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Update scope-xy-adafruitlogo.py

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CPX_DAC_Guide/scope-xy-adafruitlogo.py
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@ -1,198 +1,223 @@
### scope-xy-adafruitlogo v1.0
### Adafruit logo
"""Output a logo to an oscilloscope in X-Y mode on an Adafruit M4
board like Feather M4 or PyGamer (best to disconnect headphones).
"""Adafruit logo created from bitmap,
vectorised and flattened to straight lines by Inkscape
then points extracte from SVG data.
(Other route is to ask Adafruit for vector version!)
"""
### copy this file to PyGamer (or other M4 board) as code.py
### pylint 2.3.1 has some strange opinions on data structure indentation here
### and this conflicts with version 1.9.2
### pylint: disable=invalid-name,bad-continuation
offset_x = -10
offset_y = 9
### MIT License
data = [
# Removing the box outline
# Group 1
# (2.9962184, 251.49811),
# (2.9962184, 1.4981075),
# (252.99622, 1.4981075),
# (502.99622, 1.4981075),
# (502.99622, 251.49811),
# (502.99622, 501.49811),
# (252.99622, 501.49811),
# (2.9962184, 501.49811),
# (2.9962184, 251.49811),
### Copyright (c) 2019 Kevin J. Walters
### Permission is hereby granted, free of charge, to any person obtaining a copy
### of this software and associated documentation files (the "Software"), to deal
### in the Software without restriction, including without limitation the rights
### to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
### copies of the Software, and to permit persons to whom the Software is
### furnished to do so, subject to the following conditions:
### The above copyright notice and this permission notice shall be included in all
### copies or substantial portions of the Software.
### THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
### IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
### FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
### AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
### LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
### OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
### SOFTWARE.
import time
import math
import array
import board
import audioio
import analogio
### Vector data for logo
import adafruit_logo_vector
VECTOR_POINT_SPACING = 3
def addpoints(points, min_dist):
"""Add extra points to any lines if length is greater than min_dist"""
newpoints = []
original_len = len(points)
for pidx in range(original_len):
px1, py1 = points[pidx]
px2, py2 = points[(pidx + 1) % original_len]
### Always keep the original point
newpoints.append((px1, py1))
diff_x = px2 - px1
diff_y = py2 - py1
dist = math.sqrt(diff_x ** 2 + diff_y ** 2)
if dist > min_dist:
### Calculate extra intermediate points plus one
extrasp1 = int(dist // min_dist) + 1
for extra_idx in range(1, extrasp1):
ratio = extra_idx / extrasp1
newpoints.append((px1 + diff_x * ratio,
py1 + diff_y * ratio))
### Two points define a straight line
### so no need to connect final point back to first
if original_len == 2:
break
return newpoints
### pylint: disable=invalid-name
### If logo is off centre then correct it here
if adafruit_logo_vector.offset_x != 0 or adafruit_logo_vector.offset_y != 0:
data = []
for part in adafruit_logo_vector.data:
newpart = []
for point in part:
newpart.append((point[0] - adafruit_logo_vector.offset_x,
point[1] - adafruit_logo_vector.offset_y))
data.append(newpart)
else:
data = adafruit_logo_vector.data
### Add intermediate points to make line segments for each part
### look like continuous lines on x-y oscilloscope output
display_data = []
for part in data:
display_data.extend(addpoints(part, VECTOR_POINT_SPACING))
