79 lines
2.8 KiB
Python
79 lines
2.8 KiB
Python
"""
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An example "program" which can be used with the ProgramChooser library, see also main.py
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Copyright (C) 2024 Benjamin Burkhardt <bluefox@privacynerd.de>
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This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
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"""
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"""
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@ Feature: Fades "HELLO" over two lines in and out
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"""
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import machine
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from machine import I2C, Pin
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from PCF8574 import I2C_LCD
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import time
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I2C_ADDR = 0x27
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I2C_NUM_ROWS = 2
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I2C_NUM_COLS = 16
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i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000)
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lcd = I2C_LCD(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)
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lcd.custom_char(0, bytearray([0x03,0x03,0x03,0x03,0x03,0x03,0x03,0x03])) # right
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lcd.custom_char(1, bytearray([0x18,0x18,0x18,0x18,0x18,0x18,0x18,0x18])) # left
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lcd.custom_char(2, bytearray([0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0x1F])) # 2-down
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lcd.custom_char(3, bytearray([0x1F,0x1F,0x00,0x00,0x00,0x00,0x00,0x00])) # 2-up
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lcd.custom_char(4, bytearray([0x1F,0x1F,0x00,0x00,0x00,0x00,0x00,0x1F])) # e-up
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lcd.custom_char(5, bytearray([0x1F,0x00,0x00,0x00,0x00,0x00,0x1F,0x1F])) # e-down
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lcd.custom_char(6, bytearray([0x18,0x18,0x18,0x18,0x18,0x18,0x1F,0x1F])) # l-down
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lcd.custom_char(7, bytearray([0x00,0x00,0x00,0x00,0x00,0x00,0x18,0x18])) # l-right
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line1 = str(chr(0) + chr(2) + chr(1) + chr(0) + chr(4) + " " + chr(1) + " " + chr(1) + " " + chr(0) + chr(3) + chr(1))
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line2 = str(chr(0) + chr(3) + chr(1) + chr(0) + chr(5) + " " + chr(6) + chr(7) + chr(6) + chr(7) + chr(0) + chr(2) + chr(1))
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def right2left(line1, line2, speed=0.3):
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padding = " " # 16 spaces
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line2 = padding + line2 + padding
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line1 = padding + line1 + padding
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for i in range(32):
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line2 = line2[1:]
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line1 = line1[1:]
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lcd.putstr(line1[0:16] + line2[0:16])
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time.sleep(speed)
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def top2bottom(line1, line2, speed=0.2):
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lcd.clear()
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time.sleep(speed)
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lcd.putstr(line2)
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time.sleep(speed)
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lcd.clear()
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lcd.putstr(line1)
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lcd.move_to(0,1)
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lcd.putstr(line2)
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time.sleep(speed)
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lcd.clear()
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lcd.move_to(0,1)
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lcd.putstr(line1)
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time.sleep(speed)
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lcd.clear()
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time.sleep(speed)
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def run(): # for the ProgramChooser as callback
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right2left(line1, line2, 0.1)
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top2bottom(line1, line2)
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if __name__ == "__main__":
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while True:
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right2left(line1, line2, 0.1)
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top2bottom(line1, line2)
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