355 lines
8.2 KiB
C++
355 lines
8.2 KiB
C++
#include <Wire.h>
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#include <Adafruit_GFX.h>
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#include <Adafruit_SSD1306.h>
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#include <ESP8266WiFi.h>
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#include <Ticker.h>
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#include "icons.h"
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#define SCREEN_WIDTH 128 // OLED display width, in pixels
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#define SCREEN_HEIGHT 32 // OLED display height, in pixels
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Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
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#define MPDHOST "music.yannik.intern.yannikenss.de"
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#define MPDPORT 6600
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#define BUTTON_NEXT 14
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#define BUTTON_PAUSE 12
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#define BUTTON_VOLUP 13
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#define BUTTON_VOLDN 0
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const char* ssid = "hiddennetworkforchromecast";
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const char* password = "raisingelephantsissoutterlyboring";
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WiFiClient espClient;
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struct song_info {
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String title;
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String artist;
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};
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enum btn_flag { BTN_NONE, BTN_VOLUP, BTN_VOLDN, BTN_PAUSE, BTN_NEXT };
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btn_flag flag = BTN_NONE;
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bool inhibit = false;
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Ticker inhibit_ticker;
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const int debounce_wait = 200;
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//ISRs
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void reset_inhibit() {
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inhibit = false;
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}
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void set_flag_pause() {
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if (!inhibit) {
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flag = BTN_PAUSE;
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inhibit = true;
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inhibit_ticker.once_ms(debounce_wait, reset_inhibit);
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}
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}
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void set_flag_next() {
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if (!inhibit) {
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flag = BTN_NEXT;
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inhibit = true;
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inhibit_ticker.once_ms(debounce_wait, reset_inhibit);
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}
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}
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void set_flag_volup() {
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if (!inhibit) {
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flag = BTN_VOLUP;
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inhibit = true;
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inhibit_ticker.once_ms(debounce_wait, reset_inhibit);
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}
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}
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void set_flag_voldn() {
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if (!inhibit) {
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flag = BTN_VOLDN;
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inhibit = true;
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inhibit_ticker.once_ms(debounce_wait, reset_inhibit);
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}
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}
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//end ISRs
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void setup() {
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Serial.begin(9600);
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// SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
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if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3C for 128x32
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Serial.println(F("SSD1306 allocation failed"));
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for(;;); // Don't proceed, loop forever
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}
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// Clear the buffer
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display.clearDisplay();
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display.display();
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setup_wifi();
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delay(1000);
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Serial.println("Start main program");
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pinMode(BUTTON_NEXT, INPUT_PULLUP);
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pinMode(BUTTON_PAUSE, INPUT_PULLUP);
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pinMode(BUTTON_VOLUP, INPUT_PULLUP);
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pinMode(BUTTON_VOLDN, INPUT_PULLUP);
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attachInterrupt(digitalPinToInterrupt(BUTTON_NEXT), set_flag_next, FALLING);
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attachInterrupt(digitalPinToInterrupt(BUTTON_PAUSE), set_flag_pause, FALLING);
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attachInterrupt(digitalPinToInterrupt(BUTTON_VOLUP), set_flag_volup, FALLING);
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attachInterrupt(digitalPinToInterrupt(BUTTON_VOLDN), set_flag_voldn, FALLING);
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display_song_info();
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}
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void loop() {
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Serial.println("loop");
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for (int i = 0; i<10; i++) {
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delay(100);
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switch (flag) {
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case BTN_NEXT:
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Serial.println("next flag");
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next_song();
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flag = BTN_NONE;
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break;
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case BTN_PAUSE:
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Serial.println("pause flag");
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toggle_pause();
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flag = BTN_NONE;
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break;
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case BTN_VOLUP:
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Serial.println("volup flag");
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display_volume();
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volume_up();
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delay(10);
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display_volume();
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delay(500);
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while (!digitalRead(BUTTON_VOLUP)) {
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volume_up();
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delay(10);
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display_volume();
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delay(250);
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}
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flag = BTN_NONE;
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break;
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case BTN_VOLDN:
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Serial.println("voldn flag");
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display_volume();
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delay(10);
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volume_down();
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display_volume();
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delay(500);
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while (!digitalRead(BUTTON_VOLDN)) {
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volume_down();
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delay(10);
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display_volume();
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delay(250);
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}
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flag = BTN_NONE;
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break;
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}
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}
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display_song_info();
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}
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void display_error(char* error) {
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Serial.println("Displaying error:");
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Serial.println(error);
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display.clearDisplay();
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display.setCursor(0, 0);
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display.println("Error:");
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display.println(error);
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display.display();
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}
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void send_command(String command) {
