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#include <ESP8266WiFi.h>
const char *ssid = "SSID";
const char *password = "PASSWORD";
#define MAX_CLIENTS 5
WiFiServer server(23);
WiFiClient clients[MAX_CLIENTS];
void setup (void) {
int32_t channel = 0;
uint8_t bssid[6] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0};
pinMode(2, OUTPUT);
pinMode(0, OUTPUT);
// channel, bssid and IPAddress are optional but speed up the boot process
WiFi.begin(ssid, password, channel, bssid);
WiFi.config(IPAddress(0, 0, 0, 0), IPAddress(0, 0, 0, 0), IPAddress(255, 255, 255, 0));
while(WiFi.status() != WL_CONNECTED)
delay(500);
server.begin();
server.setNoDelay(true);
}
void loop(void) {
uint8_t i;
if (server.hasClient()) {
for (i=0; i<MAX_CLIENTS; i++) {
if (!clients[i] || !clients[i].connected()) {
if (clients[i]) clients[i].stop();
clients[i] = server.available();
continue;
}
}
server.available().stop(); // reject, no slots free
}
for (i=0; i<MAX_CLIENTS; i++) {
if (clients[i] && clients[i].connected()) {
uint8_t r;
while (clients[i].available()) {
r = clients[i].read();
switch (r) {
case 65: // 'A'
digitalWrite(2, HIGH); break;
case 66: // 'B'
digitalWrite(0, HIGH); break;
case 97: // 'a'
digitalWrite(2, LOW); break;
case 98: // 'b'
digitalWrite(0, LOW); break;
default:
clients[i].write(r); // echo back
}
clients[i].write(10); // line feed
}
}
}
delay(500);
}
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