diff options
Diffstat (limited to 'qemu/roms/seabios/scripts/readserial.py')
| -rwxr-xr-x | qemu/roms/seabios/scripts/readserial.py | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/qemu/roms/seabios/scripts/readserial.py b/qemu/roms/seabios/scripts/readserial.py deleted file mode 100755 index a7383e835..000000000 --- a/qemu/roms/seabios/scripts/readserial.py +++ /dev/null @@ -1,190 +0,0 @@ -#!/usr/bin/env python -# Script that can read from a serial device and show timestamps. -# -# Copyright (C) 2009 Kevin O'Connor <kevin@koconnor.net> -# -# This file may be distributed under the terms of the GNU GPLv3 license. - -# Usage: -# scripts/readserial.py /dev/ttyUSB0 115200 - -import sys, os, time, select, optparse - -from python23compat import as_bytes - -# Reset time counter after this much idle time. -RESTARTINTERVAL = 60 -# Number of bits in a transmitted byte - 8N1 is 1 start bit + 8 data -# bits + 1 stop bit. -BITSPERBYTE = 10 - -def calibrateserialwrite(outfile, byteadjust): - # Build 4000 bytes of dummy data. - data = "0123456789" * 4 + "012345678" + "\n" - data = data * 80 - while 1: - st = time.time() - outfile.write(as_bytes(data)) - outfile.flush() - et = time.time() - sys.stdout.write( - "Wrote %d - %.1fus per char (theory states %.1fus)\n" % ( - len(data), (et-st) / len(data) * 1000000, byteadjust * 1000000)) - sys.stdout.flush() - time.sleep(3) - -def calibrateserialread(infile, byteadjust): - starttime = lasttime = 0 - totalchars = 0 - while 1: - select.select([infile], [], []) - d = infile.read(4096) - curtime = time.time() - if curtime - lasttime > 1.0: - if starttime and totalchars: - sys.stdout.write( - "Calibrating on %d bytes - %.1fus per char" - " (theory states %.1fus)\n" % ( - totalchars, - float(lasttime - starttime) * 1000000 / totalchars, - byteadjust * 1000000)) - totalchars = 0 - starttime = curtime - else: - totalchars += len(d) - lasttime = curtime - -def readserial(infile, logfile, byteadjust): - lasttime = 0 - while 1: - # Read data - try: - res = select.select([infile, sys.stdin], [], []) - except KeyboardInterrupt: - sys.stdout.write("\n") - return -1 - if sys.stdin in res[0]: - # Got keyboard input - force reset on next serial input - sys.stdin.read(1) - lasttime = 0 - if len(res[0]) == 1: - continue - d = infile.read(4096) - if not d: - return 0 - datatime = time.time() - - datatime -= len(d) * byteadjust - - # Reset start time if no data for some time - if datatime - lasttime > RESTARTINTERVAL: - starttime = datatime - charcount = 0 - isnewline = 1 - msg = "\n\n======= %s (adjust=%.1fus)\n" % ( - time.asctime(time.localtime(datatime)), byteadjust * 1000000) - sys.stdout.write(msg) - logfile.write(as_bytes(msg)) - lasttime = datatime - - # Translate unprintable chars; add timestamps - out = as_bytes("") - for c in d: - if isnewline: - delta = datatime - starttime - (charcount * byteadjust) - out += "%06.3f: " % delta - isnewline = 0 - oc = ord(c) - charcount += 1 - datatime += byteadjust - if oc == 0x0d: - continue - if oc == 0x00: - out += "<00>\n" - isnewline = 1 - continue - if oc == 0x0a: - out += "\n" - isnewline = 1 - continue - if oc < 0x20 or oc >= 0x7f and oc != 0x09: - out += "<%02x>" % oc - continue - out += c - - if (sys.version_info > (3, 0)): - sys.stdout.buffer.write(out) - else: - sys.stdout.write(out) - sys.stdout.flush() - logfile.write(out) - logfile.flush() - -def main(): - usage = "%prog [options] [<serialdevice> [<baud>]]" - opts = optparse.OptionParser(usage) - opts.add_option("-f", "--file", - action="store_false", dest="serial", default=True, - help="read from unix named pipe instead of serialdevice") - opts.add_option("-n", "--no-adjust", - action="store_false", dest="adjustbaud", default=True, - help="don't adjust times by serial rate") - opts.add_option("-c", "--calibrate-read", - action="store_true", dest="calibrate_read", default=False, - help="read from serial port to calibrate it") - opts.add_option("-C", "--calibrate-write", - action="store_true", dest="calibrate_write", default=False, - help="write to serial port to calibrate it") - opts.add_option("-t", "--time", - type="float", dest="time", default=None, - help="time to write one byte on serial port (in us)") - options, args = opts.parse_args() - serialport = 0 - baud = 115200 - if len(args) > 2: - opts.error("Too many arguments") - if len(args) > 0: - serialport = args[0] - if len(args) > 1: - baud = int(args[1]) - byteadjust = float(BITSPERBYTE) / baud - if options.time is not None: - byteadjust = options.time / 1000000.0 - if not options.adjustbaud: - byteadjust = 0.0 - - if options.serial: - # Read from serial port - try: - import serial - except ImportError: - print(""" -Unable to find pyserial package ( http://pyserial.sourceforge.net/ ). -On Linux machines try: yum install pyserial -Or: apt-get install python-serial -""") - sys.exit(1) - ser = serial.Serial(serialport, baud, timeout=0) - - if options.calibrate_read: - calibrateserialread(ser, byteadjust) - return - if options.calibrate_write: - calibrateserialwrite(ser, byteadjust) - return - - logname = time.strftime("seriallog-%Y%m%d_%H%M%S.log") - f = open(logname, 'wb') - if options.serial: - readserial(ser, f, byteadjust) - else: - # Read from a pipe - while 1: - ser = os.fdopen(os.open(serialport, os.O_RDONLY|os.O_NONBLOCK), 'rb') - res = readserial(ser, f, byteadjust) - ser.close() - if res < 0: - break - -if __name__ == '__main__': - main() |