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2019
congatec
AG
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6.6
congatec Battery Management Interface
To facilitate the development of battery powered mobile systems based on embedded modules, congatec AG defined an interface for the
exchange of data between a CPU module (using an ACPI operating system) and a Smart Battery system. A system developed according to
the congatec Battery Management Interface Specification can provide the battery management functions supported by an ACPI-capable
operating system (for example, charge state of the battery, information about the battery, alarms or events for certain battery states) without
the need for additional modifications to the system BIOS.
In addtion to the ACPI-Compliant Control Method Battery mentioned above, the latest versions of the conga-JC370 BIOS and board controller
firmware also support LTC1760 battery manager from Linear Technology and a battery only solution (no charger). All three battery solutions are
supported on the I2C bus and the SMBus. This gives the system designer more flexibility when choosing the appropriate battery sub-system.
For more information about this subject visit the congatec website and view the following documents:
•
congatec Battery Management Interface Specification
•
Battery System Design Guide
•
conga-SBM
3
User’s Guide
6.7
API Support (CGOS)
In order to benefit from the above mentioned non-industry standard feature set, congatec provides an API that allows application software
developers to easily integrate all these features into their code. The CGOS API (congatec Operating System Application Programming Interface)
is the congatec proprietary API that is available for all commonly used Operating Systems such as Win32, Win64, Win CE, Linux.
The architecture of the CGOS API driver provides the ability to write application software that runs unmodified on all congatec CPU modules.
All the hardware related code is contained within the congatec embedded BIOS on the module. See section 1.1 of the CGOS API software
developers guide, available on the congatec website.
6.8
Thermal and Voltage Monitoring
The cBC monitors the ambient temperature, input voltage and input current of the conga-JC370. The sensors in the CPU monitor the CPU
temperature.
