Mercurial > templog
annotate old/server/ts.py @ 537:92632a6d1dc6
fix gpio
author | Matt Johnston <matt@ucc.asn.au> |
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date | Wed, 20 May 2015 23:10:37 +0800 |
parents | 95043860e437 |
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1 #!/usr/bin/env python2.7 |
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2 |
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3 # time that the bluetooth takes to get going? |
403 | 4 EXTRA_WAKEUP = -3 |
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5 |
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6 FETCH_TRIES = 3 |
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7 |
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8 # avoid turning off the bluetooth etc. |
348 | 9 TESTING = False |
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10 |
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11 import sys |
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12 # for wrt |
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13 sys.path.append('/root/python') |
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14 import httplib |
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15 import time |
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16 import traceback |
334 | 17 import binascii |
18 import hmac | |
340 | 19 import zlib |
342 | 20 import urllib |
21 import urllib2 | |
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22 import logging |
438 | 23 import socket |
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24 |
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25 L = logging.info |
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26 W = logging.warning |
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27 E = logging.error |
334 | 28 |
29 import config | |
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30 |
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31 from utils import monotonic_time, retry, readline, crc16 |
372 | 32 import utils |
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33 |
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34 import bluetooth |
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35 |
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36 def get_socket(addr): |
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37 s = bluetooth.BluetoothSocket( bluetooth.RFCOMM ) |
403 | 38 L("connecting") |
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39 s.connect((addr, 1)) |
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40 s.setblocking(False) |
403 | 41 s.settimeout(1) |
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42 |
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43 return s |
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44 |
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45 |
418 | 46 def flush(sock): |
429 | 47 ret = [] |
48 while True: | |
49 l = readline(sock) | |
50 if l: | |
51 ret.append(l) | |
52 else: | |
53 break | |
54 return ret | |
55 | |
56 def encode_extra(extra_lines): | |
57 return ['extra%d=%s' % (n, l.strip()) for (n,l) in enumerate(extra_lines)] | |
418 | 58 |
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59 @retry() |
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60 def fetch(sock): |
429 | 61 extra_lines = flush(sock) |
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62 sock.send("fetch\n") |
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63 |
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64 crc = 0 |
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65 |
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66 lines = [] |
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67 l = readline(sock) |
429 | 68 if not l: |
69 return None | |
70 | |
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71 if l != 'START\n': |
429 | 72 W("Bad expected START line '%s'\n" % l.rstrip('\n')) |
73 extra_lines.append(l) | |
74 return encode_extra(extra_lines) | |
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75 crc = crc16(l, crc) |
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76 |
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77 while True: |
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78 l = readline(sock) |
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79 |
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80 crc = crc16(l, crc) |
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81 |
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82 if l == 'END\n': |
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83 break |
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84 |
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85 lines.append(l.rstrip('\n')) |
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86 |
429 | 87 lines += encode_extra(extra_lines) |
88 | |
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89 for d in lines: |
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90 L("Received: %s" % d) |
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91 |
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92 l = readline(sock) |
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93 recv_crc = None |
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94 try: |
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95 k, v = l.rstrip('\n').split('=') |
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96 if k == 'CRC': |
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97 recv_crc = int(v) |
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98 if recv_crc < 0 or recv_crc > 0xffff: |
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99 recv_crc = None |
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100 except ValueError: |
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101 pass |
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102 |
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103 if recv_crc is None: |
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104 W("Bad expected CRC line '%s'\n" % l.rstrip('\n')) |
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105 return None |
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106 |
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107 if recv_crc != crc: |
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108 W("Bad CRC: calculated 0x%x vs received 0x%x\n" % (crc, recv_crc)) |
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109 return None |
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110 |
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111 return lines |
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112 |
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113 @retry() |
