[avrdude-dev] USB-to-serial-converter on OS X

[Jan-Hinnerk Reichert]

Hi all,

a friend of mine had problems using avrdude with a 
USB-to-serial-converter on his Mac.

We were able to track the problems to the open() call in 
"ser_posix.c"! It simply doesn't return. Uncommenting the "O_NOBLOCK" 
there solves his problems.

Has anyone else seen this (or a similar) problem?

Is it safe to use "O_NONBLOCK" (on all systems)?

Cheers
  Jan-Hinnerk