Create BreathLamp1.py

Author: shaoziyang

boards/bearpi/PWM/BreathLamp1.py

@@ -0,0 +1,16 @@
+'''
+
+    BEARPI Breathing Lamp demo1
+
+'''
+
+from misc import PWM
+from utime import sleep_ms
+
+pwm = PWM(PWM.PWM0, 1, 20)
+pwm.open()
+
+while 1:
+    for i in range(20):
+        pwm = PWM(PWM.PWM0, i+1, 20)
+        sleep_ms(50)