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#include <FS.h> //this needs to be first, or it all crashes and burns...
#include <ESP8266WiFi.h> //https://github.com/esp8266/Arduino
//needed for library
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h> //https://github.com/tzapu/WiFiManager
#define ARDUINOJSON_DECODE_UNICODE 1
#include <ArduinoJson.h> //https://github.com/bblanchon/ArduinoJson
//for LED status
#include <Ticker.h>
Ticker ticker;
const byte RELAY_PIN = 12;
const byte LED_PIN = 13; // 13 for Sonoff S20, 2 for NodeMCU/ESP12 internal LED
const byte BUTTON_PIN = 0;
void tick() {
//toggle state
bool state = digitalRead(LED_PIN); // get the current state of LED_PIN pin
digitalWrite(LED_PIN, !state); // set pin to the opposite state
}
//gets called when WiFiManager enters configuration mode (for LED status)
void configModeCallback (WiFiManager *myWiFiManager) {
Serial.println("Entered config mode");
Serial.println(WiFi.softAPIP());
//if you used auto generated SSID, print it
Serial.println(myWiFiManager->getConfigPortalSSID());
//entered config mode, make led toggle faster
ticker.attach(0.2, tick);
}
//define your default values here, if there are different values in config.json, they are overwritten.
String matrixUsername;
String matrixPassword;
String matrixRoom = "!ppCFWxNWJeGbyoNZVw:matrix.fuz.re"; // #entropy:matrix.fuz.re
String matrixMessage = "Test";
//flag for saving data
bool shouldSaveConfig = false;
//callback notifying us of the need to save config
void saveConfigCallback () {
Serial.println(F("Should save config"));
shouldSaveConfig = true;
}
WiFiManager wifiManager;
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#include <ESP8266HTTPClient.h> // for https://github.com/matt-williams/matrix-esp8266/blob/master/matrix-esp8266.ino
HTTPClient http;
String accessToken;
String lastMessageToken;
String createLoginBody(String user, String password) {
String buffer;
StaticJsonDocument<1000> jsonBuffer;
//JsonObject& root = jsonBuffer.createObject();
jsonBuffer["type"] = "m.login.password";
jsonBuffer["user"] = user;
jsonBuffer["password"] = password;
jsonBuffer["identifier"]["type"] = "m.id.user";
jsonBuffer["identifier"]["user"] = user;
serializeJson(jsonBuffer, buffer);
return buffer;
}
String createMessageBody(String message) {
String buffer;
StaticJsonDocument<1000> jsonBuffer;
jsonBuffer["msgtype"] = "m.text";
jsonBuffer["body"] = message;
serializeJson(jsonBuffer, buffer);
return buffer;
}
bool login(String user, String password) {
bool success = false;
String buffer;
buffer = createLoginBody(user.substring(0, user.indexOf(":")), password);
String url = "http://corsanywhere.glitch.me/https://" + user.substring(user.indexOf(":") + 1) + "/_matrix/client/r0/login";
// Serial.printf("POST %s\n", url.c_str());
http.begin(url);
http.addHeader("Content-Type", "application/json");
int rc = http.POST(buffer);
Serial.printf("buffer %s\n", buffer.c_str());
if (rc > 0) {
Serial.printf("Login return code %d\n", rc);
if (rc == HTTP_CODE_OK) {
String body = http.getString();
StaticJsonDocument<1000> jsonBuffer;
deserializeJson(jsonBuffer, body);
String myAccessToken = jsonBuffer["access_token"];
accessToken = String(myAccessToken.c_str());
Serial.println(accessToken);
success = true;
}
} else {
Serial.printf("Error: %s\n", http.errorToString(rc).c_str());
}
return success;
}
bool sendMessage(String roomId, String message) {
bool success = false;
String buffer;
buffer = createMessageBody(message);
String url = "http://corsanywhere.glitch.me/https://" + roomId.substring(roomId.indexOf(":") + 1) + "/_matrix/client/r0/rooms/" + roomId + "/send/m.room.message/" + String(millis()) + "?access_token=" + accessToken + "&limit=1";
Serial.printf("PUT %s\n", url.c_str());
http.begin(url);
int rc = http.sendRequest("PUT", buffer);
if (rc > 0) {
// Serial.printf("%d\n", rc);
if (rc == HTTP_CODE_OK) {
success = true;
}
} else {
Serial.printf("Error: %s\n", http.errorToString(rc).c_str());
}
return success;
}
bool mentionedOnMatrix = false;
bool getMessages(String roomId) {
bool success = false;
String url = "http://corsanywhere.glitch.me/https://" + roomId.substring(roomId.indexOf(":") + 1) + "/_matrix/client/r0/rooms/" + roomId + "/messages?access_token=" + accessToken + "&limit=1";
