topic Re: FRDM-K64 PEx MSD in Processor Expert Software

FRDM-K64 PEx MSD

oaf — Mon, 04 May 2015 11:28:42 GMT

I'm in the process of try to make an USB MSD device on a FRDM-K64F. According to the steps in 'Processor Expert Kinetis SDK USB Stack Integration User Guide' it should be a walk in the park, but for the moment it's more like a walk in the dessert, for weeks without water.

What I've done is to make a PEx project and adding the fsl_usb_device_msd_class. PLL set to 48MHz and change the VID/PID from 0/0 generated (is this correct???) to 15a2/200 which is taken from the MSD example located in the KSDK installation.

1. Has anyone got this to work?

2. I thought that the PEx was to make it easy to create/configure complex projects but why is all the examples without PEx?

My project is enclosed, if a kind soul should feel for giving some advice, I'm exhausted by all this trouble with what I thought would be simple....

Original Attachment has been moved to: CDC.zip

Re: FRDM-K64 PEx MSD

jiri_rezler — Mon, 04 May 2015 15:11:07 GMT

Hello,

I checked your attached project.

I think that problem is in USB module access to FLASH area memory (USB descriptors are stored in FLASH memory)

=> USB module access to FLASH memory must be enabled in a FMC device. (Init_FMC component is possible to use for FMC device configuration, see "USB stack Processor Expert integration documentation", chapter 3).

Best Regards,

Jiri Rezler

Re: FRDM-K64 PEx MSD

oaf — Wed, 06 May 2015 12:19:18 GMT

Hi,

You are right, I've forgot to add the Init_FMC device.

A question (to the KSDK guys) the PEx do some kind of validation, why is this not among them? It's a simple question, if USB is not allowed to access the flash it will not work, so it should be mandatory,

most prefered added as a dependant bean....

Re: FRDM-K64 PEx MSD

gionny — Mon, 22 Jun 2015 15:23:46 GMT

Hi!

Could you share the corrected project?

Thank you very much

Gionatha