Can't configure USB Clock from ProcessorExpert

[Federico_R]

Hello,

I want to add USB CDC to my custom board with MK60DX256.

I follow this guide http://mcuoneclipse.com/2013/04/27/usb-cdc-with-the-frdm-k20d50m/ but I have a trouble in USB0:Init_USB_OTG.

The problem is into USB_Init in the Module Clock Frequency that remains STOPPED (not 48 MHz).

I attached three pictures that show the clocks configuration.

Could anyone help me?

Thanks

[BlackNight]

From your screenshot, you are in basic, not in Advanced/Expert mode (upper right corner): then the setting shows up:

[BlackNight · Accepted solution]

I had no problems to set it up using CW 10.6 (with update 4). Attached is a test project (I have not run it on hardware!), and the settings work for me.

[Federico_R]

Hi Erick,

I installed CW 10.6 and I make an update.

Now the CPU settings shows USB clock settings.

I think USB_CDC add Virtual COM support but now I realize that isn't true. Isn't it?

Which PEx component I need to add to get Virtual COM functionality?

Thanks for your help!

Federico

[BlackNight]

Hi Frederico,

this one is for K64F, but should pretty much apply for K60 too:

http://mcuoneclipse.com/2014/10/25/usb-cdc-with-the-frdm-k64f-finally/

Erich

[Federico_R]

Hi Erich,

I try different firmware and I noticed that my computer recognize an "Unknown Device".

If I try to update the driver, windows says that the correct driver is already installed and the the Virtual Com doesn't appear.

Which is the problem?

Thank you very much!

Federico

[BlackNight]

Hi Frederico,

are you following the instructions of the readme in the Documentation folder created inside your project by the letter?

Erich

[Federico_R]

Hello Erich,

I solved my problem.

The issue was due to a wrong USB enumeration. I attached my board to an USB HUB and the PC recognized the Virtial COM.

Thanks for your help and compliments for your website. It's very useful and instructive!

Federico

[Federico_R]

Hi Erich,

yes I followed the instruction.

The strange thing is: I create a project (from your original project on Git) that support both MK60DN and MK60DX microcontroller, if I load the firmware on MK60DN my PC recognize the virtual com, but if I switch to MK60DX my PC recognize only an Unknown device.

I attached the project.

Thanks

Federico

[Federico_R]

Thanks Erick!

Now I try to install CW 10.6 with Upadate and I will let you know!

Federico

[Federico_R]

Hello Erick,

I switched to Expert Mode and the PLL/FLL Clock Section appears, but I can see USB Clock Settings.

Can I upgrade my CW to 10.6?

Thanks for your time!

Federico

[BlackNight]

what version are you currently using?

You can download 10.6 and install it side-by-side, so you still have your current version available, just in case.

That^'s actually the way I recommend to switch to a newer version anyway: keep the existing one installed, until your projects are migrated (or you might keep using the older version for your older projects).

Erich

[Jorge_Gonzalez]

Hello Federico_R:

If possible please share your project. That way we can give it a check.

To attach files you have to click "Reply" then "Use advanced editor":

Regards!

Jorge Gonzalez

[Federico_R]

Hello Jorge,

thanks for the reply!

I switched to Expert mode in ProcessorExpert and I can set PLL Clock under (PLL/FLL Clock Section), but the USB clock setting doesn't appear under this section.

In fact, when I debug the project, the CDC_Task return: ERR_BUSOFF; /* USB bus not available yet */

Which is the problem?

I attached my project, create with CodeWarrior 10.5 and the ProcessorExpert developed by Erick Styger.

Thanks

Federico