Finished the menu demo

config.json

@@ -0,0 +1,13 @@
+{
+    "debug": 1,
+    "logging": 1,
+    "loglevel": 4,
+    "logfile": "petcard.log",
+    "display": "SSD1306",
+    "controls": {
+        "up": "0",
+        "down": "3",
+        "select": "1",
+        "back": "2"
+    }
+}

lib/ssd1306.py

@@ -0,0 +1,155 @@
+# MicroPython SSD1306 OLED driver, I2C and SPI interfaces
+
+from micropython import const
+import framebuf
+
+
+# register definitions
+SET_CONTRAST = const(0x81)
+SET_ENTIRE_ON = const(0xA4)
+SET_NORM_INV = const(0xA6)
+SET_DISP = const(0xAE)
+SET_MEM_ADDR = const(0x20)
+SET_COL_ADDR = const(0x21)
+SET_PAGE_ADDR = const(0x22)
+SET_DISP_START_LINE = const(0x40)
+SET_SEG_REMAP = const(0xA0)
+SET_MUX_RATIO = const(0xA8)
+SET_COM_OUT_DIR = const(0xC0)
+SET_DISP_OFFSET = const(0xD3)
+SET_COM_PIN_CFG = const(0xDA)
+SET_DISP_CLK_DIV = const(0xD5)
+SET_PRECHARGE = const(0xD9)
+SET_VCOM_DESEL = const(0xDB)
+SET_CHARGE_PUMP = const(0x8D)
+
+# Subclassing FrameBuffer provides support for graphics primitives
+# http://docs.micropython.org/en/latest/pyboard/library/framebuf.html
+class SSD1306(framebuf.FrameBuffer):
+    def __init__(self, width, height, external_vcc):
+        self.width = width
+        self.height = height
+        self.external_vcc = external_vcc
+        self.pages = self.height // 8
+        self.buffer = bytearray(self.pages * self.width)
+        super().__init__(self.buffer, self.width, self.height, framebuf.MONO_VLSB)
+        self.init_display()
+
+    def init_display(self):
+        for cmd in (
+            SET_DISP | 0x00,  # off
+            # address setting
+            SET_MEM_ADDR,
+            0x00,  # horizontal
+            # resolution and layout
+            SET_DISP_START_LINE | 0x00,
+            SET_SEG_REMAP | 0x01,  # column addr 127 mapped to SEG0
+            SET_MUX_RATIO,
+            self.height - 1,
+            SET_COM_OUT_DIR | 0x08,  # scan from COM[N] to COM0
+            SET_DISP_OFFSET,
+            0x00,
+            SET_COM_PIN_CFG,
+            0x02 if self.width > 2 * self.height else 0x12,
+            # timing and driving scheme
+            SET_DISP_CLK_DIV,
+            0x80,
+            SET_PRECHARGE,
+            0x22 if self.external_vcc else 0xF1,
+            SET_VCOM_DESEL,
+            0x30,  # 0.83*Vcc
+            # display
+            SET_CONTRAST,
+            0xFF,  # maximum
+            SET_ENTIRE_ON,  # output follows RAM contents
+            SET_NORM_INV,  # not inverted
+            # charge pump
+            SET_CHARGE_PUMP,
+            0x10 if self.external_vcc else 0x14,
+            SET_DISP | 0x01,
+        ):  # on
+            self.write_cmd(cmd)
+        self.fill(0)
+        self.show()
+
+    def poweroff(self):
+        self.write_cmd(SET_DISP | 0x00)
+
+    def poweron(self):
+        self.write_cmd(SET_DISP | 0x01)
+
+    def contrast(self, contrast):
+        self.write_cmd(SET_CONTRAST)
+        self.write_cmd(contrast)
+
+    def invert(self, invert):
+        self.write_cmd(SET_NORM_INV | (invert & 1))
+
+    def show(self):
+        x0 = 0
+        x1 = self.width - 1
+        if self.width == 64:
+            # displays with width of 64 pixels are shifted by 32
+            x0 += 32
+            x1 += 32
+        self.write_cmd(SET_COL_ADDR)
+        self.write_cmd(x0)
+        self.write_cmd(x1)
+        self.write_cmd(SET_PAGE_ADDR)
+        self.write_cmd(0)
+        self.write_cmd(self.pages - 1)
+        self.write_data(self.buffer)
+
+
+class SSD1306_I2C(SSD1306):
+    def __init__(self, width, height, i2c, addr=0x3C, external_vcc=False):
+        self.i2c = i2c
+        self.addr = addr
+        self.temp = bytearray(2)
+        self.write_list = [b"\x40", None]  # Co=0, D/C#=1
+        super().__init__(width, height, external_vcc)
+
+    def write_cmd(self, cmd):
+        self.temp[0] = 0x80  # Co=1, D/C#=0
+        self.temp[1] = cmd
+        self.i2c.writeto(self.addr, self.temp)
+
+    def write_data(self, buf):
+        self.write_list[1] = buf
+        self.i2c.writevto(self.addr, self.write_list)
+
+
+class SSD1306_SPI(SSD1306):
+    def __init__(self, width, height, spi, dc, res, cs, external_vcc=False):
+        self.rate = 10 * 1024 * 1024
+        dc.init(dc.OUT, value=0)
+        res.init(res.OUT, value=0)
+        cs.init(cs.OUT, value=1)
+        self.spi = spi
+        self.dc = dc
+        self.res = res
+        self.cs = cs
+        import time
+
+        self.res(1)
+        time.sleep_ms(1)
+        self.res(0)
+        time.sleep_ms(10)
+        self.res(1)
+        super().__init__(width, height, external_vcc)
+
+    def write_cmd(self, cmd):
+        self.spi.init(baudrate=self.rate, polarity=0, phase=0)
+        self.cs(1)
+        self.dc(0)
+        self.cs(0)
+        self.spi.write(bytearray([cmd]))
+        self.cs(1)
+
+    def write_data(self, buf):
+        self.spi.init(baudrate=self.rate, polarity=0, phase=0)
+        self.cs(1)
+        self.dc(1)
+        self.cs(0)
+        self.spi.write(buf)
+        self.cs(1)

