LPC Microcontrollers中的主题 LPCUSBLIB Stuck in infinite loop inside Pipe_WaitUntilReady

LPCUSBLIB Stuck in infinite loop inside Pipe_WaitUntilReady

lpcware — Wed, 15 Jun 2016 16:43:50 GMT

Content originally posted in LPCWare by briching on Tue Mar 15 12:41:10 MST 2016
After porting the example contained in "lpcusblib_MassStorageHost" in lpcopen, with debug macro "LPCUSBlib_DEBUG" turned on, my processor gets stuck in an infinite loop inside of Pipe_WaitUntilReady.

My Setup:
Chip: LPC4357
USB Mass Storage on USB1
C++ project (directly compiling in lpcusblib, NO static library dependencies -- issues have been raised in the forums about how the IDE reports syntax errors in the LPCUSBLIB source code, but still compiles)

Debug console output:

Device Attached on port 1

Mass Storage Device Enumerated.
HcdDataTransfer
        .../lpcusblib/Drivers/USB/Core/HCD/EHCI/EHCI.c: 336
        Evaluated HCD_STATUS = 31
HcdGetPipeStatus
        .../lpcusblib/Drivers/USB/Core/HCD/EHCI/EHCI.c: 379
        Evaluated HCD_STATUS = 31
HcdGetPipeStatus... (repeated infinitely)

The HCD_STATUS of value 31 decodes to "HCD_STATUS_PIPEHANDLE_INVALID"

I have absolutely no idea why the pipe handle comes back as invalid. I am using RAM5 as my USBRAM_SECTION which aliases to RamAHB32, and nothing else in my project is using this bank. Has anyone run into a situation like this before and can offer some help?

Re: LPCUSBLIB Stuck in infinite loop inside Pipe_WaitUntilReady

lpcware — Wed, 15 Jun 2016 16:43:51 GMT

Content originally posted in LPCWare by iemc on Thu Apr 28 07:20:18 MST 2016
I ran into the same problem with the LPCUSBlib_MassStorageHost example on a LPC4357 as well. I have not yet found a solution sadly.

In my case I could insert a flash drive into USB1 and read/write files on it. My problem was when I unplugged the flash drive and then re-inserted it. The code would get stuck in an infinite loop as you say.

I've been unable to work on it again until now.

here is a link to my original post: https://www.lpcware.com/content/forum/lpc43xx-usb-host-mass-storage-class-drive-fails-second-time-it-plugged

Re: LPCUSBLIB Stuck in infinite loop inside Pipe_WaitUntilReady

lpcware — Wed, 15 Jun 2016 16:43:51 GMT

Content originally posted in LPCWare by briching on Thu Apr 28 10:43:15 MST 2016
Thanks for the info iemc. I'll update this thread if I find a solution.

Re: LPCUSBLIB Stuck in infinite loop inside Pipe_WaitUntilReady

lpcware — Sun, 19 Jun 2016 01:05:17 GMT

bump