can't reconnect to ESP8266 SoftAP
Posted: Sun Jul 09, 2017 5:24 amHi guys,
I have an issue with ESP8266 boards (nodeMCU, wemos D1, standalone ESP):
after one connection with androids phones (they works great) there is no possible to reconnect until ESP reset.
I have try latest Arduino IDE versions 1.8.2 a older, but same issue. ESP boards are also the latest (2.3.0 ).
Here is my code:
I have an issue with ESP8266 boards (nodeMCU, wemos D1, standalone ESP):
after one connection with androids phones (they works great) there is no possible to reconnect until ESP reset.
I have try latest Arduino IDE versions 1.8.2 a older, but same issue. ESP boards are also the latest (2.3.0 ).
Here is my code:
Code: Select all
#include <EEPROM.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <ESP8266WebServer.h>
#define ONE_WIRE_BUS_1 4
#define ONE_WIRE_BUS_2 5
#define relej 13
OneWire oneWire_topli(ONE_WIRE_BUS_1);
OneWire oneWire_hladni(ONE_WIRE_BUS_2);
DallasTemperature sensor_topli(&oneWire_topli);
DallasTemperature sensor_hladni(&oneWire_hladni);
ESP8266WebServer server(80);
int dif_temp,gasenje;
bool prvo=false;
void setup() {
pinMode(relej,OUTPUT);
digitalWrite(relej,0);
EEPROM.begin(4);
dif_temp=EEPROM.read(0);
gasenje=EEPROM.read(1);
EEPROM.end();
sensor_topli.begin();
sensor_hladni.begin();
WiFi.mode(WIFI_AP);
WiFi.softAP("termostat", "12345678",10);
delay(2000);
server.on("/submit",handleSubmit);
server.on("/", handleRoot);
server.begin();
}
void loop() {
server.handleClient();
digitalWrite(relej,termostat());
}
void handleRoot() {
EEPROM.begin(4);
dif_temp=EEPROM.read(0);
gasenje=EEPROM.read(1);
EEPROM.end();
// put your main code here, to run repeatedly:
char hladna[8];
char topla[8];
float f=daj_topli();
ftoa(topla, f, 1);
f=daj_hladni();
ftoa(hladna,f,1);
char temp[1090];
snprintf ( temp, 1089,
"<html>\
<head>\
<meta http-equiv='refresh' content='7'>\
<title>wifi termostat</title>\
<style>\
.button {\
background-color: #4CAF50;\
border: none;\
color: white;\
padding: 15px 32px;\
text-align: center;\
text-decoration: none;\
display: inline-block;\
font-size: 26px;\
margin: 4px 2px;\
cursor: pointer;\
} body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; font-size: 30px; }\
</style>\
</head>\
<body>\
<h1>Wifi termostat</h1>\
<p>Topla: %s C</p>\
<p>Hladna: %s C</p>\
<form action='http://192.168.4.1/submit' method='POST'>\
Diferencijalna temperatura(*0.5C):<input type='text' name='fname' value='%d' maxlength='1' size='3' ><br>\
Temperatura izjednacenja(*0.5C):<input type='text' name='temp' value='%d' maxlength='1' size='3'><br>\
<input type='submit' class='button' value='Podesi'>\
<a href='..' class='button'>Osvjezi</a>\
</form>\
</body>\
</html>",
topla,hladna,dif_temp,gasenje
);
server.send(200, "text/html", temp);
}
float daj_topli(void){
sensor_topli.requestTemperatures();
delay(100);
return sensor_topli.getTempCByIndex(0);
}
float daj_hladni(void){
sensor_hladni.requestTemperatures();
delay(100);
return sensor_hladni.getTempCByIndex(0);
}
void handleSubmit()
{
if (server.args() > 0 ) {
for ( uint8_t i = 0; i < server.args(); i++ ){
if (server.argName(i) == "fname") { uint8_t temp=server.arg(i).toInt();
EEPROM.begin(4);
EEPROM.write(0, temp);
EEPROM.commit();
}
if (server.argName(i) == "temp") { uint8_t temp=server.arg(i).toInt();
EEPROM.begin(4);
EEPROM.write(1, temp);
EEPROM.commit();
}
}
}
char temp[500];
snprintf ( temp, 500,
"<html>\
<body>\
<head>\
<title>WiFi termostat</title>\
<style>\
body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
</style>\
</head>\
<body><br><br>\
<p>Postavke spremljene</p>\
<a href='..'><button>NAZAD</button></a>\
</body>\
</html>");
server.send(200, "text/html", temp);
}
char *ftoa(char *a, double f, int precision)
{
long p[] = {0,10,100,1000,10000,100000,1000000,10000000,100000000};
char *ret = a;
long heiltal = (long)f;
itoa(heiltal, a, 10);
while (*a != '\0') a++;
*a++ = '.';
long desimal = abs((long)((f - heiltal) * p[precision]));
itoa(desimal, a, 10);
return ret;
}
bool termostat(void){
float g,dif;
dif=dif_temp*0.5;
g=gasenje*0.5;
float a=daj_topli();
float b=daj_hladni();
if (a-b>dif) {prvo=true; return true;}
if (a-b>g&&prvo==true) return true;
prvo=false;
return false;
}
