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Altera_Forum's avatar
Altera_Forum
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16 years ago

Remote Update Component: Reading problems

Hello, I am trying to implement a (hopefully failsafe) remote update for a Cyclone III based board but have problems reading the registers of the remote update component. I've managed...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

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I thought, I could read 0x00 to see if I am currently using the

user (10/11) or factory (00) configuration.

And 0x1C (the 7th word) should yield the reboot trigger source

so 0x1 would be a scheduled reboot (see p.45 of ug_altremote.pdf),

0x10 a power up reboot and the rest would be errors...

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The reboot trigger source is the 7th parameter, but I don't know where you get 0x1C from. To read the previous reboot trigger, I believe you should be reading from address 0x0F (read_source = 01, param = 111).

For example:

IORD(CYCLONEIII_BASE, 0x0F)