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9150-0125-01 R-1
9. UNIFIED API MODULES
The Unified API is Globalstar's SDK that incorporates the same API command whether used externally over UART, or through
source code directly. All AT commands rely on documented C APIs that are available to system integrators writing custom
firmware applications. The C layer relies on FreeRTOS as the embedded RTOS.
The Unified API abstracts all hardware, platform-specific, and value-added EDGE features through an abstracted API as shown
below. An event-driven architecture makes it possible to catch global module events at the UAPI or App level, and easily
customize a new application.
Similarly, URCs (Unsolicited Response Codes) can be enabled for each module to allow asynchronous notifications of these
system events through external interfaces, such as UART, allowing an integrator to customize their application from an
external source.
FIGURE 15 - UNIFIED API MODULES
ST150M User Manual
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