MQX Software SolutionsのトピックMQX USB Host MFS events

MQX USB Host MFS events

Toe — Wed, 23 Apr 2014 15:18:47 GMT

I have a MQX 4.1 project built from the MFS USB example and I'm having a hard time finding out why attach/detach events do not seem to occur properly.

Right now the project will mount a usb storage device ONLY if the device is present when the usb stack is initialized. If the stack is initialized and then a USB stick is inserted the mass device event is never triggered. The event never triggers on the removal of the device either.

Is there something I can look at that may be missing? I assume there's an initialization step I missed either in one of the mqx libraries or in the usb stack. When debugging I can see the host task is running and not starving or running out of stack space.

MCU is 52252 clocked at 60MHz.

Re: MQX USB Host MFS events

soledad — Tue, 29 Apr 2014 22:28:48 GMT

Hi,

Are you using a Freescale board?

Could you please try using the example located at the next path:

C:\Freescale\Freescale_MQX_4_1\usb\host\examples\msd\msd_commands

Please let me know if this helps :smileywink:
Have a great day,
Regards
Sol
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

Re: MQX USB Host MFS events

Toe — Thu, 01 May 2014 14:40:08 GMT

That's not extremely helpful... The example there still relies on the BSP to be correct, fortunately I found what was causing my issue. I was missing the initialization for the pull downs going to the MCU. Interesting that it will work when the stack is initialized with that being incorrect