HyQuest Solutions Pty Ltd
Point Velocity Display - Model PVD100
©
Copyright
41
Issue 1.00 4 Apr, 2007
Appendix C Serial Port Echo Command
The
PVD100
has a special serial port character echo command that can be used to echo
characters or short strings appearing through the serial port. The command can be used to
‘see’ what characters are being transmitted to the
PVD100
. This command can be useful to
software application developers. To invoke the command, simply send the single ASCII
character ‘~’. On a laptop keyboard, this character is located on the numbers key row and is
the left most character key in the row. The character is a shift key character and the ‘shift’
key must be used to send the character. This echo character command acts like a switch
which turns
On
character echo or turns
Off
character echo. When ‘
character echo’
is turned
On
, any character received through the serial interface is echo’d back through the port and
any character sent will
not
be interpreted as a function or operating command to the
PVD100
.
Shown below is a simple pictorial of the Serial Port function of the
PVD100.
Using
Bluetooth
®
and an additional serial port device connected to the hardware port of the
PVD100,
can assist developers in their applications and ‘seeing’ what commands are sent to
the
PVD100
.
PVD100
PVD100
