[avrdude-dev] [patch #7896] DFU FLIPv2 programming support

[Joerg Wunsch]

Update of patch #7896 (project avrdude):

                  Status:                    None => In Progress            
             Assigned to:                    None => joerg_wunsch           

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Follow-up Comment #1:

Thanks for the patch, Kirill!  I just tried it, using an ATmega32U2.

Here are some remarks.  First, if I don't have the target plugged in,
I get:


% ./avrdude -C avrdude.conf -c flip2 -p m32u2 -t

avrdude: Error: No matching USB device found
avrdude: AVR device initialized and ready to accept instructions

Reading |                                                    | 0%
0.00savrdude: error reading signature data for part "ATmega32U2", rc=-1
avrdude: error reading signature data, rc=-1

avrdude done.  Thank you.


I think it should bail out there before proceeding to read the
signature.

Second, after plugging in the controller, I get (on FreeBSD):


% ./avrdude -C avrdude.conf -c flip2 -p m32u2 -t

avrdude: Warning: USB bDeviceClass = 255 (expected 0)
avrdude: Warning: USB bDeviceSubClass = 1 (expected 0)
avrdude: Warning: USB bInterfaceClass = 0 (expected 255)
avrdude: Error: DFU_DNLOAD failed: Unknown error
avrdude: Error: DFU status ERR_WRITE
avrdude: Error: Failed to read 0x0004 bytes at 0x0000
avrdude: AVR device initialized and ready to accept instructions

Reading |                                                    | 0%
0.00savrdude: error reading signature data for part "ATmega32U2", rc=-1
avrdude: error reading signature data, rc=-1

avrdude done.  Thank you.


So, at least for the USB megaAVR devices, something's still wrong.

(Yes, I did add the USB PID of the ATmega32U2 to avrdude.conf before.)

I think, all new files should get *your* copyright, with the current
year, not anybody else's.

For reference, here are the descriptors I can read out from the
device:


  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0200 
  bDeviceClass = 0x00ff 
  bDeviceSubClass = 0x0001 
  bDeviceProtocol = 0x0000 
  bMaxPacketSize0 = 0x0020 
  idVendor = 0x03eb 
  idProduct = 0x2ff0 
  bcdDevice = 0x0000 
  iManufacturer = 0x0001  <ATMEL>
  iProduct = 0x0002  <ATmega32U2 DFU>
  iSerialNumber = 0x0000  <no string>
  bNumConfigurations = 0x0001 

 Configuration index 0

    bLength = 0x0009 
    bDescriptorType = 0x0002 
    wTotalLength = 0x0012 
    bNumInterfaces = 0x0001 
    bConfigurationValue = 0x0001 
    iConfiguration = 0x0000  <no string>
    bmAttributes = 0x0080 
    bMaxPower = 0x0032 

    Interface 0
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0000 
      bInterfaceClass = 0x0000 
      bInterfaceSubClass = 0x0000 
      bInterfaceProtocol = 0x0000 
      iInterface = 0x0000  <no string>



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