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LightSaber
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Stephan Richter 2 years ago
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  1. 126
      MCP23S17.py
  2. 1
      README
  3. 163
      lightChip.py
  4. 70
      lightsaber.py

126
MCP23S17.py
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#!/usr/bin/python
import time
try:
import RPi.GPIO as GPIO
except:
print "Was not able to import GPIO"
exit()
class MCP23S17(object):
def send(self, value):
# wert senden
for i in range(8):
if (value & 0x80):
GPIO.output(self.mosi, GPIO.HIGH)
else:
GPIO.output(self.mosi, GPIO.LOW)
# negative flanke des clocksignals generieren
GPIO.output(self.clock, GPIO.HIGH)
GPIO.output(self.clock, GPIO.LOW)
value <<=1 # Bitfolge eine Position nach links schieben
def sendSPI(self, register, data):
GPIO.output(self.cable_select, GPIO.LOW) # CS aktiv (LOW-Aktiv)
self.send(self.opcode)
self.send(register)
self.send(data)
GPIO.output(self.cable_select, GPIO.HIGH) # CS inaktiv
def readSPI(self,register):
value = 0
GPIO.output(self.cable_select, GPIO.LOW) # CS aktiv (Low-Aktiv)
self.send(self.opcode|0x01)
self.send(register)
for i in range(8):
value <<= 1
if (GPIO.input(self.miso)):
value |= 0x01
GPIO.output(self.clock, GPIO.HIGH)
GPIO.output(self.clock, GPIO.LOW)
GPIO.output(self.cable_select, GPIO.HIGH)# CS deaktivieren
return value
def activateAdressing(self):
print " activating adressing for chip #{}".format(self.addr)
self.sendSPI(0x0A, 0x08)
self.sendSPI(0x0B, 0x08)
def activatePullups(self):
print " activating pullups for chip #{}".format(self.addr)
self.sendSPI(0x0C, 0xFF) # Pullups (de)aktivieren
self.sendSPI(0x0D, 0xFF) # Pullups (de)aktivieren
def setDirection(self, dirA, dirB):
print " setting directions for chip #{}".format(self.addr)
self.sendSPI(0x00, dirA) # In/Out setzen
self.sendSPI(0x01, dirB) # In/Out setzen
def invertLogic(self):
print " activating inverted logic for chip #{}".format(self.addr)
self.sendSPI(0x02,0xFF) # Logik invertieren
self.sendSPI(0x03,0xFF) # Logik invertieren
def reset(self):
self.activateAdressing();
if self.input:
self.setDirection(0xff,0xff)
self.activatePullups();
self.invertLogic()
else:
self.setDirection(0x00,0x00)
def __init__(self,addr,cable_select, clock, miso, mosi,input):
print "Creating chip with address {}".format(addr);
self.addr=addr
self.opcode = addr<<1 | 0x40
self.cable_select=cable_select
self.clock=clock
self.miso=miso
self.mosi=mosi
self.input=input
self.reset()
if __name__ == "__main__":
GPIO.cleanup()
GPIO.setmode(GPIO.BOARD);
GPIO.setwarnings(True);
CS=13
CLK=11
MOSI=7
MISO=5
CS=16
CLK=12
MOSI=10
MISO=8
print "configuring line pins."
GPIO.setup(CLK, GPIO.OUT)
GPIO.setup(MOSI, GPIO.OUT)
GPIO.setup(MISO, GPIO.IN)
GPIO.setup(CS, GPIO.OUT)
print "initializing line level."
GPIO.output(CS, GPIO.HIGH);
GPIO.output(CLK, GPIO.LOW);
chip = MCP23S17(0,CS, CLK, MISO, MOSI,False)
chip.sendSPI(0x13,0)
chip.sendSPI(0x12,0)
time.sleep(1)
chip.sendSPI(0x13,0b11111111)
chip.sendSPI(0x12,0b11111111)
time.sleep(1)
chip.sendSPI(0x13,0)
chip.sendSPI(0x12,0)
GPIO.cleanup()

