pyinst: rsib.py annotate

annotate rsib.py @ 75:576f112e0aba

Fix read timeout handling so it works over imperfect links.

author	Daniel O'Connor <doconnor@gsoft.com.au>
date	Fri, 27 Sep 2024 09:27:33 +0930
parents	b6ebe05f250f
children	84f96c5fe791

rev	line source
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	1 #!/usr/bin/env python
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	2
74 b6ebe05f250f Add some commentry about what it works with Daniel O'Connor <doconnor@gsoft.com.au> parents: 72 diff changeset	3 # Copyright (c) 2024
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	4 # Daniel O'Connor <darius@dons.net.au>. All rights reserved.
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	5 #
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	6 # Redistribution and use in source and binary forms, with or without
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	7 # modification, are permitted provided that the following conditions
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	8 # are met:
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	9 # 1. Redistributions of source code must retain the above copyright
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	10 # notice, this list of conditions and the following disclaimer.
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	11 # 2. Redistributions in binary form must reproduce the above copyright
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	12 # notice, this list of conditions and the following disclaimer in the
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	13 # documentation and/or other materials provided with the distribution.
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	14 #
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	15 # THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	16 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	17 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	18 # ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	19 # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	20 # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	21 # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	22 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	23 # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	24 # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	25 # SUCH DAMAGE.
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	26 #
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	27
74 b6ebe05f250f Add some commentry about what it works with Daniel O'Connor <doconnor@gsoft.com.au> parents: 72 diff changeset	28 # Helper functions to talk to Rohde & Schwarz test equipment over the
b6ebe05f250f Add some commentry about what it works with Daniel O'Connor <doconnor@gsoft.com.au> parents: 72 diff changeset	29 # RSIB protocol.
b6ebe05f250f Add some commentry about what it works with Daniel O'Connor <doconnor@gsoft.com.au> parents: 72 diff changeset	30 #
b6ebe05f250f Add some commentry about what it works with Daniel O'Connor <doconnor@gsoft.com.au> parents: 72 diff changeset	31 # This is for older test equipment (tested on an FSP7 Windows NT 3.51..)
b6ebe05f250f Add some commentry about what it works with Daniel O'Connor <doconnor@gsoft.com.au> parents: 72 diff changeset	32 #
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	33 # Reverse engineered from the Linux library & example program at
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	34 # http://epsrv.astro.umk.pl/~ep/irbene/rsib/library/RSIB-Linux.zip
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	35 #
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	36 # There are 2 socket connections for some reason.
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	37 # The first seems to do [nearly] all the work
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	38 #
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	39 # Packets to the instrument
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	40 # On connection:
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	41 # -> 00 00 00 40
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	42 # <- 00 00 00 40 a0 04 00 00
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	43 #
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	44 # We need to echo back the last 4 bytes of the reply to a second
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	45 # socket opened to the same port. I don't know what that socket is for
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	46 # though.
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	47 #
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	48 # Send a command:
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	49 # -> 00 00 00 05 90 00 01 2a 49 44 4e 3f .......* IDN?
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	50 #
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	51 # Offs Value Meaning
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	52 # 00 00 ?
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	53 # 01 00 ?
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	54 # 02 00 ?
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	55 # 03 05 Length
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	56 # 04 90 MsgID
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	57 # 05 00 ?
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	58 # 06 03 Seq number
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	59 # 07 2a (*) Cmd byte 0
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	60 # 08 49 (I) Cmd byte 1
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	61 # 09 44 (D) Cmd byte 2
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	62 # 10 4a (N) Cmd byte 3
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	63 # 10 3f (?) Cmd byte 4
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	64 #
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	65 # Interactive program seems to cap length at 0x99 but perhaps the
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	66 # first 4 bytes are length.
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	67 #
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	68 # Reply to command:
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	69 # <- 00 00 00 23 80 00 01 52 6f 68 ...
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	70 #
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	71 # Offs Value Meaning
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	72 # 00 00 Length 31..24
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	73 # 01 00 of 23..16
da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	74 # 02 00 block 15..8
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	75 # 03 23 7..0
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	76 # 04 00/80 Is 0x80 if this is the last block in a sequence
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	77 # 05 00 ?
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	78 # 06 01 Seq number
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	79
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	80 MSG_HELLO = 0x40 # We send this on connect
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	81 MSG_CMD = 0x90 # Command to the instrument
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	82 MSG_SRQ = 0x91 # Query SRQ
26 226ea06bc050 Use "new" style exceptions. Daniel O'Connor <darius@dons.net.au> parents: 21 diff changeset	83
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	84 import socket
75 576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	85 import time
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	86
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	87 class RSIBDevice(object):
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	88 hello = '\x00\x00\x00\x40'
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	89 docmd = '\x00\x00\x00\x05\x90\x00\x01'
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	90
26 226ea06bc050 Use "new" style exceptions. Daniel O'Connor <darius@dons.net.au> parents: 21 diff changeset	91 def __init__(self, host, port = None):
226ea06bc050 Use "new" style exceptions. Daniel O'Connor <darius@dons.net.au> parents: 21 diff changeset	92 if port == None:
226ea06bc050 Use "new" style exceptions. Daniel O'Connor <darius@dons.net.au> parents: 21 diff changeset	93 port = 2525
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	94 self.host = host
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	95 self.port = port
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	96
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	97 s1 = socket.socket()
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	98 s1.settimeout(5)
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	99 s1.connect((self.host, self.port))
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	100 s1.send(b'\x00\x00\x00\x40')
00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	101 rx = b''
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	102 while len(rx) < 8:
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	103 rx = rx + s1.recv(8)
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	104 if rx == b'':
00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	105 raise IOError("EOF from device")
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	106
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	107 s2 = socket.socket()
