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AN3927 - MSD enumeration problem: Set Configuration fails!!

Question asked by SP Lee on Feb 20, 2014
Latest reply on Mar 20, 2014 by SP Lee

I am using AN3927 MSD Bootloader with MC9S08JM32, CodeWarrior

 

Keep having Windows Device Manager "Device cannot start" error code 10 problem.

 

Found out that, sometimes MCU does not acknowledge/handshake the SET_CONFIGURATION request. On protocol analyzer, MCU just does not send the handshake packet back to HOST.

 

Why is this so?

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