i.MX Processors中的主题 Slow down access to quad SPI flash

Slow down access to quad SPI flash

BCVegas — Wed, 19 Oct 2022 12:18:31 GMT

I have a proto board with mismatched trace lengths between the processor and SPI flash memory, which is causing timing problems. Is it possible to slow down the SPI interface in mcuxpresso to a speed to allow programming and access?

Re: Slow down access to quad SPI flash

Hui_Ma — Tue, 25 Oct 2022 08:26:33 GMT

Hi,

Yes, customer can slow down the SPI Flash serial clock.

Just using SDK provided demo <flexspi_hyper_flash_polling_transfer>, the <app.h> has below function to initialise FlexSPI clock:

static inline void flexspi_clock_init(void)

Thanks for the attention.

Mike