topic Re: Use a SPIFI as a general SPI in Wireless MCU

Use a SPIFI as a general SPI

yoshiyukiokada — Fri, 20 Sep 2019 01:58:02 GMT

Have any of you used a SPIFI as a general SPI to communicate with external devices (such as EEPROM)?

I'm checking a spec of QN9080, however the number of SPI is not sufficient. Therefore, I'm checking the spec of SPIFI.

According to the UM, SPIFI supports two operational modes which are Memory mode and Command mode. The command mode is a mode whereby the user can manually construct command sequences for the flash. Therefore, I think I can use SPIFI as a general SPI by using the command mode.

Could you please advise me on this...

Best regards,

Yoshi

Re: Use a SPIFI as a general SPI

ZhangJennie — Fri, 20 Sep 2019 07:26:29 GMT

Hi Yoshiyuki Okada ,

I am confused. Your question is in LPC space, but you mentioned QN9080.

Please confirm your chip part number you have problem with. Thanks a lot.

Have a nice day,

Jun Zhang

Re: Use a SPIFI as a general SPI

yoshiyukiokada — Fri, 20 Sep 2019 07:37:57 GMT

Hi Zhang,

Thank you for your comment. I've changed the space from LPC to Wireless connectivity.

Re: Use a SPIFI as a general SPI

stephanie_m — Mon, 23 Sep 2019 15:50:55 GMT

Hello,

The SPIFI software library with the SPIFI API is available on www.nxp.com.

Could you please check this links?

MCUXpresso SDK API Reference Manual: SPIFI: SPIFI flash interface driver

LPC SPIFI Peripheral | NXP

Still, I don't believe that those commands will come in handy to make them work as SPI.

How many SPi do you need? Is there a specific reason why you do not use the available CSS ?

Regards,
Estephania

Re: Use a SPIFI as a general SPI

yoshiyukiokada — Wed, 25 Sep 2019 05:14:09 GMT

Thank you Wstephania,

I've checked the API RM, however it may not help SPIFI work as a general SPI.

Thank you again and please close this topic.