diff options
| author | Damien George <damien@micropython.org> | 2021-01-21 00:34:08 +1100 |
|---|---|---|
| committer | Damien George <damien@micropython.org> | 2021-01-30 00:42:29 +1100 |
| commit | 469345e7285128739e2934e7934e107ffda79fc1 (patch) | |
| tree | a410ce2d427770a01d5b6f4d1b3ff2fb342cd94b /examples/rp2/pwm_fade.py | |
| parent | ef3ee7aa1005cd1f15c2144d4b46feb792ab3185 (diff) | |
rp2: Add new port to Raspberry Pi RP2 microcontroller.
This commit adds a new port "rp2" which targets the new Raspberry Pi RP2040
microcontroller.
The build system uses pure cmake (with a small Makefile wrapper for
convenience). The USB driver is TinyUSB, and there is a machine module
with most of the standard classes implemented. Some examples are provided
in the examples/rp2/ directory.
Work done in collaboration with Graham Sanderson.
Signed-off-by: Damien George <damien@micropython.org>
Diffstat (limited to 'examples/rp2/pwm_fade.py')
| -rw-r--r-- | examples/rp2/pwm_fade.py | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/examples/rp2/pwm_fade.py b/examples/rp2/pwm_fade.py new file mode 100644 index 000000000..7264edaa2 --- /dev/null +++ b/examples/rp2/pwm_fade.py @@ -0,0 +1,25 @@ +# Example using PWM to fade an LED. + +import time +from machine import Pin, PWM + + +# Construct PWM object, with LED on Pin(25). +pwm = PWM(Pin(25)) + +# Set the PWM frequency. +pwm.freq(1000) + +# Fade the LED in and out a few times. +duty = 0 +direction = 1 +for _ in range(8 * 256): + duty += direction + if duty > 255: + duty = 255 + direction = -1 + elif duty < 0: + duty = 0 + direction = 1 + pwm.duty_u16(duty * duty) + time.sleep(0.001) |