if (lastMessageToken == "") {
url += "&dir=b";
} else {
url += "&dir=f&from=" + lastMessageToken;
}
Serial.printf("GET %s\n", url.c_str());
http.begin(url);
int rc = http.GET();
if (rc > 0) {
Serial.printf("%d\n", rc);
if (rc == HTTP_CODE_OK) {
String body = http.getString();
StaticJsonDocument<1000> jsonBuffer;
deserializeJson(jsonBuffer, body);
if (lastMessageToken != "") {
JsonArray chunks = jsonBuffer["chunk"];
JsonObject chunk = chunks[0];
String format = chunk["format"];
JsonObject content = chunk["content"];
if (content.containsKey("formatted_body")) {
String formatted_body = content["formatted_body"];
Serial.println(formatted_body);
if (formatted_body.indexOf("<a href=\"https://matrix.to/#/@" + matrixUsername + "\">presence</a>") >= 0) {
mentionedOnMatrix = true;
}
}
if (content.containsKey("body")) {
String body = content["body"];
Serial.println(body);
if (body.indexOf(matrixUsername.substring(0, matrixUsername.indexOf(":")) + ":") == 0 || body.indexOf("@" + matrixUsername) >= 0) {
mentionedOnMatrix = true;
}
}
//read receipt
if (chunk.containsKey("event_id")) {
String event_id = chunk["event_id"];
String receiptUrl = "http://corsanywhere.glitch.me/https://" + roomId.substring(roomId.indexOf(":") + 1) + "/_matrix/client/r0/rooms/" + roomId + "/receipt/m.read/" + event_id + "?access_token=" + accessToken + "&limit=1";
http.begin(receiptUrl);
http.addHeader("Content-Type", "application/json");
http.POST("");
String receiptBody = http.getString();
Serial.println("Receipt "+receiptBody);
}
}
String myLastMessageToken = jsonBuffer["end"];
lastMessageToken = String(myLastMessageToken.c_str());
//Serial.println(lastMessageToken);
success = true;
}
} else {
Serial.printf("Error: %s\n", http.errorToString(rc).c_str());
}
return success;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void morseSOSLED() { // ... ___ ...
for (int i = 0; i < 3; i++) {
digitalWrite(LED_PIN, LOW); // lit up
delay(100);
digitalWrite(LED_PIN, HIGH); // lit down
delay(100);
}
delay(50);
for (int i = 0; i < 3; i++) {
digitalWrite(LED_PIN, LOW); // lit up
delay(300);
digitalWrite(LED_PIN, HIGH); // lit down
delay(100);
}
delay(50);
for (int i = 0; i < 3; i++) {
digitalWrite(LED_PIN, LOW); // lit up
delay(100);
digitalWrite(LED_PIN, HIGH); // lit down
delay(100);
}
delay(500);
}
bool loggedInMatrix = false;
void setup() {
Serial.begin(115200);
Serial.println();
//set relay pin as output
pinMode(RELAY_PIN, OUTPUT);
//set led pin as output
pinMode(LED_PIN, OUTPUT);
//set button pin as input
pinMode(BUTTON_PIN, INPUT);
// start ticker with 0.5 because we start in AP mode and try to connect
ticker.attach(0.6, tick);
Serial.println(F("mounting FS..."));
if (SPIFFS.begin()) {
Serial.println(F("mounted file system"));
if (SPIFFS.exists("/config.json")) {
//file exists, reading and loading
Serial.println(F("reading config file"));
File configFile = SPIFFS.open("/config.json", "r");
if (configFile) {
Serial.println(F("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);
StaticJsonDocument<800> jsonBuffer;
auto error = deserializeJson(jsonBuffer, buf.get());
if (error) {
Serial.print(F("deserializeJson() failed with code "));
Serial.println(error.c_str());
return;
} else {
Serial.println(F("deserializeJson() successful:"));
serializeJsonPretty(jsonBuffer, Serial);
Serial.println();
String m0 = jsonBuffer["matrixUsername"];
matrixUsername = m0;
String m1 = jsonBuffer["matrixPassword"];
matrixPassword = m1;
String m2 = jsonBuffer["matrixRoom"];
matrixRoom = m2;
String m3 = jsonBuffer["matrixMessage"];
matrixMessage = m3;
}
configFile.close();
}
}
} else {
Serial.println(F("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
WiFiManagerParameter customMatrixUsername("Matrix username", "Matrix username", matrixUsername.c_str(), 50);
WiFiManagerParameter customMatrixPassword("Matrix password", "Matrix password", matrixPassword.c_str(), 50);
WiFiManagerParameter customMatrixRoom("Matrix room", "Matrix room", matrixRoom.c_str(), 200);
WiFiManagerParameter customMatrixMessage("Matrix message", "Matrix message", matrixMessage.c_str(), 500);
//WiFiManager
//Local intialization. Once its business is done, there is no need to keep it around
