| What: /sys/bus/iio/devices/iio:deviceX/in_voltage-voltage_filter_mode_available |
| KernelVersion: 6.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Reading returns a list with the possible filter modes. |
| |
| * "sinc4" - Sinc 4. Excellent noise performance. Long |
| 1st conversion time. No natural 50/60Hz rejection. |
| |
| * "sinc4+sinc1" - Sinc4 + averaging by 8. Low 1st conversion |
| time. |
| |
| * "sinc3" - Sinc3. Moderate 1st conversion time. |
| Good noise performance. |
| |
| * "sinc3+rej60" - Sinc3 + 60Hz rejection. At a sampling |
| frequency of 50Hz, achieves simultaneous 50Hz and 60Hz |
| rejection. |
| |
| * "sinc3+sinc1" - Sinc3 + averaging by 8. Low 1st conversion |
| time. Best used with a sampling frequency of at least |
| 216.19Hz. |
| |
| * "sinc3+pf1" - Sinc3 + Post Filter 1. 53dB rejection @ |
| 50Hz, 58dB rejection @ 60Hz. |
| |
| * "sinc3+pf2" - Sinc3 + Post Filter 2. 70dB rejection @ |
| 50Hz, 70dB rejection @ 60Hz. |
| |
| * "sinc3+pf3" - Sinc3 + Post Filter 3. 99dB rejection @ |
| 50Hz, 103dB rejection @ 60Hz. |
| |
| * "sinc3+pf4" - Sinc3 + Post Filter 4. 103dB rejection @ |
| 50Hz, 109dB rejection @ 60Hz. |
| |
| What: /sys/bus/iio/devices/iio:deviceX/in_voltageY-voltageZ_filter_mode |
| KernelVersion: 6.2 |
| Contact: linux-iio@vger.kernel.org |
| Description: |
| Set the filter mode of the differential channel. When the filter |
| mode changes, the in_voltageY-voltageZ_sampling_frequency and |
| in_voltageY-voltageZ_sampling_frequency_available attributes |
| might also change to accommodate the new filter mode. |
| If the current sampling frequency is out of range for the new |
| filter mode, the sampling frequency will be changed to the |
| closest valid one. |
