K60 USB device code not working

Ruds — Mon, 07 May 2012 13:30:21 GMT

Hi all,

I have downloaded the USB device code provided by freescale developers to my Cortex M4 K60 board where i have not used any external pullups and MAX3353EEUE IC for the circuit,

i made few changes in the code, those are

1. Disabled weak pull downs ==> USB0_USBCTRL &= ~0x40;(Because DP line was detecting its Voltage up to +1.2V only) in USB.C

2. sellected Clock source as FLL insted of PLL in USB.H

3.defined NO_PLL_INIT = 1 in sysinit.C

my problems are

1.after running the program its contineously displays "Enter USB Reset handler"

please help me to solve this problem....

Thank you so much

Re: K60 USB device code not working

bugs — Wed, 09 May 2012 01:24:57 GMT

We never get the USB working with FLL. you'd better use PEE mode.

Even don't try to use internal clock for UART, the baudrate difference is too big.

topic K60 USB device code not working in Kinetis Microcontrollers

K60 USB device code not working

Re: K60 USB device code not working