1What: /sys/bus/iio/devices/iio:deviceX/ac_excitation_en 2KernelVersion: 3Contact: linux-iio@vger.kernel.org 4Description: 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. 9 10What: /sys/bus/iio/devices/iio:deviceX/bridge_switch_en 11KernelVersion: 12Contact: linux-iio@vger.kernel.org 13Description: 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. 21 22What: /sys/bus/iio/devices/iio:deviceX/in_voltagex_sys_calibration 23KernelVersion: 24Contact: linux-iio@vger.kernel.org 25Description: 26 Initiates the system calibration procedure. This is done on a 27 single channel at a time. Write '1' to start the calibration. 28 29What: /sys/bus/iio/devices/iio:deviceX/in_voltage2-voltage2_shorted_raw 30KernelVersion: 31Contact: linux-iio@vger.kernel.org 32Description: 33 Measure voltage from AIN2 pin connected to AIN(+) 34 and AIN(-) shorted. 35 36What: /sys/bus/iio/devices/iio:deviceX/in_voltagex_sys_calibration_mode_available 37KernelVersion: 38Contact: linux-iio@vger.kernel.org 39Description: 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 45What: /sys/bus/iio/devices/iio:deviceX/in_voltagex_sys_calibration_mode 46KernelVersion: 47Contact: linux-iio@vger.kernel.org 48Description: 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. 52