Add arduino (led) version

.gitignore

@@ -1,3 +1,2 @@
 klock4
-!klock4/
 html_out/

Makefile

@@ -1,18 +0,0 @@
-CC = clang
-
-LIBS = -lm
-
-x86:
-	$(CC) $(LIBS) klock4_x86.c -o klock4-x86
-
-uc:
-	$(CC) $(LIBS) klock4_uc.c -o klock4-uc
-
-wasm:
-	mkdir -p html_out
-	emcc klock4_wasm.c -s WASM=1 -o html_out/klock4.html --shell-file html_template/shell_minimal.html
-
-all: x86 uc wasm
-
-clean:
-	rm -rf klock4-x86 klock4-uc html_out

klock4.ino

@@ -1,20 +1,15 @@
-#include <stdint.h>
-#include <time.h>
-#include <math.h>
-
 #include <FastLED.h>
 #define DATA_PIN 13
 
-#define SLEEP_DELAY 100
-#include <DeepSleepScheduler.h>
+#include <stdint.h>
+#include <time.h>
+#include <math.h>
 
 #define ROWS 10
 #define COLS 11
 
 typedef struct {uint8_t start; uint16_t len;} word_t;
 
-#define _ALL      ((word_t) {.start=  0, .len=110})
-
 #define ES        ((word_t) {.start=  0, .len=2})
 #define IST       ((word_t) {.start=  3, .len=3})
 #define FUNF_PRE  ((word_t) {.start=  7, .len=4})
@@ -26,7 +21,6 @@ typedef struct {uint8_t start; uint16_t len;} word_t;
 #define HALB      ((word_t) {.start= 44, .len=4})
 #define ELF       ((word_t) {.start= 49, .len=3})
 #define FUNF_UHR  ((word_t) {.start= 51, .len=4})
-#define EIN       ((word_t) {.start= 55, .len=3})
 #define EINS      ((word_t) {.start= 55, .len=4})
 #define ZWEI      ((word_t) {.start= 62, .len=4})
 #define DREI      ((word_t) {.start= 66, .len=4})
@@ -37,14 +31,11 @@ typedef struct {uint8_t start; uint16_t len;} word_t;
 #define ZWOLF     ((word_t) {.start= 94, .len=5})
 #define ZEHN_UHR  ((word_t) {.start= 99, .len=4})
 #define NEUN      ((word_t) {.start=102, .len=4})
+//#define UHR       ((word_t) {.start=107, .len=3})
 #define UHR       ((word_t) {.start=107, .len=3})
 
-#define ST        ((word_t) {.start= 38, .len=2})
-#define EL        ((word_t) {.start= 49, .len=2})
-#define LE        ((word_t) {.start= 60, .len=2})
-
 word_t HOURS[] = {
-  ZWOLF, EIN, ZWEI, DREI, VIER, FUNF_UHR,
+  ZWOLF, EINS, ZWEI, DREI, VIER, FUNF_UHR,
   SECHS, SIEBEN, ACHT, NEUN, ZEHN_UHR, ELF
 };
 word_t PARTS[] = {
@@ -58,8 +49,6 @@ CRGB leds[ROWS*COLS];
 void set(word_t word) {
   CRGB color = CRGB(255,255,255);
   int dir = 1;
-  // because of the snaking LED layout, we need to reverse every second row
-  // i.e. flip the start on the other side and then count backwards
   if (word.start % 22 >= 11) {
     word.start = (word.start/11)*11 + 10 - (word.start % 11);
     dir = -1;
@@ -87,10 +76,6 @@ void settime(time_t ts) {
   unsigned int daylight_savings = 1;
   unsigned int hour   = (ts / (60*60) + timezone + daylight_savings) % 12;
 
-  Serial.print(hour);
-  Serial.print(F(":"));
-  Serial.println(minute);
-
   int before = 0;
 
   if (minute >= 25) {
@@ -117,64 +102,22 @@ void settime(time_t ts) {
   if (minute/5 == 5)
     set(HALB); // '5 before half' requires additional set
 
-  // minute 0 -> "EIN Uhr"
-  // minute N -> "N vor/nach EINS"
-  if(hour == 1 && minute != 0)
-    set(EINS);
-
 }
 
-#define UPDATE_INTERVAL_S 5
-
-time_t ts = 0L; // UTC
-
-void clockUpdate() {
-
-  settime(ts);
-
-  FastLED.show();
-
-  ts += UPDATE_INTERVAL_S;
-
-  /* drift determined experimentally:
-   * ~3.5ms/cycle "calculation time"
-   * 60ms/cycle other drift (wakeup time?)
-   */
-  #define DRIFT_MS 63
-  #define SCHEDULE_DELAY_MS ((1000 * UPDATE_INTERVAL_S) - DRIFT_MS)
-  scheduler.scheduleDelayed(clockUpdate, SCHEDULE_DELAY_MS);
-
-}
-
-void setup() {
-
-  Serial.begin(57600);
-
+void setup() { 
   FastLED.addLeds<WS2812,DATA_PIN,GRB>(leds, ROWS*COLS);
-  FastLED.setBrightness(16);
-
-  scheduler.schedule(clockUpdate);
-
+  FastLED.setBrightness(64);
 }
 
 void loop() {
 
-  /*
-  set(ST);
-  set(EL);
-  set(LE);
-  FastLED.show();
+  time_t ts = 1616970481; // UTC
 
-  Serial.println(F("Please enter unix time stamp:"));
-  while (Serial.available() == 0);
-  while (Serial.available() > 0) {
-    ts = Serial.parseInt();
-    if (Serial.read() == '\n')
-      break;
-  }
-  */
-  ts = 1618651100L;
-
-  scheduler.execute();
+  while (1) {
+    settime(ts);
+    FastLED.show();
+    delay(200);
+    ts += 5 * 60;
+  };
 
 }

klock4_wasm.c

@@ -80,9 +80,7 @@ void settime(time_t ts) {
 	float fminute = (float) minute + (float) second / 60;
 	minute = 5 * (unsigned int) roundf(fminute / 5);
 
-	unsigned int timezone = 1;
-	unsigned int daylight_savings = 1;
-	unsigned int hour = (ts / (60*60) + timezone + daylight_savings) % 12;
+	unsigned int hour   = (ts / (60*60) + 1) % 12;
 
 	//printf("%02d:%02d\n", hour, minute);