### PyPortal DACs seem to stop around 53000 and there's 2 100 ohm resistors
### on output so maybe large values aren't good idea?
### 32768 and 32000 exhibit this bug but 25000 so far appears to be a
### workaround, albeit a mysterious one
### https://github.com/adafruit/circuitpython/issues/1992
### Using "h" for audioio.RawSample() DAC range will be 20268 to 45268
dac_x_min = 0
dac_y_min = 0
dac_x_max = 25000
dac_y_max = 25000
dac_x_mid = dac_x_max // 2
dac_y_mid = dac_y_max // 2
### Convert the points into format suitable for audio library
### and scale to the DAC range used by the library
### Intentionally using "h" data representation here as this happens to
### cause the CircuitPython audio libraries to make a copy of
### rawdata which is useful to allow animating code to modify rawdata
### without affecting current DAC output
rawdata = array.array("h", (2 * len(display_data)) * [0])
range_x = 512.0
range_y = 512.0
halfrange_x = range_x / 2
halfrange_y = range_y / 2
mid_x = 256.0
mid_y = 256.0
mult_x = dac_x_max / range_x
mult_y = dac_y_max / range_y
### https://github.com/adafruit/circuitpython/issues/1992
print("length of rawdata", len(rawdata))
use_wav = True
poor_wav_bug_workaround = False
leave_wav_looping = True
### A0 will be x, A1 will be y
if use_wav:
print("Using audioio.RawSample for DACs")
dacs = audioio.AudioOut(board.A0, right_channel=board.A1)
else:
print("Using analogio.AnalogOut for DACs")
a0 = analogio.AnalogOut(board.A0)
a1 = analogio.AnalogOut(board.A1)
### 10Hz is about ok for AudioOut, optimistic for AnalogOut
frame_t = 1/10
prev_t = time.monotonic()
angle = 0 ### in radians
frame = 1
while True:
##print("Transforming data for frame:", frame, "at", prev_t)
### Rotate the points of the vector graphic around its centre
idx = 0
sine = math.sin(angle)
cosine = math.cos(angle)
for px, py in display_data:
pcx = px - mid_x
pcy = py - mid_y
dac_a0_x = round((-sine * pcx + cosine * pcy + halfrange_x) * mult_x)
### Keep x position within legal values (if needed)
##dac_a0_x = min(dac_a0_x, dac_x_max)
##dac_a0_x = max(dac_a0_x, 0)
dac_a1_y = round((sine * pcy + cosine * pcx + halfrange_y) * mult_y)
### Keep y position within legal values (if needed)
##dac_a1_y = min(dac_a1_y, dac_y_max)
##dac_a1_y = max(dac_a1_y, 0)
rawdata[idx] = dac_a0_x - dac_x_mid ### adjust for "h" array
rawdata[idx + 1] = dac_a1_y - dac_y_mid ### adjust for "h" array
idx += 2
if use_wav:
### 200k (maybe 166.667k) seems to be practical limit
### 1M permissible but seems same as around 200k
output_wave = audioio.RawSample(rawdata,
channel_count=2,
sample_rate=200 * 1000)
### The image may "warp" sometimes with loop=True due to a strange bug
### https://github.com/adafruit/circuitpython/issues/1992
if poor_wav_bug_workaround:
while True:
dacs.play(output_wave)
if time.monotonic() - prev_t >= frame_t:
break
else:
dacs.play(output_wave, loop=True)
while time.monotonic() - prev_t < frame_t:
pass
if not leave_wav_looping:
dacs.stop()
else:
while True:
### This gives a very flickery image with 4932 points
### slight flicker at 2552
### might be ok for 1000
for idx in range(0, len(rawdata), 2):
a0.value = rawdata[idx]
a1.value = rawdata[idx + 1]
if time.monotonic() - prev_t >= frame_t:
break
prev_t = time.monotonic()
angle += math.pi / 180 * 3 ### 72 degrees per frame
frame += 1
# Outline of the flower followed by the five
# Group 2
[(342.49622, 454.21659),
(346.959242969, 451.054080156),
(349.16935125, 444.29346125),
(349.74007, 396.99811),
(349.42067, 348.99811),
(346.15117, 331.03534),
(341.803838594, 322.622872031),
(336.10557625, 315.17921375),
(320.50984, 301.96305),
(315.24595, 297.9209),
(322.89745, 300.16203),
(338.78867125, 303.15162),
(354.51274, 302.19987),
(370.1502025, 297.314415),
(383.99038, 290.42349),
(425.3782575, 261.03182375),
(455.62553, 237.51598),
(457.673981406, 232.384370781),
(457.63498125, 226.75574125),
(455.656955469, 221.435746094),
(451.88833, 217.23004),
(411.03035375, 203.142875),
(364.28838, 189.00345),
(346.28838, 187.51289),
(334.345396094, 188.212601406),
(324.08682875, 190.43598375),
(314.755874531, 194.422959219),
(305.59573, 200.41345),
(298.69523, 205.64576),
(302.36566, 200.82194),
(309.1910175, 190.60812125),
