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how to change USB SD-MSD SDHC to SPI mode

Question asked by sudhakar p on Mar 11, 2016
Latest reply on Mar 28, 2016 by Carlos_Musich


i am using FRDMK64 controller and KDS3.0 and KSDK1.3.0 example. i got USB SD-card mass storage device from KSDK example.straight way its working with SDHC protocol. but i want to implement with SPI how to modify code to USB SD-MSD  with  SPI mode. i saw configuration setting in example code


    #define USE_SDHC_PROTOCOL    (0)

    #define USE_SPI_PROTOCOL     (1)



i changed to SPI_PROTOCOL but its not working. i changed SD card pins connection to SPI pins also. i am sure with hardware connection.  can you give some idea..?



sudhakar p