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chatboard.py
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chatboard.py
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#!/bin/env python3
import logging
from time import sleep
from collections import OrderedDict
import subprocess
import keyboard
import click
logging.basicConfig(level=logging.INFO)
logger = logging.getLogger("chatboard")
logger.setLevel(logging.DEBUG)
@click.command()
@click.option(
"--port",
default="/dev/ttyUSB0",
help="serial port with a chatboard",
type=click.Path(exists=True),
)
@click.option(
"--sound",
default=False,
is_flag=True,
help="play sounds when typing. requires files type{1-3}.wav",
)
def main(port, sound):
import serial
port = serial.Serial(port, 9600, timeout=None)
sleep(0.3)
if sound:
from random import randrange
from playsound import playsound
class TypeSounds:
def __init__(self):
self.key_paths = ("type1.wav", "type2.wav", "type3.wav")
self.newline = "ding.wav"
def _random_key(self):
return randrange(len(self.key_paths))
def _play(self, file):
playsound(file)
def key(self):
self._play(self.key_paths[self._random_key()])
def enter(self):
self._play(self.newline)
ts = TypeSounds()
if port.in_waiting > 0:
logger.info("needs flushing…", end="")
store_timeout = port.timeout
port.timeout = 0.4
port.read_until("\r") # flush
port.timeout = store_timeout
logger.debug("flushed")
def find(string) -> bool:
retries = 10
while retries:
x = port.read(len(string))
if len(x) == len(string):
if x.decode("ascii").strip() == string.strip():
return True
retries -= 1
sleep(0.4)
return False
search_response = OrderedDict(
{
"AT\r": b"OK\r\n",
"AT+CGMM\r": b"OK\r\n",
"AT+CGMR\r": b"OK\r\n",
# user input needed
"AT*EDME?\r": b"OK\r\n",
"AT*ESVM?\r": b"OK\r\n",
# init done
"AT*ESVM=0\r": b"OK\r\n",
"AT+CKPD=": b"OK\r\n",
"AT*ESVM=1\r": b"OK\r\n",
}
)
init_len = 5
numeric_mode = True
while True:
buffer = None
while not buffer:
buffer = port.read_until(b"\r") # block for timeout
logger.debug(f"raw rx from the keyboard: {buffer}")
try:
key = buffer.decode("ascii")
except UnicodeDecodeError:
logger.warning("received bytes are messed-up")
key = buffer.decode("ascii", "ignore")
if key in search_response.keys():
# forward search
init_keys = list(search_response.keys())[:init_len]
if key in init_keys:
index = init_keys.index(key) + 1
logger.info(f"keyboard found {index}/{init_len} !")
if index == 3:
logger.info("(Now press SMS key on the chatboard)")
if index == 5:
# SMS or email - ascii mode on
numeric_mode = False
port.write(search_response[key])
else:
logger.debug(f"got: {repr(key)}")
# reverse search
extended_keys = list(search_response.keys())[init_len:]
for extended_key in extended_keys:
if extended_key in key:
index = extended_keys.index(extended_key) + 1
if index == 2: # CKPD
key = key.strip()
key = key.replace('"', "")
value = key.split("=")[1]
# repeat ?
anti_repeat = (
True
if (value.find("1c") == 0 or value.find("0c") == 0)
else False
)
if anti_repeat:
value = value[2:]
logger.debug("(repeat)")
# long press
longpress = True if value[-3:] == (",20") else False
if longpress:
value = value[:-3]
logger.debug("(longpress)")
# character ?
char = value[0]
if value == len(value) * char:
if value == "<":
if longpress:
send_key("home", True)
else:
send_key("left", True)
elif value == ">":
if longpress:
send_key("end", True)
else:
send_key("right", True)
elif value == "c":
if longpress:
send_key("ctrl+backspace", True)
else:
send_key("backspace", True)
elif value == "s":
if longpress:
send_key("enter", True)
else:
send_key("yes", True)
numeric_mode = True
elif value == "e":
if longpress:
send_key("esc", True)
numeric_mode = True
else:
send_key("no", True)
numeric_mode = True
elif value == "*":
if longpress:
send_key("8")
elif not numeric_mode:
send_key("*")
elif value == "#":
if longpress:
send_key("3")
elif not numeric_mode:
send_key("#")
else:
# digits in alpha mode are strange
if not numeric_mode and char.isdigit() and longpress:
pseudo_numeric_mode = True
else:
pseudo_numeric_mode = False
# normal chars
try:
if value.isdigit() and len(value) > 1:
numeric_mode = False
if numeric_mode or pseudo_numeric_mode:
char = value
else:
char = charmap[char][len(value) - 1]
logger.debug(f"character: {char}")
except ValueError:
pass
except (IndexError, KeyError):
logger.debug(f"skipping: {value}")
else:
send_key(char)
else:
logger.warning(f"unknown keypress: {value}")
port.write(search_response[extended_key])
def send_key(key, raw=False):
logger.debug(f"<{key}>")
try:
ts.key()
except NameError:
pass
if raw:
keyboard.send(key)
else:
keyboard.write(key)
nvm_char = "□" # nevermind it, as those are just some useless greek letters (on my keyboard at least)
# keymap from T18z manual p.22, https://data2.manualslib.com/pdf2/41/4001/400047-ericsson/t18z.pdf?450a6521678afdc25a1fc91d48d4df46
charmap = {
"1": " -?!,.:;\"'<=>()1",
"2": "abc" + nvm_char * 5 + "2" + nvm_char,
"3": "def" + nvm_char * 2 + "3" + nvm_char * 2,
"4": "ghi" + nvm_char + "4",
"5": "jkl" + "5" + nvm_char,
"6": "mno" + nvm_char * 4 + "6",
"7": "pqrs" + nvm_char + "7" + nvm_char * 2,
"8": "tuv" + nvm_char * 2 + "8",
"9": "wxyz" + "9",
"0": "+&@/" + nvm_char + "%$£" + nvm_char * 4 + "0" + nvm_char * 4,
"#": "#*",
}
# UINPUT_KEY_MAPPING = {
# 'q': uinput.KEY_Q,
# 'w': uinput.KEY_W,
# }
#
# def init_uinput():
#
# # Make sure uinput kernel module is loaded.
# subprocess.check_call(["modprobe", "uinput"])
# device = uinput.Device(UINPUT_KEY_MAPPING.values())
#
# return device
if __name__ == "__main__":
main()
# default mode: numeric mode. only works: yes/no, digits, long press causes digit, shifted digits are digits, backspace (longpress for ctrl+backspace), arrows