SLAU292C Datasheet, PDF (42/102 Pages) Texas Instruments – eZ430-Chronos™ Development Tool

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After invoking the wireless update (rFbSL), the watch tries to link to a listening RF access point and start
the update procedure. If the link is successful, the watch downloads the RAM based updater into the RAM
of the CC430. Once finished, this software then tries to link again with the RF access point to download
the actual update image. If this link is successful, a mass flash erase is performed, which erases all the
main memory flash (0x8000 to 0xFFFF). It then start receiving all the data packets and writes them to
flash, checking if each word was written successfully. If the link is not successful, the watch generates a
reset to restart the user application. During the download of the update image, a percentage indicator
appears on the watch. "dOnE" appears and a reset is generated to start the new user application that has
just been written to flash.
A detailed flow of the update software on the watch and the USB access point can be found in Figure 3-13
and Figure 3-14.
Figure 3-13. Flow Chart of Wireless Updater on Access Point
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eZ430-Chronos Software
SLAU292C – November 2009 – Revised December 2010
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