I have an Arduino due board, and I am using windows 7 system(64-bit), Arduino ide 1.5.1r2. Using programming port to upload programs
when I upload my programs to the Arduino due board. The IDE always shows that
Forcing reset using 1200bps open/close on port COM2
XX/XX/XX/tools/bossac.exe --port=COM2 -U false -e -w -v -b
No device found on COM2
Actually I found one solution for this, before uploading the Programs, I just press “erase” button first and hold for seconds, then press "Reset" button，then release “erase” button, finally release "Reset" button. Just clear the program inside manually before uploading.
Then I can upload my programs successfully. But I think When I uploading the new program, the older one should be erase automatically, if
every time I need to erase manually, it isn't so convenient. Did anyone has similar experience on that? How to solve this problem.