main.py

@@ -2,70 +2,83 @@
 # Petcard Bootloader - v1.0
 # Copyright (c) 2025 FreedTapestry21
 #
+# Licensed under the MIT license
+#
+
+#
+# Importing libraries
+#
 
 from machine import Pin
-import network, urequest, machine
+import time
+
+#
+# Define global variables
+#
 
-# Define variables
 CONSOLE_WELCOME = """
 Petcard Bootloader - v1.0
 Copyright (c) 2025 FreedTapestry21
 
 Licensed under the MIT license
 """
-UPDATE = False
-MIRROR = "https://mirror.pixelated.sh/dev/petcard"
 
 # Initialize OK button (with pull down resistor)
-ok = Pin(0, Pin.IN, Pin.PULL_DOWN)
+ok = Pin(1, Pin.IN, Pin.PULL_DOWN)
 
-# Define functions
-def download(file, name):
-    print("Downloading " + name + "...")
-    f = open(file)
-    r = urequests.get(MIRROR + "/" + file)
-    f.write(r.text)
-    f.close()
-    r.close
-    print("Downloaded " + name + "!")
+#
+# Function(s)
+#
 
-def connect(ssid, psk):
-    nic = network.WLAN(network.WLAN.IF_STA)
-    nic.active(True)
-    nic.connect(ssid, psk)
-    while not sta_if.isconnected():
-        pass
-
-def boot():
-    import system
-    init()
-
-# Check if button is pressed for recovery/update process
-if __name__ == '__main__':
-    print(CONSOLE_WELCOME)
+def main():
+    # Check if a boot interuption was triggered (you can trigger this by holding down the OK button) and wait for 10 seconds
+    # In later revisions I'd like this to trigger some kind of update screen to easily update the Petcard
+    INTERUPT = False
     if ok.value() == 1:
-        UPDATE = True
+        INTERUPT = True
     
