Adding lldp.json to the simulator

Moving the global on/off onto the LLDP page

Building a table of LLDP status from the S ports. Later on, if
we wish to implement an lldp receiver we can display the remote
details here

Adding support to the cmd parser for the lldp commands

httpd/page_impl.c

@@ -49,6 +49,9 @@ extern __xdata char sfp_module_model[2][17];
 extern __xdata char sfp_module_serial[2][17];
 extern __xdata uint8_t sfp_options[2];
 
+extern __xdata uint16_t lldp_physical_port_status;
+extern __xdata bool lldp_enabled;
+
 __code const uint8_t * __code const HTTP_RESPONCE_JSON = "HTTP/1.1 200 OK\r\nConnection: close\r\nContent-Type: application/json\r\n\r\n";
 __code const uint8_t * __code const HTTP_RESPONCE_TXT = "HTTP/1.1 200 OK\r\nConnection: close\r\nContent-Type: text/plain\r\n\r\n";
 
@@ -619,7 +622,6 @@ static void bridge_to_html(void)
 		byte_to_html(pi_mac[i]);
 }
 
-
 void send_stp(void)
 {
 	uint8_t i, j, st, dsg;
@@ -734,6 +736,22 @@ void send_stp(void)
 	slen += strtox(outbuf + slen, "]}");
 }
 
+void send_lldp(void)
+{
+	dbg_string("send_lldp called\n");
+	slen = strtox(outbuf, HTTP_RESPONCE_JSON);
+
+	slen += strtox(outbuf + slen, "{\"on\":");
+	bool_to_html(lldp_enabled);
+	slen += strtox(outbuf + slen, ",\"port_status\": [");
+
+	for (uint8_t port = machine.min_port; port <= machine.max_port; port++) {
+		bool_to_html((1 << machine.log_to_phys_port[port]) & lldp_physical_port_status);
+		slen += strtox(outbuf + slen, ",");
+    }
+
+	slen += strtox(outbuf + slen, "]}");
+}