diff options
| -rwxr-xr-x | hexcom.py | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/hexcom.py b/hexcom.py new file mode 100755 index 0000000..c9f290b --- /dev/null +++ b/hexcom.py @@ -0,0 +1,46 @@ +#!/usr/bin/env python3 + +import time +import string + +def _print_line(write, ts, line, width=16): + h,m,s,ms = int(ts//3600), int((ts//60)%60), int(ts%60), int((ts%1.0) * 1000) + timestamp = f'{h: 3d}:{m:02d}:{s:02d}:{ms:03d}' + line = list(line) + [None]*(width-len(line)) + hexcol = '\033[94m' + col = lambda b, s: s if b != 0 else f'\033[91m{s}{hexcol}' + hexfmt = ' '.join( + ' '.join(col(b, f'{b:02x}') if b is not None else ' ' for b in line[i*8:i*8+8]) + for i in range(1 + (len(line)-1)//8)) + asciifmt = ''.join(chr(c) if c is not None and chr(c) in string.printable else '.' for c in line) + write(f'\033[38;5;244m{timestamp} {hexcol}{hexfmt} \033[38;5;244m|\033[92m{asciifmt}\033[38;5;244m|\033[0m', flush=True, end='') + +def hexcom(write, ser, width=16): + current_line = b'' + start = time.time() + while ser.is_open: + data = ser.read_all() # non-blocking, flushes buffer + if not data: + data = ser.read(1) # blocking + ts = time.time() + + current_line += data + write('\033[2K\r', end='') + while len(current_line) > width: + chunk, current_line = current_line[:width], current_line[width:] + _print_line(write, ts-start, chunk, width=width) + write() + _print_line(write, ts-start, current_line, width=width) + +if __name__ == '__main__': + import argparse + import serial + + parser = argparse.ArgumentParser() + parser.add_argument('serial') + parser.add_argument('baudrate') + parser.add_argument('-w', '--width', type=int, default=16, help='Number of bytes to display in one line') + args = parser.parse_args() + + ser = serial.Serial(args.serial, args.baudrate) + hexcom(print, ser, width=args.width) |