94 lines
3.3 KiB
Plaintext
94 lines
3.3 KiB
Plaintext
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What: /sys/bus/iio/devices/.../ddsX_freqY
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KernelVersion: 2.6.37
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Contact: linux-iio@vger.kernel.org
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Description:
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Stores frequency into tuning word Y.
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There will be more than one ddsX_freqY file, which allows for
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pin controlled FSK Frequency Shift Keying
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(ddsX_pincontrol_freq_en is active) or the user can control
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the desired active tuning word by writing Y to the
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ddsX_freqsymbol file.
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What: /sys/bus/iio/devices/.../ddsX_freqY_scale
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KernelVersion: 2.6.37
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Contact: linux-iio@vger.kernel.org
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Description:
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Scale to be applied to ddsX_freqY in order to obtain the
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desired value in Hz. If shared across all frequency registers
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Y is not present. It is also possible X is not present if
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shared across all channels.
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What: /sys/bus/iio/devices/.../ddsX_freqsymbol
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KernelVersion: 2.6.37
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Contact: linux-iio@vger.kernel.org
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Description:
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Specifies the active output frequency tuning word. The value
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corresponds to the Y in ddsX_freqY. To exit this mode the user
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can write ddsX_pincontrol_freq_en or ddsX_out_enable file.
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What: /sys/bus/iio/devices/.../ddsX_phaseY
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KernelVersion: 2.6.37
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Contact: linux-iio@vger.kernel.org
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Description:
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Stores phase into Y.
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There will be more than one ddsX_phaseY file, which allows for
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pin controlled PSK Phase Shift Keying
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(ddsX_pincontrol_phase_en is active) or the user can
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control the desired phase Y which is added to the phase
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accumulator output by writing Y to the en_phase file.
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What: /sys/bus/iio/devices/.../ddsX_phaseY_scale
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KernelVersion: 2.6.37
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Contact: linux-iio@vger.kernel.org
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Description:
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Scale to be applied to ddsX_phaseY in order to obtain the
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desired value in rad. If shared across all phase registers
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Y is not present. It is also possible X is not present if
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shared across all channels.
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What: /sys/bus/iio/devices/.../ddsX_phasesymbol
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KernelVersion: 2.6.37
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Contact: linux-iio@vger.kernel.org
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Description:
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Specifies the active phase Y which is added to the phase
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accumulator output. The value corresponds to the Y in
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ddsX_phaseY. To exit this mode the user can write
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ddsX_pincontrol_phase_en or disable file.
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What: /sys/bus/iio/devices/.../ddsX_pincontrol_en
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What: /sys/bus/iio/devices/.../ddsX_pincontrol_freq_en
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What: /sys/bus/iio/devices/.../ddsX_pincontrol_phase_en
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KernelVersion: 2.6.37
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Contact: linux-iio@vger.kernel.org
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Description:
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ddsX_pincontrol_en: Both, the active frequency and phase is
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controlled by the respective phase and frequency control inputs.
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In case the device in question allows to independent controls,
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then there are dedicated files (ddsX_pincontrol_freq_en,
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ddsX_pincontrol_phase_en).
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What: /sys/bus/iio/devices/.../ddsX_out_enable
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What: /sys/bus/iio/devices/.../ddsX_outY_enable
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KernelVersion: 2.6.37
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Contact: linux-iio@vger.kernel.org
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Description:
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ddsX_outY_enable controls signal generation on output Y of
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channel X. Y may be suppressed if all channels are
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controlled together.
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What: /sys/bus/iio/devices/.../ddsX_outY_wavetype
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KernelVersion: 2.6.37
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Contact: linux-iio@vger.kernel.org
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Description:
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Specifies the output waveform.
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(sine, triangle, ramp, square, ...)
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For a list of available output waveform options read
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available_output_modes.
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What: /sys/bus/iio/devices/.../ddsX_outY_wavetype_available
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KernelVersion: 2.6.37
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Contact: linux-iio@vger.kernel.org
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Description:
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Lists all available output waveform options.
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