Slave does not generate the SPI clock, the master does. Were it to become an SPI master, it would have to generate a clock.Can you buffer the clock from the master and pass it along externally to the other device?
So you want it to generate the burst of 8 clocks once it sees it's chip select line go low?I suppose you could turn on a PWM output and then back off again with some assembly level code to do it quick; if your SPI is at 4MHz tho you may not have time.
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