So you are not a stranger. ![:)]( "Smile")
Some viable results: viewtopic.php?t=375975
Need to make a pretty table: viewtopic.php?p=2260058#p2259809
And more details about that delay: viewtopic.php?p=2259409#p2258079
All spread across too many threads.
Basically, as you go faster with clock you need more read delay on flash signals.
i.e. at 400 MHz divider 4, you need delay of 4
but at start (150 Mhz) it works with delay 2-3, and it might hang (or be unstable) if you set it up at 4 from the very beginning.
So far, I prefer to start with divider 2, delay 2, and adjust it only when changing the clock.
The delay depends also on board, if there's PSRAM (like on Pimoroni board) you need +1 delay than on original Pico 2 board.
Some viable results: viewtopic.php?t=375975
Need to make a pretty table: viewtopic.php?p=2260058#p2259809
And more details about that delay: viewtopic.php?p=2259409#p2258079
All spread across too many threads.
Basically, as you go faster with clock you need more read delay on flash signals.
i.e. at 400 MHz divider 4, you need delay of 4
but at start (150 Mhz) it works with delay 2-3, and it might hang (or be unstable) if you set it up at 4 from the very beginning.
So far, I prefer to start with divider 2, delay 2, and adjust it only when changing the clock.
The delay depends also on board, if there's PSRAM (like on Pimoroni board) you need +1 delay than on original Pico 2 board.
Statistics: Posted by gmx — Thu Oct 17, 2024 10:45 am