topic Re: Getting started with USB and MCF52259 in ColdFire/68K Microcontrollers and Processors

Getting started with USB and MCF52259

akatran — Thu, 18 Aug 2016 11:11:32 GMT

Hello all!

How to get start with USB on the MCF52259 as a device?

The reference manual does not make clear how to use the USB module of the uC and the processor expert all that can do is the initialization sequence.

I have understood the USB protocol and the initialization sequence with the descriptors but I have trouble setting up the BDT.

Can anyone help?

Thank you in advance!

miduo — Tue, 13 Sep 2016 06:09:27 GMT

Hi,

For USB device application, we provide MQX USB device stack. Please find more detail information from below post:

akatran — Thu, 03 Nov 2016 17:27:01 GMT

Dear Li,

what if I don't want to use the MQX USB device stack?

akatran — Thu, 03 Nov 2016 17:49:45 GMT

I have found the initialization sequence and almost how to read from and write to the USB module but I have a question about the DATA0 and DATA1.

Does the DATA0 corresponds to the first buffer (ODD) in the BDT for a specific endpoint and DATA1 to the second buffer (EVEN)?

akatran — Thu, 03 Nov 2016 17:52:26 GMT

Actually the other way around, DATA0 for even buffer and DATA1 for ODD?

Sorry, my mistake!