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Altera_Forum's avatar
Altera_Forum
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18 years ago

Remote Upgrade via UART on Cyclone III

I've created a daughter card that connects the RS232 transceiver to the HDMI interface on the Cyclone III starter board. The production design will require Remote Upgrade via the serial port. The ...
Altera_Forum's avatar
Altera_Forum
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18 years ago

The PFL Megafunction is useless when not operated through JTAG. You have to provide the flash programming function in your application. I assume, that the UART and flash related complex operations can be most easily performed in NIOS II code.

As far as I see, Altera hasn't remote update tools that are utilizing other interfaces than JTAG. So you have to define a download protocol and create a download application. Of course common binary file transfer protocols as X/Y/ZMODEM or hex-coded files can be used.

Regarding your second question, I assume that the Remote Update Megafunction should be able to perform the said reset. But UART upgrade performed in factory image implies that it contains a NIOS II design to serve the UART.