*** stock_iot-lab_M3/openwsn/07-App/udprand/udprand.c	Thu Apr 24 11:01:37 2014
--- riot-openwsn-wip/openwsn/07-App/udprand/udprand.c	Thu Apr 24 16:55:54 2014
***************
*** 8,13 ****
--- 8,17 ----
  #include "openrandom.h"
  #include "opencoap.h"
  #include "scheduler.h"
+ #include "idmanager.h"
+ #include "IEEE802154E.h"
+
+ #include "thread.h"

  //=========================== defines =========================================

***************
*** 21,41 ****
  } udprand_vars_t;

  udprand_vars_t udprand_vars;
!
  //=========================== prototypes ======================================

! void udprand_timer();

  //=========================== public ==========================================

! void udprand_init() {
     udprand_vars.timerId    = opentimers_start(openrandom_get16b()%UDPRANDPERIOD,
                                            TIMER_PERIODIC,TIME_MS,
                                            udprand_timer);
  }

! void udprand_task(){
      OpenQueueEntry_t* pkt;
     //prepare packet
     pkt = openqueue_getFreePacketBuffer(COMPONENT_UDPRAND);
     if (pkt==NULL) {
--- 25,55 ----
  } udprand_vars_t;

  udprand_vars_t udprand_vars;
! //static char openwsn_udprand_stack[KERNEL_CONF_STACKSIZE_MAIN];
  //=========================== prototypes ======================================

! void udprand_timer(void);

  //=========================== public ==========================================

! void udprand_init(void) {
     udprand_vars.timerId    = opentimers_start(openrandom_get16b()%UDPRANDPERIOD,
                                            TIMER_PERIODIC,TIME_MS,
                                            udprand_timer);
  }

! void udprand_task(void){
      OpenQueueEntry_t* pkt;
+
+    // don't run if not synch
+    if (ieee154e_isSynch() == FALSE) return;
+
+     // don't run on dagroot
+    if (idmanager_getIsDAGroot()) {
+       opentimers_stop(udprand_vars.timerId);
+       return;
+    }
+
     //prepare packet
     pkt = openqueue_getFreePacketBuffer(COMPONENT_UDPRAND);
     if (pkt==NULL) {
***************
*** 60,70 ****
     }
  }

! void udprand_timer() {
!   scheduler_push_task(udprand_task,TASKPRIO_COAP);
  }

! void udprand_sendDone(OpenQueueEntry_t* msg, error_t error) {
     msg->owner = COMPONENT_UDPRAND;
     if (msg->creator!=COMPONENT_UDPRAND) {
        openserial_printError(COMPONENT_UDPRAND,ERR_UNEXPECTED_SENDDONE,
--- 74,87 ----
     }
  }

! void udprand_timer(void) {
!     scheduler_push_task(udprand_task,TASKPRIO_COAP);
!   /*thread_create(openwsn_udprand_stack, KERNEL_CONF_STACKSIZE_MAIN,
!                  PRIORITY_OPENWSN_UDPRAND, CREATE_STACKTEST,
!                  udprand_task, "udprand task");*/
  }

! void udprand_sendDone(OpenQueueEntry_t* msg, owerror_t error) {
     msg->owner = COMPONENT_UDPRAND;
     if (msg->creator!=COMPONENT_UDPRAND) {
        openserial_printError(COMPONENT_UDPRAND,ERR_UNEXPECTED_SENDDONE,
***************
*** 78,81 ****
     openqueue_freePacketBuffer(msg);
  }

! //=========================== private =========================================
\ No newline at end of file
--- 95,98 ----
     openqueue_freePacketBuffer(msg);
  }

! //=========================== private =========================================