Virtual Com example problem

[hubertmelchert]

I'm trying to run virtual com example on TWR70. I'm using IAR and Freescale MQX 3.8. The program seems to run without problems. On my PC i can see unknown USB-SERIAL device. The problem is that no matter which .inf file I try system ignores it. Same thing happens on Win7 and WinXP. What am I doing wrong ?

[soledad · Accepted solution]

Hello Hubert,

Please check the below threads and let me know if this helps,

Questions about "virtual_com" USB CDC driver in MQX 3.6 & under CW10

CDC on K60

Have a great day,
Sol

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[hubertmelchert]

That helped me to install drivers. Now there is another problem. I can't open serial port that show up in system. While debugging an example i noticed that the program can't go through enumeration process. Any idea why ? I'm using example from MQX 3.8 directory without any changes.

[soledad]

Hello Hubert,

Could you please add a screenshot of this issue??

Have a nice day!

Sol

[hubertmelchert]

while (TRUE)

    {

        /* call the periodic task function */    

        USB_CDC_Periodic_Task();         

       /*check whether enumeration is complete or not */

        if((start_app==TRUE) && (start_transactions==TRUE))

        {      

            Virtual_Com_App();     //Virtual_Com_App() can't be executed because start_app and start_transactions ale FALSE

        }          

    }/* Endwhile */ 

}