Bulk OUT endpoint (usbFunctionWriteOut)

[miroslav.talasek]

i want use endpoint 2 to writeOut bulk but id doesnt work

i have

Code: Select all

void usbFunctionWriteOut(uchar *data, uchar len){
....

} 

and

Code: Select all

#define USB_CFG_IMPLEMENT_FN_WRITEOUT   1

but lsusb -v return

Code: Select all

Bus 004 Device 100: ID 16c0:3e08
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0         8
  idVendor           0x16c0
  idProduct          0x3e08
  bcdDevice            1.00
  iManufacturer           1 miREC.ta
  iProduct                2 USBLcd
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           18
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
      (Bus Powered)
    MaxPower               40mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           0
      bInterfaceClass         0 (Defined at Interface level)
      bInterfaceSubClass      0
      bInterfaceProtocol      0
      iInterface              0
Device Status:     0x0000
  (Bus Powered)

there is zero endpoints
must i uncomment or change any other in usbconfig.h ?

on host side

Code: Select all

 usb_claim_interface(handle, 0);
char bufferOut[255];
   memset(bufferOut,0xff,0xff);
   usb_bulk_write(
            handle,             // handle obtained with usb_open()
           USB_ENDPOINT_OUT | 2,// identifies endpoint
           bufferOut,             // data buffer
           200,     // legth
           1000
       );

but messages to ENDPOINT_IN 0 works perfectly

[christian]

You need to supply your own configuration descriptor since the default one does not include additional endpoints. See AVR-Doper for an example.