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JM128 USB Bootloader does not enumerate on Mac OS X

Question asked by rsdio on Jun 6, 2015
Latest reply on Jun 15, 2015 by Brian Willoughby

Is the ColdFire v1 JM128 part actively supported by freescale? Who would I talk to about getting a bug fix released for the JM128 USB Bootloader example (AN3748)?


I debugged the firmware and found that the Mac is issuing a GET CONFIGURATION request after SET CONFIGURATION. I fixed the problem by adding only 3 or 4 lines of code. I would like to submit this to someone at freescale who can assure me that the change will actually be distributed as part of a revised AN3748.


p.s. I also wrote a quick Mac OS X program that will update the firmware on a JM128 part running the USB Bootloader. I do not expect freescale to add an entirely new program for a feature like this. It's really just that I want the bug in the firmware fixed for everyone.


Brian Willoughby

Sound Consulting