why does coordinator will sending the NWK leave MSG when a new device join？

Can you specify which Z-Stack version and example you are testing? Do you modify anything in Z-Stack when you test this?

Zstack- 1.2.2.42930

custom code

i have modify the factory reset as below

//delete the user item of NV
osal_nv_delete( ZONE_CIEADDRESS_AND_ENROLL_INFO, NV_CIEADDR_LEN+NV_EXTDATA_LEN);
//delete NWK HOLD item
osal_nv_delete( NWKHOLD_STATE, NV_NWKHOLD_LEN );



// ZDO Management Leave server service
zAddrType_t *dstAddr_All =NULL;

dstAddr_All->addrMode = (afAddrMode_t)(AddrBroadcast);
dstAddr_All->addr.shortAddr = 0xFFFF;

//leave network without waiting other parents feedback;
ZDP_MgmtLeaveReq(dstAddr_All, NLME_GetExtAddr(), FALSE,FALSE, 1);

BroadcastTime =5; //reset after 5s
HAL_DISABLE_P0_INTERRUPTS();
zclEmerButton_BroadcastLeave_TimeChange();

// Put device back to factory default settings
// Set the NV startup option to force a "new" join. //3
// bit set both default configuration and default network
zgWriteStartupOptions( ZG_STARTUP_SET, ZCD_STARTOPT_DEFAULT_NETWORK_STATE | ZCD_STARTOPT_DEFAULT_CONFIG_STATE );


// Set every field to 0
// This will enable the device to rejoin the network after reset.
// Leave the network, and reset afterwards
NLME_LeaveReq_t leaveReq;
osal_memset( &leaveReq, 0, sizeof( NLME_LeaveReq_t ) );
leaveReq.rejoin = TRUE;

if ( NLME_LeaveReq( &leaveReq ) != ZSuccess )
{
// Couldn't send out leave; prepare to reset anyway
// If ZDApp_LeaveReset( FALSE );
// the device only suceess in the ZC was always working
// or the device will set DEV_HOLD after doing the factory reset
ZDApp_LeaveReset( TRUE );
}

osal_stop_timerEx( zclEmerButton_TaskID, FactoryReset_EVT );

MT_SysCommandProcessing( aProcessCmd );

It seems that you are manipulating something and causing this. If you use original Z-Stack without these modifications, do you still see this behavior?

manipulating ？？


en ，maybe there is a long delay of my coordinator as there are so many devices in the network~~~~~
so when ZED send a leave request， the coordinator keep the NWK leave for some time ，

and i just let ZED rejoin again quickly ， then when it joined ， it will send a data request ， then it receive the NWK Leave

so it leaves~~~~~

I mean what you intend to do by adding those code?