presence-button/presence-button.ino

369 lines
13 KiB
C++

#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
#include <ESP8266mDNS.h> // https://tttapa.github.io/ESP8266/Chap08%20-%20mDNS.html
#include <WiFiClientSecure.h>
//for LED status
#include <Ticker.h>
Ticker ledTicker;
const byte RELAY_PIN = D2; // SHOULD BE 12 for Sonoff S20
const byte LED_PIN = LED_BUILTIN; // 13 for Sonoff S20, 2 for NodeMCU/ESP12 internal LED
const byte BUTTON_PIN = 0;
bool fuzIsOpen = false;
void blinkLED() {
//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
ledTicker.attach(0.5, blinkLED);
}
//define your default values here, if there are different values in config.json, they are overwritten.
String matrixUsername;
String matrixPassword;
String notifiedEndpoint = "https://presence-button-staging.glitch.me/status?fuzisopen="; // #entropy:matrix.fuz.re
//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
ESP8266WebServer httpServer(80); // webserver on port 80 https://github.com/esp8266/Arduino/blob/14262af0d19a9a3b992d5aa310a684d47b6fb876/libraries/ESP8266WebServer/examples/AdvancedWebServer/AdvancedWebServer.ino
void handleRoot() {
String html =
String("<!DOCTYPE HTML><html>") +
"<head><meta charset=utf-8><title>presence</title></head><body>" +
"<a href='/admin'>Admin</a><br>" +
"Rotating light: " + String(digitalRead(RELAY_PIN) == HIGH) + "<br>" +
"Fuz is open: " + String(fuzIsOpen) + "<br>" +
"</body></html>";
httpServer.send(200, "text/html", html);
}
void handleAdmin() {
if (!httpServer.authenticate(matrixUsername.c_str(), matrixPassword.c_str())) {
return httpServer.requestAuthentication();
}
for (int i = 0; i < httpServer.args(); i++) {
if (httpServer.argName(i) == "disablerotatinglight") {
digitalWrite(RELAY_PIN, LOW);
continue;
}
if (httpServer.argName(i) == "enablerotatinglight") {
digitalWrite(RELAY_PIN, HIGH);
continue;
}
if (httpServer.argName(i) == "setfuzisopen") {
fuzIsOpen = true;
continue;
}
if (httpServer.argName(i) == "resetesp") {
httpServer.sendHeader("Location", httpServer.uri(), true);
httpServer.send(302, "text/plain", "");
delay(500);
ESP.restart();
return;
}
}
if (httpServer.method() == HTTP_POST) {
for (int i = 0; i < httpServer.args(); i++) {
if (httpServer.argName(i) == "matrixUsername") {
matrixUsername = httpServer.arg(i);
continue;
}
if (httpServer.argName(i) == "matrixPassword") {
matrixPassword = httpServer.arg(i);
continue;
}
if (httpServer.argName(i) == "notifiedEndpoint") {
notifiedEndpoint = httpServer.arg(i);
continue;
}
}
Serial.println(F("saving config"));
const size_t capacity = JSON_OBJECT_SIZE(3) + 440; // https://arduinojson.org/v6/assistant/
DynamicJsonDocument jsonBuffer(capacity);
jsonBuffer["matrixUsername"] = matrixUsername;
jsonBuffer["matrixPassword"] = matrixPassword;
jsonBuffer["notifiedEndpoint"] = notifiedEndpoint;
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();
}
if (httpServer.args() > 0 || httpServer.method() == HTTP_POST) { // trim GET parameters and prevent resubmiting same form on refresh
httpServer.sendHeader("Location", httpServer.uri(), true);
return httpServer.send(302, "text/plain", "");
}
String html =
String("<!DOCTYPE HTML><html>") +
"<head><meta charset=utf-8><title>presence admin</title></head><body>" +
(digitalRead(RELAY_PIN) == HIGH ? "<a href='?disablerotatinglight'>Disable rotating light</a>" : "<a href='?enablerotatinglight'>Enable rotating light</a>") + "<br>" +
(fuzIsOpen ? "" : "<a href='?setfuzisopen'>Set Fuz as open</a>") + "<br>" +
"<a href='?resetesp'>Reboot ESP</a>" + "<br><br>" +
"<form method='post'>" +
"<div><label for='matrixUsername'>matrixUsername </label><input name='matrixUsername' id='matrixUsername' value='" + matrixUsername + "'></div>" +
"<div><label for='matrixPassword'>matrixPassword </label><input name='matrixPassword' id='matrixPassword' value='" + matrixPassword + "'></div>" +
"<div><label for='notifiedEndpoint'>notifiedEndpoint </label><input name='notifiedEndpoint' id='notifiedEndpoint' value='" + notifiedEndpoint + "'></div>" +
"<div><button>Submit</button></div></form>"
"</body></html>";
httpServer.send(200, "text/html", html);
