3200作为AP模式，IP连接可以获取，断开连接的怎么获取

void SimpleLinkNetAppEventHandler(SlNetAppEvent_t *pNetAppEvent)
{
switch(pNetAppEvent->Event)
{
case SL_NETAPP_IPV4_IPACQUIRED_EVENT:
case SL_NETAPP_IPV6_IPACQUIRED_EVENT:
{
SET_STATUS_BIT(g_ulStatus, STATUS_BIT_IP_AQUIRED);
}
break;

case SL_NETAPP_IP_LEASED_EVENT:
{
SET_STATUS_BIT(g_ulStatus, STATUS_BIT_IP_LEASED);

g_ulStaIp = (pNetAppEvent)->EventData.ipLeased.ip_address;

UART_PRINT("[NETAPP EVENT] IP Leased to Client: IP=%d.%d.%d.%d , ",
SL_IPV4_BYTE(g_ulStaIp,3), SL_IPV4_BYTE(g_ulStaIp,2),
SL_IPV4_BYTE(g_ulStaIp,1), SL_IPV4_BYTE(g_ulStaIp,0));
}
break;

case SL_NETAPP_IP_RELEASED_EVENT:
{
CLR_STATUS_BIT(g_ulStatus, STATUS_BIT_IP_LEASED);

UART_PRINT("[NETAPP EVENT] IP Released for Client: IP=%d.%d.%d.%d , ",
SL_IPV4_BYTE(g_ulStaIp,3), SL_IPV4_BYTE(g_ulStaIp,2),
SL_IPV4_BYTE(g_ulStaIp,1), SL_IPV4_BYTE(g_ulStaIp,0));

}
break;

default:
{
UART_PRINT("[NETAPP EVENT] Unexpected event [0x%x] \n\r",
pNetAppEvent->Event);
}
break;
}
}