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SPI receive data from external ADC on STM32F4

Question asked by anton.bogdan on Dec 29, 2017
Latest reply on Dec 29, 2017 by Jan Waclawek



i am working on a design which uses a stm32f427 device, and 3 external adc chips.


The ADC chips have 3 pins, SDO, SCK and CS.


The SDO,SCK wil be shared from the STM32F4 with all 3 chips,  the 3 chip select signals will be managed independent by separate gpio port.


But i was wondering, i am quessing my SPI should be configured as SPI_Direction_1Line_Rx ?



When pooling down the selected CS device, this starts to send data 

How is the generation of the clock SCK managed?