Added the actual program

ProgramChooser.py

@@ -0,0 +1,80 @@
+from machine import Pin, I2C
+from PCF8574 import I2C_LCD
+import time
+
+class ProgramChooser:
+    def __init__(self, programs: list, next_btn: int, ok_btn: int, debug=False, run_directly=False):
+        self.next_btn = Pin(next_btn, Pin.IN, Pin.PULL_DOWN)
+        self.ok_btn = Pin(ok_btn, Pin.IN, Pin.PULL_DOWN)
+        self._i2c = I2C(0, sda=Pin(0), scl=Pin(1), freq=400000)
+        self.lcd = I2C_LCD(self._i2c, 0x27, 2, 16)
+        self.lcd.custom_char(0, bytearray([0x00,0x00,0x00,0x00,0x00,0x00,0x15,0x00]))  # three dots in one, chr(0)
+       
+        self.lcd.move_to(0,0)
+        self.lcd.putstr("[ProgramChooser]<              >")
+        
+        self.current_selection = None  # no selection
+        self.programs = programs  # a dictionary of programs and it's callbacks e.g. {"lora_test": some_callback}
+        
+        self.show_selection()
+        
+        if run_directly: self.run()
+        
+    def log(self, msg, is_debug=False):
+        print(f"[ProgramChooser] {msg}")
+    
+    
+    def show_selection(self):
+        self.lcd.move_to(1,1)
+        
+        if len(self.programs) == 0:
+            self.lcd.putstr(" No programs!")
+            return True
+        if self.current_selection == None:  # set it initially
+            self.current_selection = 0
+        
+        # the actual displaying process
+        to_show = list(self.programs.keys())[self.current_selection]
+        if len(to_show) > 14:
+            to_show = to_show[:13] + chr(0)
+        else:
+            to_show = to_show[:14]
+        to_show = to_show.center(14)
+        self.lcd.putstr(to_show)
+        return True
+    
+    
+    def run(self):
+        while True:
+            if self.next_btn.value() == 1:
+                former_program_name = list(self.programs.keys())[self.current_selection]
+                self.current_selection = (self.current_selection+1)%len(list(self.programs.keys()))
+                self.show_selection()
+                now_program_name = list(self.programs.keys())[self.current_selection]
+                self.log(f"Selected next program (\"{former_program_name}\" -> \"{now_program_name}\")")
+                while self.next_btn.value() == 1: time.sleep(0.01)  # wait till release
+            if self.ok_btn.value() == 1:
+                program_name = list(self.programs.keys())[self.current_selection]
+                self.log(f"Running selected program! (\"{program_name}\")")
+                # shorten the name for displaying (if too long)
+                if len(program_name) > 14:
+                    program_name = program_name[:13] + chr(0)
+                else:
+                    program_name = program_name[:14]
+                program_name = program_name.center(14)
+                self.lcd.move_to(0,0)
+                self.lcd.putstr(f" {program_name}   Executing...  ")
+                self.execute_selection()
+                while self.ok_btn.value() == 1: time.sleep(0.01)  # wait till release (e.g. if the "program" is a simple send action)
+                self.lcd.putstr(f" {program_name}    Closing...   ")
+                time.sleep(1)
+                self.lcd.move_to(0,0)
+                self.lcd.putstr("[ProgramChooser]<              >")
+                self.show_selection()
+                
+            time.sleep(0.01)
+    
+    
+    def execute_selection(self):  # execute the current selected program's callback
+        self.programs[list(self.programs.keys())[self.current_selection]]()
+