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Ethgernet simplification

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This commit is contained in:
Asbelos 2024-08-18 20:32:05 +01:00
parent b62661c337
commit 5db19a0fb8
2 changed files with 72 additions and 161 deletions
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218
EthernetInterface.cpp
View File

@ -32,76 +32,37 @@
extern void looptimer(unsigned long timeout, const FSH* message);
EthernetInterface * EthernetInterface::singleton=NULL;
bool EthernetInterface::connected=false;
EthernetServer * EthernetInterface::server= nullptr;
EthernetClient EthernetInterface::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 EthernetInterface::buffer[MAX_ETH_BUFFER+1]; // buffer used by TCP for the recv
RingStream * EthernetInterface::outboundRing = nullptr;
/**
* @brief Setup Ethernet Connection
*
*/
void EthernetInterface::setup()
{
if (singleton!=NULL) {
DIAG(F("Prog Error!"));
return;
}
if ((singleton=new EthernetInterface()))
return;
DIAG(F("Ethernet not initialized"));
};
connected=false;
#ifdef IP_ADDRESS
static IPAddress myIP(IP_ADDRESS);
#endif
/**
* @brief Aquire IP Address from DHCP and start server
*
* @return true
* @return false
*/
EthernetInterface::EthernetInterface()
{
byte mac[6];
DCCTimer::getSimulatedMacAddress(mac);
connected=false;
#ifdef IP_ADDRESS
Ethernet.begin(mac, myIP);
#else
DIAG(F("Ethernet begin"));
if (Ethernet.begin(mac) == 0)
{
DIAG(F("Ethernet.begin FAILED"));
return;
}
#endif
if (Ethernet.hardwareStatus() == EthernetNoHardware) {
DIAG(F("Ethernet shield not found or W5100"));
}
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);
}
// now we either do have link of we have a W5100
// where we do not know if we have link. That's
// the reason to now run checkLink.
// CheckLinks sets up outboundRing if it does
// not exist yet as well.
checkLink();
auto ip = Ethernet.localIP(); // look what IP was obtained (dynamic or static)
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);
connected=true;
}
/**
* @brief Cleanup any resources
*
* @return none
*/
EthernetInterface::~EthernetInterface() {
delete server;
delete outboundRing;
}
/**
* @brief Main loop for the EthernetInterface
@ -109,76 +70,28 @@ EthernetInterface::~EthernetInterface() {
*/
void EthernetInterface::loop()
{
if (!singleton || (!singleton->checkLink()))
return;
if (!connected) return;
//DIAG(F("maintain"));
switch (Ethernet.maintain()) {
case 1:
//renewed fail
DIAG(F("Ethernet Error: renewed fail"));
singleton=NULL;
connected=false;
return;
case 3:
//rebind fail
DIAG(F("Ethernet Error: rebind fail"));
singleton=NULL;
connected=false;
return;
default:
//nothing happened
//DIAG(F("maintained"));
break;
}
looptimer(8000, F("Ethloop after maintain"));
singleton->loop2();
}
// looptimer(8000, F("Ethloop after maintain"));
/**
* @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() != LinkOFF) { // check for not linkOFF instead of linkON as the W5100 does return LinkUnknown
//if we are not connected yet, setup a new server
if(!connected) {
DIAG(F("Ethernet cable connected"));
connected=true;
#ifdef IP_ADDRESS
Ethernet.setLocalIP(myIP); // for static IP, set it again
#endif
IPAddress ip = Ethernet.localIP(); // look what IP was obtained (dynamic or static)
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 { // 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() {
if (!outboundRing) { // no idea to call loop2() if we can't handle outgoing data in it
if (Diag::ETHERNET) DIAG(F("No outboundRing"));
return;
}
// get client from the server
EthernetClient client = server->accept();
auto client = server->accept();
// check for new client
if (client)
@ -202,53 +115,56 @@ void EthernetInterface::loop2() {