}
void handleNotFound() {
httpServer.send(404, "text/plain", httpServer.uri() + " not found");
}
BearSSL::WiFiClientSecure secureClient;
HTTPClient http;
void notifyFuzIsOpen(bool fuzIsOpen) {
http.begin(secureClient, notifiedEndpoint + String(fuzIsOpen));
http.setAuthorization(matrixUsername.c_str(), matrixPassword.c_str());
int httpCode = http.GET();
Serial.println("notifyFuzIsOpen body: " + http.getString());
Serial.println("notifyFuzIsOpen return code: " + String(httpCode));
http.end();
if (httpCode != 200) { // something is wrong, bad network or misconfigured credentials
ledTicker.attach(0.1, blinkLED);
} else {
ledTicker.detach();
digitalWrite(LED_PIN, LOW); // ensure the LED is lit
}
}
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 ledTicker with 1 because we start in AP mode and try to connect
ledTicker.attach(1.1, blinkLED);
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);
const size_t capacity = JSON_OBJECT_SIZE(3) + 440; // https://arduinojson.org/v6/assistant/
DynamicJsonDocument jsonBuffer(capacity);
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["notifiedEndpoint"];
notifiedEndpoint = m2;
}
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 customNotifiedEndpoint("Notified endpoint", "Notified endpoint", notifiedEndpoint.c_str(), 200);
//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(&customNotifiedEndpoint);
//reset settings - for testing
//wifiManager.resetSettings();
//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.restart();
delay(5000);
}
//if you get here you have connected to the WiFi
Serial.println(F("connected...yeey :)"));
ledTicker.detach();
//keep LED on
digitalWrite(LED_PIN, LOW);
//read updated parameters
matrixUsername = customMatrixUsername.getValue();
matrixPassword = customMatrixPassword.getValue();
notifiedEndpoint = customNotifiedEndpoint.getValue();
//save the custom parameters to FS
if (shouldSaveConfig) {
Serial.println(F("saving config"));
const size_t capacity = JSON_OBJECT_SIZE(3) + 440; // https://arduinojson.org/v6/assistant/
DynamicJsonDocument jsonBuffer(capacity);
jsonBuffer["matrixUsername"] = matrixUsername;
jsonBuffer["matrixPassword"] = matrixPassword;
jsonBuffer["notifiedEndpoint"] = notifiedEndpoint;
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());
Serial.println(WiFi.SSID());
httpServer.on("/", handleRoot);
httpServer.on("/admin", handleAdmin);
httpServer.onNotFound(handleNotFound);
httpServer.begin();
Serial.println("HTTP server started");
if (!MDNS.begin("presence")) { // https://github.com/esp8266/Arduino/blob/14262af0d19a9a3b992d5aa310a684d47b6fb876/libraries/ESP8266mDNS/examples/mDNS_Web_Server/mDNS_Web_Server.ino
Serial.println("Error setting up MDNS responder!");
} else {
Serial.println("mDNS responder started");
}
MDNS.addService("http", "tcp", 80);
secureClient.setInsecure();
}
bool buttonState = HIGH;
bool previousButtonState = HIGH;
long previousMillis = 0;
const long notifyInterval = 5000;
unsigned long pressedTime = millis();
void loop() {
MDNS.update();
httpServer.handleClient();
buttonState = digitalRead(BUTTON_PIN);
if (buttonState == LOW && previousButtonState == HIGH) { // long press handling, reset settings https://forum.arduino.cc/index.php?topic=276789.msg1947963#msg1947963
Serial.println("Button pressed (longpress handling)");
pressedTime = millis();
}
if (buttonState == LOW && previousButtonState == LOW && (millis() - pressedTime) > 5000) {
Serial.println("Button STILL pressed (longpress handling)");
wifiManager.resetSettings();
SPIFFS.format();
delay(500);
ESP.restart();
}
unsigned long currentMillis = millis();
if (currentMillis - previousMillis > notifyInterval) {
previousMillis = currentMillis;
notifyFuzIsOpen(fuzIsOpen);
}
if (!fuzIsOpen) {
digitalWrite(RELAY_PIN, HIGH);
}
bool relayState = digitalRead(RELAY_PIN);
if (buttonState == LOW && previousButtonState == HIGH /* && relayState == HIGH*/) { // button just pressed while light is up
delay(100);
Serial.println("Button pressed");
digitalWrite(RELAY_PIN, LOW);
fuzIsOpen = true;
notifyFuzIsOpen(fuzIsOpen);
}
previousButtonState = buttonState;
}