forked from M-Labs/artiq
ad9914: minor fixes
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@ -11,6 +11,12 @@ from artiq.coredevice.rtio import rtio_output
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from numpy import int32, int64
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__all__ = [
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"AD9914",
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"PHASE_MODE_CONTINUOUS", "PHASE_MODE_ABSOLUTE", "PHASE_MODE_TRACKING"
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]
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_PHASE_MODE_DEFAULT = -1
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PHASE_MODE_CONTINUOUS = 0
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PHASE_MODE_ABSOLUTE = 1
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@ -54,7 +60,7 @@ class AD9914:
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kernel_invariants = {"core", "sysclk", "bus_channel", "channel",
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"rtio_period_mu", "sysclk_per_mu", "write_duration_mu",
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"dac_cal_duration_mu", "init_duration_mu", "init_sync_duration_mu",
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"set_duration_mu", "set_x_duration_mu"
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"set_duration_mu", "set_x_duration_mu", "exit_x_duration_mu",
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"continuous_phase_comp"}
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def __init__(self, dmgr, sysclk, bus_channel, channel, core_device="core"):
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@ -179,7 +185,8 @@ class AD9914:
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"""Sets the DDS channel to the specified frequency and phase.
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This uses machine units (FTW and POW). The frequency tuning word width
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is 32, and the phase offset word width is 16.
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is 32, the phase offset word width is 16, and the amplitude scale factor
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width is 12.
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The "frequency update" pulse is sent to the DDS with a fixed latency
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with respect to the current position of the time cursor.
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