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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