Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

IORD_ALTERA_AVALON_PIO_DATA to slow?

Hi, I'm trying to capture samples from an A/D Converter and streaming them onto a PC via an ethernet connection. I've extended the triple speed ethernet design example from the Nios II v9.1 instal...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

If you are trying to check your ADC I'd definitely read a block to an array, then copy that out somehow.

The sprintf() is probably several 100 clocks - if not several 1000, especially if you haven't ensured that everything is compiled with -O2 or -O3.

The IORW() itself is probably 2 (depends on the number of wait states in your ADC slave) .