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implemented better ring buffer and cleaned up code

This commit is contained in:
Stefan Kögl 2014-03-08 22:02:50 +01:00
parent 1bda5388d6
commit 72f9a44b4e
1 changed files with 57 additions and 65 deletions
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122
sensors2osc/sensors2osc/main.py
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@ -2,24 +2,19 @@
# -*- coding: utf-8 -*-
import argparse
import ConfigParser
import os.path
import random
import re
import select
import serial
import socket
import sys
import time
import struct
import datetime
try:
from chaosc.c_osc_lib import *
from chaosc.c_osc_lib import OSCMessage
except ImportError as e:
print(e)
from chaosc.osc_lib import *
from chaosc.osc_lib import OSCMessage
class Forwarder(object):
@ -33,18 +28,11 @@ class Forwarder(object):
self.serial.timeout = 0
self.buf_ser2osc = ""
#try:
self.serial.open()
#self.serial.setRTS(False)
self.alive = True
#except Exception, e:
#print "opening", e
#self.serial.close()
def close(self):
"""Close all resources and unpublish service"""
print "%s: closing..." % (self.device, )
self.alive = False
self.serial.close()
@ -52,7 +40,7 @@ class EHealth2OSC(Forwarder):
def __init__(self, actor, platform, device):
super(EHealth2OSC, self).__init__(actor, platform, device)
def handleRead(self, osc_sock):
def handle_read(self, osc_sock):
data = self.serial.readline()[:-2]
print repr(data)
try:
@ -84,7 +72,7 @@ class EKG2OSC(Forwarder):
def __init__(self, actor, platform, device):
super(EKG2OSC, self).__init__(actor, platform, device)
def handleRead(self, osc_sock):
def handle_read(self, osc_sock):
t = ord(self.serial.read(1))
osc_message = OSCMessage("/%s/ekg" % self.actor)
osc_message.appendTypedArg(t, "i")
@ -92,57 +80,62 @@ class EKG2OSC(Forwarder):
class RingBuffer(object):
def __init__(self, length):
self.length = length
self.ring_buf = [-1 for i in xrange(length)]
self.head = 0
def append(self, value):
self.ring_buf[self.head] = value
self.head = (self.head + 1) % self.length
def getData(self):
print "getData", self.ring_buf, self.head
data = list()
for i in range(7, 1, -1):
value = self.ring_buf[(self.head - i) % self.length]
if value == -1:
raise ValueError("not complete")
data.append(value)
if data[0] != 0x0 and data[1] != 0xff:
raise ValueError("not synced")
return data[2:]
class Pulse2OSC(Forwarder):
def __init__(self, actor, platform, device):
super(Pulse2OSC, self).__init__(actor, platform, device)
self.buf = [0 for i in xrange(24)]
self.position = 0
self.start = -1
self.buf = RingBuffer(6)
self.heartbeat_send = False
def handleRead(self, osc_sock):
def handle_read(self, osc_sock):
t = ord(self.serial.read(1))
pos = (self.position + 1) % 24
self.buf[pos] = t
self.position = pos
self.buf.append(t)
if t == 0:
self.start = pos
#print "start", self.start
if self.start > -1:
data = range(6)
for i in range(6):
data[i] = self.buf[(self.start + i) % 24]
sync1, sync2, heart_signal, heart_rate, o2, pulse = data
#print sync1, sync2, heart_signal, heart_rate, o2, pulse
if pulse == 245 and not self.heartbeat_send:
osc_message = OSCMessage("/%s/heartbeat" % self.actor)
osc_message.appendTypedArg(1, "i")
osc_message.appendTypedArg(heart_rate, "i")
osc_message.appendTypedArg(o2, "i")
osc_sock.sendall(osc_message.encode_osc())
print "heartbeat", datetime.datetime.now(), heart_signal
self.heartbeat_send = True
elif pulse == 1 and self.heartbeat_send:
#print "off heartbeat", datetime.datetime.now(), heart_signal
self.heartbeat_send = False
osc_message = OSCMessage("/%s/heartbeat" % self.actor)
osc_message.appendTypedArg(0, "i")
osc_message.appendTypedArg(heart_rate, "i")
osc_message.appendTypedArg(o2, "i")
osc_sock.sendall(osc_message.encode_osc())
#osc_message = OSCMessage("/%s/o2" % self.actor)
#osc_message.appendTypedArg(o2, "i")
#osc_sock.sendall(osc_message.encode_osc())
#osc_message = OSCMessage("/%s/heartrate" % self.actor)
#osc_message.appendTypedArg(heart_rate, "i")
#osc_sock.sendall(osc_message.encode_osc())
self.start = -1
try:
heart_signal, heart_rate, o2, pulse = self.buf.getData()
if pulse == 245 and not self.heartbeat_send:
osc_message = OSCMessage("/%s/heartbeat" % self.actor)
osc_message.appendTypedArg(1, "i")
osc_message.appendTypedArg(heart_rate, "i")
osc_message.appendTypedArg(o2, "i")
osc_sock.sendall(osc_message.encode_osc())
print "heartbeat", datetime.datetime.now(), heart_signal
self.heartbeat_send = True
elif pulse == 1 and self.heartbeat_send:
#print "off heartbeat", datetime.datetime.now(), heart_signal
self.heartbeat_send = False
osc_message = OSCMessage("/%s/heartbeat" % self.actor)
osc_message.appendTypedArg(0, "i")
osc_message.appendTypedArg(heart_rate, "i")
osc_message.appendTypedArg(o2, "i")
osc_sock.sendall(osc_message.encode_osc())
except ValueError, e:
print e
@ -156,7 +149,6 @@ def main():
args = parser.parse_args(sys.argv[1:])
connections = list()
osc_sock = socket.socket(2, 2, 17)
osc_sock.connect((args.chaosc_host, args.chaosc_port))
@ -199,14 +191,14 @@ def main():
raise ValueError("unknown description %r for device %r" % (description, device))
else:
print "device missing", device
m = OSCMessage("/DeviceMissing")
m.appendTypedArg(description[0], "s")
m.appendTypedArg(description[1], "s")
osc_sock.sendall(m.encode_osc())
message = OSCMessage("/DeviceMissing")
message.appendTypedArg(description[0], "s")
message.appendTypedArg(description[1], "s")
osc_sock.sendall(message.encode_osc())
read_map = {}
for forwarder in used_devices.values():
read_map[forwarder.serial] = forwarder.handleRead
read_map[forwarder.serial] = forwarder.handle_read
readers, writers, errors = select.select(read_map, [], [], 0.1)
#print "readers", readers