Daylight Saving Time support

.gitignore

@@ -1 +1,5 @@
-.vscode
+debug.cfg
+debug_custom.json
+esp32.svd
+.vscode/
+build/

README.md

@@ -49,6 +49,22 @@ A happy setup will cycle through each color once,
 and then display orange for a while.
 
 
+Clock
+-----
+
+At night, 
+and sometimes during the day,
+it displays something like a clock.
+You will need to tell it your time zone.
+It doesn't do daylight saving time, sorry.
+I suggest you set it to standard time and pretend it's in sync with the sun.
+
+* Each pixel in the top row is 1 hour (3600 seconds)
+* Each pixel in the middle row is 5 minutes (300 seconds)
+* Each pixel in the bottom row is 25 seconds
+* There are four pixels around the bottom that move every 5 seconds
+
+
 Philosophy
 ----------
 
@@ -68,4 +84,3 @@ but if you want to make NeoPixel art,
 think hard about what the end result should look like.
 It's not enough to make a cool light show;
 it has to make people wonder "what is that for?"
-

timezones.h

@@ -0,0 +1,17 @@
+#include <Timezone.h>
+
+TimeChangeRule usEDT = {"EDT", Second, Sun, Mar, 2, -240};
+TimeChangeRule usEST = {"EST", First, Sun, Nov, 2, -300};
+Timezone TZ_US_Eastern(usEDT, usEST);
+
+TimeChangeRule usCDT = {"CDT", Second, Sun, Mar, 2, -300};
+TimeChangeRule usCST = {"CST", First, Sun, Nov, 2, -360};
+Timezone TZ_US_Central(usCDT, usCST);
+
+TimeChangeRule usMDT = {"MDT", Second, Sun, Mar, 2, -360};
+TimeChangeRule usMST = {"MST", First, Sun, Nov, 2, -420};
+Timezone TZ_US_Mountain(usMDT, usMST);
+
+TimeChangeRule usPDT = {"EDT", Second, Sun, Mar, 2, -420};
+TimeChangeRule usPST = {"EST", First, Sun, Nov, 2, -480};
+Timezone TZ_US_Pacific(usPDT, usPST);

wallart.ino

@@ -3,21 +3,23 @@
 #include <WiFiClientSecure.h>
 #include <WiFiUdp.h>
 #include <NTPClient.h>
-#include "times.h"
+#include <Time.h>
+#include "durations.h"
+#include "timezones.h"
 #include "picker.h"
 #include "network.h"
 
 #define NEOPIXEL_PIN 32
 #define GRIDLEN 64
 #define WFM_PASSWORD "artsy fartsy"
-#define TIME_OFFSET   (-7 * HOUR / SECOND)
+#define TIMEZONE TZ_US_Mountain
 
 /* 
  * The hours when the day begins and ends.
- * During the day, everything is brighter.
+ * At night, all you get is a dim clock.
  */
-#define DAY_BEGIN 7
+#define DAY_BEGIN 6
-#define DAY_END 21
+#define DAY_END 20
 #define DAY_BRIGHTNESS 0x80
 #define NIGHT_BRIGHTNESS 0x10
 
@@ -35,7 +37,7 @@
 CRGB grid[GRIDLEN];
 
 WiFiUDP ntpUDP;
-NTPClient timeClient(ntpUDP, TIME_OFFSET);
+NTPClient timeClient(ntpUDP);
 
 void setup() {
   FastLED.addLeds<WS2812, NEOPIXEL_PIN, GRB>(grid, GRIDLEN);
@@ -43,7 +45,17 @@ void setup() {
   FastLED.setCorrection(0xc0ffff);
   network_setup(WFM_PASSWORD);
 }
- 
+
+bool updateTime() {
+  if (timeClient.update()) {
+    time_t now = timeClient.getEpochTime();
+    time_t local = TIMEZONE.toLocal(now);
+    setTime(local);
+    return true;
+  }
+  return false;
+}
+
 void fade(int cycles = 2) {
   int reps = (cycles*GRIDLEN) + random(GRIDLEN);
   int hue = random(256);
@@ -243,22 +255,35 @@ void spinner(int count=32) {
 }
 
