FIX: Enable pull-down resistor in SCK pinInit parameters:CPOL=0 CPHA =0, so SCK level should be idling at LOW level.Software NSSHalf-Duplex, master modeSoftware: CubeIDE 1.9, CubeMX 6.5.0Device: STM32F411CEIssue:Regardless of the clock config, SCK i...