Python • Re: Simple stepper motor driver with acceleration setting for Rpi5

Sorry here with ACCEL

Code:

import gpiodimport timeimport math# Define your GPIO pinsstep_pin = 24dir_pin = 23# Use gpiochip4chip_name = 'gpiochip4'try:    # Create a chip object to represent the GPIO chip    chip = gpiod.Chip(chip_name)        # Get lines for step and dir pins    step_line = chip.get_line(step_pin)    dir_line = chip.get_line(dir_pin)    # Configure the lines as output    step_line.request(consumer='StepperDriver', type=gpiod.LINE_REQ_DIR_OUT)    dir_line.request(consumer='StepperDriver', type=gpiod.LINE_REQ_DIR_OUT)    # Variables    stepdir = 1  # 1 for forward, 0 for backward    min_steppin = 0.00001  # Minimum delay between steps in seconds (max speed)    max_steppin = 0.001   # Maximum delay between steps in seconds (min speed)    steps = 2*3200          # Number of steps to perform    acceleration_steps = 800  # Number of steps to accelerate    # Set direction    dir_line.set_value(stepdir)    # Perform steps with acceleration    for i in range(steps):        # Calculate the current step delay with acceleration        if i < acceleration_steps:            steppin = max_steppin - (i * (max_steppin - min_steppin) / acceleration_steps)        elif i > (steps - acceleration_steps):            steppin = max_steppin - ((steps - i) * (max_steppin - min_steppin) / acceleration_steps)        else:            steppin = min_steppin        step_line.set_value(1)        time.sleep(steppin)        step_line.set_value(0)        time.sleep(steppin)    # Release GPIO lines    step_line.release()    dir_line.release()    chip.close()except gpiod.LineRequestError as e:    print(f"LineRequestError occurred: {e}")except Exception as e:    print(f"An error occurred: {e}")

Statistics: Posted by spatil — Fri Aug 16, 2024 10:52 am