1 files changed, 260 insertions, 0 deletions

diff --git a/bs_button/src/main.cpp b/bs_button/src/main.cpp
new file mode 100644
index 0000000..290284c
--- /dev/null
+++ b/bs_button/src/main.cpp
@@ -0,0 +1,260 @@
+#include <Arduino.h>
+#include <ESP8266WiFi.h>
+
+#include <DNSServer.h>
+#include <ESP8266WebServer.h>
+#include <WiFiManager.h>
+
+#include <PubSubClient.h>
+#include <Bounce2.h>
+
+#include <ESP8266httpUpdate.h>
+
+#include <AudioGeneratorMP3.h>
+#include <AudioFileSourcePROGMEM.h>
+#include <AudioOutputI2SNoDAC.h>
+
+#include "ledcontrol.h"
+
+#define PIN_BUTTON  D2
+#define PIN_LED     D1
+
+#define LED_ON      HIGH
+#define LED_OFF     LOW
+
+#include "secrets.h"
+
+#define MQTT_BROKER       "maqiatto.com"
+#define MQTT_BROKER_PORT  1883
+//#define MQTT_USERNAME   ""
+//#define MQTT_PASSWORD   ""
+#define MQTT_BASE         MQTT_USERNAME "/bsbutton"
+
+// fw update
+// - increment number + build
+// - scp .pio/build/$ENV/firmware.bin manuel@mausz.at:public_html/coding/.firmware/bsbutton.bin
+// - reboot device or send "fwupdate" to mqtt_topic_cmd
+// - fw update state go to mqtt_topic_state
+#define FIRMWARE_VERSION  4
+//#define FIRMWARE_URL    ""
+
+// tracks
+// - ffmpeg -i input.mp3 -vn -ar 44100 -ac 1 -b:a 32k output.mp3
+// - xxd -i output.mp3 mytrack.h
+// - modify mytrack.h: const unsigned char xxx_mp3[] PROGMEM = ...
+// - add variable to arrays
+#include "alert.h"
+#include "manuel.h"
+#include "rickroll.h"
+#include "llama.h"
+#include "kit.h"
+#include "starwars.h"
+const unsigned char *tracks[] = {
+  alert_mp3,
+  manuel_mp3,
+  rickroll_mp3,
+  llama_mp3,
+  kit_mp3,
+  starwars_mp3
+};
+const unsigned int tracks_len[] = {
+  sizeof(alert_mp3),
+  sizeof(manuel_mp3),
+  sizeof(rickroll_mp3),
+  sizeof(llama_mp3),
+  sizeof(kit_mp3),
+  sizeof(starwars_mp3)
+};
+long track_count = sizeof(tracks) / sizeof(unsigned char*);
+
+#define _STR(s) #s
+#define STR(s) _STR(s)
+const String mqtt_clientId = "BSButton-" + String(ESP.getChipId())
+                               + "/v" + STR(FIRMWARE_VERSION);
+const char* mqtt_topic_ping  = MQTT_BASE "/ping";
+const char* mqtt_topic_cmd = MQTT_BASE "/command";
+const String mqtt_topic_state = String(MQTT_BASE) + "/" + String(ESP.getChipId());
+
+class LedControl;
+bool mqttLoop();
+void mqttCallback(char *topic, byte *payload, unsigned int length);
+void blinkLed(const unsigned long interval);
+void checkFirmwareUpdate();
+
+WiFiClient wifi_client;
+PubSubClient mqtt(wifi_client);
+Bounce button = Bounce();
+LedControl led(PIN_LED, LED_ON);
+
+AudioGeneratorMP3 *mp3;
+AudioFileSourcePROGMEM *file;
+AudioOutputI2SNoDAC *out;
+
+void setup()
+{
+  Serial.begin(115200);
+  randomSeed(analogRead(PIN_LED));
+
+  pinMode(PIN_BUTTON, INPUT_PULLUP);
+  button.attach(PIN_BUTTON);
+  button.interval(25);
+
+  led.on();
+
+  WiFiManager wifiManager;
+  wifiManager.setConfigPortalTimeout(600);
+  Serial.printf_P(PSTR("Setting up WiFi\n"));
+  if (!wifiManager.autoConnect("Bullshit")) {
+    Serial.printf_P(PSTR("Failed to connect and hit timeout\n"));
+    delay(5000);
+    ESP.restart();
+  }
+
+  yield();
+  checkFirmwareUpdate();
+  yield();
+
+  mqtt.setServer(MQTT_BROKER, MQTT_BROKER_PORT);
+  mqtt.setCallback(mqttCallback);
+
+  mp3  = new AudioGeneratorMP3();
+  file = new AudioFileSourcePROGMEM();
+  out  = new AudioOutputI2SNoDAC();
+  out->SetGain(3.0); //NOTE >=4.0 does not work?
