Create BreathLamp2.py

Author: shaoziyang

boards/bearpi/PWM/BreathLamp2.py

@@ -0,0 +1,18 @@
+'''
+
+    BEARPI Breathing Lamp demo2
+
+'''
+
+from misc import PWM
+from utime import sleep_ms
+
+N = 32
+
+pwm = PWM(PWM.PWM0, 1, N)
+pwm.open()
+
+while 1:
+    for i in range(N*2-1):
+        pwm = PWM(PWM.PWM0, abs(i-N+1)+1, N)
+        sleep_ms(50)