ThingMagic Micro Hardware - Manual (Page 46)

Application Firmware
A D I V I S I O N O F T R I M B L E
Firmware Overview 41
Application Firmware
The application firmware contains the tag protocol code along with all the command
interfaces to set and get system parameters and perform tag operations. The application
firmware is, by default, started automatically upon power up.
Programming the Micro
Applications to control the Micro module and derivative products are written using the
high level MercuryAPI. The MercuryAPI supports Java, .NET and C programming
environments. The MercuryAPI Software Development Kit (SDK) contains sample
applications and source code to help developers get started demoing and developing
functionality. For more information on the MercuryAPI see the MercuryAPI Programmers
Guide and the MercuryAPI SDK, available on the ThingMagic website.
Upgrading the Micro
New features developed for the Micro are made available to existing modules through an
Application Firmware upgrade, along with corresponding updates to the MercuryAPI to
make use of the new features. Firmware upgrades can be applied using the MercuryAPI
to build the functionality into custom applications or using the MercuryAPI SDK demo
utilities.
Verifying Application Firmware Image
The application firmware has an image level Cyclic Redundancy Check (CRC) embedded
in it to protect against corrupted firmware during an upgrade process. (If the upgrade is
unsuccessful, the CRC will not match the contents in flash.) When the boot loader starts
the application FW, it first verifies that the image CRC is correct. If this check fails, then
the boot loader does not start the application firmware and an error is returned.