LPC Microcontrollers中的主题 LPC1857 SPIFI (XIP functionality)

LPC1857 SPIFI (XIP functionality)

lpcware — Wed, 15 Jun 2016 18:20:45 GMT

Content originally posted in LPCWare by nesrine on Mon Feb 23 05:24:04 MST 2015
Hi,
I use the Keil MCB1857 board,
I would to execute my code from SPI flash(SPIFI),my board include S25FL256SAGMFI001 memory.
My question is about the implementation of the execute in place (XIP) functionality in your architecture,because i found anything in the documentations.
Thank you
Nesrine

Re: LPC1857 SPIFI (XIP functionality)

lpcware — Wed, 15 Jun 2016 18:20:46 GMT

Content originally posted in LPCWare by mc on Mon Feb 23 11:40:00 MST 2015
Hi nesrine,
Boot loader and SPIFI library will take care of XIP.
Please set your boot jumper to boot from SPIFI. Erase internal flash and run below example. This example is developed for LPCxpresso IDE.

Please use flash driver from below link.
http://www.lpcware.com/system/files/LPC18_43_SPIFI_8MB_64KB-New.zip

Let us know your feedback.

Re: LPC1857 SPIFI (XIP functionality)

lpcware — Wed, 15 Jun 2016 18:20:47 GMT

Content originally posted in LPCWare by nesrine on Tue Feb 24 08:50:59 MST 2015
Hi,
thank you for the response,
my program work well,but i would know more about the implementation ,
if you use the SDR or the DDR mode?
if you implement the XIP functionnality?
the frequency of the SPIFI (DIVA?) why the use of the DIVA?
The lengh of the ,Cache prefetching?
i have many questions but i found anything in documentation!!
thank you
Nesrine