mirror of
https://github.com/openmv/openmv.git
synced 2025-11-04 14:49:50 +08:00
Portenta: Update PWM example.
This commit is contained in:
parent
a524dc41f6
commit
39c20bb351
@ -1,15 +1,38 @@
|
|||||||
# PWM Control Example
|
# PWM Control Example
|
||||||
#
|
#
|
||||||
# This example shows how to do PWM with your OpenMV Cam.
|
# This example shows how to do PWM with your OpenMV Cam.
|
||||||
|
#
|
||||||
|
#
|
||||||
|
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||||
|
# !!! NOTE !!!
|
||||||
|
# THIS IS THE ONLY FREE PIN WHEN USING THE VISION SHIELD.
|
||||||
|
# DO NOT USE ANY OTHER PIN WHILE USING THE VISION SHIELD.
|
||||||
|
# PWM7/PH15
|
||||||
|
# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
|
||||||
|
|
||||||
import time
|
import time
|
||||||
from pyb import Pin, Timer
|
from pyb import Pin, Timer
|
||||||
|
|
||||||
tim = Timer(4, freq=1000) # Frequency in Hz
|
class PWM():
|
||||||
# Generate a 1KHz square wave on TIM4 with 50%, 75% and 50% duty cycles on channels 1, 2 and 3 respectively.
|
def __init__(self, pin, tim, ch):
|
||||||
ch1 = tim.channel(1, Timer.PWM, pin=Pin("P7"), pulse_width_percent=50)
|
self.pin = pin
|
||||||
ch2 = tim.channel(2, Timer.PWM, pin=Pin("P8"), pulse_width_percent=75)
|
self.tim = tim
|
||||||
ch3 = tim.channel(3, Timer.PWM, pin=Pin("P9"), pulse_width_percent=50)
|
self.ch = ch;
|
||||||
|
|
||||||
|
pwms = {
|
||||||
|
# 'PWM1' : PWM('PA8', 1, 1), # TIM1 is Reserved.
|
||||||
|
'PWM2' : PWM('PC6', 3, 1),
|
||||||
|
'PWM3' : PWM('PC7', 3, 2),
|
||||||
|
# 'PWM4' : PWM('PG7', 0, 0), # HRTIM not supported.
|
||||||
|
'PWM5' : PWM('PJ11', 8, 2),
|
||||||
|
'PWM6' : PWM('PK1', 8, 3),
|
||||||
|
'PWM7' : PWM('PH15', 8, 3),
|
||||||
|
}
|
||||||
|
|
||||||
|
# Generate a 1KHz square wave with 50% cycle on the following PWM.
|
||||||
|
for k, pwm in pwms.items():
|
||||||
|
tim = Timer(pwm.tim, freq=1000) # Frequency in Hz
|
||||||
|
ch = tim.channel(pwm.ch, Timer.PWM, pin=Pin(pwm.pin), pulse_width_percent=50)
|
||||||
|
|
||||||
while (True):
|
while (True):
|
||||||
time.sleep_ms(1000)
|
time.sleep_ms(1000)
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user