187 lines
8.6 KiB
Plaintext
187 lines
8.6 KiB
Plaintext
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What: /sys/bus/iio/devices/iio:deviceX/buffer/length
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Number of scans contained by the buffer.
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Since Kernel 5.11, multiple buffers are supported.
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so, it is better to use, instead:
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/sys/bus/iio/devices/iio:deviceX/bufferY/length
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What: /sys/bus/iio/devices/iio:deviceX/buffer/enable
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KernelVersion: 2.6.35
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Contact: linux-iio@vger.kernel.org
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Description:
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Actually start the buffer capture up. Will start trigger
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if first device and appropriate.
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Since Kernel 5.11, multiple buffers are supported.
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so, it is better to use, instead:
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/sys/bus/iio/devices/iio:deviceX/bufferY/enable
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What: /sys/bus/iio/devices/iio:deviceX/scan_elements
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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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Directory containing interfaces for elements that will be
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captured for a single triggered sample set in the buffer.
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Since kernel 5.11 the scan_elements attributes are merged into
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the bufferY directory, to be configurable per buffer.
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What: /sys/.../iio:deviceX/scan_elements/in_accel_x_en
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What: /sys/.../iio:deviceX/scan_elements/in_accel_y_en
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What: /sys/.../iio:deviceX/scan_elements/in_accel_z_en
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What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_en
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What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_en
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What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_en
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What: /sys/.../iio:deviceX/scan_elements/in_magn_x_en
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What: /sys/.../iio:deviceX/scan_elements/in_magn_y_en
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What: /sys/.../iio:deviceX/scan_elements/in_magn_z_en
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What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_en
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What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_en
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What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_en
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What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_en
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What: /sys/.../iio:deviceX/scan_elements/in_timestamp_en
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_en
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_en
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY-voltageZ_en
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_en
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_en
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What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_en
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What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_en
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What: /sys/.../iio:deviceX/scan_elements/in_incli_x_en
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What: /sys/.../iio:deviceX/scan_elements/in_incli_y_en
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What: /sys/.../iio:deviceX/scan_elements/in_pressureY_en
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What: /sys/.../iio:deviceX/scan_elements/in_pressure_en
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What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_en
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What: /sys/.../iio:deviceX/scan_elements/in_proximity_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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Scan element control for triggered data capture.
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Since kernel 5.11 the scan_elements attributes are merged into
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the bufferY directory, to be configurable per buffer.
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What: /sys/.../iio:deviceX/scan_elements/in_accel_type
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What: /sys/.../iio:deviceX/scan_elements/in_anglvel_type
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What: /sys/.../iio:deviceX/scan_elements/in_magn_type
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What: /sys/.../iio:deviceX/scan_elements/in_incli_type
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_type
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What: /sys/.../iio:deviceX/scan_elements/in_voltage_type
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_type
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_type
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_type
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What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_type
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What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_type
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What: /sys/.../iio:deviceX/scan_elements/in_timestamp_type
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What: /sys/.../iio:deviceX/scan_elements/in_pressureY_type
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What: /sys/.../iio:deviceX/scan_elements/in_pressure_type
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What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_type
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What: /sys/.../iio:deviceX/scan_elements/in_proximity_type
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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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Description of the scan element data storage within the buffer
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and hence the form in which it is read from user-space.
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Form is [be|le]:[s|u]bits/storagebits[>>shift].
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be or le specifies big or little endian. s or u specifies if
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signed (2's complement) or unsigned. bits is the number of bits
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of data and storagebits is the space (after padding) that it
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occupies in the buffer. shift if specified, is the shift that
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needs to be applied prior to masking out unused bits. Some
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devices put their data in the middle of the transferred elements
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with additional information on both sides. Note that some
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devices will have additional information in the unused bits
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so to get a clean value, the bits value must be used to mask
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the buffer output value appropriately. The storagebits value
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also specifies the data alignment. So s48/64>>2 will be a
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signed 48 bit integer stored in a 64 bit location aligned to
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a 64 bit boundary. To obtain the clean value, shift right 2
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and apply a mask to zero the top 16 bits of the result.
