From 99e5badeb1e2e6aeffd3b3d56902d4257e168326 Mon Sep 17 00:00:00 2001 From: Paul Sokolovsky Date: Sun, 13 Nov 2016 17:00:24 +0300 Subject: [PATCH] examples/hwapi: Add soft_pwm example converted to uasyncio. --- examples/hwapi/soft_pwm_uasyncio.py | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 examples/hwapi/soft_pwm_uasyncio.py diff --git a/examples/hwapi/soft_pwm_uasyncio.py b/examples/hwapi/soft_pwm_uasyncio.py new file mode 100644 index 0000000000..8d7ad8c9e0 --- /dev/null +++ b/examples/hwapi/soft_pwm_uasyncio.py @@ -0,0 +1,28 @@ +# See original soft_pwm.py for detailed comments. +import uasyncio +from hwconfig import LED + + +async def pwm_cycle(led, duty, cycles): + duty_off = 20 - duty + for i in range(cycles): + if duty: + led.value(1) + await uasyncio.sleep_ms(duty) + if duty_off: + led.value(0) + await uasyncio.sleep_ms(duty_off) + + +async def fade_in_out(LED): + while True: + # Fade in + for i in range(1, 21): + await pwm_cycle(LED, i, 2) + # Fade out + for i in range(20, 0, -1): + await pwm_cycle(LED, i, 2) + + +loop = uasyncio.get_event_loop() +loop.run_until_complete(fade_in_out(LED))