1What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_filter_mode_available 2KernelVersion: 6.2 3Contact: linux-iio@vger.kernel.org 4Description: 5 Reading returns a list with the possible filter modes. 6 "sinc4" - Sinc 4. Excellent noise performance. Long 1st 7 conversion time. No natural 50/60Hz rejection. 8 "sinc4+sinc1" - Sinc4 + averaging by 8. Low 1st conversion time. 9 "sinc3" - Sinc3. Moderate 1st conversion time. Good noise 10 performance. 11 "sinc3+rej60" - Sinc3 + 60Hz rejection. At a sampling frequency 12 of 50Hz, achieves simultaneous 50Hz and 60Hz 13 rejection. 14 "sinc3+sinc1" - Sinc3 + averaging by 8. Low 1st conversion time. 15 Best used with a sampling frequency of at least 16 216.19Hz. 17 "sinc3+pf1" - Sinc3 + Post Filter 1. 18 53dB rejection @ 50Hz, 58dB rejection @ 60Hz. 19 "sinc3+pf2" - Sinc3 + Post Filter 2. 20 70dB rejection @ 50Hz, 70dB rejection @ 60Hz. 21 "sinc3+pf3" - Sinc3 + Post Filter 3. 22 99dB rejection @ 50Hz, 103dB rejection @ 60Hz. 23 "sinc3+pf4" - Sinc3 + Post Filter 4. 24 103dB rejection @ 50Hz, 109dB rejection @ 60Hz. 25 26What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_filter_mode 27KernelVersion: 6.2 28Contact: linux-iio@vger.kernel.org 29Description: 30 Set the filter mode of the differential channel. When the filter 31 mode changes, the in_voltageY-voltageZ_sampling_frequency and 32 in_voltageY-voltageZ_sampling_frequency_available attributes 33 might also change to accommodate the new filter mode. 34 If the current sampling frequency is out of range for the new 35 filter mode, the sampling frequency will be changed to the 36 closest valid one. 37