Hi Chris asked me about the valid use of B0 in termios. I recalled it had special meaning and decided to dig it up. It means hang up.
http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/termios.h.html tcsetattr() is clearer and says "the modem control lines shall no longer be asserted. Normally, this shall disconnect the line." http://pubs.opengroup.org/onlinepubs/9699919799/functions/tcsetattr.html I added debug asserts() to some libchip drivers since B0 == 0 which means that converting it to a baud for division purposes can give a divide by 0. Chris suggested catching it in termios somewhere in libcsupport and not supporting it. Reading the Open Group pages, I think it is the obligation of every setAttr method in drivers to protect themselves from divide by 0 or support it. If we decide that drivers need to protect themselves, I will go back and add an error check to the ones I modified to return not supported. Thoughts? --joel _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
