USB CDC on Kinetis K64

[punitkumar]

I'm trying a new baremetal USB CDC project with freescale stack 4.1.1, and after modifying the example project given for K60 MCU, i've got it worked.

But now i want to create a new standalone project by picking up the files from the Stack's Device folder, and it built and run but my PC shows -> 'Device not Recognized'

Do i need to make some modification/customization to the files.

regards

Punit Kumar

[punitkumar]

Also if someone can provide information for get starting Ethernet on K64.

Thanks & Regards

Punit Kumar

[ivadorazinova]

Hi Punit,

please see my answer at the post Re: 100Mbps Ethernet on kinetis K64

Hope this helps.

Iva

[punitkumar · Accepted solution]

Thanks to all for the support specially to isaacavila & BlackNight, i got my USB worked today. The problem is, i need to define LITTLE_ENDIAN in

Can someone compare the performance of usb if the project is RAM built or Flash built, i need to utilize the maximum speed of the USB module.

[patrickphilp]

Make sure the USB descriptor structure contents match the contents of the INF file used to install the driver. If the VID & PID don't match, it won't be able to recognize the device.

[punitkumar]

Thanks for the responses

can any help out from the problems in my existing project,

i've not used PE & just pick and drop files from stack,

now my PC, which detect the USB if i use an existing example, but not with my project,

error shown in device manager - 'Windows has stopped this device because it has reported problems. (Code 43)'.

--

Punit Kumar

[isaacavila]

Hello Punit,

Could you please be so kind to attach your project?

Best Regards,

Isaac

[punitkumar]

isaacavila

How to attach the project code here?

[isaacavila]

Hi Punit,

Select the "use advanced editor" and then "attach" your project in a zip format.

Best Regards,

Isaac

[punitkumar]

hi isaacavila​

mine is not showing advance editor,

tell me your email ID & i'll email you the zip folder

[mjbcswitzerland]

Hi

The error messages don't help much if there are low level problems with USB.

If you are going to do detailed work with USB it is recommended to invest in a USB analyser - the Beagle from Total Phase for example.

Regards

Mark

[PitOn]

See my work project.
USB Device CDC on KSDK PEx components and KDS 3.0 and KSDK 1.2.0 or KSDK 1.3.0 .

[BlackNight]

Hi Punit,

you need to disable the memory protection unit first:

MPU_CESR = 0;

See USB CDC with the FRDM-K64F, finally! | MCU on Eclipse

I hope this helps,

Erich

[punitkumar]

thanks Erich,

have already done this, what to do next

[BlackNight]

You might have a look at that code mentioned in that article: it is based on the 4.1.1 stack and works for me, both bare metal and with RTOS.

Erich

[mjbcswitzerland]

Hi

The following links contain USB-CDC for the K64 that allows 6 USB-CDCs at the same time. The FRDM-K64 supports 5 USB-CDC to UART bridges and the TWR-K64F120M supports 6 (simply program a binary and see it in action).
The operation can be simulated in the K64 simulator (including all USB operation).

Regards

Mark

Kinetis: http://www.utasker.com/kinetis.html

K64: http://www.utasker.com/kinetis/FRDM-K64F.html / http://www.utasker.com/kinetis/TWR-K64F120M.html

For the complete "out-of-the-box" Kinetis experience and faster time to market