AVR Studio 4 is old so I downloaded the 6.1 beta and installed it.
#ATMEL DRAGON BOARD UPDATE#
The update worked (at firmware version 6.16 now) but it still doesn’t work natively on OSX (same issues) and it also doesn’t seem to work in AVR Studio. I thought this was maybe something to do with the firmware version on Dragon so I booted up my virtual XP instance and ran AVR Studio 4 to update the Dragon’s firmware.
Maybe it’s something with VirtualBox’s USB drivers, but avrdude 5.11 running natively on OSX reports various forms ofĪvrdude: usb_fill_buf(): usb_bulk_read() error Broken pipeĪvrdude: jtagmkII_recv(): Timeout receiving packetĪvrdude: stk500v2_jtagmkII_recv(): error in jtagmkII_recv()Īnd usbdev_send(): wrote -32 out of 15 bytes, err = Broken pipe when it does see target power. This because the AVR Dragon must read the target voltage. the 5V from the VCC header must be applied to either pin 2 on the ISP header or pin 4 on the JTAG header. Update I see it also mentioned on which comes up often in google searches for AVRs. This gets around the problem of the Dragon not seeing target power, but leads me right into the next issue. This is easily achieved by taking a small jumper between any of the +5V header pins on the dragon and connecting it to pin 2 (VTG) on the ISP header on the Dragon. If you don’t do this, avrdude reports that the Dragon refuses to do anything because it thinks the target device does not have power. When using HVSP, you need to make sure that the Dragon sees 5V on its VTG pin on the ISP header.
Search for dragon and you should jump to the correct article, if the site is still around. I can’t contact the author or leave a comment, and I can’t link directly to the specific article because the site throws 404s. This solution came from, which appears to be on its last legs. The Dragon seems to have its own set of issues.
HVSP isn’t just the standard ISP with 12V on the reset line it’s a significantly different protocol and I figured I’d just buy the $60 Dragon instead of screwing around building something.
#ATMEL DRAGON BOARD SERIAL#
I bought it because I needed high voltage serial programming (HVSP) for the ATTiny13A device I’d selected for a project. The AVR Dragon is a little development board that can program and debug AVRs.
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