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For other storage combinations this attribute will be extended
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appropriately.
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Since kernel 5.11 the scan_elements attributes are merged into
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the bufferY directory, to be configurable per buffer.
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_index
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_supply_index
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_i_index
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What: /sys/.../iio:deviceX/scan_elements/in_voltageY_q_index
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What: /sys/.../iio:deviceX/scan_elements/in_voltage_i_index
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What: /sys/.../iio:deviceX/scan_elements/in_voltage_q_index
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What: /sys/.../iio:deviceX/scan_elements/in_accel_x_index
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What: /sys/.../iio:deviceX/scan_elements/in_accel_y_index
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What: /sys/.../iio:deviceX/scan_elements/in_accel_z_index
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What: /sys/.../iio:deviceX/scan_elements/in_anglvel_x_index
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What: /sys/.../iio:deviceX/scan_elements/in_anglvel_y_index
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What: /sys/.../iio:deviceX/scan_elements/in_anglvel_z_index
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What: /sys/.../iio:deviceX/scan_elements/in_magn_x_index
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What: /sys/.../iio:deviceX/scan_elements/in_magn_y_index
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What: /sys/.../iio:deviceX/scan_elements/in_magn_z_index
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What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_index
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What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_index
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What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_magnetic_tilt_comp_index
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What: /sys/.../iio:deviceX/scan_elements/in_rot_from_north_true_tilt_comp_index
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What: /sys/.../iio:deviceX/scan_elements/in_incli_x_index
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What: /sys/.../iio:deviceX/scan_elements/in_incli_y_index
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What: /sys/.../iio:deviceX/scan_elements/in_timestamp_index
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What: /sys/.../iio:deviceX/scan_elements/in_pressureY_index
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What: /sys/.../iio:deviceX/scan_elements/in_pressure_index
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What: /sys/.../iio:deviceX/scan_elements/in_rot_quaternion_index
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What: /sys/.../iio:deviceX/scan_elements/in_proximity_index
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KernelVersion: 2.6.37
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Description:
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A single positive integer specifying the position of this
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scan element in the buffer. Note these are not dependent on
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what is enabled and may not be contiguous. Thus for user-space
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to establish the full layout these must be used in conjunction
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with all _en attributes to establish which channels are present,
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and the relevant _type attributes to establish the data storage
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format.
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Since kernel 5.11 the scan_elements attributes are merged into
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the bufferY directory, to be configurable per buffer.
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What: /sys/bus/iio/devices/iio:deviceX/buffer/watermark
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KernelVersion: 4.2
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Contact: linux-iio@vger.kernel.org
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Description:
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A single positive integer specifying the maximum number of scan
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elements to wait for.
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Poll will block until the watermark is reached.
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Blocking read will wait until the minimum between the requested
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read amount or the low water mark is available.
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Non-blocking read will retrieve the available samples from the
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buffer even if there are less samples then watermark level. This
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allows the application to block on poll with a timeout and read
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the available samples after the timeout expires and thus have a
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maximum delay guarantee.
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Since Kernel 5.11, multiple buffers are supported.
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so, it is better to use, instead:
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/sys/bus/iio/devices/iio:deviceX/bufferY/watermark
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What: /sys/bus/iio/devices/iio:deviceX/buffer/data_available
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KernelVersion: 4.16
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Contact: linux-iio@vger.kernel.org
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Description:
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A read-only value indicating the bytes of data available in the
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buffer. In the case of an output buffer, this indicates the
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amount of empty space available to write data to. In the case of
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an input buffer, this indicates the amount of data available for
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reading.
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Since Kernel 5.11, multiple buffers are supported.
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so, it is better to use, instead:
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/sys/bus/iio/devices/iio:deviceX/bufferY/data_available
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