Ethernet (W5500) Support with Mongoose WebSocket Adapter on Arduino platform

[demirschmid61]

Hello @matth-x

Thank you very much for the library and WebSocket adapter, the library is helping me for the development of AC charger.

I am developing an OCPP client with ethernet and using Arduino framework. When I use MicroOcppMongoose with wifi it's perfectly working, but when trying to connect using ethernet, ESP32 crashes.

---------Logs when connected using ethernet----------
Local IP : 192.168.0.238
Subnet Mask : 255.255.255.0
Gateway IP : 192.168.0.2
DNS Server : 192.168.0.14
Ethernet Successfully Initialized

[MO] warning (MicroOcppMongooseClient.cpp:202): Insecure connection (WS)
assert failed: tcpip_send_msg_wait_sem IDF/components/lwip/lwip/src/api/tcpip.c:455 (Invalid mbox)

Backtrace: 0x400836a5:0x3ffb1f10 0x4008a231:0x3ffb1f30 0x4008f679:0x3ffb1f50 0x401084d5:0x3ffb2080 0x401161ad:0x3ffb20b0 0x4011620d:0x3ffb20d0 0x401081d1:0x3ffb2120 0x400f504c:0x3ffb2140 0x400f4bb6:0x3ffb2160 0x400f8261:0x3ffb2180 0x400f837f:0x3ffb22e0 0x400f844e:0x3ffb2370 0x400f89ab:0x3ffb2410 0x400f91e6:0x3ffb2530 0x400d2ed9:0x3ffb25c0 0x400fba26:0x3ffb2820

#0 0x400836a5:0x3ffb1f10 in panic_abort at /Users/ficeto/Desktop/ESP32/ESP32S2/esp-idf-public/components/esp_system/panic.c:402
#1 0x4008a231:0x3ffb1f30 in esp_system_abort at /Users/ficeto/Desktop/ESP32/ESP32S2/esp-idf-public/components/esp_system/esp_system.c:128
#2 0x4008f679:0x3ffb1f50 in __assert_func at /Users/ficeto/Desktop/ESP32/ESP32S2/esp-idf-public/components/newlib/assert.c:85
#3 0x401084d5:0x3ffb2080 in tcpip_send_msg_wait_sem at /Users/ficeto/Desktop/ESP32/ESP32S2/esp-idf-public/components/lwip/lwip/src/api/tcpip.c:455 (discriminator 1)
#4 0x401161ad:0x3ffb20b0 in netconn_apimsg at /Users/ficeto/Desktop/ESP32/ESP32S2/esp-idf-public/components/lwip/lwip/src/api/api_lib.c:136
#5 0x4011620d:0x3ffb20d0 in netconn_new_with_proto_and_callback at /Users/ficeto/Desktop/ESP32/ESP32S2/esp-idf-public/components/lwip/lwip/src/api/api_lib.c:166
#6 0x401081d1:0x3ffb2120 in lwip_socket at /Users/ficeto/Desktop/ESP32/ESP32S2/esp-idf-public/components/lwip/lwip/src/api/sockets.c:1774
#7 0x400f504c:0x3ffb2140 in socket at C:/Users/atspc/.platformio/packages/framework-arduinoespressif32@3.20006.221224/tools/sdk/esp32/include/lwip/lwip/src/include/lwip/sockets.h:656
(inlined by) mg_socket_if_connect_tcp at .pio/libdeps/esp32-development-board/ArduinoMongoose/src/mongoose.c:3864
#8 0x400f4bb6:0x3ffb2160 in mg_do_connect at .pio/libdeps/esp32-development-board/ArduinoMongoose/src/mongoose.c:3168
#9 0x400f8261:0x3ffb2180 in mg_connect_opt at .pio/libdeps/esp32-development-board/ArduinoMongoose/src/mongoose.c:3345
#10 0x400f837f:0x3ffb22e0 in mg_connect_http_base at .pio/libdeps/esp32-development-board/ArduinoMongoose/src/mongoose.c:8784
#11 0x400f844e:0x3ffb2370 in mg_connect_ws_opt at .pio/libdeps/esp32-development-board/ArduinoMongoose/src/mongoose.c:10449
#12 0x400f89ab:0x3ffb2410 in MicroOcpp::MOcppMongooseClient::maintainWsConn() at .pio/libdeps/esp32-development-board/MicroOcppMongoose/src/MicroOcppMongooseClient.cpp:219 (discriminator 4)
#13 0x400f91e6:0x3ffb2530 in MicroOcpp::MOcppMongooseClient::MOcppMongooseClient(mg_mgr*, char const*, char const*, char const*, char const*, std::shared_ptrMicroOcpp::FilesystemAdapter, MicroOcpp::ProtocolVersion) at .pio/libdeps/esp32-development-board/MicroOcppMongoose/src/MicroOcppMongooseClient.cpp:76
#14 0x400d2ed9:0x3ffb25c0 in setup() at src/main.cpp:175
#15 0x400fba26:0x3ffb2820 in loopTask(void*) at C:/Users/atspc/.platformio/packages/framework-arduinoespressif32@3.20006.221224/cores/esp32/main.cpp:42
------------------------------------------------------------------------------------------