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	108 s2.settimeout(5)
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	109 s2.connect((self.host, self.port))
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	110 s2.send(rx[4:])
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	111
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	112 self.s1 = s1
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	113 self.s2 = s2
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	114 self.tag = 0
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	115
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	116 def write(self, cmd, timeout = 0.5):
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	117 """Send data (string) to the instrument"""
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	118 self.s1.settimeout(timeout)
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	119
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	120 if len(cmd) > 0x99:
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	121 raise ValueError("Command too long")
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	122
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	123 # Pre-increment for easy comparison in read
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	124 self.tag = (self.tag + 1) & 0xff
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	125 msg = b'\x00\x00\x00' + bytes([len(cmd)]) + b'\x90\x00' + bytes([self.tag]) + cmd.encode('ascii')
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	126 self.s1.send(msg)
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	127
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	128 def read(self, timeout = 0.5):
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	129 """Read data from the device, waits for up to timeout seconds for each TCP read"""
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	130
75 576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	131 if timeout is not None:
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	132 timeout = time.clock_gettime(time.CLOCK_MONOTONIC) + timeout
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	133 self.s1.settimeout(timeout)
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	134
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	135 reply = b''
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	136 last = False
da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	137 while not last:
da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	138 # Fetch the header
75 576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	139 hdr = b''
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	140 remain = 7
75 576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	141 while len(hdr) < 7:
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	142 rx = self.s1.recv(remain)
75 576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	143 if len(rx) == 0:
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	144 if timeout is not None and time.clock_gettime(time.CLOCK_MONOTONIC) >= timeout:
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	145 raise IOError("EOF from device")
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	146 else:
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	147 time.sleep(0.1)
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	148 remain -= len(rx)
75 576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	149 hdr += rx
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	150 rxlen = rx[0] << 24 \| rx[1] << 16 \| rx[2] << 8 \| rx[3]
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	151 #print(rx, rxlen)
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	152 if self.tag != rx[6]:
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	153 raise IOError("Reply out of order, got 0x%02x expected 0x%02x" % (rx[6], self.tag))
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	154 if rx[4] == 0x80:
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	155 #print('EOM')
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	156 last = True
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	157 if rx[5] != 0:
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	158 print("Mystery byte %d != 0" % (rx[5]))
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	159
75 576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	160 # Fetch the actual data block now we know the length
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	161 remain = rxlen
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	162 while remain > 0:
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	163 rx = self.s1.recv(remain)
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	164 if len(rx) == 0:
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	165 if timeout is not None and time.clock_gettime(time.CLOCK_MONOTONIC) >= timeout:
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	166 raise IOError("EOF from device")
75 576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	167 else:
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	168 time.sleep(0.1)
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	169
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	170 reply += rx
576f112e0aba Fix read timeout handling so it works over imperfect links. Daniel O'Connor <doconnor@gsoft.com.au> parents: 74 diff changeset	171 remain -= len(rx)
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	172
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	173 return(reply)
85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	174
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	175 def ask(self, s, timeout = None):
da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	176 '''Wrapper to send a command and wait for a reply'''
da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	177 self.write(s)
da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	178 return self.read(timeout = timeout)
da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	179
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	180 def queryrsb(self):
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	181 msg = b'\x00\x00\x00\x00\xd1\x18\x00'
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	182 self.s2.send(msg)
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	183
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	184 reply = b''
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	185 while len(reply) < 7:
55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	186 rx = self.s2.recv(7)
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	187 if rx == b'':
00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	188 raise IOError("EOF from device")
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	189 reply += rx
6 85dfc0babc36 Add basic RSIB parser and example program. Daniel O'Connor <darius@dons.net.au> parents: diff changeset	190
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	191 # '\x00\x00\x00\x00\x80\x04\x01' => STB = 4
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	192 if rx[4] != b'\x80':
00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	193 raise IOError("Incorrect Msg ID in response to STB query")
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	194
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	195 return rx[5]
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	196
55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	197 def waitsrq(self):
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	198 msg = b'\x00\x00\x00\x00\xb1\x00\x00'
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	199
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	200 def testsrq(self):
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	201 msg = b'\x00\x00\x00\x00\x91\x00\x00'
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	202 self.s2.send(msg)
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	203 reply = b''
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	204 while len(reply) < 7:
55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	205 rx = self.s2.recv(7)
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	206 if rx == b'':
00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	207 raise IOError("EOF from device")
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	208 reply += rx
72 da3558dec4e3 Fetch large data blocks correctly. Daniel O'Connor <doconnor@gsoft.com.au> parents: 71 diff changeset	209
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	210 # 00 00 00 00 80 14 08 - SRQ = 0
55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	211 # 00 00 00 00 a0 64 07 - SRQ = 1
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	212 if rx == b'\x00\x00\x00\x00\x80\x14\x08':
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	213 return False
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	214 elif rx == b'\x00\x00\x00\x00\xa0\x64\x07':
14 55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	215 return True
55c8dae6d1db Add test code and some (not enabled) sequence checking. Daniel O'Connor <darius@dons.net.au> parents: 6 diff changeset	216 else:
71 00800345fbae Python3ise RSIB code Daniel O'Connor <doconnor@gsoft.com.au> parents: 56 diff changeset	217 raise IOError("Unknown SRQ byte sequence - " + str(rx))

Mercurial > ~darius > hgwebdir.cgi > pyinst

annotate rsib.py @ 75:576f112e0aba