adafruit-arduino-1.6.4-windows\arduino-1.6.4\hardware\tools\avr/bin/avrdude (avrdude: Version 6.0.1)
and:
avrdude version 6.1-svn-20131205, URL: <http://savannah.nongnu.org/projects/avrdude/
Coming back to Trinket over the last week or so something unusual was happening during upload. There are a lot of (70 odd) 'n retries during SPI command' messages on the console during the write. But it flashes successfully so I wasn't too perturbed.
However, the last couple of days I've been unable to flash an AVR as Avrdude is seeing (or not seeing) the USBtinyISP programmer per the following.
Also what seems to have changed is that the devices now show up as USBtiny under Atmel USB Devices in Device Manager.C:\Users\Mark\Documents\AVR-Programming-master\Chapter12_Analog-to-Digital-Conversion-II\voltmeter>make flash
avrdude -c usbtiny -p atmega168 -U flash:w:voltmeter.hex
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override
this check.
avrdude done. Thank you.
make: *** [flash] Error 1
C:\Users\Mark\Documents\AVR-Programming-master\Chapter12_Analog-to-Digital-Conversion-II\voltmeter>
I've used 3 different USB cables and different Trinkets 3V/5V and get the same outcome.
I've also used 3 different USB cables on the USBtinyISP; via 2.0 hub and 2.0 on laptop; and tried other makefiles that have always worked.
I have retried reinstalling the latest drivers and while the Win 10 exercise never gives me 100% confidence, the right drivers seem to be in the right directories.
I have also searched the forums for anything similar but only been able to find the drivers advice. Any ideas what else I might try?