neopixel pico pi

main.py

# Example showing how functions, that accept tuples of rgb values,
# simplify working with gradients

import time
import random
import math
from neopixel import Neopixel

from machine import Pin
push_button = Pin(13, Pin.IN)  # 13 number pin is input


numpix = 27
strip = Neopixel(numpix, 0, 0, "RGB")

class Pixel:
    def __init__(self,color,brightness):
        self.color = (255,0,0)
        self.brightnessvalue = 50
    
    def brightness(self, brightness=None):
        if brightness == None:
            return self.brightnessvalue
        else:
            if brightness < 1:
                self.brightnessvalue = 1
            elif brightness > 255:
                self.brightnessvalue = 255
            else:
                self.brightnessvalue = brightness
    
    def colorWithBrightness(self):
        r = round(self.color[0] * self.brightness()/255)
        g = round(self.color[1] * self.brightness()/255)
        b = round(self.color[2] * self.brightness()/255)
        return (r,g,b)

pixels = []
for i in range(numpix):
    pixel = Pixel((255,255,0),20)
    pixels.append(pixel)


# strip = Neopixel(numpix, 0, 0, "GRBW")

red = (255, 0, 0)
orange = (255, 50, 0)
yellow = (255, 100, 0)
green = (0, 255, 0)
blue = (0, 0, 255)
indigo = (100, 0, 90)
violet = (200, 0, 100)
colors_rgb = [red, orange, yellow, green, blue, indigo, violet]

# same colors as normaln rgb, just 0 added at the end
colors_rgbw = [color+tuple([0]) for color in colors_rgb]
colors_rgbw.append((0, 0, 0, 255))

# uncomment colors_rgbw if you have RGBW strip
colors = colors_rgb
# colors = colors_rgbw

state = random.randint(1, 5)
#print("state",state)
speed = 0.043
# rgb_light_still = (204,252,22)
BRIGHTNESS = 0
BRIGHTNESS_MAX = 100
BRIGHTNESS_SPEED = 0.5

def setPixels():
    i = 0
    for pixel in pixels:
        pixel.brightness(BRIGHTNESS)
        strip.set_pixel(i, pixel.colorWithBrightness())
        i += 1

def updatePixel(idx,col):
    pixels[idx].color = col

def rotatePixels(dir):
    if dir == 'L':
        globals()['pixels'] = pixels[-1:] + pixels[:-1]
    if dir == 'R':
        globals()['pixels'] = pixels[1:] + pixels[:1]

def createPixelGradient(pixel1, pixel2, left_rgb_w, right_rgb_w):
    if pixel2 - pixel1 == 0:
        return
    right_pixel = max(pixel1, pixel2)
    left_pixel = min(pixel1, pixel2)

    for i in range(right_pixel - left_pixel + 1):
        fraction = i / (right_pixel - left_pixel)
        red = round((right_rgb_w[0] - left_rgb_w[0]) * fraction + left_rgb_w[0])
        green = round((right_rgb_w[1] - left_rgb_w[1]) * fraction + left_rgb_w[1])
        blue = round((right_rgb_w[2] - left_rgb_w[2]) * fraction + left_rgb_w[2])
        # if it's (r, g, b, w)
        if len(left_rgb_w) == 4 and 'W' in self.mode:
            white = round((right_rgb_w[3] - left_rgb_w[3]) * fraction + left_rgb_w[3])
            updatePixel(left_pixel + i, (red, green, blue, white))
        else:
            updatePixel(left_pixel + i, (red, green, blue))
    
def rainbow():
    huestep = round((8*8*8*8*16)/numpix)
    for i in range(numpix):
        hue = huestep * i
        updatePixel(i,strip.colorHSV(hue,255,255))


