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