SLAU292C Datasheet, PDF (31/102 Pages) Texas Instruments – eZ430-Chronos™ Development Tool

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eZ430-Chronos Control Center PC Software
3.3.5 Wireless Update
This mode allows updating the firmware of the eZ430-Chronos watch wirelessly, without disassembling it.
Update procedure:
1. Select CC430 flash image (.txt file) by clicking on "Browse...". Example images for the sports watch
software and the data logger application are located for Windows in C:\Program Files\Texas
Instruments\eZ430-Chronos\Recovery\eZ430-Chronos Watch\Applications and for Linux in
/home/<user name>/Texas Instruments/eZ430-Chronos/Recovery/eZ430-Chronos Watch/Applications.
NOTE: Ensure selecting the correct version of the flash images. If the wrong frequency is selected,
no wireless communication is possible anymore. In that case, the watch must be updated
using the eZ430 debug interface.
Only transfer flash images to the watch, which allow invoking the updater software on the
watch.
The file to be downloaded to the watch must be in TI-TXT format to work with this update
procedure. This new firmware must reside within the main memory flash (0x8000 to
0xFFFF), otherwise the update procedure fails due to boundary checks on the watch side.
2. Activate the update mechanism on the PC by clicking on "Update eZ430-Chronos Watch". The Control
Center status line displays "Access point started. Now start watch in rFbSL mode" when the PC is
ready.
3. Select "rFbSL" on the eZ430-Chronos watch by pushing the "#" button
4. Initiate update by pushing the "DOWN" button
5. After a short moment, the update is started
At the beginning of the update the LCD shows "rAM" for a few seconds. During this time, the actual
updater software is downloaded from the PC to the RAM of the CC430 on the watch. This program
contains all memory write and LCD routines. Once this transfer was finished, the code is executed
from RAM. At this point, the download of the actual firmware file is started. The LCD shows the
progress in percent on the upper LCD line. Once the transfer was complete successfully, a reset starts
the software on the watch (see Section 3.6.3).
NOTE: If the update fails, it can be activated again by pushing the "DOWN" button again on the
eZ430-Chronos watch, given that the wireless update is active in the eZ430-Chronos Control
Center.
SLAU292C – November 2009 – Revised December 2010
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