# ABSOLUTELY SCUFFED SHIT
#
#
#

sinsteplength = 4
sinsteps = []
for i in range(sinsteplength):
    sinsteps.append(math.sin(random.uniform(-math.pi/2,math.pi/2)))

def updateSinSteps():
    # sinsteplength = globals()['sinsteplength']
    # sinsteps = globals()['sinsteps']
    for i in range(sinsteplength):
        newstep = sinsteps[i] + random.uniform(-0.03,0.03) #math.sin(random.uniform(-math.pi/2,math.pi/2))
        if newstep < -1:
            newstep = -1
        if newstep > 1:
            newstep = 1
        sinsteps[i] = newstep
    # globals()['sinsteps'] = sinsteps


def rainbowSpecial():
    # sinsteplength = globals()['sinsteplength']
    # sinsteps = globals()['sinsteps']
    # print(sinsteps)
    lastcolor = (0,0,0)
    lastp2 = 0
    for i in range(sinsteplength):
        hue = round((sinsteps[i] + 1) * 8*8*8*8*16)
        color = strip.colorHSV(hue,255,255)
        p1 = i*round(numpix/sinsteplength)
        p2 = p1 + round(numpix/sinsteplength) -1
        if p2 >= numpix:
            p2 = numpix -1
        createPixelGradient(p1,p2,color,lastcolor)
        lastcolor = color
    # print(p2)
    updateSinSteps()
    
    # print(sinsteps)
    # print(math.sin(math.pi))
    # steps = 8
    # huestep = round((8*8*8*8*16)/numpix)
    # step = 0
    # for i in range(numpix):
    #     step += 1
    #     if step > steps:
    #         step = 0
    #     hue = huestep * step
    #     updatePixel(i,strip.colorHSV(hue,255,255))


    
state = random.randint(1,7)
# state = 7
state_last = 0
RAMPSTEPS = round(BRIGHTNESS_MAX/BRIGHTNESS_SPEED)
BRIGHTNESS = 0
STATETIMER = 0
STATETIMER_MAX = RAMPSTEPS*2 + 500
RANDOMHUE = 0

while True:
    # button stuff
    logic_state = push_button.value()
    if logic_state == True:
        BRIGHTNESS = BRIGHTNESS_MAX
        STATETIMER = STATETIMER_MAX
    
    # state check
    if STATETIMER >= STATETIMER_MAX:
        while state == state_last:
            state = random.randint(1,5)
        STATETIMER = 0
        if BRIGHTNESS != BRIGHTNESS_MAX:
            BRIGHTNESS = 0
    
    if state != state_last:
        hue = random.randint(0,8*8*8*8*16)
        rgb_light_still = strip.colorHSV(hue,255,255)
        # print(state)
        if state == 1:
            col = rgb_light_still
            for i in range(numpix):
                updatePixel(i,col)

        if state == 2:
            rainbow()
            speed = 0.043

        if state == 3:
            for i in range(numpix):
                on = (i % 7)
                col = (0,0,0)
                if not on:
                    col = rgb_light_still
                updatePixel(i,col)
                speed = 0.08

        if state == 4:
            for i in range(numpix):
                on = (i % 3)
                col = (0,0,0)
                if not on:
                    col = rgb_light_still
                updatePixel(i,col)
                speed = 0.08

        if state == 5:
            for i in range(numpix):
                on = (i % 2)
                col = (0,0,0)
                if not on:
                    col = rgb_light_still
                updatePixel(i,col)
                speed = 0.08

        if state == 6:
            for i in range(numpix):
                col = (0,0,0)
                if i == 1:
                    col = rgb_light_still
                updatePixel(i,col)
                speed = 0.04

        if state == 7:
            RANDOMHUE = random.randint(0,8*8*8*8*16)

        if state == 8:
            rainbowSpecial()
                

    state_last = state
    STATETIMER += 1
    ramp_up = True
    if STATETIMER > STATETIMER_MAX - RAMPSTEPS:
        ramp_up = False
    
    if ramp_up == True and BRIGHTNESS < BRIGHTNESS_MAX:
        BRIGHTNESS += BRIGHTNESS_SPEED
    if ramp_up == False and BRIGHTNESS > 0:
        BRIGHTNESS -= BRIGHTNESS_SPEED
    # print(state,BRIGHTNESS, STATETIMER,RAMPSTEPS)
    if state == 1:
        rotatePixels('L')
    elif state == 2: # rainbow
        rotatePixels('L')
    elif state == 3:
        rotatePixels('L')
    elif state == 4:
        rotatePixels('R')
    elif state == 5:
        rotatePixels('L')
    elif state == 6:
        rotatePixels('L')
    elif state == 7:
        for i in range(numpix):
            updatePixel(i,strip.colorHSV(RANDOMHUE,255,255))
            speed = 0.04
        RANDOMHUE += 200
        if RANDOMHUE >= 8*8*8*8*16:
            RANDOMHUE = 0
        
