Re: Serial Comms

[Stuart Booth]

Re. Kevin mentioned in a SliMP3 thread:
> I was thinking that a very simple xAP application schema could be
> devised for this that could be very useful for controlling a multitude
> of serial based devices - eg AV amps etc that haven't got direct
> support. In this way any HV serial command could be sent to HV
> (via xAP) and received causing a xAP message to originate.

On Tue, 21 Oct 2003 00:24:48 +0100, "Kevin Hawkins"
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wrote:

>How easy would it be to churn out the app Stuart ?

No bother at all. Can I add it to the (enormous) list?

> > I'm tempted to make the stop bits an enum so I can use the value
One,
> > OneAndAHalf and Two instead.
>
>Stop=1
>Stop=1.5
>Stop=2

Okay, how about this then:

private static void TestSerialCommsSchema ()
{
xAPSerialCommsMessage msg = new xAPSerialCommsMessage ();
msg.AddMessageBlock(new xAPSerialSetupBlock (1));
msg.AddMessageBlock(new xAPSerialSendBlock (1, "Hello, World"));

xAPSerialSetupBlock setup_block = msg.SetupBlock;
setup_block.Baud = 1200;
setup_block.Stop = STOP_BITS.OneAndHalf;
setup_block.DataBits = 8;
setup_block.Parity = PARITY_TYPE.Even;
setup_block.FlowControl = FLOW_CONTROL.Hardware;

xAPSerialSendBlock send_block = msg.SendBlock;
send_block.Port = 1;
send_block.Data = "Critical Data";

xAPSender.ApplicationSender.Send(msg);
} // End of TestSerialCommsSchema

The above generates and transmits the following xAP message:

xap-header
{
v=12
hop=1
uid=FFABCD00
class=Serial.Comms
source=KCSoft.TestFramework.anya
}
Serial.Setup
{
parity=Even
stop=1.5
flow=Hardware
port=1
databits=8
baud=1200
}
Serial.Send
{
port=1
data=Critical Data
}

This way I get to control the data integrity and the rules of your
suggested xAP schema and still keep the output compact and neat.
"Stop=1.5" does look right.

Any more ideas, just shout.

S
--
Stuart Booth <<a
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