92 lines
4.1 KiB
Python
92 lines
4.1 KiB
Python
"""
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ProgramChooser - a program launcher for microPython
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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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from machine import Pin, I2C
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from PCF8574T import I2C_LCD
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import time
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class ProgramChooser:
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def __init__(self, programs: list, next_btn: int, ok_btn: int, debug=False, run_directly=False):
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self.next_btn = Pin(next_btn, Pin.IN, Pin.PULL_DOWN)
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self.ok_btn = Pin(ok_btn, Pin.IN, Pin.PULL_DOWN)
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self._i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000)
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self.lcd = I2C_LCD(self._i2c, 0x27, 2, 16)
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self.lcd.custom_char(0, bytearray([0x00,0x00,0x00,0x00,0x00,0x00,0x15,0x00])) # three dots in one, chr(0)
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self.lcd.move_to(0,0)
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self.lcd.putstr("[ProgramChooser]< >")
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self.current_selection = None # no selection
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self.programs = programs # a dictionary of programs and it's callbacks e.g. {"lora_test": some_callback}
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self.show_selection()
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if run_directly: self.run()
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def log(self, msg, is_debug=False):
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print(f"[ProgramChooser] {msg}")
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def show_selection(self):
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self.lcd.move_to(1,1)
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if len(self.programs) == 0:
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self.lcd.putstr(" No programs!")
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return True
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if self.current_selection == None: # set it initially
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self.current_selection = 0
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# the actual displaying process
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to_show = list(self.programs.keys())[self.current_selection]
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if len(to_show) > 14:
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to_show = to_show[:13] + chr(0)
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else:
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to_show = to_show[:14]
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to_show = to_show.center(14)
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self.lcd.putstr(to_show)
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return True
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def run(self):
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while True:
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if self.next_btn.value() == 1:
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former_program_name = list(self.programs.keys())[self.current_selection]
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self.current_selection = (self.current_selection+1)%len(list(self.programs.keys()))
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self.show_selection()
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now_program_name = list(self.programs.keys())[self.current_selection]
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self.log(f"Selected next program (\"{former_program_name}\" -> \"{now_program_name}\")")
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while self.next_btn.value() == 1: time.sleep(0.01) # wait till release
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if self.ok_btn.value() == 1:
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program_name = list(self.programs.keys())[self.current_selection]
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self.log(f"Running selected program! (\"{program_name}\")")
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# shorten the name for displaying (if too long)
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if len(program_name) > 14:
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program_name = program_name[:13] + chr(0)
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else:
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program_name = program_name[:14]
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program_name = program_name.center(14)
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self.lcd.move_to(0,0)
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self.lcd.putstr(f" {program_name} Executing... ")
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self.execute_selection()
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while self.ok_btn.value() == 1: time.sleep(0.01) # wait till release (e.g. if the "program" is a simple send action)
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self.lcd.putstr(f" {program_name} Closing... ")
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time.sleep(1)
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self.lcd.move_to(0,0)
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self.lcd.putstr("[ProgramChooser]< >")
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self.show_selection()
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time.sleep(0.01)
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def execute_selection(self): # execute the current selected program's callback
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self.programs[list(self.programs.keys())[self.current_selection]]()
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