MQX 3.4 USB Device stack CDC Class USB_APP_DATA_RECEIVED event issue

siddu — Wed, 10 Feb 2010 20:35:54 GMT

Hi,

I am using the sample example from MQX 3.4 version.

These are my observations:

1.When I send data using Hyperterminal, device sending back the same character.

2.I developed PC application which sends more than one character.This case always I am getting data size as( dp_rcv->data_size) 1.

When PC appliction sends data bytes, USB Device stack is generating USB_APP_DATA_RECEIVED event but with data size (dp_rcv->data_size) = 1

This code snippet is from function void USB_Notif_Callback(uint_8 event_type,void* val,pointer arg)(virtual_com.c)

else if((event_type == USB_APP_DATA_RECEIVED)&&
                                              (start_transactions == TRUE))
        {

            uint_32 BytesToBeCopied;
            APP_DATA_STRUCT* dp_rcv;
            dp_rcv = (APP_DATA_STRUCT*)val;

            BytesToBeCopied = dp_rcv->data_size;
            for(index = 0; index<BytesToBeCopied ; index++)
            {

              g_curr_recv_buf[index]= dp_rcv->data_ptr[index];

            }

                        g_recv_size = index;
        }

Regards,

Subhashini

Re: MQX 3.4 USB Device stack CDC Class USB_APP_DATA_RECEIVED event issue

JuroV — Fri, 26 Feb 2010 00:19:58 GMT

Hi siddu,

can you please specify details (version of MQX, version of CodeWarrior, target used)?

Here, for example: MQX 3.5.1, m52277evb, CW7.2, usb/device/examples/virtual_com, Ext RAM Debug target - works.

MQX Software SolutionsのトピックRe: MQX 3.4 USB Device stack CDC Class USB_APP_DATA_RECEIVED event issue

MQX 3.4 USB Device stack CDC Class USB_APP_DATA_RECEIVED event issue

Re: MQX 3.4 USB Device stack CDC Class USB_APP_DATA_RECEIVED event issue