implemented better ring buffer and cleaned up code
This commit is contained in:
Stefan Kögl
parent
1bda5388d6
commit
72f9a44b4e
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@ -2,24 +2,19 @@
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# -*- coding: utf-8 -*-
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import argparse
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import ConfigParser
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import os.path
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import random
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import re
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import select
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import serial
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import socket
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import sys
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import time
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import struct
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import datetime
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try:
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from chaosc.c_osc_lib import *
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from chaosc.c_osc_lib import OSCMessage
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except ImportError as e:
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print(e)
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from chaosc.osc_lib import *
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from chaosc.osc_lib import OSCMessage
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class Forwarder(object):
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@ -33,18 +28,11 @@ class Forwarder(object):
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self.serial.timeout = 0
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self.buf_ser2osc = ""
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#try:
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self.serial.open()
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#self.serial.setRTS(False)
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self.alive = True
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#except Exception, e:
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#print "opening", e
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#self.serial.close()
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def close(self):
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"""Close all resources and unpublish service"""
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print "%s: closing..." % (self.device, )
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self.alive = False
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self.serial.close()
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@ -52,7 +40,7 @@ class EHealth2OSC(Forwarder):
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def __init__(self, actor, platform, device):
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super(EHealth2OSC, self).__init__(actor, platform, device)
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def handleRead(self, osc_sock):
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def handle_read(self, osc_sock):
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data = self.serial.readline()[:-2]
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print repr(data)
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try:
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@ -84,7 +72,7 @@ class EKG2OSC(Forwarder):
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def __init__(self, actor, platform, device):
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super(EKG2OSC, self).__init__(actor, platform, device)
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def handleRead(self, osc_sock):
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def handle_read(self, osc_sock):
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t = ord(self.serial.read(1))
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osc_message = OSCMessage("/%s/ekg" % self.actor)
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osc_message.appendTypedArg(t, "i")
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@ -92,31 +80,44 @@ class EKG2OSC(Forwarder):
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class RingBuffer(object):
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def __init__(self, length):
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self.length = length
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self.ring_buf = [-1 for i in xrange(length)]
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self.head = 0
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def append(self, value):
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self.ring_buf[self.head] = value
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self.head = (self.head + 1) % self.length
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def getData(self):
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print "getData", self.ring_buf, self.head
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data = list()
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for i in range(7, 1, -1):
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value = self.ring_buf[(self.head - i) % self.length]
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if value == -1:
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raise ValueError("not complete")
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data.append(value)
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if data[0] != 0x0 and data[1] != 0xff:
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raise ValueError("not synced")
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return data[2:]
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class Pulse2OSC(Forwarder):
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def __init__(self, actor, platform, device):
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super(Pulse2OSC, self).__init__(actor, platform, device)
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self.buf = [0 for i in xrange(24)]
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self.position = 0
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self.start = -1
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self.buf = RingBuffer(6)
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self.heartbeat_send = False
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def handleRead(self, osc_sock):
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def handle_read(self, osc_sock):
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t = ord(self.serial.read(1))
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pos = (self.position + 1) % 24
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self.buf[pos] = t
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self.position = pos
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self.buf.append(t)
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if t == 0:
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self.start = pos
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try:
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heart_signal, heart_rate, o2, pulse = self.buf.getData()
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#print "start", self.start
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if self.start > -1:
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data = range(6)
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for i in range(6):
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data[i] = self.buf[(self.start + i) % 24]
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sync1, sync2, heart_signal, heart_rate, o2, pulse = data
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#print sync1, sync2, heart_signal, heart_rate, o2, pulse
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if pulse == 245 and not self.heartbeat_send:
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osc_message = OSCMessage("/%s/heartbeat" % self.actor)
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osc_message.appendTypedArg(1, "i")
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@ -133,16 +134,8 @@ class Pulse2OSC(Forwarder):
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osc_message.appendTypedArg(heart_rate, "i")
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osc_message.appendTypedArg(o2, "i")
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osc_sock.sendall(osc_message.encode_osc())
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#osc_message = OSCMessage("/%s/o2" % self.actor)
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#osc_message.appendTypedArg(o2, "i")
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#osc_sock.sendall(osc_message.encode_osc())
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#osc_message = OSCMessage("/%s/heartrate" % self.actor)
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#osc_message.appendTypedArg(heart_rate, "i")
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#osc_sock.sendall(osc_message.encode_osc())
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self.start = -1
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except ValueError, e:
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print e
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@ -156,7 +149,6 @@ def main():
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args = parser.parse_args(sys.argv[1:])
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connections = list()
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osc_sock = socket.socket(2, 2, 17)
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osc_sock.connect((args.chaosc_host, args.chaosc_port))
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@ -199,14 +191,14 @@ def main():
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raise ValueError("unknown description %r for device %r" % (description, device))
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else:
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print "device missing", device
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m = OSCMessage("/DeviceMissing")
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m.appendTypedArg(description[0], "s")
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m.appendTypedArg(description[1], "s")
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osc_sock.sendall(m.encode_osc())
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message = OSCMessage("/DeviceMissing")
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message.appendTypedArg(description[0], "s")
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message.appendTypedArg(description[1], "s")
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osc_sock.sendall(message.encode_osc())
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read_map = {}
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for forwarder in used_devices.values():
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read_map[forwarder.serial] = forwarder.handleRead
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read_map[forwarder.serial] = forwarder.handle_read
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readers, writers, errors = select.select(read_map, [], [], 0.1)
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#print "readers", readers
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