Very slow connection to WiFi - almost 3.2 seconds, even if the static IP is used.

[robertgregor]

Hi,
I have latest 1.0.3 rc1 installed and have simple sketch:

#include <WiFi.h>

boolean connected=false;

IPAddress getIpAddr(String ip) {
IPAddress addr;
int iparr[4];
iparr[0] = ip.toInt();
for (int i=1; i<4; i++) {
ip.remove(0, ip.indexOf('.')+1);
iparr[i] = ip.toInt();
}
return IPAddress(iparr[0], iparr[1], iparr[2], iparr[3]);
}

void connectToWifiNoWait(String ssid, String pwd, String ip, String gw, String mask, String dns1, String dns2, String bssid, String chnl ) {
if (WiFi.status() == WL_CONNECTED) return;
Serial.println(PSTR("Connecting wifi..."));
WiFi.persistent(true);
WiFi.setAutoConnect(true);
WiFi.setAutoReconnect(true);
if (ip.length() != 0) {
WiFi.config(getIpAddr(ip), getIpAddr(gw), getIpAddr(mask), getIpAddr(dns1), getIpAddr(dns2));
Serial.println(PSTR("Config called..."));
}
if ((ssid.length() != 0) && (pwd.length() == 0)) {
WiFi.begin(ssid.c_str());
Serial.println(PSTR("Begin with ssid called..."));
} else if ((ssid.length() != 0) && (pwd.length() != 0)) {
if (bssid.length() == 0) {
WiFi.begin(ssid.c_str(), pwd.c_str());
Serial.println(PSTR("Begin with ssid and password called..."));
} else {
byte iparr[6];
for (int i=0; i<6; i++) {
String part = "0x" + bssid.substring(0,bssid.indexOf(':'));
bssid.remove(0, bssid.indexOf(':')+1);
iparr[i] = strtol(part.c_str(),NULL,0);
}
WiFi.begin(ssid.c_str(), pwd.c_str(), chnl.toInt(), iparr);
Serial.println(PSTR("Begin with ssid, password, channel and bssid called..."));
}
}
}

void setup() {
Serial.begin(115200);
connectToWifiNoWait("Bob", "xxxxx", "192.168.1.50", "192.168.1.1", "255.255.255.0", "94.142.233.120", "94.142.233.140", "F8:D1:11:24:B3:84", "4" );
WiFi.setAutoReconnect(true);
}

void loop() {
// put your main code here, to run repeatedly:
if (WiFi.status() == WL_CONNECTED) {
if (!connected) {
Serial.print("Connected: ");
Serial.println(millis(), DEC);
connected=true;
Serial.printf("IP: %d.%d.%d.%d, time: %d",WiFi.localIP()[0],WiFi.localIP()[1],WiFi.localIP()[2],WiFi.localIP()[3], millis());
}
}
}

As is seen, I will do simple config and then will try to connect. My problem is, that connection to wifi takes almost 3.5 seconds:

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0018,len:4
load:0x3fff001c,len:928
ho 0 tail 12 room 4
load:0x40078000,len:8424
ho 0 tail 12 room 4
load:0x40080400,len:5868
entry 0x4008069c
Connecting wifi...
Config called...
Begin with ssid, password, channel and bssid called...
Connected: 3499
IP: 192.168.1.50, time: 3499

Any idea, what can be the problem? Almost the same code using esp 8266 was working in 100 - 200 ms.

[cendev]

Ten months and issue standing still :) Just because #1675, it costs ous money, time and some sleepless nights. Using ESP32 modules would allow us to produce more robust sensors yet we are still using attiny13 + 8266 combo just to wake up from deep sleep and report under a second.

Can't give up on WPA2 to connect faster, as the issue only seen on WPA networks..
Can't give up on "Report in less than a second"
Can't give up on 8266s..

Even on IDF problem persists.

[stale]

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[stale]

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