fl_connect() fail problem?

[porsche]

hi hackers:

The system can be boot from spi flash.

I want to upgrade images in the flash, so I follow the tool guide demo code.
But I found fl_connect() always fails, always return nonzero. I check the bus using logic-analyzer.
The XMOS first send hex code AB to wakeup SPI flash.
Then send 9F command to read ID. And SPI give 1F 43 00 00 code. Those code match atmel AT25DF010 spec.
But 9F command send 4~5 times, it is strange!

in this condition, what cause fl_connect() to fail?

[davelacey]

Only a few flash chips are supported by the library by default (see https://www.xmos.com/list-flash-devices ... ?support=1) . The AT25DF010 isn't in that list so libflash won't detect it. You have to add your own spec of the chip in your code (see https://www.xmos.com/add-support-new-fl ... ?support=1).

Dave

[porsche]

hi Hacker:
Sorry, I check my flash type again, it's at25df021.
I think xmos support it.

[Bianco]

There is a N (No) behind at25df021 on this page, meaning that it isn't supported by default by libflash. So you will still have to add your own specification like dave pointed out.

[porsche]

hi Hacker:
I am appreciated for your guide.
The libflash can work.
Thank you!