    else:
        rotatePixels('L')

    setPixels()
    time.sleep(speed)
    strip.show()

neopixel.py

import array, time
from machine import Pin
import rp2

# PIO state machine for RGB. Pulls 24 bits (rgb -> 3 * 8bit) automatically
@rp2.asm_pio(sideset_init=rp2.PIO.OUT_LOW, out_shiftdir=rp2.PIO.SHIFT_LEFT, autopull=True, pull_thresh=24)
def ws2812():
    T1 = 2
    T2 = 5
    T3 = 3
    wrap_target()
    label("bitloop")
    out(x, 1)               .side(0)    [T3 - 1]
    jmp(not_x, "do_zero")   .side(1)    [T1 - 1]
    jmp("bitloop")          .side(1)    [T2 - 1]
    label("do_zero")
    nop().side(0)                       [T2 - 1]
    wrap()

# PIO state machine for RGBW. Pulls 32 bits (rgbw -> 4 * 8bit) automatically
@rp2.asm_pio(sideset_init=rp2.PIO.OUT_LOW, out_shiftdir=rp2.PIO.SHIFT_LEFT, autopull=True, pull_thresh=32)
def sk6812():
    T1 = 2
    T2 = 5
    T3 = 3
    wrap_target()
    label("bitloop")
    out(x, 1)               .side(0)    [T3 - 1]
    jmp(not_x, "do_zero")   .side(1)    [T1 - 1]
    jmp("bitloop")          .side(1)    [T2 - 1]
    label("do_zero")
    nop()                   .side(0)    [T2 - 1]
    wrap()


# Delay here is the reset time. You need a pause to reset the LED strip back to the initial LED
# however, if you have quite a bit of processing to do before the next time you update the strip
# you could put in delay=0 (or a lower delay)
#
# Class supports different order of individual colors (GRB, RGB, WRGB, GWRB ...). In order to achieve
# this, we need to flip the indexes: in 'RGBW', 'R' is on index 0, but we need to shift it left by 3 * 8bits,
# so in it's inverse, 'WBGR', it has exactly right index. Since micropython doesn't have [::-1] and recursive rev()
# isn't too efficient we simply do that by XORing (operator ^) each index with 3 (0b11) to make this flip.
# When dealing with just 'RGB' (3 letter string), this means same but reduced by 1 after XOR!.
# Example: in 'GRBW' we want final form of 0bGGRRBBWW, meaning G with index 0 needs to be shifted 3 * 8bit ->
# 'G' on index 0: 0b00 ^ 0b11 -> 0b11 (3), just as we wanted.
# Same hold for every other index (and - 1 at the end for 3 letter strings).

class Neopixel:
    def __init__(self, num_leds, state_machine, pin, mode="RGB", delay=0.0001):
        self.pixels = array.array("I", [0 for _ in range(num_leds)])
        self.mode = set(mode)   # set for better performance
        if 'W' in self.mode:
            # RGBW uses different PIO state machine configuration
            self.sm = rp2.StateMachine(state_machine, sk6812, freq=8000000, sideset_base=Pin(pin))
            # dictionary of values required to shift bit into position (check class desc.)
            self.shift = {'R': (mode.index('R') ^ 3) * 8, 'G': (mode.index('G') ^ 3) * 8,
                          'B': (mode.index('B') ^ 3) * 8, 'W': (mode.index('W') ^ 3) * 8}
        else:
            self.sm = rp2.StateMachine(state_machine, ws2812, freq=8000000, sideset_base=Pin(pin))
            self.shift = {'R': ((mode.index('R') ^ 3) - 1) * 8, 'G': ((mode.index('G') ^ 3) - 1) * 8,
                          'B': ((mode.index('B') ^ 3) - 1) * 8, 'W': 0}
        self.sm.active(1)
        self.num_leds = num_leds
        self.delay = delay
        self.brightnessvalue = 255

    # Set the overal value to adjust brightness when updating leds
    def brightness(self, brightness=None):
        if brightness == None:
            return self.brightnessvalue
        else:
            if brightness < 1:
                brightness = 1
        if brightness > 255:
            brightness = 255
        self.brightnessvalue = brightness