(313.73687, 180.22634),
(316.80698125, 162.25769875),
(315.61122, 142.49811),
(302.2062, 97.30761225),
(287.72529, 54.616095),
(281.9467975, 48.27558525),
(273.17468, 46.774785),
(268.19440125, 47.74447575),
(264.37486, 50.652804),
(236.2211725, 88.324987),
(209.53225, 127.99811),
(202.6606625, 146.3071125),
(201.25938, 164.93584),
(203.77534, 181.49811),
(206.51089, 188.99811),
(205.9051675, 188.794985),
(203.43769, 185.49811),
(196.64267375, 177.104034375),
(188.75523, 169.97381),
(179.92702375, 164.224298125),
(170.30972, 159.97236),
(160.326935313, 157.051098125),
(148.6087275, 155.3990125),
(102.61522, 154.49966),
(60.16592325, 155.3425225),
(53.6551856875, 157.376749063),
(50.290496, 161.35986),
(47.372345, 168.60014),
(48.89669, 175.71523),
(74.532052, 211.99811),
(94.1360167813, 237.819985),
(108.59780025, 254.2254825),
(120.832361594, 264.08215625),
(133.75466, 270.25756),
(141.60613, 272.36428),
(152.49621, 273.38038),
(164.49621, 273.99811),
(158.0089, 275.81829),
(145.07552625, 280.9514125),
(133.8165275, 288.7022225),
(124.0311775, 299.24521125),
(115.51875, 312.75487),
(98.843153625, 358.473565),
(85.295136, 403.16722),
(85.26685925, 408.01758375),
(86.915068, 411.86681),
(92.4915405, 417.39844125),
(99.473822, 419.49811),
(143.00896275, 406.315715),
(190.36777, 389.38911),
(202.01838, 382.636295),
(212.26301, 373.79104),
(221.50430875, 362.505715),
(227.61924, 348.61117),
(230.74226, 339.12239),
(231.21585, 351.56025),
(232.0963625, 362.919155),
(234.30307, 370.76155),
(242.12680375, 385.41184875),
(253.38592, 399.00254),
(289.43734875, 427.02384125),
(327.49622, 454.1789),
(334.9740875, 456.36105375),
#(342.49622, 454.2166),
#(342.49622, 454.21659),
],
# Group 3
[(269.38148, 328.24811),
(260.235962344, 318.54971125),
(252.98225875, 304.9253925),
(249.221025781, 291.33056),
(249.150290957, 285.780265547),
(250.55292, 281.72062),
(254.134922402, 279.408903848),
(258.744026719, 280.396155156),
(263.916454863, 284.085617324),
(269.18842875, 289.88053375),
(278.175901406, 305.399702969),
(280.963844004, 313.930442559),
(281.99622, 322.17961),
(281.55819875, 326.77132),
(279.99622, 329.49811),
(275.74986, 331.3257375),
#(269.38148, 328.24811),
#(269.38148, 328.24811),
],
# Group 4
[(189.27613, 317.48919),
(186.689292012, 315.017226172),
(186.253231719, 310.95217),
(190.75285125, 299.8028675),
(200.613802656, 287.56145625),
(213.6749, 277.74811),
(220.431676309, 274.964493711),
(225.392900469, 274.551332812),
(228.531887832, 276.197175508),
(229.82195375, 279.59057),
(229.236413574, 284.420064492),
(226.748582656, 290.374207187),
(215.95931, 304.41063),
(208.563450625, 310.792326562),
(201.1146375, 315.3621975),
(194.417365625, 317.725924687),
#(189.27613, 317.48919),
#(189.27613, 317.48919),
],
# Group 5
[(270.49622, 263.99178),
(266.275620215, 261.866190078),
(264.014989219, 259.301005),
(263.608503301, 256.443141797),
(264.95033875, 253.4395175),
(272.455678906, 247.58265375),
(285.68442, 242.90575),
(302.642775, 241.59651875),
(316.00365, 244.06329),
(319.7235275, 248.4713),
(318.6949, 253.83523),
(310.640874688, 259.620080625),
(297.3441375, 263.7845675),
(282.673111563, 265.513523125),
#(270.49622, 263.99178),
#(270.49622, 263.99178),
],
# Group 6
[(202.04337, 252.52942),
(191.235123437, 247.592305),
(181.9467875, 241.23868),
(175.444952812, 234.5173375),
(172.99621, 228.47707),
(174.24765832, 224.997173086),
(177.684219687, 223.036961563),
(189.20598, 223.281585),
(203.748087812, 228.422920938),
(217.49714, 237.67295),
(224.516762344, 246.891496563),
(224.975280254, 250.442414727),
(223.57588375, 253.118295),
(220.450783652, 254.792036523),
(215.732190781, 255.336538437),
#(202.04337, 252.52942),
#(202.04337, 252.52942),
],
# Group 7
[(243.14004, 239.17141),
(240.444360469, 233.682861094),
(238.94700375, 225.78207875),
(239.96685, 206.99811),
(245.63492375, 191.82701),
(249.349385156, 186.715313438),
(252.99622, 184.38871),
(256.799735, 184.899581563),
(259.7174025, 187.9743),
(262.71503, 201.49811),
(261.901079688, 215.476273438),
(258.45465, 228.0064775),
(253.205227813, 237.032497812),
(250.16360918, 239.588868945),
(246.9823, 240.49811),
#(243.14004, 239.17141),
#(243.14004, 239.17141),
]
]