Re: [avr-chat] Difficulty programming attiny13 with AVR dragon

[Joerg Wunsch]

Kevin DuBois <address@hidden> wrote:

> avrdude: usb_open(): cannot read serial number "error sending control
> message: Connection timed out"

Something is fishy with your USB.

> avrdude: usbdev_open(): Found [unnamed product], serno: [unknown]

That alone should make you suspicious.

For a correctly found Dragon, it should look like:

avrdude: stk500v2_dragon_isp_open()
avrdude: usbdev_open(): Found AVRDRAGON, serno: 00A200007BFE
avrdude: usbdev_open(): using read endpoint 0x82
avrdude: jtagmkII_getsync()
avrdude: jtagmkII_getsync(): Sending sign-on command: 
avrdude: jtagmkII_send(): sending 1 bytes

(This is under FreeBSD, but that part of AVRDUDE is completely OS
independant.)

Make sure your lsusb command can find the Dragon correctly, including
serial number and all that.  AVRDUDE is at the mercy of your OS here.

Check all the hardware stuff: cabling, USB hubs, hub power supply.
Try connecting it directly to a host USB port.

-- 
cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)