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WiFiClient client;
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if (client.connect(MPDHOST, MPDPORT)) {
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client.println(command);
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while (client.available()) {
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Serial.write(client.read());
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}
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client.stop();
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}
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else {
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Serial.print("send command \"");
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Serial.print(command);
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Serial.println("\" failed");
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display_error("mpd connect failed");
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client.stop();
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}
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}
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void next_song() {
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display.clearDisplay();
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display.drawBitmap(0, 0, fastforward_icon, 128 ,32, WHITE);
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display.display();
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send_command("next");
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delay(250);
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}
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void toggle_pause() {
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display.clearDisplay();
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display.drawBitmap(0, 0, playpause_icon, 128 ,32, WHITE);
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display.display();
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send_command("pause");
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delay(250);
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}
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void volume_up() {
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send_command("volume 1");
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}
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void volume_down() {
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send_command("volume -1");
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}
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int get_volume() {
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WiFiClient client;
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String vol_str;
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if (client.connect(MPDHOST, MPDPORT)) {
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Serial.println("connected");
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client.print("status\n");
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while (client.connected() || client.available())
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{
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if (client.available())
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{
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String line = client.readStringUntil('\n');
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if (line.startsWith("volume: ")) {
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vol_str = line.substring(8);
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}
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else if (line.equals("OK")) {
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client.stop();
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}
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}
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}
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client.stop();
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Serial.println("connection done");
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}
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else {
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display_error("mpd connect failed");
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client.stop();
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return -1;
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}
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return vol_str.toInt();
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}
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int get_song_info(song_info* song_info) {
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WiFiClient client;
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if (client.connect(MPDHOST, MPDPORT)) {
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Serial.println("connected");
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client.print("currentsong\n");
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while (client.connected() || client.available())
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{
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if (client.available())
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{
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String line = client.readStringUntil('\n');
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if (line.startsWith("Title: ")) {
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song_info->title = line.substring(7);
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}
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else if (line.startsWith("Artist: ")) {
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song_info->artist = line.substring(8);
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}
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else if (line.equals("OK")) {
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client.stop();
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}
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}
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}
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client.stop();
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Serial.println("connection done");
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}
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else {
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display_error("mpd connect failed");
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client.stop();
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return 1;
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}
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return 0;
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}
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void display_volume() {
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int volume = get_volume();
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display.clearDisplay();
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display.drawBitmap(0, 0, volume_icon, 32, 32, WHITE);
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display.setTextSize(2); // Draw 2X-scale text
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display.setTextColor(WHITE);
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display.setCursor(40, 8);
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display.setTextWrap(false);
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display.println(volume);
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display.display(); // Show initial text
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}
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void display_song_info() {
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WiFiClient client;
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song_info song_info;
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if (get_song_info(&song_info)) {
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Serial.println("Error in get_song_info");
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return;
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}
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display.clearDisplay();
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display.setTextSize(2); // Draw 2X-scale text
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display.setTextColor(WHITE);
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display.setCursor(0, 0);
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display.setTextWrap(false);
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display.println(song_info.title);
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display.println(song_info.artist);
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display.display(); // Show initial text
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}
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void setup_wifi() {
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display.clearDisplay();
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display.setTextColor(WHITE);
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display.setTextSize(1);
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display.setCursor(0, 0);
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display.setTextWrap(true);
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delay(10);
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// We start by connecting to a WiFi network
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display.print("Network: ");
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display.print(ssid);
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display.display();
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WiFi.begin(ssid, password);
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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display.print(".");
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display.display();
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}
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display.println("");
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display.println("WiFi connected");
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display.print("IP: ");
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display.println(WiFi.localIP());
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display.display();
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}
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