stm32f730 , Quad SPI ,i used to communicate to a device ,need 3bits data width. but how to configure the data shift out on the rising edge of clk and sample the falling edge . like the Stand SPI , we can set CPOL to '0' or '1'?if not to do , pls ...
I know the FPGA can do it ,but i don't famliar with it , so i want to apply on the Mcu . how to Chain 3 SPIs together on one MCU which band as one Master SPI with 3bits data width? or have other such peripheral can do it ，thanks.
