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CHIP_SELECT (NCS) software on QSPI with SMT32F7

MZobi.1
Associate

Hello,

I would like to use three flash memories in QUADSPI from an STM32F7.

As with a normal SPI link, I have connected three memories to a single QUADSPI port and select each with the respective SLAVE_SELECT (SS) of the memory.

I can easily program one flash memory in QUADSPI with the hardware CHIP_SELECT of the STM32F7, ie with PB6 or PB10.

However I do not succeed when I put a software CHIP_SELECT in QUADSPI.

My question :

Is it possible to control the CHIP_SELECT by software and not only in hardware by QSPI_BK1_NCS ?

I tried to force the CHIP_SELECT software to another pin but could not read the flash memory (the signal from CHIP_SELECT to the oscillator is correct)

Best Regards,

Mike

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