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FRDM 22F as USB host for MSD

Question asked by Cecylia Wati on Mar 28, 2017
Latest reply on Mar 29, 2017 by Cecylia Wati

Hi there,


I'm trying to run either of the following example:


I use the eval board FRDM K22F 120.  I could build and load the software after building all the necessary libraries:

C:\Freescale\Freescale_MQX_4_1\mqx\build\iar\bsp_frdmk22f120m (and psp)



After loading, I connect the "Power Open SDA Debug micro USB" (the mini USB port closer to the side) to my PC and I could see the printf printed via serial port 115200 baudrate.  Then I plug in a dual-drive USB (that has been formatted as FAT32) into the K22F micro USB (the mini USB port in the middle).  But the Freedom doesn't recognize it.  No interrupt whatsoever seems to be generated.


I wonder if someone could help me, or point to the clearer documentation for this example project.  After reading some other posts for other boards I have some starting question such as:
1) Should I connect some jumper somewhere in the eval board before expecting this to work?
2) Do I need a "Micro USB OTG adapter" before plugging in? (At least the pdf here mentions I should use this adapter USB Host Project with KSDK 1.3 and Processor Expert )