projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b73b93a2 MC |
1 | What: /sys/bus/iio/devices/iio:deviceX/ac_excitation_en |
| 2 | KernelVersion: | |
| 3 | Contact: linux-iio@vger.kernel.org | |
| 4 | Description: | |
| 7e4d7593 AT |
5 | This attribute, if available, is used to enable the AC |
| 6 | excitation mode found on some converters. In ac excitation mode, | |
| 7 | the polarity of the excitation voltage is reversed on | |
| 8 | alternate cycles, to eliminate DC errors. | |
| b73b93a2 MC |
9 | |
| 10 | What: /sys/bus/iio/devices/iio:deviceX/bridge_switch_en | |
| 11 | KernelVersion: | |
| 12 | Contact: linux-iio@vger.kernel.org | |
| 13 | Description: | |
| 7e4d7593 AT |
14 | This attribute, if available, is used to close or open the |
| 15 | bridge power down switch found on some converters. | |
| 16 | In bridge applications, such as strain gauges and load cells, | |
| 17 | the bridge itself consumes the majority of the current in the | |
| 18 | system. To minimize the current consumption of the system, | |
| 19 | the bridge can be disconnected (when it is not being used | |
| 20 | using the bridge_switch_en attribute. | |
| 42776c14 MC |
21 | |
| 22 | What: /sys/bus/iio/devices/iio:deviceX/in_voltagex_sys_calibration | |
| 23 | KernelVersion: | |
| 24 | Contact: linux-iio@vger.kernel.org | |
| 25 | Description: | |
| 26 | Initiates the system calibration procedure. This is done on a | |
| 27 | single channel at a time. Write '1' to start the calibration. | |
| 28 | ||
| 7e4d7593 AT |
29 | What: /sys/bus/iio/devices/iio:deviceX/in_voltage2-voltage2_shorted_raw |
| 30 | KernelVersion: | |
| 31 | Contact: linux-iio@vger.kernel.org | |
| 32 | Description: | |
| 33 | Measure voltage from AIN2 pin connected to AIN(+) | |
| 34 | and AIN(-) shorted. | |
| 35 | ||
| 42776c14 MC |
36 | What: /sys/bus/iio/devices/iio:deviceX/in_voltagex_sys_calibration_mode_available |
| 37 | KernelVersion: | |
| 38 | Contact: linux-iio@vger.kernel.org | |
| 39 | Description: | |
| 40 | Reading returns a list with the possible calibration modes. | |
| 41 | There are two available options: | |
| 42 | "zero_scale" - calibrate to zero scale | |
| 43 | "full_scale" - calibrate to full scale | |
| 44 | ||
| 45 | What: /sys/bus/iio/devices/iio:deviceX/in_voltagex_sys_calibration_mode | |
| 46 | KernelVersion: | |
| 47 | Contact: linux-iio@vger.kernel.org | |
| 48 | Description: | |
| 49 | Sets up the calibration mode used in the system calibration | |
| 50 | procedure. Reading returns the current calibration mode. | |
| 51 | Writing sets the system calibration mode. |