AnsweredAssumed Answered

Need USB Mass Storage on FRDM-KL25Z Platform

Question asked by Nick Nax on Feb 10, 2014
Latest reply on Feb 13, 2014 by Butcher

I'm looking for a working example of an USB MSD on the FRDM-KL25Z platform, using CW for MCU v 10.5 and Freescale USB Stack 4.1.1.

 

The bundled example below compiles, but a block write to the device returns a success code (# of bytes written) while subsequent readbacks show that the contents remain unmodified.

 

C:\Freescale\Freescale USB Stack v4.1.1\ProcessorExpert\Examples\Device\MSD\USB_MSD_DEVICE_MKL25Z128_PEx\.cproject

 

I think the example is a bit suspect because it only creates a 1024-byte (2x 512 byte block) disk.  I've tried larger RAM sizes, but the original problem of "pretending to write" remains.

Outcomes