Joerg Desch <jd....@web.de> wrote: > With -Os enables, the setup of the port pin is removed! Without > optimization the pin toggles as expected.
How did you verify it? I don't believe the compiler removed the code. (If you really think it does, please supply a compilable code example.) However, the optimized code will just toggle the pin for a single CPU cycles only, while the pin will stay a little longer at high in the non-optimized example. So if your oscilloscope is too slow, you might not notice the pin actually becoming high for one clock period. -- cheers, J"org .-.-. --... ...-- -.. . DL8DTL http://www.sax.de/~joerg/ NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-) _______________________________________________ AVR-GCC-list mailing list AVR-GCC-list@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-gcc-list
