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-rw-r--r--prototype/fw/tools/ser_test.py73
1 files changed, 73 insertions, 0 deletions
diff --git a/prototype/fw/tools/ser_test.py b/prototype/fw/tools/ser_test.py
new file mode 100644
index 0000000..191124b
--- /dev/null
+++ b/prototype/fw/tools/ser_test.py
@@ -0,0 +1,73 @@
+#!/usr/bin/env python3
+
+import struct
+import itertools
+import binascii
+import string
+import serial
+import time
+import zlib
+
+from cobs import cobs
+
+if __name__ == '__main__':
+ import argparse
+ parser = argparse.ArgumentParser()
+ parser.add_argument('port')
+ parser.add_argument('-b', '--baudrate', type=int, default=115200)
+ args = parser.parse_args()
+
+ ser = serial.Serial(args.port, args.baudrate, timeout=0)
+
+ byte_count = 0
+ line = b''
+ packet = b''
+ start_time = time.time()
+ seq = 0
+
+ make_color = lambda x: f'\033[38;5;{x}m'
+ field_colors = [ make_color(x) for x in [ 48, 48, 48, 48, 220, 220, 220, 220, 207, 207, 207, 207 ] ]
+ last_tx = time.time()
+ while True:
+ data = ser.read()
+ for c in data:
+ if byte_count == 0:
+ print(f'\033[38;5;244m{time.time() - start_time: 8.3f} \033[0m', end='')
+
+ col = '\033[91m' if c == 0 else '\033[0m'
+ print(f'{col}{c:02x}', end=' ')
+ line += bytes([c])
+ byte_count += 1
+ if c == 0:
+ print(' ' * (16 - byte_count), end='\033[0m\n')
+ byte_count = 16
+ try:
+ payload = cobs.decode(packet)
+ if len(payload) > 4:
+ crc = zlib.crc32(payload[:-4])
+ ref_crc = struct.pack('<I', crc)
+ crc_ok = (crc,) == struct.unpack('<I', payload[-4:])
+ else:
+ crc_ok = False
+ ref_crc = ''
+ print(' '.join(f'{col if col else ""}{c if c else 0:02x}' for col, c in itertools.zip_longest(field_colors,
+ payload)), 'OK' if crc_ok else f'WRONG')
+ except cobs.DecodeError:
+ print('COBS framing error')
+ packet = b''
+ else:
+ packet += bytes([c])
+ isprint = lambda c: c in b'0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~ '
+ if byte_count == 16:
+ printable = ''.join( chr(c) if isprint(c) else '.' for c in line )
+ print(f'\033[93m | {printable}\033[0m')
+ byte_count = 0
+ line = b''
+
+
+ if time.time() - last_tx > 0.01:
+ data = struct.pack('<I', seq)
+ seq += 1
+ ser.write(cobs.encode(data + struct.pack('<I', zlib.crc32(data))) + b'\0')
+ last_tx = time.time()
+ #time.sleep(0.01)