Echelon LonTal Stack Manual de usuario descargar pdf (Pagina 228)

216 Appendix G: Appendix G

Example LonTalk

Stack Applications

5. Runs a simple command console:

• When the S command is pressed, sends a service pin messages from both

router halves by calling the sendServicePinMsg() method of the

LtIp852Router object.

• When the E or Q command is pressed, breaks out of the console loop

6. On exit, does the following:

• Shuts down the router by calling the Shutdown() method of the

LtIp852Router object.

• Closes the native LonWorks network interface by deleting the

LtLogicalChannel object.

The main() function is shown below.

/* The main function just initializes the router and then runs a simple

command line interface. */

int main(int argc, char* argv[])

{

const char *pNiName = NULL;

int ipAddress;

int ipPort;

LtIp852Router router;

LtLtLogicalChannel *pLtChannel = NULL;

LtErrorType sts;

if (argc < 4 || sscanf(argv[3], "%d", &ipPort) != 1)

{

printf("Run an IP-852 to native LonTalk Router\n\n"

"Syntax:\n"

" Ip852Router <niName> <ipAddress> <ipPort>\n"

"\n"

" <niName> is the name of the native LonTalk network

interface\n"

" <ipAddress> is the IPv4 dotted-decimal address to use

for the IP-852\n"

" interface\n"

" <port> is a decimal port number to use for the

IP-852 interface\n"

"\n");

return 1;

}

else

{

pNiName = argv[1];

ipAddress = htonl(inet_addr(argv[2]));

}

pLtChannel = new LtLtLogicalChannel(pNiName);

sts = pLtChannel->getStartError();

if (sts == LT_NO_ERROR && !pLtChannel->getLonLink()->isOpen())

{

sts = LT_CANT_OPEN_PORT;

}

if (sts == LT_NO_ERROR)

{

#pragma message ("Warning: TBD - Must set a valid unique ID for IP-852

interface!!!")

const byte data[6] = { 0xBA, 0xDB, 0xAD, 0xBA, 0xD0, 0x00 };

LtUniqueId ltUid;

LtUniqueId ipUid(data);

pLtChannel->getLonLink()->getUniqueId(ltUid);

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