ESP32 Forum

Posted: **Wed Jun 15, 2022 10:53 am**

I'm working on a project based on ethernet communication via ESP32 + LAN8720 module

I set up a static IP right after booting and proceed with certain tasks, and a sequence is needed to change the dynamic IP.

In ETH.H/CPP there is a begin method but no corressponding end method.

I am going to make ETH.END and use it in the process of changing static IP to dynamic IP.

ETH.END implementation ( ETH.CPP)

Code: [Select all] [Expand/Collapse]

esp_netif_t *g_eth_netif = NULL;
 
bool ETHClass::end()
{
   esp_err_t err;
   eth_link = ETH_LINK_DOWN;
 
   if(eth_handle != NULL)
   {
      err = esp_eth_stop(eth_handle);
 
      if (err)
      {
         log_e("esp_eth_stop error: %d", err);
         return false;
      }
   }
 
   if(g_eth_netif != NULL)
   {
      /* These default interfaces must not be created multiple times, unless the created handle is deleted using esp_netif_destroy().*/ 
      esp_netif_destroy(g_eth_netif);
      g_eth_netif = NULL;
   }
 
   started = false;
 
   return true;
}

STAIC IP -> ETH.end -> Dynamic IP

I want to do this, but it is not working normally
please help me
ESP32 wrover- E + POE (AG9905M) + LAN8720

The log file is attached below.

uStartETH(), 0, 0, 0

[ETH] pstSetEthIP_Client(ETH_PRODUCTION) : ST_IPTYE, 0
ST-IP
192.168.200.154
192.168.200.1
255.255.255.0
8.8.8.8
8.8.4.4
[ETH] Eth.end()
[ETH] pstIpConfig->u8IpType = 1

[ 7314][V][WiFiGeneric.cpp:363] _arduino_event_cb(): Ethernet Started
[ 7315][D][WiFiGeneric.cpp:852] _eventCallback(): Arduino Event: 18 - ETH_START
[ 7317][V][WiFiGeneric.cpp:355] _arduino_event_cb(): Ethernet Link Up
[ 7323][D][WiFiGeneric.cpp:852] _eventCallback(): Arduino Event: 20 - ETH_CONNECTED
[ETH] Eth.begin()
[ETH] Connecting to ETH(1)
[ 7381][V][WiFiGeneric.cpp:370] _arduino_event_cb(): Ethernet got newip:192.168.200.154
[ 7382][D][WiFiGeneric.cpp:852] _eventCallback(): Arduino Event: 22 - ETH_GOT_IP
[ 7385][D][WiFiGeneric.cpp:950] _eventCallback(): ETH IP: 192.168.200.154, MASK: 255.255.255.0, GW: 192.168.200.1
[ETH] Eth.config() : ST-IP
esp_task_wdt_reset(Task_Network) : 0
..[ 9325][V][WiFiGeneric.cpp:360] _arduino_event_cb(): Ethernet Link Down
[ 9325][D][WiFiGeneric.cpp:852] _eventCallback(): Arduino Event: 21 - ETH_DISCONNECTED
..........[ 17325][V][WiFiGeneric.cpp:355] _arduino_event_cb(): Ethernet Link Up
[ 17325][D][WiFiGeneric.cpp:852] _eventCallback(): Arduino Event: 20 - ETH_CONNECTED
[ 17325][V][WiFiGeneric.cpp:370] _arduino_event_cb(): Ethernet got ip:192.168.200.154
[ 17335][D][WiFiGeneric.cpp:852] _eventCallback(): Arduino Event: 22 - ETH_GOT_IP
[ 17342][D][WiFiGeneric.cpp:950] _eventCallback(): ETH IP: 192.168.200.154, MASK: 255.255.255.0, GW: 192.168.200.1
...[ 19325][V][WiFiGeneric.cpp:360] _arduino_event_cb(): Ethernet Link Down
[ 19325][D][WiFiGeneric.cpp:852] _eventCallback(): Arduino Event: 21 - ETH_DISCONNECTED
.............[ 29325][V][WiFiGeneric.cpp:355] _arduino_event_cb(): Ethernet Link Up
[ 29325][D][WiFiGeneric.cpp:852] _eventCallback(): Arduino Event: 20 - ETH_CONNECTED
[ 29325][V][WiFiGeneric.cpp:370] _arduino_event_cb(): Ethernet got ip:192.168.200.154
[ 29335][D][WiFiGeneric.cpp:852] _eventCallback(): Arduino Event: 22 - ETH_GOT_IP
[ 29342][D][WiFiGeneric.cpp:950] _eventCallback(): ETH IP: 192.168.200.154, MASK: 255.255.255.0, GW: 192.168.200.1
...
OP_RETRY : g_u8TryConnectMode = 0

ETH_END_CONNECT---

uStartETH(), 1, 0, 0

[ETH] pstSetEthIP_Client(ETH_NORMAL_DYST) : DY-IP, 1
DY-IP
0,0,0,0
0,0,0,0
0,0,0,0
0,0,0,0
0,0,0,0
[ 31147][V][WiFiGeneric.cpp:366] _arduino_event_cb(): Ethernet Stopped
[ 31148][D][WiFiGeneric.cpp:852] _eventCallback(): Arduino Event: 19 - ETH_STOP
[ETH] Eth.end()
[ETH] pstIpConfig->u8IpType = 0
E (44852) esp.emac: esp_eth_mac_new_esp32(595): alloc emac interrupt failed
[ 31166][E][ETH.cpp:343] begin(): esp_eth_mac_new_esp32 failed
[ETH] Eth.begin()
[ETH] Connecting to ETH(0)
[ 31179][E][ETH.cpp:516] config(): ETHClass::config() Dynamic IP

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