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Control
General Purpose Input/Output is a flexible parallel interface
that allows a variety of custom connections. It allows users
to monitor the level of signal input or set the output status to
switch on/off a device. Our API also provides Programmable
GPIO, which allows developers to dynamically set the GPIO
GPIO
input or output status.
SMBus is the System Management Bus defined by Intel
Corporation in 1995. It is used in personal computers and
servers for low-speed system management communications.
The SMBus API allows a developer to interface a embedded
system environment and transfer serial messages using the
SMBus protocols, allowing multiple simultaneous device
SMBus
control.
I
2
C is a bi-directional two wire bus that was developed by
Philips for use in their televisions in the 1980s.
2
The I
C API allows a developer to interface with an embedded
system environment and transfer serial messages using the I
protocols, allowing multiple simultaneous device control.
I
2
C
Display
The Brightness Control API allows a developer to interface with
an embedded device to easily control brightness.
Brightness
Control
The Backlight API allows a developer to control the backlight
(screen) on/off in an embedded device.
Backlight
4.4
Advantech Software Utilities
Advantech also provides value-add utilities to make it easier for our customer to cre-
ate their own unique and innovative systems. For more details about how to get and
use these utilities, please contact Advantech.
Monitor
A watchdog timer (WDT) is a device that performs a specific
operation after a certain period of time if something goes wrong
and the system does not recover on its own.
A watchdog timer can be programmed to perform a warm boot
(restarting the system) after a certain number of seconds.
Watchdog
®
The Hardware Monitor (HWM) API is a system health
supervision API that inspects certain condition indexes, such as
fan speed, temperature and voltage.
Hardware
Monitor
The Hardware Control API allows developers to set the PWM
(Pulse Width Modulation) value to adjust fan speed or other
2
C
devices; it can also be used to adjust the LCD brightness.
Hardware
Control
Power Saving
Make use of Intel SpeedStep technology to reduce power power
consumption. The system will automatically adjust the CPU
Speed depending on system loading.
CPU Speed
Refers to a series of methods for reducing power consumption in
computers by lowering the clock frequency. These APIs allow the
user to lower the clock from 87.5% to 12.5%.
System
Throttling
37
SOM-3565 User Manual
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