Added built-in rain effect and bug fixes. See change log. (#301)

* Minor updates

* Fixed bug that prevented the last LED from updaing on some effects.

* added rain effect and updated library.json file

examples/esp8266_webinterface/esp8266_webinterface.ino

@@ -76,11 +76,6 @@ extern const char main_js[];
 #define WIFI_TIMEOUT 30000              // checks WiFi every ...ms. Reset after this time, if WiFi cannot reconnect.
 #define HTTP_PORT 80
 
-#define DEFAULT_COLOR 0xFF5900
-#define DEFAULT_BRIGHTNESS 128
-#define DEFAULT_SPEED 1000
-#define DEFAULT_MODE FX_MODE_STATIC
-
 unsigned long auto_last_change = 0;
 unsigned long last_wifi_check_time = 0;
 String modes = "";
@@ -100,10 +95,10 @@ void setup(){
 
   Serial.println("WS2812FX setup");
   ws2812fx.init();
-  ws2812fx.setMode(DEFAULT_MODE);
-  ws2812fx.setColor(DEFAULT_COLOR);
-  ws2812fx.setSpeed(DEFAULT_SPEED);
-  ws2812fx.setBrightness(DEFAULT_BRIGHTNESS);
+  ws2812fx.setMode(FX_MODE_STATIC);
+  ws2812fx.setColor(0xFF5900);
+  ws2812fx.setSpeed(1000);
+  ws2812fx.setBrightness(128);
   ws2812fx.start();
 
   Serial.println("Wifi setup");
@@ -231,7 +226,7 @@ void srv_handle_set() {
   for (uint8_t i=0; i < server.args(); i++){
     if(server.argName(i) == "c") {
       uint32_t tmp = (uint32_t) strtol(server.arg(i).c_str(), NULL, 10);
-      if(tmp >= 0x000000 && tmp <= 0xFFFFFF) {
+      if(tmp <= 0xFFFFFF) {
         ws2812fx.setColor(tmp);
       }
     }

examples/ws2812fx_limit_current/ws2812fx_limit_current.ino

@@ -173,7 +173,7 @@ void recvChar(void) {
 #define MAX_CURRENT         500 // maximum allowed current draw for the entire strip (mA)
 #define QUIESCENT_CURRENT    56 // current draw for the entire strip with all LEDs off (mA)
 #define INCREMENTAL_CURRENT  40 // increase in current for each intensity step per RGB color (uA)
-#define MAX_INTENSITY_SUM   ((MAX_CURRENT - QUIESCENT_CURRENT) * 1000) / INCREMENTAL_CURRENT
+#define MAX_INTENSITY_SUM   ((MAX_CURRENT - QUIESCENT_CURRENT) * (uint32_t)1000) / INCREMENTAL_CURRENT
 void myCustomShow(void) {
   static uint32_t lastSum = 0;
   uint32_t intensitySum = ws2812fx.intensitySum(); // get intensity sum for all LEDs

examples/ws2812fx_matrix/ws2812fx_matrix.ino

@@ -8,7 +8,7 @@
  #define PSTR // Make Arduino Due happy
 #endif
 
-#define PIN D5
+#define PIN 4
 
 // MATRIX DECLARATION:
 // Parameter 1 = width of NeoPixel matrix

examples/ws2812fx_msgeq7/ws2812fx_msgeq7.ino

@@ -35,16 +35,16 @@
 #include <WS2812FX.h>
 
 #define LED_COUNT 140
-#define LED_PIN   D1
+#define LED_PIN   4
 
 // include and config the VUMeter custom effect
 #define NUM_BANDS 7
 #define USE_RANDOM_DATA false
 #include "custom/VUMeter.h"
 
 // MSGEQ7 pin assignments
-#define STROBE D5
-#define RESET  D6
+#define STROBE 5
+#define RESET  6
 #define OUT    A0
 #define MSGEQ7_DELAY 50
 

examples/ws2812fx_overlay/ws2812fx_overlay.ino

@@ -83,7 +83,7 @@ void myCustomShow(void) {
 
   // blend the pixel data from the virtual strips and save it
   // to the physical strip
-  for (int i=0; i < ws2812fx_p.getNumBytes(); i++) {
+  for (uint16_t i=0; i < ws2812fx_p.getNumBytes(); i++) {
     pixels_p[i] = (pixels_v1[i] / 2) + (pixels_v2[i] / 2);
   }
 

examples/ws2812fx_patterns_web/ws2812fx_patterns_web.ino

@@ -54,7 +54,7 @@ uint16_t numLeds = 30; // default number of LEDs on the strip
 
 #define MAX_NUM_PATTERNS 8
 //                       duration, brightness, numSegments, [ { first, last, speed, mode, options, colors[] } ]
-#define DEFAULT_PATTERN {30, 64, 1, { {0, numLeds-1, numLeds*20, FX_MODE_STATIC, NO_OPTIONS, {RED,  BLACK, BLACK}} }}
+#define DEFAULT_PATTERN {30, 64, 1, { {0, (uint16_t)(numLeds-1), (uint16_t)(numLeds*20), FX_MODE_STATIC, NO_OPTIONS, {RED,  BLACK, BLACK}} }}
 
 typedef struct Pattern { // 208 bytes/pattern
   int duration;
@@ -143,7 +143,7 @@ void loop() {
 
   // if it's time to change pattern, do it now
   unsigned long now = millis();
-  if (lastTime == 0 || (now - lastTime > patterns[currentPattern].duration * 1000)) {
+  if (lastTime == 0 || (now - lastTime > patterns[currentPattern].duration * 1000ul)) {
     ws2812fx.clear();
     ws2812fx.resetSegments();
 
