drivers/staging/iio/Documentation/sysfs-bus-iio-dds

   1
   2 What:           /sys/bus/iio/devices/.../out_altvoltageX_frequencyY
   3 KernelVersion:  2.6.37
   4 Contact:        [email protected]
   5 Description:
   6                 Stores frequency into tuning word Y.
   7                 There will be more than one out_altvoltageX_frequencyY file,
   8                 which allows for pin controlled FSK Frequency Shift Keying
   9                 (out_altvoltageX_pincontrol_frequency_en is active) or the user
  10                 can control the desired active tuning word by writing Y to the
  11                 out_altvoltageX_frequencysymbol file.
  12
  13 What:           /sys/bus/iio/devices/.../out_altvoltageX_frequencyY_scale
  14 KernelVersion:  2.6.37
  15 Contact:        [email protected]
  16 Description:
  17                 Scale to be applied to out_altvoltageX_frequencyY in order to
  18                 obtain the desired value in Hz. If shared across all frequency
  19                 registers Y is not present. It is also possible X is not present
  20                 if shared across all channels.
  21
  22 What:           /sys/bus/iio/devices/.../out_altvoltageX_frequencysymbol
  23 KernelVersion:  2.6.37
  24 Contact:        [email protected]
  25 Description:
  26                 Specifies the active output frequency tuning word. The value
  27                 corresponds to the Y in out_altvoltageX_frequencyY.
  28                 To exit this mode the user can write
  29                 out_altvoltageX_pincontrol_frequency_en or
  30                 out_altvoltageX_out_enable file.
  31
  32 What:           /sys/bus/iio/devices/.../out_altvoltageX_phaseY
  33 KernelVersion:  2.6.37
  34 Contact:        [email protected]
  35 Description:
  36                 Stores phase into Y.
  37                 There will be more than one out_altvoltageX_phaseY file, which
  38                 allows for pin controlled PSK Phase Shift Keying
  39                 (out_altvoltageX_pincontrol_phase_en is active) or the user can
  40                 control the desired phase Y which is added to the phase
  41                 accumulator output by writing Y to the phase_en file.
  42
  43 What:           /sys/bus/iio/devices/.../out_altvoltageX_phaseY_scale
  44 KernelVersion:  2.6.37
  45 Contact:        [email protected]
  46 Description:
  47                 Scale to be applied to out_altvoltageX_phaseY in order to obtain
  48                 the desired value in rad. If shared across all phase registers
  49                 Y is not present. It is also possible X is not present if
  50                 shared across all channels.
  51
  52 What:           /sys/bus/iio/devices/.../out_altvoltageX_phasesymbol
  53 KernelVersion:  2.6.37
  54 Contact:        [email protected]
  55 Description:
  56                 Specifies the active phase Y which is added to the phase
  57                 accumulator output. The value corresponds to the Y in
  58                 out_altvoltageX_phaseY. To exit this mode the user can write
  59                 out_altvoltageX_pincontrol_phase_en or disable file.
  60
  61 What:           /sys/bus/iio/devices/.../out_altvoltageX_pincontrol_en
  62 What:           /sys/bus/iio/devices/.../out_altvoltageX_pincontrol_frequency_en
  63 What:           /sys/bus/iio/devices/.../out_altvoltageX_pincontrol_phase_en
  64 KernelVersion:  2.6.37
  65 Contact:        [email protected]
  66 Description:
  67                 out_altvoltageX_pincontrol_en: Both, the active frequency and
  68                 phase is controlled by the respective phase and frequency
  69                 control inputs. In case the device in features independent
  70                 controls, then there are dedicated files
  71                 (out_altvoltageX_pincontrol_frequency_en,
  72                 out_altvoltageX_pincontrol_phase_en).
  73
  74 What:           /sys/bus/iio/devices/.../out_altvoltageX_out_enable
  75 What:           /sys/bus/iio/devices/.../out_altvoltageX_outY_enable
  76 KernelVersion:  2.6.37
  77 Contact:        [email protected]
  78 Description:
  79                 out_altvoltageX_outY_enable controls signal generation on
  80                 output Y of channel X. Y may be suppressed if all channels are
  81                 controlled together.
  82
  83 What:           /sys/bus/iio/devices/.../out_altvoltageX_outY_wavetype
  84 KernelVersion:  2.6.37
  85 Contact:        [email protected]
  86 Description:
  87                 Specifies the output waveform.
  88                 (sine, triangle, ramp, square, ...)
  89                 For a list of available output waveform options read
  90                 available_output_modes.
  91
  92 What:           /sys/bus/iio/devices/.../out_altvoltageX_outY_wavetype_available
  93 KernelVersion:  2.6.37
  94 Contact:        [email protected]
  95 Description:
  96                 Lists all available output waveform options.