    # Create a gradient with two RGB colors between "pixel1" and "pixel2" (inclusive)
    # Function accepts two (r, g, b) / (r, g, b, w) tuples
    def set_pixel_line_gradient(self, pixel1, pixel2, left_rgb_w, right_rgb_w):
        if pixel2 - pixel1 == 0:
            return
        right_pixel = max(pixel1, pixel2)
        left_pixel = min(pixel1, pixel2)

        for i in range(right_pixel - left_pixel + 1):
            fraction = i / (right_pixel - left_pixel)
            red = round((right_rgb_w[0] - left_rgb_w[0]) * fraction + left_rgb_w[0])
            green = round((right_rgb_w[1] - left_rgb_w[1]) * fraction + left_rgb_w[1])
            blue = round((right_rgb_w[2] - left_rgb_w[2]) * fraction + left_rgb_w[2])
            # if it's (r, g, b, w)
            if len(left_rgb_w) == 4 and 'W' in self.mode:
                white = round((right_rgb_w[3] - left_rgb_w[3]) * fraction + left_rgb_w[3])
                self.set_pixel(left_pixel + i, (red, green, blue, white))
            else:
                self.set_pixel(left_pixel + i, (red, green, blue))

    # Set an array of pixels starting from "pixel1" to "pixel2" (inclusive) to the desired color.
    # Function accepts (r, g, b) / (r, g, b, w) tuple
    def set_pixel_line(self, pixel1, pixel2, rgb_w):
        for i in range(pixel1, pixel2 + 1):
            self.set_pixel(i, rgb_w)

    # Set red, green and blue value of pixel on position <pixel_num>
    # Function accepts (r, g, b) / (r, g, b, w) tuple
    def set_pixel(self, pixel_num, rgb_w):
        pos = self.shift

        red = round(rgb_w[0] * (self.brightness() / 255))
        green = round(rgb_w[1] * (self.brightness() / 255))
        blue = round(rgb_w[2] * (self.brightness() / 255))
        white = 0
        # if it's (r, g, b, w)
        if len(rgb_w) == 4 and 'W' in self.mode:
            white = round(rgb_w[3] * (self.brightness() / 255))

        self.pixels[pixel_num] = white << pos['W'] | blue << pos['B'] | red << pos['R'] | green << pos['G']

    # Converts HSV color to rgb tuple and returns it
    # Function accepts integer values for <hue>, <saturation> and <value>
    # The logic is almost the same as in Adafruit NeoPixel library:
    # https://github.com/adafruit/Adafruit_NeoPixel so all the credits for that
    # go directly to them (license: https://github.com/adafruit/Adafruit_NeoPixel/blob/master/COPYING)
    def colorHSV(self, hue, sat, val):
        if hue >= 65536:
            hue %= 65536

        hue = (hue * 1530 + 32768) // 65536
        if hue < 510:
            b = 0
            if hue < 255:
                r = 255
                g = hue
            else:
                r = 510 - hue
                g = 255
        elif hue < 1020:
            r = 0
            if hue < 765:
                g = 255
                b = hue - 510
            else:
                g = 1020 - hue
                b = 255
        elif hue < 1530:
            g = 0
            if hue < 1275:
                r = hue - 1020
                b = 255
            else:
                r = 255
                b = 1530 - hue
        else:
            r = 255
            g = 0
            b = 0

        v1 = 1 + val
        s1 = 1 + sat
        s2 = 255 - sat

        r = ((((r * s1) >> 8) + s2) * v1) >> 8
        g = ((((g * s1) >> 8) + s2) * v1) >> 8
        b = ((((b * s1) >> 8) + s2) * v1) >> 8

        return r, g, b


    # Rotate <num_of_pixels> pixels to the left
    def rotate_left(self, num_of_pixels):
        if num_of_pixels == None:
            num_of_pixels = 1
        self.pixels = self.pixels[num_of_pixels:] + self.pixels[:num_of_pixels]

    # Rotate <num_of_pixels> pixels to the right
    def rotate_right(self, num_of_pixels):
        if num_of_pixels == None:
            num_of_pixels = 1
        num_of_pixels = -1 * num_of_pixels
        self.pixels = self.pixels[num_of_pixels:] + self.pixels[:num_of_pixels]

