Approach Sensor - Huawei U8860 Maintenance Manual

U8860
Maintenance Manual

9.4.16 Approach Sensor

Signal
I2C_SCL_HW
I2C_SDA_HW
PRO_INT
The approach sensor has two functions. One is for screen brightness adjustment. The other is
for misoperation prevention. If you select automatic adjustment, the system will enable the
approach sensor's environment light detection function to detect the brightness of the
environment light, and then adjust the screen brightness accordingly. The approach sensor
realizes the approach status of the phone and other objects depending on the internal infrared
sensor. If the approach status achieves a certain threshold, the system will shut down the
screen forcibly to prevent it from misoperation. The I2C bus controls the approach sensor
components and data transmission. The interrupt pin provides the interrupt signal.
The approach's internal structure is shown in the following figure.
Issue 1.0 (2011-11-14)
Description
I2C bus
Three-in-one interrupt signal
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