PowerPC 403 serial communications manager (QNX Neutrino)
|You must be root to start this driver.|
devc-ser403 [options] & devc-tser403 [options] &
The order in which you specify the -E or -e, and -S or -s options matters:
|Options||Mode||Software flow control|
The devc-ser403 manager is a small serial device manager for QNX Neutrino. It supports the builtin serial port present in the PowerPC 403.
The devc-tser403 manager is a "tiny" version of devc-ser403 that's intended for memory-constrained systems. It doesn't support special character editing (e.g. toggling insert mode, special erase characters).
The port is given a name in the pathname space of /dev/sern, where n starts at 1 (unless overridden via the -u option) and increases.
|If your application uses /dev/console,
you should create a link from it to one of
/dev/ser1, /dev/ser2, ... by adding
a line like this to the buildfile used by mkifs:
[type=link] /dev/console = /dev/ser1
The port is fully interrupt driven and by default supports standard hardware flow control on input and output (RTS/CTS). This can be disabled by the -F option.
|Hardware flow control is not supported in edited mode.|
A read request by default returns when at least 1 character is available. To increase efficiency, you can control three parameters to control when a read is satisfied:
|If the Min value is greater than the size of the input buffer, the Min value is clipped to the size of the buffer. To avoid this, the size of the input buffer can be changed with the -I option.|
These parameters are set using library routines (see tcgetattr(), tcsetattr(), readcond() and TimerTimeout() in the Library Reference).
The devc-ser403 manager supports both raw and edited modes, making it a real tty device.
The following fields and flags are supported in the termios structure:
|c_iflag||BRKINT ICRNL IGNBRK IXON|
|c_cflag||CLOCAL CSIZE CSTOPB PARENB PARODD|
|c_lflag||ECHO ECHOE ECHOK ECHONL ICANON IEXTEN ISIG NOFLSH|
Character I/O drivers (devc-*) in the Utilities Summary