Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
1. I built code in IAR and use external QSPI flash (IS25LP256D). I want to ask i can read, write or erase with external flash while the processor is running (XIP) on it ??
-- Firstly, your proposal is able to make it, next, it needs to relocate the FlexSPI driver into the internal RAM prior to reading or writing the data section, I'd like to suggest you refer to the polling_transfer (~\boards\evkbimxrt1050\driver_examples\flexspi\nor\polling_transfer) in the SDK library.
2. ROM APIs is available on i.MXRT1050 ? Have document explant detail about it?
-- No, the i.MXRT1050 doesn't support the ROM API feature.
Have a great day,
TIC
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