First draft of neopixel

libs/neopixel/neotest.ts

@@ -0,0 +1,92 @@
+basic.showLeds(`
+    # . . . .
+    . . . . .
+    . . # . .
+    . . . . .
+    . . . . #
+    `)
+console.log("Start")
+
+// Create a NeoPixel driver - specify the number of LEDs:
+let strip = neopixel.create(24);
+
+// If your strip is not at P0, specify the pin.
+strip.setPin(DigitalPin.P0)
+
+// Brightness defaults to 255 (very bright); 0 is completely off.
+strip.setBrigthness(20)
+
+// Set pixels - pixel number, followed by red, green and blue values, between 0 and 255.
+strip.setPix(0, 255, 255, 255);
+strip.setPix(1, 0, 255, 255);
+strip.setPix(2, 255, 0, 255);
+strip.setPix(3, 255, 255, 0);
+
+console.log("Send!")
+
+// Send the image to the strip.
+strip.display();
+basic.pause(500);
+
+console.log("Sent!")
+
+// Green light travelling the strip:
+for (let l = 0; l < strip.length(); l++) {
+    strip.clear();
+    strip.setPix(l, 0, 255, 0);
+    strip.display();
+    basic.pause(100);
+}
+
+let special = false;
+let numcol = 0;
+input.onButtonPressed(Button.A, () => {
+    special = true;
+    let r = 0;
+    let g = 0;
+    let b = 0;
+    if (numcol == 0) {
+        r = 255;
+        g = 255;
+        b = 255;
+    } else if (numcol == 1) {
+        r = 255;
+    } else if (numcol == 2) {
+        b = 255;
+    } else if (numcol == 3) {
+        r = 255;
+        g = 255;
+    } else if (numcol == 4) {
+        r = 10;
+        g = 10;
+        b = 10;
+    }
+    numcol = (numcol + 1) % 5;
+    for (let k = 0; k < 7; k++) {
+        strip.setPix(k, r, g, b);
+    }
+    strip.display();
+});
+
+control.inBackground(() => {
+    for (let j = 0; j < 2000000; j++) {
+        if (special) {
+            basic.pause(100);
+            continue;
+        }
+        let r1 = (0 + j * 2) & 63;
+        let g1 = (20 + j * 1) & 63;
+        let b1 = (30 + j * 3) & 63;
+        for (let i = 0; i < strip.length(); i++) {
+            strip.setPix(i, (r1 - i) * 20, (g1 - i) * 20, (b1 - i) * 20);
+        }
+        strip.display()
+        basic.pause(60);
+    }
+});
+
+control.inBackground(() => {
+    while (true) {
+        basic.showString("XMAS!", 150);
+    }
+});