 void displayTime(unsigned long duration = 20 * SECOND) {
-  if (!connected()) return;
+  if (timeStatus() != timeSet) return;
   unsigned long end = millis() + duration;
   FastLED.clear();
 
   while (millis() < end) {
-    timeClient.update();
+    updateTime();
-    int hh = timeClient.getHours();
+    int hh = hour();
-    int mm = timeClient.getMinutes();
+    int mmss = now() % 3600;
-    int ss = timeClient.getSeconds();
     uint8_t hue = HUE_YELLOW;
 
-    if (hh >= 12) {
+    // Top: Hours
+    if (isPM()) {
       hue = HUE_ORANGE;
       hh -= 12;
     }
 
+    // Middle: 5m (300s)
+    uint8_t mm = (mmss/300) % 12;
+
+    // Bottom: 25s
+    uint8_t ss = (mmss/25) % 12;
+
+    // Outer: 5s
+    uint8_t s = (mmss/5) % 5;
+    grid[64 -  7 - 1] = CHSV(HUE_PURPLE, 128, (s==1)?96:0);
+    grid[64 - 15 - 1] = CHSV(HUE_PURPLE, 128, (s==2)?96:0);
+    grid[64 -  8 - 1] = CHSV(HUE_PURPLE, 128, (s==3)?96:0);
+    grid[64 -  0 - 1] = CHSV(HUE_PURPLE, 128, (s==4)?96:0);
+
     for (int i = 0; i < 12; i++) {
       // Omit first and last position on a row
       int pos = i + 1;
@@ -267,8 +292,8 @@ void displayTime(unsigned long duration = 20 * SECOND) {
       }
 
       grid[pos + 0] = CHSV(hue, 255, (i<hh)?128:48);
-      grid[pos + 24] = CHSV(HUE_RED, 255, (i<mm/5)?128:48);
+      grid[pos + 24] = CHSV(HUE_RED, 255, (i<mm)?128:48);
-      grid[pos + 48] = CHSV(HUE_PINK, 128, (i<ss/5)?96:48);
+      grid[pos + 48] = CHSV(HUE_PINK, 128, (i<ss)?96:48);
     }
     FastLED.show();
 
@@ -276,33 +301,27 @@ void displayTime(unsigned long duration = 20 * SECOND) {
   }
 }
 
-void adjustBrightness() {
-  int hh = timeClient.getHours();
-  if ((hh >= DAY_BEGIN) && (hh < DAY_END)) {
-    FastLED.setBrightness(DAY_BRIGHTNESS);
-  } else {
-    FastLED.setBrightness(NIGHT_BRIGHTNESS);
-  }
-}
-
 void loop() {
 	Picker p;
   uint8_t getprob = 4;
   bool conn = connected();
   bool day = true;
 
-  timeClient.update();
+  if (updateTime()) {
-  if (timeClient.isTimeSet()) {
+    int hh = hour();
-    int hh = timeClient.getHours();
+    day = ((hh >= DAY_BEGIN) && (hh < DAY_END));
-    day = ((hh > DAY_BEGIN) && (hh < DAY_END));
   }
   FastLED.setBrightness(day?DAY_BRIGHTNESS:NIGHT_BRIGHTNESS);
 
+  // If we don't yet have net art, try a little harder to get it.
   if ((NetArtFrames == 0) || !conn) {
     getprob = 16;
   }
-  
+
-  if (p.Pick(getprob)) {
+  if (!day || p.Pick(4)) {
+    // At night, only ever show the clock
+    displayTime(2 * MINUTE);
+  } else if (p.Pick(getprob)) {
     netget();
   } else if (day && p.Pick(4)) {
     // These can be hella bright
@@ -324,7 +343,5 @@ void loop() {
     cm5(8);
   } else if (p.Pick(2)) { 
     cm5(16);
-	} else if (p.Pick(4)) {
+	}
-    displayTime(1 * MINUTE);
-  }
 }