Product Info

GLOBALSTAR PROPRIETARY AND CONFIDENTIAL INFORMATION
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06/18/20 Subject to Change without Notice P a g e | 72
The AXSEM proprietary programmer connects to the RJ-45 connector on this board for programming the AX50324 ASIC.
4.4.4 Nordic low-level load via JTAG
Using the breakout board above, the Nordic can be programmed and debugged through a compatible JTAG
programmer. Globalstar recommends Segger Studio as the development and debugging environment for this processor.
The Nordic processor can also be programmed via Nordic’s NRF Go Studio application.
4.4.5 ON AX50324 low-level load via AXSEM proprietary programming interface.
The AX50324 processor is programmed via an AXSEM proprietary programming board and the Axsdb proprietary Axsem
debugger. These devices are available from ON Semiconductor: https://www.onsemi.com/support/evaluation-
board/axdbg-2-gevk
4.5 Example CRC calculation routines for serial packets
NOTE: When using the “raw” command to send individual messages, the CRC is OMITTED. The Nordic processor
firmware calculates and appends the correct CRC to the message going to the ASIC processor.
This routine would be used if sending a series of messages in “binary passthrough mode” (“bpm” command).
The following example is written in the C programming language where:
int = 32 bits, short = 16 bits, char = 8 bits