//WiFiManager wifiManager;
//reset settings - for testing
//wifiManager.resetSettings();
//set callback that gets called when connecting to previous WiFi fails, and enters Access Point mode (for status LED)
wifiManager.setAPCallback(configModeCallback);
//set config save notify callback
wifiManager.setSaveConfigCallback(saveConfigCallback);
//set static ip
// wifiManager.setSTAStaticIPConfig(IPAddress(10,0,1,99), IPAddress(10,0,1,1), IPAddress(255,255,255,0));
//add all your parameters here
wifiManager.addParameter(&customMatrixUsername);
wifiManager.addParameter(&customMatrixPassword);
wifiManager.addParameter(&customMatrixRoom);
wifiManager.addParameter(&customMatrixMessage);
//reset settings - for testing
//wifiManager.resetSettings();
//set minimu quality of signal so it ignores AP's under that quality
//defaults to 8%
//wifiManager.setMinimumSignalQuality();
//sets timeout until configuration portal gets turned off
//useful to make it all retry or go to sleep
//in seconds
//wifiManager.setTimeout(120);
//fetches ssid and pass and tries to connect
//if it does not connect it starts an access point with the specified name
//here "AutoConnectAP"
//and goes into a blocking loop awaiting configuration
if (!wifiManager.autoConnect()) {
Serial.println(F("failed to connect and hit timeout"));
delay(3000);
//reset and try again, or maybe put it to deep sleep
ESP.reset();
delay(5000);
}
//if you get here you have connected to the WiFi
Serial.println(F("connected...yeey :)"));
ticker.detach();
//keep LED on
digitalWrite(LED_PIN, LOW);
//read updated parameters
matrixUsername = customMatrixUsername.getValue();
matrixPassword = customMatrixPassword.getValue();
matrixRoom = customMatrixRoom.getValue();
matrixMessage = customMatrixMessage.getValue();
//save the custom parameters to FS
if (shouldSaveConfig) {
Serial.println(F("saving config"));
StaticJsonDocument<800> jsonBuffer;
jsonBuffer["matrixUsername"] = matrixUsername;
jsonBuffer["matrixPassword"] = matrixPassword;
jsonBuffer["matrixRoom"] = matrixRoom;
jsonBuffer["matrixMessage"] = matrixMessage;
File configFile = SPIFFS.open("/config.json", "w");
if (!configFile) {
Serial.println(F("failed to open config file for writing"));
}
serializeJson(jsonBuffer, Serial);
Serial.println();
serializeJson(jsonBuffer, configFile);
configFile.close();
//end save
}
Serial.println(F("local ip:"));
Serial.println(WiFi.localIP());
http.setReuse(true);
loggedInMatrix = login(matrixUsername, matrixPassword);
if (loggedInMatrix) {
Serial.println("Sucessfully athenticated");
//keep LED on
digitalWrite(LED_PIN, LOW);
//light up the light
digitalWrite(RELAY_PIN, HIGH);
} else {
//switch LED off
digitalWrite(LED_PIN, HIGH);
//power down the light
digitalWrite(RELAY_PIN, LOW);
}
}
bool buttonState = HIGH;
bool previousButtonState = HIGH;
long previousMillis = 0;
const long getMatrixMessagesInterval = 5000;
unsigned long pressedTime = millis();
void loop() {
buttonState = digitalRead(BUTTON_PIN);
if (buttonState == LOW && previousButtonState == HIGH) { // long press handling, reset settings https://forum.arduino.cc/index.php?topic=276789.msg1947963#msg1947963
pressedTime = millis();
}
if (buttonState == LOW && previousButtonState == LOW && (millis() - pressedTime) > 5000) {
wifiManager.resetSettings();
SPIFFS.format();
delay(500);
ESP.reset();
}
if (!loggedInMatrix) { // send SOS in morse
morseSOSLED();
loggedInMatrix = login(matrixUsername, matrixPassword);
return;
}
unsigned long currentMillis = millis();
if (currentMillis - previousMillis > getMatrixMessagesInterval) {
previousMillis = currentMillis;
if (!getMessages(matrixRoom)) {
morseSOSLED();
return;
}
if (mentionedOnMatrix) {
digitalWrite(RELAY_PIN, HIGH);
mentionedOnMatrix = false;
}
}
bool relayState = digitalRead(RELAY_PIN);
if (buttonState == LOW && previousButtonState == HIGH && relayState == HIGH && sendMessage(matrixRoom, matrixMessage)) { // button just pressed while light is up
delay(100);
Serial.println("Button pressed");
digitalWrite(RELAY_PIN, LOW);
}
digitalWrite(LED_PIN, LOW); // light up the LED, in case we encounter temporary failure in getMessages()
previousButtonState = buttonState;
}
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