gamma correction and status string

src/alarmsound.h

@@ -2,7 +2,7 @@
  * under Creative Commons 0 License
  * https://freesound.org/people/Rudmer_Rotteveel/sounds/316920/ */
 
-unsigned char alarmsound[] = {
+const unsigned char alarmsound[] PROGMEM = {
   0xff, 0xfb, 0x90, 0xc4, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x49, 0x6e, 0x66,
   0x6f, 0x00, 0x00, 0x00, 0x0f, 0x00, 0x00, 0x00, 0x2e, 0x00, 0x00, 0x4c,

src/led.cpp

@@ -47,7 +47,7 @@ void Led::loop_off(void) {
     if (wakeupIndex > 240) color = CRGB::White;
     fill_solid(leds, NUM_LEDS, color);
 //    fadeToBlackBy( leds, NUM_LEDS, 255-wakeupIndex);
-    FastLED.setBrightness(wakeupIndex);
+    setBrightness(wakeupIndex);
     if (wakeupIndex < 100) {
       leds[3] = CRGB::Black;
       leds[NUM_LEDS-4] = CRGB::Black;
@@ -95,7 +95,8 @@ void Led::setBrightness(uint8_t brightness) {
   if (brightness > 254) { // don't set first byte to 255 on tm1829
     FastLED.setBrightness(254);
   } else {
-    FastLED.setBrightness(brightness);
+    uint8_t b = pow(((double)brightness/255.0), 4.2) * 255.0;
+    FastLED.setBrightness(b);
   }
 }
 

src/main.cpp

@@ -40,7 +40,7 @@
 
 extern "C" {
 int rom_phy_get_vdd33();
-//uint8_t temprature_sens_read();
+uint8_t temprature_sens_read();
 //uint32_t hall_sens_read();
 }
 
@@ -49,6 +49,7 @@ U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2(U8G2_R0, /* reset=*/ 16, /* clock=*/ 15
 
 char timeStr[20];
 char weatherStr[32];
+char statusStr[32];
 RTC_DATA_ATTR static int boot_count = 0;
 RTC_DATA_ATTR struct tm alarmTime;
 RTC_DATA_ATTR bool alarmArmed = false;
@@ -382,9 +383,10 @@ void loop()
       lastButtonPress = millis();
       led.wakeUpLight(0);
       Serial.println("WAKEUP TIME!!!!!");
-      mp3.setVolume(2);
+//      mp3.setVolume(10);
 //      mp3.start_Progmem();
 //      delay(1500);
+      mp3.setVolume(2);
       mp3.start("http://radioessen.cast.addradio.de/radioessen/simulcast/high/stream.mp3");
       led.changeAnimation(2, 0);
     }
@@ -396,8 +398,8 @@ void loop()
     Serial.printf("voltage: %d\n", voltage);
 
     strftime(timeStr, sizeof(timeStr), "%H:%M:%S", &timeinfo);
-    sprintf(weatherStr, "%.1f°C  %.1f%%  %dmV", bme280.readTemperature(), bme280.readHumidity(), voltage);
-//    sprintf(weatherStr, "%.1f°C  %.1f%%  %.0fhPa", bme280.readTemperature(), bme280.readHumidity(), bme280.readPressure());
+    sprintf(weatherStr, "%.1f°C  %.1f%%  %.0fhPa", bme280.readTemperature(), bme280.readHumidity(), bme280.readPressure());
+    sprintf(statusStr, "%.1f°C  %dmV  %u  %s", temperatureRead(), voltage, ESP.getFreeHeap()/1024, isAlarmActive()?"A":"_");
 
     Serial.print("Free Heap: ");
     Serial.println(ESP.getFreeHeap());

src/mp3.cpp

@@ -23,6 +23,7 @@
 char titleStr[64];
 
 // convert mp3 files with `xxd -i alarm.wav > alarmsound.h`
+// has to be: const unsigned char alarmsound[] PROGMEM = ...
 
 MP3::MP3() {
     strncpy_P(URL, "http://streaming.shoutcast.com/80sPlanet?lang=en-US", sizeof(URL));
@@ -107,7 +108,7 @@ void MP3::mp3_decoder_task(void *pvParameters) {
 
 
 //  strcpy(titleStr, "loading...");
-  if (fromProgmem) file = new AudioFileSourcePROGMEM(alarmsound, sizeof(alarmsound));
+  if (fromProgmem) file = new AudioFileSourcePROGMEM(alarmsound, alarmsound_len);
   else file = new AudioFileSourceICYStream(URL);
   file->RegisterMetadataCB(MDCallback, (void*)"ICY");
   buff = new AudioFileSourceBuffer(file, preallocateBuffer, preallocateBufferSize);

src/screen.cpp

@@ -256,7 +256,7 @@ void MainScreen::draw() {
     u8g2.setFont(u8g2_font_profont12_mf); // choose a suitable font
     u8g2.drawUTF8(0, 30, weatherStr);
 
-    if (isAlarmActive()) u8g2.drawUTF8(110,42, "A");
+    u8g2.drawUTF8(0,42, statusStr);
 
     u8g2.setFont(u8g2_font_prospero_bold_nbp_tf); // choose a suitable font
 

src/screen.h

@@ -27,6 +27,7 @@ enum menuType { eNone=0, eWelcomeScreen, eMainScreen, eMainMenu, eStationMenu, e
 extern U8G2_SSD1306_128X64_NONAME_F_HW_I2C u8g2;
 extern char timeStr[];
 extern char weatherStr[];
+extern char statusStr[];
 extern BME280 bme280;
 extern MP3 mp3;
 extern menuType menuChange;