165 lines
4.8 KiB
Python
165 lines
4.8 KiB
Python
import argparse
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import asyncio
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import os
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import socket
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import sys
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import time
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import bleak
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CAT_NAME = 'GB03'
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CAT_SERVICE = '0000ae30-0000-1000-8000-00805f9b34fb'
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CAT_CHARAC = '0000ae01-0000-1000-8000-00805f9b34fb'
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DEFAULT_SOCKET = '/tmp/catprint.s'
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async def getcat():
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devices = await bleak.BleakScanner.discover()
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for d in devices:
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print(f'- {d.name}')
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if d.name == CAT_NAME:
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return d
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return None
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async def getcharac(client):
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await client.get_services()
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for service in client.services:
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if service.uuid != CAT_SERVICE:
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continue
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for charac in service.characteristics:
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if charac.uuid != CAT_CHARAC:
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continue
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return charac
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return None
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async def endprint(client):
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pass
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CHECKSUM_TABLE = [0, 7, 14, 9, 28, 27, 18, 21, 56, 63, 54, 49, 36, 35, 42, 45,
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112, 119, 126, 121, 108, 107, 98, 101, 72, 79, 70, 65, 84, 83, 90, 93,
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224, 231, 238, 233, 252, 251, 242, 245, 216, 223, 214, 209, 196, 195,
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202, 205, 144, 151, 158, 153, 140, 139, 130, 133, 168, 175, 166, 161,
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180, 179, 186, 189, 199, 192, 201, 206, 219, 220, 213, 210, 255, 248,
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241, 246, 227, 228, 237, 234, 183, 176, 185, 190, 171, 172, 165, 162,
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143, 136, 129, 134, 147, 148, 157, 154, 39, 32, 41, 46, 59, 60, 53, 50,
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31, 24, 17, 22, 3, 4, 13, 10, 87, 80, 89, 94, 75, 76, 69, 66, 111, 104,
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97, 102, 115, 116, 125, 122, 137, 142, 135, 128, 149, 146, 155, 156,
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177, 182, 191, 184, 173, 170, 163, 164, 249, 254, 247, 240, 229, 226,
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235, 236, 193, 198, 207, 200, 221, 218, 211, 212, 105, 110, 103, 96,
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117, 114, 123, 124, 81, 86, 95, 88, 77, 74, 67, 68, 25, 30, 23, 16, 5,
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2, 11, 12, 33, 38, 47, 40, 61, 58, 51, 52, 78, 73, 64, 71, 82, 85, 92,
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91, 118, 113, 120, 127, 106, 109, 100, 99, 62, 57, 48, 55, 34, 37, 44,
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43, 6, 1, 8, 15, 26, 29, 20, 19, 174, 169, 160, 167, 178, 181, 188,
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187, 150, 145, 152, 159, 138, 141, 132, 131, 222, 217, 208, 215, 194,
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197, 204, 203, 230, 225, 232, 239, 250, 253, 244, 243]
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def checksum(data):
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cs = 0
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for d in data:
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cs = CHECKSUM_TABLE[cs ^ d]
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return cs
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def packet(command, payload):
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return bytes([
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0x51, 0x78, # magic
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command,
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0, # always 0
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len(payload),
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0, # always 0
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]) + bytes(payload) + bytes([checksum(payload), 0xff])
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async def startprint(client):
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await client.write_gatt_char(CAT_CHARAC, packet(0xbe, [0]))
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await asyncio.sleep(0.05)
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await client.write_gatt_char(CAT_CHARAC, packet(0xaf, [0xff, 0xff]))
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await asyncio.sleep(0.05)
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sent = [0]
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async def scanline(client, data):
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if sent[0] == 15:
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sent[0] = 0
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response = True
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else:
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sent[0] += 1
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response = False
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response = False
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await client.write_gatt_char(CAT_CHARAC, packet(0xa2, data), response)
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#await client.write_gatt_char(CAT_CHARAC, packet(0xa1, [1, 0]))
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await asyncio.sleep(0.05)
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async def feedpaper(client, lines=120):
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await client.write_gatt_char(CAT_CHARAC, packet(0xa1, [lines, 0]))
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await asyncio.sleep(0.02 * lines)
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def parse_args():
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parser = argparse.ArgumentParser(description='Print stuff on a cat.')
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parser.add_argument('--address', help='address of the printer')
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parser.add_argument('--socket', dest='socket_path',
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help='socket of the daemon',
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default=DEFAULT_SOCKET)
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return parser.parse_args()
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async def main(address=None, socket_path=None):
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if address is None:
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while True:
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device = await getcat()
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if device is None:
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print('No cat printer found :(')
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time.sleep(1)
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continue
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print('Cat printer found!')
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print(f'{device.address}')
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address = device.address
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break
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while True:
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client = bleak.BleakClient(address)
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await client.connect()
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if client is not None:
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print('connected!')
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break
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else:
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print('could not connect')
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time.sleep(1)
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await startprint(client)
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if os.path.exists(socket_path):
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os.remove(socket_path)
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server = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
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server.bind(socket_path)
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while True:
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datagram, addr = server.recvfrom(1024)
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cmd = datagram[0]
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print(f'got stuff from {addr}: {cmd}')
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start = time.time()
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if cmd == ord('f'): # feed
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await feedpaper(client)
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elif cmd == ord('s'): # scan
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data = datagram[1:]
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await scanline(client, data)
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else:
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continue
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print(f'done in {time.time() - start} s')
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server.sendto(b'done', addr)
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if __name__ == "__main__":
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asyncio.run(main(**vars(parse_args())))
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