diff --git a/kuukar_config.py b/kuukar_config.py index 3c70dc2..381c0b2 100644 --- a/kuukar_config.py +++ b/kuukar_config.py @@ -29,3 +29,5 @@ LEDS_DATA_PIN = 3 LEDS_NUM = 15 DHT22_PIN = 5 + +SERIAL_LCD = "/dev/serial/by-id/..." \ No newline at end of file diff --git a/kuukar_cv.py b/kuukar_cv.py index 2aac7f5..ebd4ee2 100644 --- a/kuukar_cv.py +++ b/kuukar_cv.py @@ -6,7 +6,6 @@ class cv: def __init__(self, lcd: lcd, leds: leds) -> None: self.lcd = lcd self.leds = leds - self.noise = noise def capture_image(self): pass diff --git a/kuukar_lcd.py b/kuukar_lcd.py index 11faf1b..0891383 100644 --- a/kuukar_lcd.py +++ b/kuukar_lcd.py @@ -1,6 +1,7 @@ +import kuukar_nextion class lcd: def __init__(self) -> None: - pass + self.nextion = kuukar_nextion.nextion() def keke_uwu(self): pass diff --git a/kuukar_nextion.py b/kuukar_nextion.py index e69de29..76b29db 100644 --- a/kuukar_nextion.py +++ b/kuukar_nextion.py @@ -0,0 +1,99 @@ +import binascii +from time import sleep +import serial +import threading + +from kuukar_config import SERIAL_LCD + +DATATYPE_NUMBER = '71' +DATATYPE_STRING = '70' + +PRESSTYPE_PRESS = '01' +PRESSTYPE_RELEASE = '00' + +EVENT_TOUCH = '65' + +class nextion: + + __commands_output_buffer__ = [] + + def __init__(self) -> None: + self.device = serial.Serial(SERIAL_LCD, baudrate=19200, timeout=5) + self.__send_stop_bit__() + self.reset_device() + threading.Thread(target=self.__serial_reader__).start() + threading.Thread(target=self.__serial_writer__).start() + + def send_command(self, command: str): + command = bytes(command, 'ascii') + self.__commands_output_buffer__.append(command) + + def __serial_writer__(self): + if len(self.__commands_output_buffer__) > 0: + self.device.write(self.__commands_output_buffer__.pop(0)) + self.__send_stop_bit__() + + def reset_device(self): + self.send_command("rest") + + def __get_stop_bit__(self) -> bytearray: + stop_bit = bytearray() + stop_bit.append(0xFF) + stop_bit.append(0xFF) + stop_bit.append(0XFF) + return stop_bit + + def __send_stop_bit__(self): + self.device.write(self.__get_stop_bit__()) + + def __serial_reader__(self) -> None: + ser = self.device + while True: + if self.allow_serial_read: + buffer_length = ser.in_waiting + if buffer_length > 0: + self.handle_serial(self.read_serial()) + + def read_serial(self) -> list: + ser = self.device + data = ser.read_until(self.get_stop_bit()) + data = data[0:len(data)-3] + data: list = data.hex('/').split('/') + return data + + def handle_serial(self, data: list): + message_type = data.pop(0) + if message_type == EVENT_TOUCH: + self.handle_touch_event(data) + + def handle_touch_event(self, data: list): + page = int(data.pop(0), 16) + component_id = int(data.pop(0), 16) + press_type = data.pop(0) + print("Got a touch event at page "+str(page)+" in component "+str(component_id) + + " with type "+str(press_type)) + + def get_attribute(self, attribute: str): + self.allow_serial_read = False + self.send_command("get "+str(attribute)) + sleep(0.1) + data = self.read_serial() + self.allow_serial_read = True + data_type = data.pop(0) + if data_type == DATATYPE_STRING: + data = nextion.hex_string_list_to_bytes(data) + return data.decode('ascii') + elif data_type == DATATYPE_NUMBER: + return nextion.little_endian_to_int(data) + + @staticmethod + def hex_string_list_to_bytes(hexstring_list: list) -> bytes: + hexstring = ''.join(hexstring_list) + return binascii.unhexlify(hexstring) + + @staticmethod + def little_endian_to_int(data: list) -> int: + data.reverse() + hexstring = ''.join(data) + value = int(hexstring, 16) + return value \ No newline at end of file