+
+  pinMode(LED_BUILTIN, OUTPUT);
+  digitalWrite(LED_BUILTIN, HIGH);
+}
+
+void loop()
+{
+  if (mp3->isRunning()) {
+    led.blink(200);
+    if (!mp3->loop())
+    {
+      mp3->stop();
+      led.off();
+    }
+  }
+  else
+  {
+    // turn off the blinking led
+    //if (ledState == LED_ON)
+    //  blinkLed();
+
+    if (!mqttLoop())
+    {
+      delay(5000);
+      return;
+    }
+
+    // prohibit triggering the button multiple times
+    static unsigned long button_lock_millis = 1000;
+    static unsigned long button_pressed_millis = 0;
+    button.update();
+    if (button.rose() && millis() - button_pressed_millis >= button_lock_millis)
+    {
+      const long track = random(track_count);
+      Serial.printf_P(PSTR("Button pressed. It's track #%ld\n"), track);
+      String tmp = "play" + String(track);
+      mqtt.publish(mqtt_topic_cmd, tmp.c_str());
+
+      button_pressed_millis = millis();
+    }
+  }
+}
+
+bool mqttLoop()
+{
+  if (!mqtt.connected())
+  {
+    led.on();
+    Serial.printf_P(PSTR("Connecting to MQTT\n"));
+    if (!mqtt.connect(mqtt_clientId.c_str(), MQTT_USERNAME, MQTT_PASSWORD))
+      return false;
+
+    Serial.printf_P(PSTR("MQTT connected\n"));
+    led.off();
+
+    mqtt.publish(mqtt_topic_ping, mqtt_clientId.c_str());
+    mqtt.subscribe(mqtt_topic_ping);
+    mqtt.subscribe(mqtt_topic_cmd);
+  }
+
+  yield();
+  mqtt.loop();
+  return true;
+}
+
+void mqttCallback(char *topic, byte *payload, unsigned int length)
+{
+  char c_payload[length + 1];
+  memcpy(c_payload, payload, length);
+  c_payload[length] = '\0';
+
+  if (!strcmp(topic, mqtt_topic_ping))
+  {
+    if (!strcmp(c_payload, "ping"))
+      mqtt.publish(mqtt_topic_ping, mqtt_clientId.c_str());
+    return;
+  }
+  else if (!strcmp(topic, mqtt_topic_cmd))
+  {
+    if (!strncmp(c_payload, "play", 4))
+    {
+      long track = atoi(c_payload + 4);
+      if (track >= track_count)
+        return;
+
+      Serial.printf_P(PSTR("Playing track #%ld\n"), track);
+      file->open(tracks[track], tracks_len[track]);
+      mp3->begin(file, out);
+      return;
+    }
+    else if (!strcmp(c_payload, "fwupdate"))
+    {
+      checkFirmwareUpdate();
+      return;
+    }
+    else if (!strcmp(c_payload, "reset"))
+    {
+      Serial.printf_P(PSTR("Resetting\n"));
+      ESP.reset();
+      return;
+    }
+  }
+
+  Serial.printf_P(PSTR("Unhandled MQTT message: [%s] %s\n"), topic, c_payload);
+}
+
+void checkFirmwareUpdate()
+{
+  BearSSL::WiFiClientSecure update_client;
+  update_client.setInsecure();
+
+  mqtt.publish(mqtt_topic_state.c_str(), "fwupdate running");
+  ESPhttpUpdate.setLedPin(PIN_LED, LED_ON);
+  ESPhttpUpdate.rebootOnUpdate(true);
+  t_httpUpdate_return ret = ESPhttpUpdate.update(update_client, FIRMWARE_URL, STR(FIRMWARE_VERSION));
+  switch(ret)
+  {
+    case HTTP_UPDATE_FAILED:
+      {
+        Serial.printf_P(PSTR("HTTP_UPDATE_FAILED Error (%d): %s\n"),
+          ESPhttpUpdate.getLastError(), ESPhttpUpdate.getLastErrorString().c_str());
+        String tmp = String("fwupdate error: ") + ESPhttpUpdate.getLastErrorString();
+        mqtt.publish(mqtt_topic_state.c_str(), tmp.c_str());
+      }
+      break;
+
+    case HTTP_UPDATE_NO_UPDATES:
+      Serial.printf_P(PSTR("HTTP_UPDATE_NO_UPDATES\n"));
+      mqtt.publish(mqtt_topic_state.c_str(), "fwupdate noupdates");
+      break;
+
+    case HTTP_UPDATE_OK:
+      Serial.printf_P(PSTR("HTTP_UPDATE_OK\n"));
+      mqtt.publish(mqtt_topic_state.c_str(), "fwupdate ok");
+      break;
+  }
+}