-------------------------------Logs when connected using wifi with MicroOcppMongoose adapter-----------------------
[main] Wait for WiFi: ........[MO]
warning (MicroOcppMongooseClient.cpp:202): Insecure connection (WS)
[MO] info (MicroOcpp.cpp:349): initialized MicroOcpp v1.1.0
[MO] info (MicroOcppMongooseClient.cpp:474): connection ws://192.168.1.22:1884/fu5v1 -- connected!

[MO] Send: [2,"1000000","BootNotification",{"chargePointModel":"AC","chargePointSerialNumber":"GN234400","chargePointVendor":"myComp","firmwareVersion":"0.0.10"}]
[MO] Recv: [3,"1000000",{"currentTime":"2024-06-11T04:41:41.831724900Z","interval":900,"status":"Accepted"}]
[MO] info (BootNotification.cpp:93): request has been Accepted
[MO] info (StatusNotification.cpp:53): New status: Available (connectorId 0)
[MO] info (StatusNotification.cpp:53): New status: Available (connectorId 1)
[MO] info (StatusNotification.cpp:53): New status: Available (connectorId 2)
[MO] Send: [2,"1000001","StatusNotification",{"connectorId":0,"errorCode":"NoError","status":"Available","timestamp":"2024-06-11T04:41:41.843Z"}]
[MO] Recv: [3,"1000001",{}]
[MO] Send: [2,"1000002","StatusNotification",{"connectorId":1,"errorCode":"NoError","status":"Available","timestamp":"2024-06-11T04:41:41.844Z"}]
[MO] Recv: [3,"1000002",{}]
[MO] Send: [2,"1000003","StatusNotification",{"connectorId":2,"errorCode":"NoError","status":"Available","timestamp":"2024-06-11T04:41:41.855Z"}]
[MO] Recv: [3,"1000003",{}]
------------------------------------------------------------------------------------------

My Questions

1. Is the Mongoose WebSocket adapter perfectly initialized?
2. Am i missing any build flag setting in pltform.ini file

#--------------------------Main.cpp--------------------------#
`
#include <Arduino.h>
#include <WiFi.h>
#include <MicroOcpp.h>
#include "mongoose.h"
#include <MongooseCore.h>
#include <MicroOcpp/Core/Connection.h> //need for setting TLS credentials
#include <MicroOcpp/Core/Configuration.h>
#include "MicroOcppMongooseClient.h"

#include "LittleFS.h"
#include <ArduinoJson.h>

#include <SPI.h>
#include <Ethernet.h>

#define STASSID "mySsid"
#define STAPSK "myPassword"

#define OCPP_BACKEND_URL "ws://192.168.1.22:1884/fu5v1"
#define OCPP_CHARGE_BOX_ID ""

#define FORMAT_LITTLEFS_IF_FAILED true

byte mac[] = {0x84, 0xA9, 0x3E, 0x7C, 0xF4, 0xD2};
char server[] = "www.google.com"; // name address for Google (using DNS)

// Set the static IP address to use if the DHCP fails to assign
#define MYIPADDR 192, 168, 0, 238
#define MYIPMASK 255, 255, 255, 0
#define MYDNS 192, 168, 0, 14
#define MYGW 192, 168, 0, 2

