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Single Client Telnet Server example
extern "C" {
enum sleep_type {
NONE_SLEEP_T = 0,
LIGHT_SLEEP_T,
MODEM_SLEEP_T
};
bool wifi_set_sleep_type(enum sleep_type type);
void system_set_os_print(uint8 onoff);
void ets_install_putc1(void* routine);
}
void _u0_putc(char c){
while(((U0S >> USTXC) & 0x7F) == 0x7F);
U0F = c;
}
const char* ap_ssid = "esp8266-uart-srv";
const char* ssid = "abcdefgh";
const char* password = "1234567890";
AsyncServer server(23);
AsyncClient *client;
void onPoll(void *obj, AsyncClient* c){
//os_printf("p:%lu\n", millis());
}
void onError(void *obj, AsyncClient* c, int8_t error){
os_printf("e:%d\n", error);
}
void onAck(void *obj, AsyncClient* c, size_t len, uint32_t time){
os_printf("a:%u:%u\n", len, time);
}
void onDisconnect(void *obj, AsyncClient* c){
os_printf("d\n");
c->free();
delete c;
client = NULL;
}
void onTimeout(void *obj, AsyncClient* c, uint32_t time){
os_printf("t:%u\n", time);
client->close();
}
void onData(void *obj, AsyncClient* c, void *buf, size_t len){
os_printf("rx:%u\n", len);
size_t i;
for(i=0; i<len; i++){
while(((U0S >> USTXC) & 0x7F) != 0);
U0F = ((uint8_t*)buf)[i];
}
}
void onClient(void *obj, AsyncClient* c){
if(client){
os_printf("r\n");
if(client->connected())
client->close();
}
os_printf("c\n");
client = c;
client->onError(onError);
client->onAck(onAck);
client->onDisconnect(onDisconnect);
client->onTimeout(onTimeout);
client->onData(onData);
//client->onPoll(onPoll);
}
void setup() {
Serial.begin(115200);
ets_install_putc1((void *) &_u0_putc);
system_set_os_print(1);
WiFi.mode(WIFI_AP_STA);
WiFi.softAP(ap_ssid, password);
WiFi.begin(ssid, password);
os_printf("AP: %s\n", ap_ssid);
ArduinoOTA.begin();
server.onClient(onClient, 0);
server.begin();
}
static uint32_t lastTest = 0;
void loop() {
ArduinoOTA.handle();
if(Serial.available()){
uint8_t * sbuf = (uint8_t *)malloc(1460);
size_t len = 0;
while(Serial.available() && len < 1460){
sbuf[len++] = Serial.read();
if(!Serial.available()) yield();
}
if(client && client->connected()){
while(!client->canSend()) yield();
os_printf("x:%u\n", len);
client->write((const char *)sbuf, len);
} else {
os_printf("m:%u\n", len);
}
free(sbuf);
}
uint32_t newTest = ESP.getFreeHeap();
if(newTest != lastTest){
lastTest = newTest;
os_printf("%u\r\n", newTest);
}
}
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