MQX Software SolutionsのトピックRAM requirement for USB device CDC example

RAM requirement for USB device CDC example

Nouchi — Mon, 22 Oct 2012 15:17:43 GMT

Hello,

I would like to know how many RAM is needed by the virtual COM demo (MQX3.8.1), because it works with 32Kb (TWR-51JF), if I try 16Kb (just change ram size in lcf file), I've got an MQX_OUT_OF_MEMORY in USB_Pstn_Init.

What can I change in memory configuration to make work this demo with 16Kb CPU?

Emmanuel

Re: RAM requirement for USB device CDC example

DavidS — Tue, 23 Oct 2012 14:44:09 GMT

Hi Emmanual,

Please look at following document in MQX path:

C:\Freescale\Freescale MQX 3.8\mqx\examples\benchmrk\codesize\Readme.txt

Example reports are in the \results folder and viewable with Browser.

Hope this helps.

Regards,

David

Re: RAM requirement for USB device CDC example

Nouchi — Thu, 25 Oct 2012 06:43:47 GMT

Hi,

Finally, I use Freescale USB stack, which fits my needs.

bye