1
README
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Python-basiertes Steuer-Programm für die LED-Matrix

163
lightChip.py
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#!/usr/bin/python
from MCP23S17 import *
from thread import *
from random import randint
class lightChip(MCP23S17):
def __init__(self, addr,cable_select,clock,miso,mosi):
MCP23S17.__init__(self,addr, cable_select, clock, miso, mosi, False)
self.setDirection(0xff,0x00) # configure a as input, b as outputs
self.sendSPI(0x0C, 0xFF) # pullups aktivieren
self.sendSPI(0x02, 0xFF) # logik invertieren
self.state=[0,0,0,0,0,0,0,0]
start_new_thread(self.shine,())
def shine(self):
self.shining=True
lastval = 0
selected = 0
while self.shining:
d=0
for t in range(10,0,-1):
for chnl in range(0,8):
if self.state[chnl]>=t:
d|=1<<chnl
self.sendSPI(0x13,d)
time.sleep(0.00001)
val = self.readSPI(0x12);
if val != lastval:
if val == 32:
selected = (selected+1) % 8
start_new_thread(self.blink,(selected,))
elif val == 64:
self.state[selected] = min(self.state[selected]+1,10)
elif val == 128:
self.state[selected] = max(self.state[selected]-1,0)
elif val == 96:
for channel in range(0,8):
self.state[channel]=10
elif val == 192:
for channel in range(0,8):
self.state[channel]=0
elif val == 160:
self.halloween()
else:
print val
lastval = val
self.sendSPI(0x13,0)
print "stopped"
def activate(self,num):
self.sendSPI(0x13,1<<(num-1))
def halloween(self):
for c in range(0,50):
channel = randint(1,8)
duration = randint(10,100)/400.0
count = randint(1,20)
pause = randint(1,120)
for i in range(0,count):
self.activate(channel)
time.sleep(randint(0,20)/250.0)
self.activate(11)
time.sleep(randint(10,150)/200.0)
self.activate(6)
time.sleep(pause)
def blink(self,channel):
old = self.state[channel]
for c in range(0,2):
self.state[channel] = 1
time.sleep(0.01)
self.state[channel] = 0
time.sleep(0.2)
self.state[channel] = old
if __name__ == "__main__":
GPIO.cleanup()
GPIO.setmode(GPIO.BOARD);
GPIO.setwarnings(True);
CS=13
CLK=11
MOSI=7
MISO=5
CS=16
CLK=12
MOSI=10
MISO=8
print "configuring line pins."
GPIO.setup(CLK, GPIO.OUT)
GPIO.setup(MOSI, GPIO.OUT)
GPIO.setup(MISO, GPIO.IN)
GPIO.setup(CS, GPIO.OUT)
print "initializing line level."
GPIO.output(CS, GPIO.HIGH);
GPIO.output(CLK, GPIO.LOW);
chip = lightChip(0,CS, CLK, MISO, MOSI)
t=0.06
for i in range(0,6):
for b in range(1,11):
for c in range(0,8):
chip.state[c]=b
time.sleep(t)
time.sleep(0.5)
for b in range(10,-1,-1):
for c in range(0,8):
chip.state[c]=b
time.sleep(t)
t=0.1
for i in range(0,20):
chip.state[1]=10
time.sleep(t)
chip.state[1]=0
chip.state[4]=10
time.sleep(t)
chip.state[4]=0
chip.state[2]=10
time.sleep(t)
chip.state[2]=0
chip.state[3]=10
time.sleep(t)
chip.state[3]=0
chip.state[6]=10
time.sleep(t)
chip.state[6]=0
chip.state[7]=10
time.sleep(t)
chip.state[7]=0
chip.state[7]=0
t=0.06
for i in range(0,100):
chip.state[1]=10
chip.state[2]=10
chip.state[3]=10
chip.state[4]=10
chip.state[5]=10
time.sleep(t)
chip.state[1]=0
chip.state[2]=0
chip.state[3]=0
chip.state[4]=0
chip.state[5]=0
chip.state[0]=10
chip.state[7]=10
time.sleep(t)
chip.state[7]=0
chip.state[0]=0
time.sleep(1)
GPIO.cleanup()

70
lightsaber.py
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#!/usr/bin/python
from MCP23S17 import *
from lightChip import *
from BaseHTTPServer import BaseHTTPRequestHandler, HTTPServer
class HTTPServ(BaseHTTPRequestHandler):
def do_GET(self):
try:
self.send_response(200)
self.send_header('Content-Type','text/html')
self.end_headers()
parts = self.path.split('/',2)
chanel=int(parts[1])
prec=int(parts[2])
self.wfile.write('<html>');
self.wfile.write('<head><title></title><style>*{ background-color: #000; color: #fff; } td{ text-align: center; border: 1px solid #222; border-radius: 5px; padding: 5px; } table{ border-spacing: 10px 0; width: 100%; height: 100%}</style></head>');
self.wfile.write('<body>')
self.wfile.write('<table>');
self.wfile.write("<tr>\n");
self.wfile.write("</tr>\n");
for dim in range(0,11):
self.wfile.write("<tr>\n");
for col in range(0,8):
self.wfile.write('<td onclick="window.location=\'../../{}/{}\';">{}/{}</td>'.format(col,dim,(1+col),dim))
self.wfile.write("</tr>\n");
self.wfile.write('</table>');
self.wfile.write('</body>')
self.wfile.write('</html>');
chip.state[chanel]=prec
return
except IOError:
self.send_error(404,'Not found')
if __name__ == "__main__":
GPIO.cleanup()
GPIO.setmode(GPIO.BOARD);
GPIO.setwarnings(True);
CS=13
CLK=11
MOSI=7
MISO=5
CS=16
CLK=12
MOSI=10
MISO=8
print "configuring line pins."
GPIO.setup(CLK, GPIO.OUT)
GPIO.setup(MOSI, GPIO.OUT)
GPIO.setup(MISO, GPIO.IN)
GPIO.setup(CS, GPIO.OUT)
print "initializing line level."
GPIO.output(CS, GPIO.HIGH);
GPIO.output(CLK, GPIO.LOW);
chip = lightChip(0,CS, CLK, MISO, MOSI)
try:
server = HTTPServer(('',80), HTTPServ)
print 'started server'
server.serve_forever()
except KeyboardInterrupt:
server.socket.close()
GPIO.cleanup()
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