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annotate service/tinyScreen/tiny_screen.py @ 388:c146fa2bc7d4

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tinyscreen can flip images and render news Ignore-this: 72c89530e71d4c6f2550bb4deeccd807
author drewp@bigasterisk.com
date Wed, 02 Jan 2019 18:40:16 -0800
parents 5cdc6e85265f
children 5fc79536885a
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1 from docopt import docopt
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2 from patchablegraph import PatchableGraph, CycloneGraphHandler, CycloneGraphEventsHandler
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3 from rdflib import Namespace, URIRef, Literal, Graph
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4 from rdflib.parser import StringInputSource
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5 from twisted.internet import reactor
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6 import cyclone.web
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7 import sys, logging, time, textwrap
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8
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9 from luma.core.interface.serial import spi
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10 from luma.oled.device import ssd1331
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11 from PIL import Image, ImageFont, ImageDraw
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12 ROOM = Namespace('http://projects.bigasterisk.com/room/')
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13
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14 logging.basicConfig()
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15 log = logging.getLogger()
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16
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17 class Screen(object):
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18 def __init__(self, spiDevice=1, rotation=0):
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19 self._initOutput(spiDevice, rotation)
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20 self.news = ""
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21 self.animateTo(ROOM['boot'])
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22
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23 def _stateImage(self, state):
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24 return Image.open('anim/%s.png' % state.rsplit('/')[-1])
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25
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26 def _initOutput(self, spiDevice, rotation):
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27 self._dev = ssd1331(spi(device=spiDevice, port=0), rotation=rotation)
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28
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29 def setContrast(self, contrast):
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30 """0..255"""
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31 self._dev.contrast(contrast)
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32
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33 def hide(self):
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34 """Switches the display mode OFF, putting the device in low-power sleep mode."""
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35 self._dev.hide()
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36
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37 def show(self):
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38 self._dev.show()
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39
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40 def display(self, img):
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41 self._dev.display(img)
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42
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43 def animateTo(self, state):
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44 """
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45 boot
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46 sleep
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47 locked
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48 lockedUnknownKey
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49 unlockNews
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50 """
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51 self.goalState = state
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52 self.display(self._stateImage(state))
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53 if state == ROOM['unlockNews']:
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54 self.renderNews()
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55
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56 def setNews(self, text):
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57 self.news = text
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58 if self.goalState == ROOM['unlockNews']:
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59 # wrong during animation
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60 self.renderNews()
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61
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62 def renderNews(self):
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63 bg = self._stateImage(ROOM['unlockNews'])
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64 draw = ImageDraw.Draw(bg)
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65
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66 font = ImageFont.truetype("font/Oswald-SemiBold.ttf", 12)
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67 #w, h = font.getsize('txt')
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68 for i, line in enumerate(
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69 textwrap.fill(self.news, width=12).splitlines()):
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70 draw.text((24, 0 + 10 * i), line, font=font)
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71 self.display(bg)
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72
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73 class ScreenSim(Screen):
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74 def _initOutput(self, spiDevice, rotation):
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75 self.windowScale = 2
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76 import pygame
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77 self.pygame = pygame
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78 pygame.init()
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79 self.surf = pygame.display.set_mode(
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80 (96 * self.windowScale, 64 * self.windowScale))
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81 time.sleep(.05) # something was causing the 1st update not to show
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82
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83 def display(self, img):
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84 pgi = self.pygame.image.fromstring(
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85 img.tobytes(), img.size, img.mode)
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86 self.pygame.transform.scale(pgi, self.surf.get_size(), self.surf)
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87 self.pygame.display.flip()
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88
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89 def rdfGraphBody(body, headers):
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90 g = Graph()
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91 g.parse(StringInputSource(body), format='nt')
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92 return g
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93
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94 class OutputPage(cyclone.web.RequestHandler):
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95 def put(self):
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96 arg = self.request.arguments
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97 if arg.get('s') and arg.get('p'):
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98 subj = URIRef(arg['s'][-1])
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99 pred = URIRef(arg['p'][-1])
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100 turtleLiteral = self.request.body
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101 try:
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102 obj = Literal(float(turtleLiteral))
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103 except ValueError:
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104 obj = Literal(turtleLiteral)
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105 stmts = [(subj, pred, obj)]
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106 else:
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107 nt = self.request.body.replace("\\n", "\n") # wrong, but i can't quote right in curl
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108 g = rdfGraphBody(nt, self.request.headers)
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109 assert len(g)
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110 stmts = list(g.triples((None, None, None)))
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111 self._onStatement(stmts)
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112
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113 def _onStatement(self, stmts):
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114 """
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115 (disp :brightness 1.0 . )
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116 (disp :state :locked . )
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117 (disp :state :sleep . )
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118 (disp :state :readKeyUnlock . disp :news "some news text" . )
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119 """
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120 disp = ROOM['frontDoorOled']
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121 for stmt in stmts:
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122 if stmt[:2] == (disp, ROOM['news']):
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123 self.settings.screen.setNews(stmt[2].toPython())
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124 elif stmt[:2] == (disp, ROOM['state']):
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125 self.settings.screen.animateTo(stmt[2])
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126 else:
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127 log.warn("ignoring %s", stmt)
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128
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129 if __name__ == '__main__':
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130 arg = docopt("""
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131 Usage: tiny_screen.py [options]
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132
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133 -v Verbose
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134 -x Draw to X11 window, not output hardware
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135 """)
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136 log.setLevel(logging.WARN)
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137 if arg['-v']:
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138 from twisted.python import log as twlog
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139 twlog.startLogging(sys.stdout)
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140 log.setLevel(logging.DEBUG)
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141
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142 masterGraph = PatchableGraph()
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143
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144 if arg['-x']:
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145 screen = ScreenSim()
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146 else:
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147 screen = Screen(spiDevice=1)
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148
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149 port = 10013
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150 reactor.listenTCP(port, cyclone.web.Application([
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151 (r"/()", cyclone.web.StaticFileHandler,
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152 {"path": ".", "default_filename": "index.html"}),
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153 (r"/graph", CycloneGraphHandler, {'masterGraph': masterGraph}),
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154 (r"/graph/events", CycloneGraphEventsHandler,
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155 {'masterGraph': masterGraph}),
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156 (r'/output', OutputPage),
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157 ], screen=screen, masterGraph=masterGraph, debug=arg['-v']),
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158 interface='::')
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159 log.warn('serving on %s', port)
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160
c146fa2bc7d4 tinyscreen can flip images and render news
drewp@bigasterisk.com
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161 reactor.run()