@@ -176,7 +176,7 @@ void configServer() {
     String auxFunc = server.arg("auxFunc");
     if (auxFunc.length() > 0) {
       int auxFuncIndex = auxFunc.toInt();
-      if (auxFuncIndex >= 0 && auxFuncIndex < sizeof(customAuxFunc) / sizeof(customAuxFunc[0])) {
+      if (auxFuncIndex >= 0 && (size_t)auxFuncIndex < sizeof(customAuxFunc) / sizeof(customAuxFunc[0])) {
         customAuxFunc[auxFuncIndex]();
       }
     }
@@ -371,7 +371,7 @@ bool json2patterns(String &json) {
     JsonArray patternsJson = deviceJson["patterns"];
     if (patternsJson.size() > 0 ) {
       numPatterns = 0;
-      for (int i = 0; i < patternsJson.size(); i++) {
+      for (size_t i = 0; i < patternsJson.size(); i++) {
         JsonObject patt = patternsJson[i];
 //      bool isEnabled = patt["isEnabled"];
 //      if (! isEnabled) continue; // disabled patterns are not stored
@@ -383,7 +383,7 @@ bool json2patterns(String &json) {
         patterns[numPatterns].duration = patt["duration"];
 
         patterns[numPatterns].numSegments = segmentsJson.size();
-        for (int j = 0; j < segmentsJson.size(); j++) {
+        for (size_t j = 0; j < segmentsJson.size(); j++) {
           JsonObject seg = segmentsJson[j];
 //seg.printTo(Serial);Serial.println();
 
@@ -420,9 +420,9 @@ bool json2patterns(String &json) {
 
           JsonArray colors = seg["colors"]; // the web interface sends three color values
           // convert colors from strings ('#ffffff') to uint32_t
-          patterns[numPatterns].segments[j].colors[0] = strtoul(colors[0].as<char*>() + 1, 0, 16);
-          patterns[numPatterns].segments[j].colors[1] = strtoul(colors[1].as<char*>() + 1, 0, 16);
-          patterns[numPatterns].segments[j].colors[2] = strtoul(colors[2].as<char*>() + 1, 0, 16);
+          patterns[numPatterns].segments[j].colors[0] = strtoul(colors[0].as<const char*>() + 1, 0, 16);
+          patterns[numPatterns].segments[j].colors[1] = strtoul(colors[1].as<const char*>() + 1, 0, 16);
+          patterns[numPatterns].segments[j].colors[2] = strtoul(colors[2].as<const char*>() + 1, 0, 16);
         }
         numPatterns++;
         if (numPatterns >= MAX_NUM_PATTERNS)  break;

examples/ws2812fx_segments_web/ws2812fx_segments_web.ino

@@ -72,7 +72,7 @@
 WS2812FX ws2812fx = WS2812FX(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
 AsyncWebServer server(80);
 
-typedef struct Preset {
+struct Preset {
   int  pin = LED_PIN;
   int  numPixels = LED_COUNT;
   int  brightness = 64;
@@ -203,7 +203,7 @@ void initWebAPI() {
 
     JsonArray segments = jsonObj["segments"];
     preset.numSegments = segments.size();
-    for (int i = 0; i < segments.size(); i++) {
+    for (size_t i = 0; i < segments.size(); i++) {
       JsonObject seg = segments[i];
 
       preset.segments[i].start = seg["start"];

examples/ws2812fx_soundfx/ws2812fx_soundfx.ino

@@ -5,10 +5,10 @@
   
   FEATURES
     * example of running an LED animation with sound effects.
-    * The WAV audio files are stored in the ESP's SPIFFS 
+    * The WAV audio files are stored in the ESP8266's LittleFS 
     * filesystem and need to be uploaded to the ESP before
     * uploading the sketch, as described here:
-    * https://arduino-esp8266.readthedocs.io/en/stable/filesystem.html#file-system-object-spiffs
+    * https://arduino-esp8266.readthedocs.io/en/latest/filesystem.html#uploading-files-to-file-system
     * 
     * We're using the fantastic ESP8266Audio library available here:
     * https://github.com/earlephilhower/ESP8266Audio.
@@ -67,7 +67,7 @@
 */
 
 #include <WS2812FX.h>
-#include "AudioFileSourceSPIFFS.h"
+#include "AudioFileSourceLittleFS.h"
 #include "AudioGeneratorWAV.h"
 #include "AudioOutputI2S.h"
 
@@ -77,15 +77,15 @@
 WS2812FX ws2812fx = WS2812FX(LED_COUNT, LED_PIN, NEO_GRB + NEO_KHZ800);
 
 AudioGeneratorWAV *wav = NULL;
-AudioFileSourceSPIFFS *file = NULL;
+AudioFileSourceLittleFS *file = NULL;
 AudioOutputI2S *out = NULL;
 
-char* soundfx = "/pew.wav";
+const char* soundfx = "/pew.wav";
 
 void setup() {
   Serial.begin(115200);
 
-  SPIFFS.begin(); // init SPIFFS file system where the audio samples are stored
+  LittleFS.begin(); // init LittleFS file system where the audio samples are stored
 
   ws2812fx.init();
   ws2812fx.setBrightness(255);
@@ -115,7 +115,7 @@ void playSound() {
   if(out  != NULL) delete out;
   if(wav  != NULL) delete wav;
 
-  file = new AudioFileSourceSPIFFS(soundfx);
+  file = new AudioFileSourceLittleFS(soundfx);
   out = new AudioOutputI2S();
   wav = new AudioGeneratorWAV();