Problem connecting to WiFi network from SPIFFS
Posted: Sun Dec 24, 2017 1:58 amHi, I'm writing some code for the ESP8266 that needs to connect to a WiFi network stored in SPIFFS.
The ESP is able to connect to a WiFi network without a problem as long as the credentials are hard-coded.
The moment I write the code to pull values from SPIFFS and store it in a struct, it all comes crashing down, and refuses to connect.
I have verified that the values being pulled out from the file is verbatim what I am hard coding.
Below is the snippets of my code that are related to the issue:
Initial SPIFFS stuff:
connectWiFi() method (Where I presume issue lies):
Does anyone have any thoughts or ideas on whats going on and how I can fix it?
I will add that I am running on the LATEST git version of the Arduino ESP package, as I also need to implement Enterprise WiFi connectivity options within my code, which only seems possible with the current GIT version.
Any help is greatly appreciated!
Thanks
The ESP is able to connect to a WiFi network without a problem as long as the credentials are hard-coded.
The moment I write the code to pull values from SPIFFS and store it in a struct, it all comes crashing down, and refuses to connect.
I have verified that the values being pulled out from the file is verbatim what I am hard coding.
Below is the snippets of my code that are related to the issue:
Initial SPIFFS stuff:
Code: Select all
SPIFFS.begin();
struct Config { // Simple structure for storing various settings
String WiFiSSID;
String WiFiPass;
...other variables here that are unrelated...
} config;
if (!SPIFFS.exists("/config.cfg")) {
...other code...
} else {
f = SPIFFS.open("/config.cfg", "r");
if (!f) {
Serial.println("file open failed");
}
Serial.println("Reading from SPIFFS file");
config.WiFiSSID = f.readStringUntil('\n');
config.WiFiPass = f.readStringUntil('\n');
... set other variables in struct unrelated to issue...
connectWiFi(); // Calls method to connect to the Stored WiFi credentials
}
connectWiFi() method (Where I presume issue lies):
Code: Select all
void connectWiFi() {
Serial.print("Connecting to '");
const char* wifissid = config.WiFiSSID.c_str(); // extract SSID from Struct
const char* wifipass = config.WiFiPass.c_str(); // Extract PASS from Struct
Serial.print(config.WiFiSSID.c_str());
Serial.println("'");
Serial.print("Pass:'");
Serial.print(config.WiFiPass.c_str());
Serial.println("'");
int cntr = 0; // Counter for how long before connection should time-out
// The below 3 lines are from me researching my issue for HOURS trying to figure out how to fix the issue, some said this helped them with similar issues. This has had no effect on the issue however.
WiFi.disconnect();
WiFi.setAutoConnect(true);
WiFi.mode(WIFI_STA);
WiFi.begin(wifissid, wifipass);
while (WiFi.status() != WL_CONNECTED) { // Loop unless we are connected to a network
delay(250);
Serial.print(".");
cntr++;
if (cntr > 100) {
Serial.println("Took too long to connect. breaking trying and starting access point..");
WiFi.mode(WIFI_AP); //switching to AP mode
WiFi.softAP("ESP8266");
Serial.println("CONFIG MODE");
break;
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println("IP address: ");
Serial.println(WiFi.localIP());
}
Does anyone have any thoughts or ideas on whats going on and how I can fix it?
I will add that I am running on the LATEST git version of the Arduino ESP package, as I also need to implement Enterprise WiFi connectivity options within my code, which only seems possible with the current GIT version.
Any help is greatly appreciated!
Thanks