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114 def turn_off(sock): |
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115 if TESTING: |
348 | 116 return 99 |
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117 L("Sending btoff") |
418 | 118 flush(sock) |
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119 sock.send("btoff\n"); |
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120 # read newline |
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121 l = readline(sock) |
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122 if not l: |
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123 W("Bad response to btoff") |
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124 return None |
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125 |
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126 if not l.startswith('next_wake'): |
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127 W("Bad response to btoff '%s'" % l) |
348 | 128 return None |
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129 L("Next wake line %s" % l) |
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130 |
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131 toks = dict(v.split('=') for v in l.split(',')) |
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132 |
398 | 133 rem = int(toks['rem']) |
134 tick_secs = int(toks['tick_secs']) | |
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135 tick_wake = int(toks['tick_wake']) + 1 |
398 | 136 next_wake = int(toks['next_wake']) |
137 | |
138 rem_secs = float(rem) / tick_wake * tick_secs | |
139 | |
140 next_wake_secs = next_wake - rem_secs | |
141 L("next_wake_secs %f\n", next_wake_secs) | |
142 return next_wake_secs | |
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143 |
338 | 144 @retry() |
145 def clear_meas(sock): | |
418 | 146 flush(sock) |
338 | 147 sock.send("clear\n"); |
148 l = readline(sock) | |
149 if l and l.rstrip() == 'cleared': | |
150 return True | |
151 | |
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152 E("Bad response to clear '%s'" % str(l)) |
338 | 153 return False |
154 | |
334 | 155 def send_results(lines): |
335 | 156 enc_lines = binascii.b2a_base64(zlib.compress('\n'.join(lines))) |
342 | 157 mac = hmac.new(config.HMAC_KEY, enc_lines).hexdigest() |
334 | 158 |
342 | 159 url_data = urllib.urlencode( {'lines': enc_lines, 'hmac': mac} ) |
334 | 160 con = urllib2.urlopen(config.UPDATE_URL, url_data) |
338 | 161 result = con.read(100) |
162 if result == 'OK': | |
163 return True | |
164 else: | |
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165 W("Bad result '%s'" % result) |
338 | 166 return False |
334 | 167 |
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168 def do_comms(sock): |
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169 L("do_comms") |
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170 d = None |
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171 # serial could be unreliable, try a few times |
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172 d = fetch(sock) |
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173 if not d: |
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174 return |
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175 |
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176 res = send_results(d) |
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177 if not res: |
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178 return |
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179 |
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180 clear_meas(sock) |
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181 |
416 | 182 next_wake = 600 |
183 #next_wake = turn_off(sock) | |
438 | 184 #sock.close() |
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185 return next_wake |
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186 |
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187 testcount = 0 |
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188 |
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189 def sleep_for(secs): |
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190 until = monotonic_time() + secs |
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191 while True: |
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192 length = until - monotonic_time() |
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193 if length <= 0: |
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194 return |
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195 time.sleep(length) |
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196 |
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197 def setup_logging(): |
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198 logging.basicConfig(format='%(asctime)s %(message)s', |
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199 datefmt='%m/%d/%Y %I:%M:%S %p', |
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200 level=logging.INFO) |
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201 |
438 | 202 def get_net_socket(host, port): |
203 s = socket.create_connection((host, port)) | |
204 s.setblocking(False) | |
205 s.settimeout(1) | |
206 return s | |
207 | |
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208 def main(): |
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209 setup_logging() |
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210 |
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211 L("Running templog rfcomm server") |
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212 |
371 | 213 if '--daemon' in sys.argv: |
214 utils.cheap_daemon() | |
215 | |
403 | 216 next_wake_time = 0 |
438 | 217 |
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218 while True: |
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219 sock = None |
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220 try: |
438 | 221 sock = get_net_socket(config.SERIAL_HOST, config.SERIAL_PORT) |
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222 except Exception, e: |
400 | 223 #logging.exception("Error connecting") |
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224 pass |
438 | 225 |
226 if not sock: | |
227 sleep_for(config.SLEEP_TIME) | |
228 continue | |
229 | |
230 while True: | |
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231 try: |
438 | 232 do_comms(sock) |
233 sleep_for(config.SLEEP_TIME) | |
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234 except Exception, e: |
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235 logging.exception("Error in do_comms") |
438 | 236 break |
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237 |
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238 if __name__ == '__main__': |
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239 main() |