Devid -

: Ensure the SPI mode (CPOL/CPHA), chip select (CS) control, and clock speed are set correctly according to the device datasheet.

Could you clarify if you are looking for , hardware security protocols , or software programming help? : Ensure the SPI mode (CPOL/CPHA), chip select

: Getting 0x00 or 0xFF instead of the expected ID (e.g., 0xE5 for an ADXL345 accelerometer). : Ensure the SPI mode (CPOL/CPHA)