Added C-implementation for NeoPixel.

Changed a few colors/animation settings for demo purposes.

Signed-off-by: Dirk Jahnke <dirk@familie-jahnke.de>

fs/animations.cfg

@@ -1,16 +1,16 @@
 [
-	{"led": 0, "mode": "on", "ticks": 10},
+	{"led": 0, "mode": "on", "ticks": 2},
-	{"led": 0, "mode": "off", "ticks": 10},
+	{"led": 0, "mode": "off", "ticks": 2},
-	{"led": 1, "mode": "on", "ticks": 20},
+	{"led": 1, "mode": "on", "ticks": 4},
-	{"led": 1, "mode": "off", "ticks": 20},
+	{"led": 1, "mode": "off", "ticks": 4},
-	{"led": 2, "mode": "on", "ticks": 40},
+	{"led": 2, "mode": "on", "ticks": 8},
-	{"led": 2, "mode": "off", "ticks": 40},
+	{"led": 2, "mode": "off", "ticks": 8},
-	{"led": 3, "mode": "on", "ticks": 80},
+	{"led": 3, "mode": "on", "ticks": 16},
-	{"led": 3, "mode": "off", "ticks": 80},
+	{"led": 3, "mode": "off", "ticks": 16},
-	{"led": 4, "mode": "on", "ticks": 160},
+	{"led": 4, "mode": "on", "ticks": 32},
-	{"led": 4, "mode": "off", "ticks": 160},
+	{"led": 4, "mode": "off", "ticks": 32},
-	{"led": 5, "mode": "on", "ticks": 320},
+	{"led": 5, "mode": "on", "ticks": 64},
-	{"led": 5, "mode": "off", "ticks": 320},
+	{"led": 5, "mode": "off", "ticks": 64},
-	{"led": 6, "mode": "on", "ticks": 640},
+	{"led": 6, "mode": "on", "ticks": 128},
-	{"led": 6, "mode": "off", "ticks": 640}
+	{"led": 6, "mode": "off", "ticks": 128}
 ]

fs/colors.cfg

@@ -1,10 +1,12 @@
 [
 	{"name": "off", "red": 0, "green": 0, "blue": 0},
-	{"name": "candle", "red": 50, "green": 40, "blue": 10},
+	{"name": "candle", "red": 30, "green": 15, "blue": 4},
 	{"name": "red", "red": 50, "green": 5, "blue": 5},
 	{"name": "green", "red": 5, "green": 50, "blue": 5},
-	{"name": "blue", "red": 5, "green": 5, "blue": 50},
+	{"name": "blue", "red": 5, "green": 5, "blue": 80},
-	{"name": "warmWhite", "red": 80, "green": 80, "blue": 40},
+	{"name": "yellow", "red": 50, "green": 50, "blue": 5},
+	{"name": "violet", "red": 50, "green": 5, "blue": 80},
+	{"name": "warmWhite", "red": 90, "green": 90, "blue": 30},
 	{"name": "coldWhite", "red": 80, "green": 80, "blue": 100},
 	{"name": "brightWhite", "red": 255, "green": 255, "blue": 255}
-]
+]

fs/lamps.cfg

@@ -4,6 +4,6 @@
 	{"level": "EG", "room": "Bad", "id": "eg-bad", "onColor": "red"},
 	{"level": "EG", "room": "Kueche", "id": "eg-kueche", "onColor": "green"},
 	{"level": "EG", "room": "Flur", "id": "eg-flur", "onColor": "blue"},
-	{"level": "OG", "room": "Wohnzimmer", "id": "og-wozi", "onColor": "candle"},
+	{"level": "OG", "room": "Wohnzimmer", "id": "og-wozi", "onColor": "yellow"},
-	{"level": "OG", "room": "Buero", "id": "og-office", "onColor": "coldWhite"}
+	{"level": "OG", "room": "Buero", "id": "og-office", "onColor": "violet"}
 ]

src/NeoPixel.c

@@ -0,0 +1,81 @@
+#include "mgos_bitbang.h"
+#include "mgos_gpio.h"
+#include "mgos_system.h"
+
+enum NeoPixel_ColorOrder {
+  RGB = 0,
+  GRB = 1,
+  BGR = 2,
+};
+
+#define MAX_LEDS 100
+static uint8_t NeoPixel_pin = 0;
+static uint8_t NeoPixel_numPixels = 0;
+static uint8_t NeoPixel_leds[3 * MAX_LEDS];
+static NeoPixel_ColorOrder NeoPixel_colorOrder = RGB;
+
+// ## **`NeoPixel_create(pin, numPixels, order)`**
+// Create and return a NeoPixel strip object. Example:
+// ```javascript
+// let pin = 5, numPixels = 16, colorOrder = NeoPixel.GRB;
+// let strip = NeoPixel.create(pin, numPixels, colorOrder);
+// strip.setPixel(0 /* pixel */, 12, 34, 56);
+// strip.show();
+//
+// strip.clear();
+// strip.setPixel(1 /* pixel */, 12, 34, 56);
+// strip.show();
+// ```
+void NeoPixel_create(uint8_t, pin, uint8_t numPixels, enum NeoPixel_ColorOrder order) {
+  mgos_gpio_init();
+  NeoPixel_pin = pin;
+  NeoPixel_numPixels = numPixels;
+  NeoPixel_colorOrder = order;
+  // GPIO.set_mode(pin, GPIO.MODE_OUTPUT);
+  mgos_gpio_set_mode(pin, MGOS_GPIO_MODE_OUTPUT);
+  // GPIO.write(pin, 0);  // Keep in reset.
+  mgos_gpio_write(pin, false);
+  NeoPixel_clear();
+}
+
+// ## **`NeoPixel_clear()`**
+// Clear in-memory values of the pixels.
+void NeoPixel_clear() {
+  for (int i=0; i<NeoPixel_numPixels * 3; ++i) {
+    NeoPixel_leds[i] = 0;
+  }
+}
+
+// ## **`NeoPixel_set(i, r, g, b)`**
+// Set i-th's pixel's RGB value.
+// Note that this only affects in-memory value of the pixel.
+void NeoPixel_set(uint8_t pixel, uint8_t red, uint8_t green, uint8_t blue) {
+  uint8_t v0, v1, v2;
+  if (NeoPixel_colorOrder == RGB) {
+    v0 = red; v1 = green; v2 = blue;
+  } else if (NeoPixel_colorOrder == GRB) {
+    v0 = green; v1 = red; v2 = blue;
+  } else if (NeoPixel_colorOrder == BGR) {
+    v0 = blue; v1 = green; v2 = red;
+  } else return;
+  NeoPixel_leds[pixel] = v0;
+  NeoPixel_leds[pixel+1] = v1;
+  NeoPixel_leds[pixel+2] = v2;
+}
+
+// ## **`NeoPixel_show()`**
+// Output values of the pixels.
+void NeoPixel_show() {
+  // GPIO.write(this.pin, 0);
+  mgos_gpio_write(pin, false);
+  // Sys.usleep(60);
+  mgos_usleep(60);
+  // BitBang.write(this.pin, BitBang.DELAY_100NSEC, 3, 8, 8, 6, this.data, this.len);
+  mgos_bitbang_write_bits(NeoPixel_pin, DELAY_100NSEC, 3, 8, 8, 6, NeoPixel_leds, NeoPixel_numPixels);
+  // GPIO.write(this.pin, 0);
+  mgos_gpio_write(pin, false);
+  // Sys.usleep(60);
+  mgos_usleep(60);
+  // GPIO.write(this.pin, 1);
+  mgos_gpio_write(pin, true);
+}