    # Update pixels
    def show(self):
        # If mode is RGB, we cut 8 bits of, otherwise we keep all 32
        cut = 8
        if 'W' in self.mode:
            cut = 0
        for i in range(self.num_leds):
            self.sm.put(self.pixels[i], cut)
        time.sleep(self.delay)

    # Set all pixels to given rgb values
    # Function accepts (r, g, b) / (r, g, b, w)
    def fill(self, rgb_w):
        for i in range(self.num_leds):
            self.set_pixel(i, rgb_w)
        time.sleep(self.delay)

ws2812b.py

import array, time
from machine import Pin
import rp2

@rp2.asm_pio(sideset_init=rp2.PIO.OUT_LOW, out_shiftdir=rp2.PIO.SHIFT_LEFT, autopull=True, pull_thresh=24)
def ws2812():
    T1 = 2
    T2 = 5
    T3 = 3
    wrap_target()
    label("bitloop")
    out(x, 1)               .side(0)    [T3 - 1]
    jmp(not_x, "do_zero")   .side(1)    [T1 - 1]
    jmp("bitloop")          .side(1)    [T2 - 1]
    label("do_zero")
    nop()                   .side(0)    [T2 - 1]
    wrap()

#delay here is the reset time. You need a pause to reset the LED strip back to the initial LED
#however, if you have quite a bit of processing to do before the next time you update the strip
#you could put in delay=0 (or a lower delay)
class ws2812b:
    def __init__(self, num_leds, state_machine, pin, delay=0.001):
        self.pixels = array.array("I", [0 for _ in range(num_leds)])
        self.sm = rp2.StateMachine(state_machine, ws2812, freq=8000000, sideset_base=Pin(pin))
        self.sm.active(1)
        self.num_leds = num_leds
        self.delay = delay
        self.brightnessvalue = 255

    # Set the overal value to adjust brightness when updating leds
    def brightness(self, brightness = None):
        if brightness == None:
            return self.brightnessvalue
        else:
            if (brightness < 1):
                brightness = 1
        if (brightness > 255):
            brightness = 255
        self.brightnessvalue = brightness

      # Create a gradient with two RGB colors between "pixel1" and "pixel2" (inclusive)
    def set_pixel_line_gradient(self, pixel1, pixel2, left_red, left_green, left_blue, right_red, right_green, right_blue):
        if pixel2 - pixel1 == 0: return

        right_pixel = max(pixel1, pixel2)
        left_pixel = min(pixel1, pixel2)

        for i in range(right_pixel - left_pixel + 1):
            fraction = i / (right_pixel - left_pixel)
            red = round((right_red - left_red) * fraction + left_red)
            green = round((right_green - left_green) * fraction + left_green)
            blue = round((right_blue - left_blue) * fraction + left_blue)

            self.set_pixel(left_pixel + i, red, green, blue)

      # Set an array of pixels starting from "pixel1" to "pixel2" to the desired color.
    def set_pixel_line(self, pixel1, pixel2, red, green, blue):
        for i in range(pixel1, pixel2+1):
            self.set_pixel(i, red, green, blue)

    def set_pixel(self, pixel_num, red, green, blue):
        # Adjust color values with brightnesslevel
        blue = round(blue * (self.brightness() / 255))
        red = round(red * (self.brightness() / 255))
        green = round(green * (self.brightness() / 255))

        self.pixels[pixel_num] = blue | red << 8 | green << 16

    # rotate x pixels to the left
    def rotate_left(self, num_of_pixels):
        if num_of_pixels == None:
            num_of_pixels = 1
        self.pixels = self.pixels[num_of_pixels:] + self.pixels[:num_of_pixels]

    # rotate x pixels to the right
    def rotate_right(self, num_of_pixels):
        if num_of_pixels == None:
            num_of_pixels = 1
        num_of_pixels = -1 * num_of_pixels
        self.pixels = self.pixels[num_of_pixels:] + self.pixels[:num_of_pixels]

    def show(self):
        for i in range(self.num_leds):
            self.sm.put(self.pixels[i],8)
        time.sleep(self.delay)

    def fill(self, red, green, blue):
        for i in range(self.num_leds):
            self.set_pixel(i, red, green, blue)
        time.sleep(self.delay)