Updating heartbeat sketches

mithru · mithru · commit 3aca8062393c · 2014-08-16T21:11:21.000+08:00
diff --git a/01.LEDs/Heartbeat/boot.py b/01.LEDs/Heartbeat/boot.py
@@ -0,0 +1,2 @@
+import pyb
+led = pyb.LED(4)
diff --git a/01.LEDs/Heartbeat/main.py b/01.LEDs/Heartbeat/main.py
@@ -0,0 +1,8 @@
+tick = 0 # counter variable
+
+while True:
+	if tick <= 3:
+		led.toggle()
+	#make sure the value of tick has a 0-9 range
+	tick = (tick + 1) % 10
+	pyb.delay(100)
diff --git a/01.LEDs/HeartbeatFade/boot.py b/01.LEDs/HeartbeatFade/boot.py
@@ -0,0 +1,2 @@
+import pyb
+led = pyb.LED(4)
diff --git a/01.LEDs/HeartbeatFade/main.py b/01.LEDs/HeartbeatFade/main.py
@@ -0,0 +1,12 @@
+tick = 0 # counter variable
+
+while True:
+    if tick < 40:
+        # self.tick % 20 gives a number 0 to 19
+        # subtracting 9 makes it -9 to 10
+        # abs maps it 9 to 0 to 10
+        # subtracting from 10 maps it 1 to 10 to 0
+        # multiplying by 25 scales it 25 to 250 to 0
+        led.intensity((10 - (abs((tick % 20) - 9))) * 25)
+    tick = (tick + 1) % 100
+    pyb.delay(10)
