Changed BBR router upgrade status (#1661)

When BBR is started, it should require router ID with status
"HAVE_CHILD_ID_REQUEST" (3)

Author: Tero Heinonen

source/6LoWPAN/Thread/thread_bbr_api.c

@@ -738,7 +738,7 @@ static bool thread_bbr_activated(thread_bbr_t *this, uint32_t seconds)
         return true;
     }
     // We will try to become router. This is done only in 120 seconds intervals if failed
-    thread_router_bootstrap_router_id_request(cur, 0);
+    thread_router_bootstrap_router_id_request(cur, THREAD_BBR_ROUTER_ID_REQUEST_STATUS);
     this->router_upgrade_delay_timer = 120;
     return false;
 }

source/6LoWPAN/Thread/thread_config.h

@@ -31,6 +31,10 @@
 #ifndef THREAD_CONFIG_H_
 #define THREAD_CONFIG_H_
 
+/**
+ * Thread stack configuration values. All constants that are specified in Thread specification can be found from thread_constants.h
+ */
+
 #include "thread_constants.h"
 
 /**
@@ -316,6 +320,12 @@
  * Parent response wait time (in 100ms) when both "R" and "E" bit is set in scan mask TLV (rounded up from 1.25 seconds)
  */
 #define THREAD_PARENT_REQ_SCANMASK_RE_TIMEOUT 15
+
+/*
+ * When BBR is started, router address is requested from leader with following status
+ */
+#define THREAD_BBR_ROUTER_ID_REQUEST_STATUS THREAD_COAP_STATUS_TLV_HAVE_CHILD_ID_REQUEST
+
 /**
  * Build time flag to enable THCI special traces for test harness purposes
  */

source/6LoWPAN/Thread/thread_constants.h

@@ -31,7 +31,7 @@
 #define THREAD_CONSTANTS_H_
 
 /**
- * Constants defined in Thread specifications
+ * Constants defined in Thread specifications. All configured values are defined in thread_config.h
  */
 
 /**