// check for incoming data from all possible clients
for (byte socket = 0; socket < MAX_SOCK_NUM; socket++)
{
if (clients[socket]) {
if (!clients[socket]) continue; // socket is not in use
// read bytes from a client
int count = clients[socket].read(buffer, MAX_ETH_BUFFER);
looptimer(8000, F("Ethloop2 read"));
if (count > 0) {
if (Diag::ETHERNET) DIAG(F("Ethernet: available socket=%d,count=%d"), socket, count);
buffer[count] = '\0'; // terminate the string properly
if (Diag::ETHERNET) DIAG(F("buffer:%e"), buffer);
// execute with data going directly back
CommandDistributor::parse(socket,buffer,outboundRing);
looptimer(2000, F("Ethloop2 parse"));
return; // limit the amount of processing that takes place within 1 loop() cycle.
} else if (count == 0) {
// The client has disconnected
clients[socket].stop();
CommandDistributor::forget(socket);
if (Diag::ETHERNET) DIAG(F("Ethernet: disconnect %d "), socket);
}
// fall through if count = -1 (no bytes available)
}
}
looptimer(8000, F("Ethloop2 after incoming"));
// read any bytes from this client
auto count = clients[socket].read(buffer, MAX_ETH_BUFFER);
if (count<0) continue; // -1 indicates nothing to read
if (count > 0) { // we have incoming data
buffer[count] = '\0'; // terminate the string properly
if (Diag::ETHERNET) DIAG(F("Ethernet s=%d, c=%d b=:%e"), socket, count, buffer);
// execute with data going directly back
CommandDistributor::parse(socket,buffer,outboundRing);
//looptimer(5000, F("Ethloop2 parse"));
return; // limit the amount of processing that takes place within 1 loop() cycle.
}
// count=0 The client has disconnected
clients[socket].stop();
CommandDistributor::forget(socket);
if (Diag::ETHERNET) DIAG(F("Ethernet: disconnect %d "), socket);
}
//looptimer(8000, F("Ethloop2 after incoming"));
WiThrottle::loop(outboundRing);
looptimer(8000, F("Ethloop after Withrottleloop"));
//looptimer(8000, F("Ethloop after Withrottleloop"));
// handle at most 1 outbound transmission
int socketOut=outboundRing->read();
if (socketOut >= MAX_SOCK_NUM) {
DIAG(F("Ethernet outboundRing socket=%d error"), socketOut);
} else if (socketOut >= 0) {
int count=outboundRing->count();
{
char tmpbuf[count+1]; // one extra for '\0'
for(int i=0;i<count;i++) {
tmpbuf[i] = outboundRing->read();
}
tmpbuf[count]=0;
if (Diag::ETHERNET)
DIAG(F("Ethernet reply socket=%d, count=%d, buf:%e"), socketOut,count,tmpbuf);
clients[socketOut].write(tmpbuf,count);
}
// do trust write does its thing and not flush
// clients[socketOut].flush(); //maybe
}
looptimer(8000, F("Ethloop after outbound"));
auto socketOut=outboundRing->read();
if (socketOut<0) return; // no outbound pending
if (socketOut >= MAX_SOCK_NUM) {
// This is a catastrophic code failure and unrecoverable.
DIAG(F("Ethernet outboundRing s=%d error"), socketOut);
connected=false;
return;
}
auto count=outboundRing->count();
{
char tmpbuf[count+1]; // one extra for '\0'
for(int i=0;i<count;i++) {
tmpbuf[i] = outboundRing->read();
}
tmpbuf[count]=0;
if (Diag::ETHERNET) DIAG(F("Ethernet reply s=%d, c=%d, b:%e"),
socketOut,count,tmpbuf);
clients[socketOut].write(tmpbuf,count);
}
//looptimer(8000, F("Ethloop after outbound"));
}
#endif

15
EthernetInterface.h
View File

@ -56,16 +56,11 @@ class EthernetInterface {
static void loop();
private:
static EthernetInterface * singleton;
bool connected;
EthernetInterface();
~EthernetInterface();
void loop2();
bool checkLink();
EthernetServer * server = NULL;
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 = NULL;
static bool connected;
static EthernetServer * server;
static 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
static uint8_t buffer[MAX_ETH_BUFFER+1]; // buffer used by TCP for the recv
static RingStream * outboundRing;
};
#endif