i.MX RT Crossover MCUsのトピックRe: Boot From Flash

Boot From Flash

SpeedyGonzalesss — Fri, 22 Dec 2023 06:51:41 GMT

Hello,

I am using i.MX RT1170 EVK and MCUXpresso.

There are examples of LVGL in the i.MX RT1170 EVK SDK examples. There are 2 flashes on this EVK: Quad Flash and Octal Flash. And the program boots from flash.
But I want to know which flash the program boots from. I couldn't find any explanation or snippet of code.

However, a flash driver was loaded while setting the memory areas.

SpeedyGonzalesss_0-1703227339784.png

Looking at the QSPI expression here, can we say that Quad SPI is used?

I am sharing the attached SDK example as an example. Can you help me decide which Flash is used for boot purposes?

Re: Boot From Flash

mjbcswitzerland — Fri, 22 Dec 2023 18:38:09 GMT

Hi

Unless you have modified the EVK the QSPI is used.

The octal flash can only be used after soldering in some zero ohm resistors (and removing others) as specified on its circuit diagram

"OPTION1: USE QSPI FLASH(Mount R380/R399/ R386/R390/R392/R385,DNP R381/R378/R382/R389/R402/R377/R388/R391)
OPTION2: USE Octal Flash( Mount R381/R378/R382/R389/R402/R377/R388/R391, DNP R380/R399/R386/R390/R392/R385)"

Regards

Mark

Re: Boot From Flash

SpeedyGonzalesss — Mon, 25 Dec 2023 06:24:09 GMT

Thank you!