Control 5 SPI devices with the STM32F722RET6

[raspdroid]

Hello,

It's possible to control 5 SPI devices with the STM32F722RET6? LQFP-64

Best regards

[Tesla DeLorean]

Do they actually need unique interfaces?

Some SPI can use a GPIO as CS (Chip Select), and disconnect MISO when inactive.

You might also be able to use a 3-to-8 decoder to save pins wrt CS for multiple devices.

You could walk the datasheet and see if you can instantiate 5 separate SPI, or use CubeMX.

[raspdroid]

Hello,

In one I can use UART.

But in the others I need to use SPI.

I have two SPI sensor mems and one dual/quad SPI and QPI flash memory and one SPI OSD.

Can I use any pin for the SS/CS selector chip?

[Tesla DeLorean]

QSPI has fixed/committed pins for NCS, common CLK between Bank1/Bank2

64-pin is quite limiting

[raspdroid]

Good morning,

Thanks for the replies,

So I'm going to use so:

SPI1 for the two sensor mems and two gpio for the CS#

SPI2 for the SPI flash memory

SPI3 for the OSD

BR