streaming-kamera/src/schrittmotor.py

from src.einstellungen import *
import RPi.GPIO as GPIO
import time
import threading
import math

GPIO.setmode(GPIO.BCM)
#GPIO.setwarnings(False)
 
class motor:

    pos = 0
    freq = freq
    freq_halten = freq_halten
    cyc_halten = cyc_halten
    schritte_max = 0

    def __init__(self, name, sp1, sp2, sp3, sp4, t1, t2, te, es, halten):
        self.name = name
        self.sp1 = sp1
        self.sp2 = sp2
        self.sp3 = sp3
        self.sp4 = sp4
        self.t1 = t1
        self.t2 = t2
        self.te = te
        self.endschalter = es
        self.halten = halten

        GPIO.setup(sp1, GPIO.OUT)
        GPIO.setup(sp2, GPIO.OUT)
        GPIO.setup(sp3, GPIO.OUT)
        GPIO.setup(sp4, GPIO.OUT)

        self.pwm1 = GPIO.PWM(sp1, freq)
        self.pwm1.start(0)
        
        self.pwm2 = GPIO.PWM(sp2, freq)
        self.pwm2.start(0)
        
        self.pwm3 = GPIO.PWM(sp3, freq)
        self.pwm3.start(0)
        
        if self.halten == 1:
            self.pwm4 = GPIO.PWM(sp4, freq)
            self.pwm4.start(cyc_halten)
        else:
            self.pwm4 = GPIO.PWM(sp4, freq)
            self.pwm4.start(0)

        print(str(self.pwm4))

    def vorwaerts(self, schritte):
        ges_schritte = schritte * 8
        print(str(ges_schritte))
        print(str(self.halten))

        if self.halten == 1:
            test = self.pwm4.ChangeFrequency(freq)
            print(str(self.pwm4))

        for i in range(int(schritte)):
            if self.pos >= self.schritte_max:
                break
            else:
                self.pos += 1

            temp_pos = i * 8
            einzelschritt(self.pwm1, 1, ges_schritte, temp_pos, self.t1, self.t2)
            einzelschritt(self.pwm4, 0, ges_schritte, temp_pos + 1, self.t1, self.t2)
            einzelschritt(self.pwm2, 1, ges_schritte, temp_pos + 2, self.t1, self.t2)
            einzelschritt(self.pwm1, 0, ges_schritte, temp_pos + 3, self.t1, self.t2)
            einzelschritt(self.pwm3, 1, ges_schritte, temp_pos + 4, self.t1, self.t2)
            einzelschritt(self.pwm2, 0, ges_schritte, temp_pos + 5, self.t1, self.t2)
            einzelschritt(self.pwm4, 1, ges_schritte, temp_pos + 6, self.t1, self.t2)
            einzelschritt(self.pwm3, 0, ges_schritte, temp_pos + 7, self.t1, self.t2)

        if self.halten == 1:
            self.pwm4.ChangeFrequency(freq_halten)
            self.pwm4.ChangeDutyCycle(cyc_halten)
            print(str(freq_halten))
        else:
            self.pwm4.ChangeDutyCycle(0)

def einzelschritt(spule, status, ges_schritte, schritt, t1, t2):
    w = (schritt * 100 / (ges_schritte - 1)) * 1.8
    s = round(math.sin(math.radians(w)), 2)
    t = t2 - (s * (t2 - t1))
    #print(str(t))

    if status == 1:
        for i in range(0, 91, 5):
            dc = round(math.sin(math.radians(i)) * 100, 0)
            spule.ChangeDutyCycle(dc)
            #print(str(dc))
            time.sleep(t)
    else:
        for i in range(0, 91, 5):
            dc = round(math.cos(math.radians(i)) * 100, 0)
            spule.ChangeDutyCycle(dc)
            time.sleep(t)