MicroOcpp::MOcppMongooseClient *ocppSocket = NULL;
EthernetClient client;

void beginEthernet()
{
delay(1000);
Serial.println("Begin Ethernet");
Ethernet.init(5); // MKR ETH Shield
if (!Ethernet.begin(mac))
{ // Dynamic IP setup
Serial.println("DHCP OK!");
}
else
{
Serial.println("Failed to configure Ethernet using DHCP");
if (Ethernet.hardwareStatus() == EthernetNoHardware)
{
Serial.println("Ethernet shield was not found. Sorry, can't run without hardware. :(");
while (true)
{
delay(1); // do nothing, no point running without Ethernet hardware
}
}
if (Ethernet.linkStatus() == LinkOFF)
{
Serial.println("Ethernet cable is not connected.");
}
IPAddress ip(MYIPADDR);
IPAddress dns(MYDNS);
IPAddress gw(MYGW);
IPAddress sn(MYIPMASK);
Ethernet.begin(mac, ip, dns, gw, sn);
}
delay(5000);
Serial.print("Local IP : ");
Serial.println(Ethernet.localIP());
Serial.print("Subnet Mask : ");
Serial.println(Ethernet.subnetMask());
Serial.print("Gateway IP : ");
Serial.println(Ethernet.gatewayIP());
Serial.print("DNS Server : ");
Serial.println(Ethernet.dnsServerIP());
Serial.println("Ethernet Successfully Initialized");
}

void setup()
{
Serial.begin(115200);
// Serial.print(F("[main] Wait for WiFi: "));
// WiFi.begin(STASSID, STAPSK);
// while (!WiFi.isConnected())
// {
// Serial.print('.');
// delay(1000);
// }
beginEthernet();
delay(5000);

if (!LittleFS.begin(FORMAT_LITTLEFS_IF_FAILED))
{
    Serial.println("LittleFS Mount Failed");
    return;
}

Mongoose.begin();
auto filesystem = MicroOcpp::makeDefaultFilesystemAdapter(MicroOcpp::FilesystemOpt::Use);
ocppSocket = new MicroOcpp::MOcppMongooseClient(Mongoose.getMgr(), OCPP_BACKEND_URL, OCPP_CHARGE_BOX_ID, nullptr, nullptr, filesystem);
MicroOcpp::configuration_init(filesystem);

delay(5000);
// mocpp_initialize(*ocppSocket, ChargerCredentials("SCHARGE", "SCHARGE", "FWV", "SRNO"));

}

void loop()
{
Mongoose.poll(100);
if (ocppSocket->getLastRecv() == 0)
{
// recv timestamp is still at 0 ms --> no WS has ever been received. Only loop WS lib and not OCPP lib
ocppSocket->loop();
return;
}
// mocpp_loop();
}`
#-------------------------------------------------------------#

#--------------------------Platform.ini--------------------------#
`[platformio]
default_envs = esp32-development-board

[common]
framework = arduino
lib_deps =
bblanchon/ArduinoJson@6.20.1
matth-x/MicroOcpp@^1.1.0
matth-x/MicroOcppMongoose@^1.1.0
jeremypoulter/ArduinoMongoose@^0.0.20
arduino-libraries/Ethernet@^2.0.2
lib_ignore = WebSockets ; ArduinoOcpp: don't compile built-in WS library
monitor_speed = 115200

[env:esp32-development-board]
platform = espressif32@6.0.1
board = esp-wrover-kit
framework = ${common.framework}
lib_deps = ${common.lib_deps}
monitor_speed = ${common.monitor_speed}
build_flags =
-D MG_ENABLE_SSL=1
-D MG_ENABLE_HTTP_STREAMING_MULTIPART=1
-D MG_ENABLE_EXTRA_ERRORS_DESC=1
-D MG_SSL_MBED_DUMMY_RANDOM=1
-D MG_SSL_IF=MG_SSL_IF_MBEDTLS
-D MG_SSL_IF_MBEDTLS_FREE_CERTS=1
-D MG_ENABLE_SNTP=1
-D CS_PLATFORM=CS_P_ESP32
-D MO_MG_VERSION_614 ; use MG v6.14
-D ENABLE_WIRED_ETHERNET
-D MO_CUSTOM_WS
-D MO_DBG_LEVEL=MO_DL_INFO ; Uncomment to see OCPP info logs
-D MO_CUSTOM_DIAGNOSTICS ; Uncomment to see MO_CUSTOM_DIAGNOSTICS
-DMO_TRAFFIC_OUT
-D MO_NUMCONNECTORS=3
-D ARDUINOJSON_ENABLE_STD_STRING=1

board_build.partitions = min_spiffs.csv
upload_speed = 921600
monitor_filters =
esp32_exception_decoder`
#-----------------------------------------------------------------#

[matth-x]

I can remember that I also dealt with that "Invalid mbox" crash. The solution was to delay the Mongoose initialization until getting the IP address from the Arduino framework. It was a plain while (!ipConfigured){delay(1000);} loop before the MicroOcpp stuff in the setup() function.

[matth-x]

There's been another thread which describes exactly the same problem and the solution: #214