hi.
as of couple of days ago, no longer upload s/w ide of arduino boards. have nano (built in usb) , homebrew built uno compatible boot loader + external ftdi adapter. both working - literally downloaded code 1 night no problems, failed next morning. arduino board functioning since can see running old version of code. have tried downloading simple "blink" code, no change don't think source code.
running windows 8.1, 64 bit ide 1.6.1. updated ide 1.6.3 no change. multiple pc reboots. have tried deleting , reloading device drivers no change. in devmgr, see single device under "ports (com & lpt)", named "usb serial port (com3)" uno bootloader. enabled option see hidden devices in device manager, , don't see additional ports. used microsoft usb tree utility , don't see strange. board , serial port set correctly. have tried 2 different cables. uno bootloader arduino supports autoreset, , have tried various manual reset permutations no change. there seems thread missing usbser.sys file - can see in windows\system32\drivers.
verbose upload details below. in advance help.
[update] - solved myself - microsoft mouse driver using serial usb port. hadnt used mouse months , not sure why decided start causing conflict ... troubleshooting similar issue, note mouse driver wasnt visible in "ports" section of devmgr when viewing "devices type" - had switch "devices connection" see it
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arduino: 1.6.3 (windows 8.1), board: "arduino uno"
build options changed, rebuilding all
sketch uses 1,030 bytes (3%) of program storage space. maximum 32,256 bytes.
global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes local variables. maximum 2,048 bytes.
c:\program files (x86)\arduino\hardware\tools\avr/bin/avrdude -cc:\program files (x86)\arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -pcom3 -b115200 -d -uflash:w:c:\users\mark\appdata\local\temp\build5681242342844022799.tmp/blink.cpp.hex:i
avrdude: version 6.0.1, compiled on mar 30 2015 @ 14:56:06
copyright (c) 2000-2005 brian dean, http://www.bdmicro.com/
copyright (c) 2007-2009 joerg wunsch
system wide configuration file "c:\program files (x86)\arduino\hardware\tools\avr/etc/avrdude.conf"
using port : com3
using programmer : arduino
overriding baud rate : 115200
avrdude: ser_open(): can't open device "\\.\com3": access denied.
avrdude done. thank you.
problem uploading board. see http://www.arduino.cc/en/guide/troubleshooting#upload suggestions.
report have more information with
"show verbose output during compilation"
enabled in file > preferences.
as of couple of days ago, no longer upload s/w ide of arduino boards. have nano (built in usb) , homebrew built uno compatible boot loader + external ftdi adapter. both working - literally downloaded code 1 night no problems, failed next morning. arduino board functioning since can see running old version of code. have tried downloading simple "blink" code, no change don't think source code.
running windows 8.1, 64 bit ide 1.6.1. updated ide 1.6.3 no change. multiple pc reboots. have tried deleting , reloading device drivers no change. in devmgr, see single device under "ports (com & lpt)", named "usb serial port (com3)" uno bootloader. enabled option see hidden devices in device manager, , don't see additional ports. used microsoft usb tree utility , don't see strange. board , serial port set correctly. have tried 2 different cables. uno bootloader arduino supports autoreset, , have tried various manual reset permutations no change. there seems thread missing usbser.sys file - can see in windows\system32\drivers.
verbose upload details below. in advance help.
[update] - solved myself - microsoft mouse driver using serial usb port. hadnt used mouse months , not sure why decided start causing conflict ... troubleshooting similar issue, note mouse driver wasnt visible in "ports" section of devmgr when viewing "devices type" - had switch "devices connection" see it
------------------------------------------------------------------------------------------------------------------
arduino: 1.6.3 (windows 8.1), board: "arduino uno"
build options changed, rebuilding all
sketch uses 1,030 bytes (3%) of program storage space. maximum 32,256 bytes.
global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes local variables. maximum 2,048 bytes.
c:\program files (x86)\arduino\hardware\tools\avr/bin/avrdude -cc:\program files (x86)\arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -pcom3 -b115200 -d -uflash:w:c:\users\mark\appdata\local\temp\build5681242342844022799.tmp/blink.cpp.hex:i
avrdude: version 6.0.1, compiled on mar 30 2015 @ 14:56:06
copyright (c) 2000-2005 brian dean, http://www.bdmicro.com/
copyright (c) 2007-2009 joerg wunsch
system wide configuration file "c:\program files (x86)\arduino\hardware\tools\avr/etc/avrdude.conf"
using port : com3
using programmer : arduino
overriding baud rate : 115200
avrdude: ser_open(): can't open device "\\.\com3": access denied.
avrdude done. thank you.
problem uploading board. see http://www.arduino.cc/en/guide/troubleshooting#upload suggestions.
report have more information with
"show verbose output during compilation"
enabled in file > preferences.
a couple of other details. when connect, disconnect or reset boards pc makes windows attach/detach sounds normally. ports in ide "port" menu show - not greyed out or anything, , port numbers match between ide , windows devmgr.
Arduino Forum > Using Arduino > Installation & Troubleshooting > [SOLVED] Uploading: avrdude: ser_open(): can't open device "\\.\COM3":
arduino
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