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Merge pull request #256 from bcsanches/master

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Keep Ethernet singleton "alive" until connection is established.
This commit is contained in:
habazut 2022-09-05 20:34:11 +02:00 committed by GitHub
commit 2e9e614ad5
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2 changed files with 84 additions and 36 deletions
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108
EthernetInterface.cpp
View File

@ -36,7 +36,16 @@ EthernetInterface * EthernetInterface::singleton=NULL;
void EthernetInterface::setup()
{
singleton=new EthernetInterface();
if (!singleton->connected) singleton=NULL;
DIAG(F("Ethernet begin OK."));
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
DIAG(F("Ethernet shield not found"));
delete singleton;
singleton=NULL;
return;
}
};
@ -61,37 +70,17 @@ EthernetInterface::EthernetInterface()
return;
}
#endif
DIAG(F("begin OK."));
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
DIAG(F("Ethernet shield not found"));
return;
}
}
unsigned long startmilli = millis();
while ((millis() - startmilli) < 5500) // Loop to give time to check for cable connection
{
if (Ethernet.linkStatus() == LinkON)
break;
DIAG(F("Ethernet waiting for link (1sec) "));
delay(1000);
}
if (Ethernet.linkStatus() == LinkOFF) {
DIAG(F("Ethernet cable not connected"));
return;
}
connected=true;
IPAddress ip = Ethernet.localIP(); // reassign the obtained ip address
server = new EthernetServer(IP_PORT); // Ethernet Server listening on default port IP_PORT
server->begin();
LCD(4,F("IP: %d.%d.%d.%d"), ip[0], ip[1], ip[2], ip[3]);
LCD(5,F("Port:%d"), IP_PORT);
outboundRing=new RingStream(OUTBOUND_RING_SIZE);
/**
* @brief Cleanup any resources
*
* @return none
*/
EthernetInterface::~EthernetInterface()
{
delete server;
delete outboundRing;
}
/**
@ -100,7 +89,8 @@ EthernetInterface::EthernetInterface()
*/
void EthernetInterface::loop()
{
if (!singleton) return;
if(!singleton || (!singleton->checkLink()))
return;
switch (Ethernet.maintain())
{
@ -125,6 +115,60 @@ void EthernetInterface::loop()
}
/**
* @brief Checks ethernet link cable status and detects when it connects / disconnects
*
* @return true when cable is connected, false otherwise
*/
bool EthernetInterface::checkLink()
{
if (Ethernet.linkStatus() == LinkON)
{
//if we are not connected yet, setup a new server
if(!connected)
{
DIAG(F("Ethernet cable connected"));
connected=true;
IPAddress ip = Ethernet.localIP(); // reassign the obtained ip address
server = new EthernetServer(IP_PORT); // Ethernet Server listening on default port IP_PORT
server->begin();
LCD(4,F("IP: %d.%d.%d.%d"), ip[0], ip[1], ip[2], ip[3]);
LCD(5,F("Port:%d"), IP_PORT);
//
//only create a outboundRing it none exists, this may happen if the cable gets disconnected and connected again
if(!outboundRing)
outboundRing=new RingStream(OUTBOUND_RING_SIZE);
}
return true;
}
else if(connected)
{
DIAG(F("Ethernet cable disconnected"));
connected=false;
//clean up any client
for (byte socket = 0; socket < MAX_SOCK_NUM; socket++)
{
if(clients[socket].connected())
clients[socket].stop();
}
/* tear down server */
delete server;
server = nullptr;
LCD(4,F("IP: None"));
}
return false;
}
void EthernetInterface::loop2()
{
// get client from the server

8
EthernetInterface.h
View File

@ -59,11 +59,15 @@ class EthernetInterface {
static EthernetInterface * singleton;
bool connected;
EthernetInterface();
~EthernetInterface();
void loop2();
EthernetServer * server;
bool checkLink();
EthernetServer * server = nullptr;
EthernetClient clients[MAX_SOCK_NUM]; // accept up to MAX_SOCK_NUM client connections at the same time; This depends on the chipset used on the Shield
uint8_t buffer[MAX_ETH_BUFFER+1]; // buffer used by TCP for the recv
RingStream * outboundRing;
RingStream * outboundRing = nullptr;
};