1 What: /sys/bus/iio/devices/iio:deviceX/ac_excitation_en 2 KernelVersion: 3 Contact: linux-iio@vger.kernel.org 4 Description: 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 10 What: /sys/bus/iio/devices/iio:deviceX/bridge_switch_en 11 KernelVersion: 12 Contact: linux-iio@vger.kernel.org 13 Description: 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 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 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 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.
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