For CPHA=0, data are captured on the clock's rising edge (low→high transition) and data is output on a falling edge (high→low clock transition).
For CPHA=1, data are captured on the clock's falling edge and data is output on a rising edge.
(the screenshot below is for the fourth transmitted byte = 0x3 = 0000 0011)
Hello. Today I'm debugging SPI on STM32 with:
But the program shows me that CPHA is 1 (see the screenshot). I'm not an SPI expert but it seems to me that CPHA is actually 0 here, not 1.
I'm assuming CPHA = 0 means "capture value on the rising edge: https://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus
(the screenshot below is for the fourth transmitted byte = 0x3 = 0000 0011)