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Operating Systems Linux Debian Reading data from a serial port Post 302920063 by wisecracker on Tuesday 7th of October 2014 02:56:39 AM
Old 10-07-2014
What do you mean how?

If the value being read from the serial port is 0, (zero), then the cursor will not move.
Until the value changes from 33 to 126 you will not see anything printed but the cursor __might__ move by one space.

What is connected to the serial port, /dev/ttyS0?
Does it allow raw transfer? (e.g. Arduino.)

If nothing is connected then obtain a loopback plug as a test piece and plug it into the port.

Once set up and with a loopback plug connected use this untested line:-
Code:
printf "Some text to display" > /dev/ttyS0

 

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scsimgr_fcd(7)						 Miscellaneous Information Manual					    scsimgr_fcd(7)

NAME
scsimgr_fcd - Fibre Channel interface driver fcd plug-in for scsimgr DESCRIPTION
The Fibre Channel interface driver plug-in for implements management operations specific to fibre channel HBA controllers bound to driver is the native HP-UX Fibre Channel interface driver that manages fibre channel devices. The plug-in handles the following operations for driver o Get, set and save per driver instance attributes. Commands The user can explicitly send the following commands to the driver plug-in by specifying the instance#> HBA controller hardware path> instance#> option: Displays information on attributes. Saves value of attributes in a persistent store. Sets values of attributes. Refer to scsimgr(1M) for the syntax of these commands. automatically invokes the plug-in to perform the driver specific part of the operation when the operation applies to per driver instances. Attributes The following table lists driver specific attributes. For details on the concept of attributes refer to scsimgr(1M). Note: The following conventions are used: o RO is Read Only. o RW is Read Write. o string is an array of characters. --------------------------------------------------------------------- Object Attribute Name RO/RW Type Description --------------------------------------------------------------------- Controller sym_port_name RW string Symbolic Port Name for fibre channel HBA con- troller Default: <host- name>_fcd<instance#> --------------------------------------------------------------------- sym_node_name RW string Symbolic Node Name for fibre channel HBA con- troller Default: <hostname>_HP- UX_<os release version> --------------------------------------------------------------------- EXAMPLES
Display all attributes for HBA controller with DSF /dev/fcd1: Get HBA controller symbolic port name for DSF /dev/fcd1: Get HBA controller symbolic node name for hardware path 0/2/1/0: Set HBA controller symbolic port name for DSF /dev/fcd1 to fcd1_port: Set HBA controller symbolic node name for class fc and instance 8 to fcd1_node: Save HBA controller symbolic port name for DSF /dev/fcd1 as fcd1_port: Save HBA controller symbolic node name for hardware path 0/2/1/0 as fcd1_node: AUTHOR
Fibre Channel interface driver plug-in for was developed by HP. SEE ALSO
scsimgr(1M), intro(7). scsimgr_fcd(7)
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