User manual

GHI Electronics,LLC Embedded Master User Manual
Updating Embedded Master Firmware
At power up, a GHI bootstrap and loader take over the processor and validates TinyBooter
stored in FLASH. If TinyBooter was found and was valid, execution is transferred to
TinyBooter, and from there to .NET Micro Framework.
This piece of software is also accessible by user and provides many useful commands that
help updating the Tinybooter. check GHI Loader section for more details.
Updating TinyBooter is not necessary and should not be done unless needed.
TinyBooter update is necessary when upgrading or downgrading from Embedded
Master .NET Micro Framework 2.5 to 3.0 firmwares.
9. GHI Loader
GHI Loader is the initial piece of software that runs on system power up.
At power up, a GHI bootstrap and loader take over the processor and validates TinyBooter
stored in FLASH. If TinyBooter was found and was valid, execution is transferred to
TinyBooter, and from there to .NET Micro Framework.
This software is also accessible by user and provides many useful commands.
9.1. Entering GHI Loader User Interface
1. Connect COM1 from Embedded Master to a any COM port on the PC. If the
development system is used, COM1 is connected to a serial<->USB chipset. The
USB connector X1 needs to be connected to the PC. Same as when loading
firmware or deploying applications.
2. Power up the device.
3. Open terminal program to the port connected to COM1 at 115200. This is COM1 on
Embedded Master and this is completely different from the COM port number you
need to use on the PC.
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