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a bit of cleanup

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removed write on every connect of parameters, now it only writes parameters to FS if config portal is started and connection is successful
This commit is contained in:
Alex Tudorache
2016-01-08 12:51:10 +02:00
parent ab5902e273
commit 83177e9c55
3 changed files with 76 additions and 119 deletions
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examples/AutoConnectWithFSParameters/AutoConnectWithFSParameters.ino
+61 -45
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@@ -14,49 +14,61 @@ const char *mqtt_server = NULL;
const char *mqtt_port = "8080";
const char *blynk_token = "YOUR_BLYNK_TOKEN";
//flag for saving data
bool shouldSaveConfig = false;
//callback notifying us of the need to save config
void saveConfigCallback () {
Serial.println("Should save config");
shouldSaveConfig = true;
}
void setup() {
// put your setup code here, to run once:
Serial.begin(115200);
Serial.println();
//read configuration from FS json
//clean FS, for testing
//SPIFFS.format();
Serial.println("Mounting FS...");
//read configuration from FS json
Serial.println("mounting FS...");
if (!SPIFFS.begin()) {
Serial.println("Failed to mount file system");
//abort
return;
}
if (SPIFFS.begin()) {
Serial.println("mounted file system");
if (SPIFFS.exists("/config.json")) {
//file exists, reading and loading
Serial.println("reading config file");
File configFile = SPIFFS.open("/config.json", "r");
if (configFile) {
Serial.println("opened config file");
size_t size = configFile.size();
// Allocate a buffer to store contents of the file.
std::unique_ptr<char[]> buf(new char[size]);
if (SPIFFS.exists("/config.json")) {
//file exists, reading and loading
Serial.println("Reading config file");
File configFile = SPIFFS.open("/config.json", "r");
if (configFile) {
Serial.println("Opened config file");
size_t size = configFile.size();
// Allocate a buffer to store contents of the file.
std::unique_ptr<char[]> buf(new char[size]);
configFile.readBytes(buf.get(), size);
StaticJsonBuffer<200> jsonBuffer;
JsonObject& json = jsonBuffer.parseObject(buf.get());
json.printTo(Serial);
if (json.success()) {
Serial.println("\nparsed json");
configFile.readBytes(buf.get(), size);
StaticJsonBuffer<200> jsonBuffer;
JsonObject& json = jsonBuffer.parseObject(buf.get());
json.printTo(Serial);
if (json.success()) {
Serial.println("\nParsed json");
mqtt_server = json["mqtt_server"];
mqtt_port = json["mqtt_port"];
blynk_token = json["blynk_token"];
} else {
Serial.println("Failed to load json config");
mqtt_server = json["mqtt_server"];
mqtt_port = json["mqtt_port"];
blynk_token = json["blynk_token"];
} else {
Serial.println("failed to load json config");
}
}
}
} else {
Serial.println("failed to mount FS");
}
//end read
// The extra parameters to be configured (can be either global or just in the setup)
// After connecting, parameter.getValue() will get you the configured value
// id/name placeholder/prompt default length
@@ -64,11 +76,13 @@ void setup() {
WiFiManagerParameter custom_mqtt_port("port", "mqtt port", mqtt_port, 8);
WiFiManagerParameter custom_blynk_token("blynk", "blynk token", blynk_token, 32);
//WiFiManager
//Local intialization. Once its business is done, there is no need to keep it around
WiFiManager wifiManager;
//set config save notify callback
wifiManager.setSaveConfigCallback(saveConfigCallback);
//add all your parameters here
wifiManager.addParameter(&custom_mqtt_server);
wifiManager.addParameter(&custom_mqtt_port);
@@ -101,24 +115,26 @@ void setup() {
mqtt_server = custom_mqtt_server.getValue();
mqtt_port = custom_mqtt_port.getValue();
blynk_token = custom_blynk_token.getValue();
//save the custom parameters to FS
StaticJsonBuffer<200> jsonBuffer;
JsonObject& json = jsonBuffer.createObject();
json["mqtt_server"] = mqtt_server;
json["mqtt_port"] = mqtt_port;
json["blynk_token"] = blynk_token;
if (shouldSaveConfig) {
Serial.println("saving config");
StaticJsonBuffer<200> jsonBuffer;
JsonObject& json = jsonBuffer.createObject();
json["mqtt_server"] = mqtt_server;
json["mqtt_port"] = mqtt_port;
json["blynk_token"] = blynk_token;
File configFile = SPIFFS.open("/config.json", "w");
if (!configFile) {
Serial.println("Failed to open config file for writing");
return;
File configFile = SPIFFS.open("/config.json", "w");
if (!configFile) {
Serial.println("failed to open config file for writing");
}
json.printTo(Serial);
json.printTo(configFile);
configFile.close();
//end save
}
json.printTo(Serial);
json.printTo(configFile);
configFile.close();
//end save
}
void loop() {