QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Setting the ohpaged parameter. |
| Ref. No. |
QNX.000009441 |
| Category(ies) |
Utilities, Character I/O |
| Issue |
What sets the Dev32.ser driver's ohpaged parameter to "+" in one of the serial ports? Can this parameter be set to a constant "-" value? |
| Solution |
The -F option in Dev.ser can be used to disable locked hardware flow control on a specific port. The syntax is:
Dev.ser [[-F]...[portspec]]..&
Disabling the lock on flow control means that other application programs can change the flow control modes. -f enables hardware flow control and locks it on, so only stty can change the flow control modes.
stty [-ohpaged] [<device] can be used to stop output from being paged by hardware flow control.
stty [-ohflow] [<device] can be used to disable hardware output flow control.
If hardware flow control is disabled, software flow control should be used. |
|
