>
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6d525e2f9a
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832690af9a
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@ -2,7 +2,7 @@ from numpy import int32, int64
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from artiq.language.core import (
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kernel, delay, portable, delay_mu, now_mu, at_mu)
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from artiq.language.units import us, ns, ms
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from artiq.language.units import us, ms
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from artiq.coredevice import spi2 as spi
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from artiq.coredevice import urukul
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@ -72,11 +72,12 @@ class AD9910:
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set this to the delay tap number returned.
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"""
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kernel_invariants = {"chip_select", "cpld", "core", "bus",
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"ftw_per_hz", "pll_n", "io_update_delay", "sysclk_per_mu"}
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"ftw_per_hz", "pll_n", "io_update_delay",
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"sysclk_per_mu"}
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def __init__(self, dmgr, chip_select, cpld_device, sw_device=None,
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pll_n=40, pll_cp=7, pll_vco=5, sync_delay_seed=-1,
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io_update_delay=0):
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pll_n=40, pll_cp=7, pll_vco=5, sync_delay_seed=-1,
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io_update_delay=0):
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self.cpld = dmgr.get(cpld_device)
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self.core = self.cpld.core
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self.bus = self.cpld.bus
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@ -95,7 +96,7 @@ class AD9910:
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assert self.sysclk_per_mu == sysclk*self.core.ref_period
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assert 0 <= pll_vco <= 5
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vco_min, vco_max = [(370, 510), (420, 590), (500, 700),
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(600, 880), (700, 950), (820, 1150)][pll_vco]
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(600, 880), (700, 950), (820, 1150)][pll_vco]
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assert vco_min <= sysclk/1e6 <= vco_max
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self.pll_vco = pll_vco
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assert 0 <= pll_cp <= 7
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@ -106,7 +107,9 @@ class AD9910:
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@kernel
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def set_phase_mode(self, phase_mode):
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"""Sets the default phase mode for future calls to :meth:`set` and
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"""Set the default phase mode.
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for future calls to :meth:`set` and
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:meth:`set_mu`. Supported phase modes are:
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* :const:`PHASE_MODE_CONTINUOUS`: the phase accumulator is unchanged
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@ -155,10 +158,10 @@ class AD9910:
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:param data: Data to be written
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"""
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self.bus.set_config_mu(urukul.SPI_CONFIG, 8,
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urukul.SPIT_DDS_WR, self.chip_select)
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urukul.SPIT_DDS_WR, self.chip_select)
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self.bus.write(addr << 24)
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self.bus.set_config_mu(urukul.SPI_CONFIG | spi.SPI_END, 32,
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urukul.SPIT_DDS_WR, self.chip_select)
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urukul.SPIT_DDS_WR, self.chip_select)
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self.bus.write(data)
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@kernel
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@ -168,11 +171,11 @@ class AD9910:
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:param addr: Register address
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"""
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self.bus.set_config_mu(urukul.SPI_CONFIG, 8,
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urukul.SPIT_DDS_WR, self.chip_select)
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urukul.SPIT_DDS_WR, self.chip_select)
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self.bus.write((addr | 0x80) << 24)
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self.bus.set_config_mu(urukul.SPI_CONFIG | spi.SPI_END
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| spi.SPI_INPUT, 32,
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urukul.SPIT_DDS_RD, self.chip_select)
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self.bus.set_config_mu(
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urukul.SPI_CONFIG | spi.SPI_END | spi.SPI_INPUT,
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32, urukul.SPIT_DDS_RD, self.chip_select)
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self.bus.write(0)
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return self.bus.read()
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@ -185,13 +188,13 @@ class AD9910:
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:param data_low: Low (LSB) 32 data bits
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"""
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self.bus.set_config_mu(urukul.SPI_CONFIG, 8,
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urukul.SPIT_DDS_WR, self.chip_select)
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urukul.SPIT_DDS_WR, self.chip_select)
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self.bus.write(addr << 24)
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self.bus.set_config_mu(urukul.SPI_CONFIG, 32,
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urukul.SPIT_DDS_WR, self.chip_select)
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urukul.SPIT_DDS_WR, self.chip_select)
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self.bus.write(data_high)
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self.bus.set_config_mu(urukul.SPI_CONFIG | spi.SPI_END, 32,
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urukul.SPIT_DDS_WR, self.chip_select)
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urukul.SPIT_DDS_WR, self.chip_select)
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self.bus.write(data_low)
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@kernel
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@ -305,25 +308,25 @@ class AD9910:
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@portable(flags={"fast-math"})
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def frequency_to_ftw(self, frequency):
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"""Returns the frequency tuning word corresponding to the given
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"""Return the frequency tuning word corresponding to the given
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frequency.
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"""
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return int32(round(self.ftw_per_hz*frequency))
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@portable(flags={"fast-math"})
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def turns_to_pow(self, turns):
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"""Returns the phase offset word corresponding to the given phase
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"""Return the phase offset word corresponding to the given phase
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in turns."""
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return int32(round(turns*0x10000))
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@portable(flags={"fast-math"})
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def amplitude_to_asf(self, amplitude):
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"""Returns amplitude scale factor corresponding to given amplitude."""
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"""Return amplitude scale factor corresponding to given amplitude."""
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return int32(round(amplitude*0x3ffe))
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@portable(flags={"fast-math"})
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def pow_to_turns(self, pow):
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"""Returns the phase in turns corresponding to a given phase offset
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"""Return the phase in turns corresponding to a given phase offset
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word."""
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return pow/0x10000
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@ -397,7 +400,8 @@ class AD9910:
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@kernel
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def clear_smp_err(self):
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"""Clears the SMP_ERR flag and enables SMP_ERR validity monitoring.
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"""Clear the SMP_ERR flag and enables SMP_ERR validity monitoring.
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Violations of the SYNC_IN sample and hold margins will result in
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SMP_ERR being asserted. This then also activates the red LED on
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the respective Urukul channel.
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@ -513,7 +517,8 @@ class AD9910:
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d0 = self.io_update_delay
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t0 = int32(self.measure_io_update_alignment(d0))
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for i in range(max_delay - 1):
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t = self.measure_io_update_alignment((d0 + i + 1) & (max_delay - 1))
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t = self.measure_io_update_alignment(
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(d0 + i + 1) & (max_delay - 1))
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if t != t0:
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return (d0 + i + period//2) & (period - 1)
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raise ValueError("no IO_UPDATE-SYNC_CLK alignment edge found")
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