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annotate light9/io/__init__.py @ 1287:1382cb43a3ca

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dmxserver -d udmx to talk to the first udmx usb adapter found Ignore-this: 9495a02620509bbd03271b47f9ab3282
author Drew Perttula <drewp@bigasterisk.com>
date Sat, 14 May 2016 23:56:02 +0000
parents e263c4bd73f9
children 37cbb245d93c
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1 from __future__ import division
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2 import sys
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3
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4 class BaseIO:
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5 def __init__(self):
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6 self.dummy=1
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7 self.__name__ = 'BaseIO'
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8 # please override and set __name__ to your class name
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9
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10 def golive(self):
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11 """call this if you want to promote the dummy object becomes a live object"""
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12 print "IO: %s is going live" % self.__name__
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13 self.dummy=0
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14 # you'd override with additional startup stuff here,
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15 # perhaps even loading a module and saving it to a class
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16 # attr so the subclass-specific functions can use it
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17
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18 def godummy(self):
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19 print "IO: %s is going dummy" % self.__name__
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20 self.dummy=1
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21 # you might override this to close ports, etc
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22
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23 def isdummy(self):
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24 return self.dummy
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25
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26 def __repr__(self):
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27 if self.dummy:
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28 return "<dummy %s instance>" % self.__name__
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29 else:
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30 return "<live %s instance>" % self.__name__
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31
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32 # the derived class will have more methods to do whatever it does,
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33 # and they should return dummy values if self.dummy==1.
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34
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35 class ParportDMX(BaseIO):
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36 def __init__(self, dimmers=68):
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37 BaseIO.__init__(self)
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38 self.__name__='ParportDMX'
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39 self.dimmers = dimmers
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41 def golive(self):
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42 BaseIO.golive(self)
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43 import parport
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44 self.parport = parport
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45 self.parport.getparport()
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46
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47 def sendlevels(self, levels):
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48 if self.dummy:
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49 return
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50
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51 levels = list(levels) + [0]
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52 # if levels[14] > 0: levels[14] = 100 # non-dim
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53 self.parport.outstart()
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54 for p in range(1, self.dimmers + 2):
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55 self.parport.outbyte(levels[p-1]*255 / 100)
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56
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57 class UsbDMX(BaseIO):
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58 def __init__(self, dimmers=72, port='/dev/dmx0'):
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59 BaseIO.__init__(self)
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60 self.__name__ = "UsbDMX"
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61 self.port = port
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62 self.out = None
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63 self.dimmers = dimmers
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64
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65 def _dmx(self):
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66 if self.out is None:
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67 if self.port == 'udmx':
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68 from udmx import Udmx
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69 self.out = Udmx()
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70 self.out.write = self.out.SendDMX
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71 else:
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72 sys.path.append("dmx_usb_module")
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73 from dmx import Dmx
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74 self.out = Dmx(self.port)
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75 return self.out
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77 def sendlevels(self, levels):
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78 if self.dummy:
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79 return
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80 # I was outputting on 76 and it was turning on the light at
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81 # dmx75. So I added the 0 byte.
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82 packet = '\x00' + ''.join([chr(int(lev * 255 / 100))
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83 for lev in levels]) + "\x55"
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84 self._dmx().write(packet)
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85
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86 class SerialPots(BaseIO):
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87 """
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88 this is a dummy object (that returns zeros forever) until you call startup()
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89 which makes it bind to the port, etc
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90
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91 """
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92 def __init__(self):
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93 # no init here- call getport() to actually initialize
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94 self.dummy=1
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95 self.__name__='SerialPots' # i thought this was automatic!
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96
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97 def golive(self):
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98 """
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99 ls -l /dev/i2c-0
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100 crw-rw-rw- 1 root root 89, 0 Jul 11 12:27 /dev/i2c-0
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101 """
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102 import serport
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103 self.serport = serport
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104
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105 self.f = open("/dev/i2c-0","rw")
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106
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107 # this is for a chip with A0,A1,A2 lines all low:
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108 port = 72
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109
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110 from fcntl import *
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111
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112 I2C_SLAVE = 0x0703 #/* Change slave address */
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113 ioctl(self.f,I2C_SLAVE,port)
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114 self.dummy=0
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115
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116 def godummy(self):
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117 BaseIO.godummy(self)
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118 self.f.close()
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119
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120 def getlevels(self):
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121 if self.dummy:
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122 return (0,0,0,0)
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123 else:
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124 return self.serport.read_all_adc(self.f.fileno())
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125
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126
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127 if __name__=='__main__':
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128
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129 """ tester program that just dumps levels for a while """
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130 from time import sleep
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131 from serport import *
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132
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133 i=0
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134 while i<100:
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135 sleep(.033)
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136 i=i+1
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137
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138 print read_all_adc(f.fileno())
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139