Help understanding (new?) ethernet with W5500 module
Posted: Sat Jun 12, 2021 2:31 amHello,
esp8266 with w5500 module here
with core 3.0.0 w5500 and new ethernet library should be included, but i'm having hard time understanding how structurally it should work.
I created a test script, just included
#include <SPI.h>
#include <W5500lwIP.h>
and i could set up ethernet. That's good!
So why and when do i need the include of the ethernet librry itself?
#include <Ethernet.h>
Then i tried a simple NTP client.
Tried with
#include <EthernetUdp.h>
No luck. The dns name of the ntp server is not resolved.
I tried with
#include <WiFiUdp.h>
Same result, no dns resolution.
So i tried just to resolve dns names through lwip itself. Success with the dns_gethostbyname() function!
But ethernetudp (with underlying ethernet) and wifiudp (with underlying ESP8266wifi) resolve dns names with other functions not working.
So basically my question is: how do these libraries relates with each other? what should i do? When i begin the W5500 connection, the Ethernet does not receive the connection information (that are only accessible through lwip), so what?
please help
Thanks
esp8266 with w5500 module here
with core 3.0.0 w5500 and new ethernet library should be included, but i'm having hard time understanding how structurally it should work.
I created a test script, just included
#include <SPI.h>
#include <W5500lwIP.h>
and i could set up ethernet. That's good!
So why and when do i need the include of the ethernet librry itself?
#include <Ethernet.h>
Then i tried a simple NTP client.
Tried with
#include <EthernetUdp.h>
No luck. The dns name of the ntp server is not resolved.
I tried with
#include <WiFiUdp.h>
Same result, no dns resolution.
So i tried just to resolve dns names through lwip itself. Success with the dns_gethostbyname() function!
But ethernetudp (with underlying ethernet) and wifiudp (with underlying ESP8266wifi) resolve dns names with other functions not working.
So basically my question is: how do these libraries relates with each other? what should i do? When i begin the W5500 connection, the Ethernet does not receive the connection information (that are only accessible through lwip), so what?
please help
Thanks