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What: /sys/devices/platform/ab5500-core.0/ab5500-adc.0/adc0volt
Date: Nov 2011
KernelVersion: 3.0
Contact: Shreshtha Kumar SAHU <shreshthakumar.sahu@stericsson.com>
Description: The adc0volt attribute allows the userspace to read the
voltage of the device connected to the General Purpose
Analog to Digital Converter (GPADC) channel-0. Voltage
conversion from analog to digital happens only when this
attribute is read. GPADC block is present in AB5500 chip
and has input voltage range of 0-1.8 volt for GPADC Ch-0.
It provides result of the converted voltage in 10 bits.
Other GPADC channels attributes may appear in this path
later. For minimum and maximum input voltage range for
each channel please refer to the ST-Ericssons AB5500
datasheet. An example usage of GPADC can be an ALS device
connected to the channel and user space adapts the
LCD backlight brightness based on ambient light value
read from the attribute.
Users: HAL.
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