CC3220SF-LAUNCHXL: can cc3220sf work without extend memory or not?

Shamil Farsiev

Part Number: CC3220SF-LAUNCHXL
Other Parts Discussed in Thread: CC3220SF

I took code from example "power measurment" to write own code, and i don't understand one moment: can cc3220sf work without extend memory or not?

Because? if i comment Board_initSPI(); it doesn't work.

I need to remember AP which is connect by WPS and wake up chip every 60sec and other time will in hibernate.

The device will be include cc3220sf only.

over 7 years ago

0 Jan D over 7 years ago

Guru 79905 points

Hi,

External SPI flash is mandatory for function of CC3220SF chip.

Jan

0 Shamil Farsiev over 7 years ago in reply to Jan D

Expert 1515 points

but... it can't to be...
no cases to work withaout external flash? why cc3220sf is need internal 1Mb flash???

0 Jan D over 7 years ago in reply to Shamil Farsiev

Guru 79905 points

Hi,

External flash is used by NWP (WiFi compressor). It use this memory to store patches for NWP firmware, use it for own temporary/system files and network configuration, etc. Internal flash in chip is used for code executing.

Jan

0 Shamil Farsiev over 7 years ago in reply to Jan D

Expert 1515 points

you have mistake in datasheet swas035a page 67 and 68.
in BOM on p.68 U2 and U1 are replaced.

ok. guys, is this real that cc3220sf (!!SF!!) need external memory to remember AP SSID and password (or AP info if uses WPS)?

0 Shamil Farsiev over 7 years ago in reply to Jan D

Expert 1515 points

can i save wifi info in that memory?

0 Jan D over 7 years ago in reply to Shamil Farsiev

Guru 79905 points

Hi,

You cannot use CC3220SF without external SPI flash.

What do you mean by this - "can i save wifi info in that memory?". External SPI flash sFlash you can use for storing your own files via sl_ filesystem API.

Jan

0 Shamil Farsiev over 7 years ago in reply to Jan D

Expert 1515 points

it mean that i want use cc3220sf WITHOUT any external memory. only one chip. ONE!
when i read docs i understand that 1MB Flash is for wifi info to...
it is vary bad...

0 Hnz over 7 years ago in reply to Shamil Farsiev

Guru 39650 points

Hi,

Internal XIP flash is separated from NWP and from this reason cannot be used as NWP storage. Reasons for this architecture is many including security and write endurance.

I don't think that in CC3220SF documentation is written somewhere, that CC3220SF can be used without external flash chip.

Jan

0 Shamil Farsiev over 7 years ago in reply to Hnz

Expert 1515 points

thanks a lot! I am going to redraw pcb...

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CC3220SF-LAUNCHXL: can cc3220sf work without extend memory or not?