Merged in antmerlino/nuttx/xbee-timeout-fix (pull request #656)

drivers/xbee: Fixes issue with timeouts.  Timeouts were in ticks but should have been in ms.  This caused false triggers of timeout causing redundant packets, etc.

Approved-by: GregoryN <gnutt@nuttx.org>

drivers/wireless/ieee802154/xbee/xbee.c

@@ -60,7 +60,7 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-#define XBEE_ATQUERY_TIMEOUT 100
+#define XBEE_ATQUERY_TIMEOUT MSEC2TICK(100)
 
 /****************************************************************************
  * Private Types
@@ -625,6 +625,11 @@ static void xbee_process_apiframes(FAR struct xbee_priv_s *priv,
                       wlinfo("Sleep Period: %dsec\n",
                              frame->io_data[frame->io_offset]/100);
                     }
+                  else if (memcmp(command, "RR", 2) == 0)
+                    {
+                      wlinfo("XBee Retries: %d\n",
+                             frame->io_data[frame->io_offset]);
+                    }
                   else
                     {
                       wlwarn("Unhandled AT Response: %.*s\n", 2, command);
@@ -1557,4 +1562,5 @@ void xbee_regdump(FAR struct xbee_priv_s *priv)
   xbee_send_atquery(priv, "A1");
   xbee_send_atquery(priv, "A2");
   xbee_send_atquery(priv, "SP");
+  xbee_send_atquery(priv, "RR");
 }

drivers/wireless/ieee802154/xbee/xbee_mac.c

@@ -55,7 +55,8 @@
  ****************************************************************************/
 
 #define XBEE_ASSOC_POLLDELAY 100
-#define XBEE_RESPONSE_TIMEOUT 100
+
+#define XBEE_RESPONSE_TIMEOUT MSEC2TICK(100)
 
 /****************************************************************************
  * Private Types