1
我试图使用raw_input
函数输入一个字母,例如l
或r
,它会像0.4
或1.6
一定的PWM值。这里是我的代码:怎样的raw_input使用控制PWM
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.cleanup()
enable_pin = 18
coil_A_1_pin = 27
coil_A_2_pin = 17
coil_B_1_pin = 23
coil_B_2_pin = 24
coil_A_x1_pin = 22
coil_A_x2_pin = 5
coil_B_x1_pin = 6
coil_B_x2_pin = 13
s = 12
GPIO.setup(enable_pin, GPIO.OUT)
GPIO.setup(coil_A_1_pin, GPIO.OUT)
GPIO.setup(coil_A_2_pin, GPIO.OUT)
GPIO.setup(coil_B_1_pin, GPIO.OUT)
GPIO.setup(coil_B_2_pin, GPIO.OUT)
GPIO.setup(coil_A_x1_pin, GPIO.OUT)
GPIO.setup(coil_A_x2_pin, GPIO.OUT)
GPIO.setup(coil_B_x1_pin, GPIO.OUT)
GPIO.setup(coil_B_x2_pin, GPIO.OUT)
GPIO.setup(s, GPIO.OUT)
GPIO.output(enable_pin, 1)
def forward(delay, steps):
for i in range(0, steps):
setStep(1, 1, 0, 0)
time.sleep(delay)
setStep(0, 1, 1, 0)
time.sleep(delay)
setStep(0, 0, 1, 1)
time.sleep(delay)
setStep(1, 0, 0, 1)
time.sleep(delay)
def backwards(delay, steps):
for i in range(0, steps):
setStep(1, 0, 0, 1)
time.sleep(delay)
setStep(0, 0, 1, 1)
time.sleep(delay)
setStep(0, 1, 1, 0)
time.sleep(delay)
setStep(1, 1, 0, 0)
time.sleep(delay)
def setStep(w1, w2, w3, w4):
GPIO.output(coil_A_1_pin, w1)
GPIO.output(coil_A_x1_pin, w1)
GPIO.output(coil_A_2_pin, w2)
GPIO.output(coil_A_x2_pin, w2)
GPIO.output(coil_B_1_pin, w3)
GPIO.output(coil_B_x1_pin, w3)
GPIO.output(coil_B_2_pin, w4)
GPIO.output(coil_B_x2_pin, w4)
p = GPIO.PWM(s,7.5)
try:
while True:
l = 0.3
r = 1.7
n = 1.1
pos = raw_input("Left(l), right(r) or neutral(n)? ")
p.ChangeDutyCycle(float(pos))
delay = raw_input("Delay between steps (milliseconds)? ")
steps = raw_input("How many steps forward? ")
forward(int(delay)/1000.0, int(steps))
steps = raw_input("How many steps backwards? ")
backwards(int(delay)/1000.0, int(steps))
except KeyboardInterrupt:
GPIO.cleanup()
我也有另一个程序与pygame
做到这一点,但我无法弄清楚如何使用通过SSH对一个开发模式的Chromebook,所以我抛弃这一点。另外,不要介意所有def
和我正在运行的步进电机的其他事情。步进电机工作正常,因为我直接输入数字而不是变量,但我无法弄清楚如何使它与变量一起工作。如果有人向我展示如何在chromebook上通过ssh运行pygame,这会让它变得容易很多,这将是非常棒的!
好的,我会试试看,并回复你。 – malteasy