-    if UPDATE == True:
-        print("Petcard bootloader has been interupted by the OK button")
-        inp = input("Are you sure you want to enter the Petcard recovery process? (y/N)")
-        if inp == "" or inp == "n" or inp == "N":
-            print("Rebooting to resume boot process...")
-        if inp == "y" or inp == "Y":
-            print("Entering Petcard recovery process...")
-            print("Please enter your Wi-Fi credentials")
-            ssid = input("SSID: ")
-            psk = input("Password: ")
-            connect(ssid, psk)
-            print('Connected to network "' + str(ssid) + '"')
-            
-            # Downloading system.py
-            download("system.py", "Petcard system")
-            download("petcard.py", "Petcard")
-            print("System recovery complete, restarting system...")
-            machine.reset()
+    if INTERUPT == True: return 1
+    else: return 0
+
+#
+# Classes
+#
+
+class Instance:
+    def __init__(self):
+        self.config_manager = system.ConfigurationManager()
+        self.logger = system.Logger(self.config_manager.config)
+        self.input_controller = system.InputController(self.config_manager.config["controls"], self.logger)
+        
+        # Select display driver
+        if self.config_manager.config["display"] == "SSD1306":
+            self.display_driver = system.SSD1306Driver()
         else:
-            print("'" + inp + "' is not recognized as an option! Rebooting...")
-            machine.reset()
-    else:
-        boot()
+            self.logger.log(f"No available driver was found for display {self.config_manager.config['display']}!", 0)
+            self.display_driver = system.DisplayDriver() # DO NOT REMOVE
+        
+        self.display = system.Display(self.display_driver, 128, 64, self.logger)
+        self.ui = system.UserInterface(self.display, self.input_controller, self.logger)
+        self.power = system.Power(self.display, self.input_controller, self.logger)
+
+#
+# Entry point
+#
+
+if __name__ == '__main__':
+    if main() == 1:
+        time.sleep(10)
+        machine.soft_reset()
+    print(CONSOLE_WELCOME)
+    print("Importing SYSTEM module...")
+    import system
+    print("Importing APP module...")
+    import petcard
+    print("Starting Petcard")
+    instance = Instance()
+    app = petcard.Application(instance.config_manager, instance.logger, instance.display_driver, instance.display, instance.input_controller, instance.ui, instance.power)
+    app.run()
+
+#
+# End Of File (EOF)
+#

petcard.py

@@ -1,4 +1,79 @@
 #
 # Petcard - v1.0
 # Copyright (c) 2025 FreedTapestry21
+#
+# Licensed under the MIT license
+#
+
+#
+# Importing libraries
+#
+
+import sys, json, machine
+
+# Import SYSTEM module
+import system
+
+#
+# Classes
+#
+
+# Main system & application controller
+class Application:
+    def __init__(self, config_manager, logger, display_driver, display, input_controller, ui, power):
+        self.config_manager = config_manager
+        self.logger = logger
+        self.display_driver = display_driver
+        self.display = display
+        self.input_controller = input_controller
+        self.ui = ui
+        self.power = power
+    
+    # Initializes all system components
+    def initialize(self):
+        self.logger.log("Initializing Petcard System...", 3)
+        self.display.initialize()
+        self.logger.log("System initialization complete", 3)
+    
+    # Main system loop
+    def run(self):        
+        try:
+            self.initialize()
+            
+            # Create main menu
+            main_menu_items = [
+                system.MenuItem("Food", self._action, "f"),
+                system.MenuItem("Drinks", self._action, "d"),
+                system.MenuItem("Play", self._action, "p"),
+                system.MenuItem("Sleep", self.power.sleep)
+            ]
+            
+            main_menu = system.Menu(main_menu_items, self.logger)
+            
+            # Main menu loop
+            while True:
+                selected_item = self.ui.show_menu(main_menu)
+                if selected_item:
+                    result = selected_item.execute()
+                    if result == "exit":
+                        break
+                        
+        except Exception as e:
+            self.logger.log(f"System error: {e}", 0)
+            self.power.exit_system("System encountered an error")
+    
+    # Defines what to do when a certain action is triggered
+    def _action(self, act):
+        if act == "f":
+            self.logger.log("Food!", 3)
+        elif act == "d":
+            self.logger.log("Drink!", 3)
+        elif act == "p":
+            self.logger.log("Play!", 3)
+        else: self.logger.log(f"Invalid action {act}", 1)
+        
+        return
+    
+#
+# End Of File (EOF)
 #

system.py

@@ -1,4 +1,340 @@
 #
 # Petcard System - v1.0
 # Copyright (c) 2025 FreedTapestry21
+#
+# Licensed under the MIT license
+#
+
+#
+# Importing libraries
+#
+
+import sys
+import time
+import json
+import machine
+import framebuf
+import ssd1306
+import _thread
+
+#
+# Classes
+#
+
+# Manages system configuration
+class ConfigurationManager:
+    def __init__(self, config_file="config.json"):
+        self.config_file = config_file
+        self.config = self._load_config()
+    
+    # Load configuration from file
+    def _load_config(self):
+        try:
+            with open(self.config_file, "r") as file:
+                return json.loads(file.read())
+        except Exception as e:
+            print(f"Failed to load config: {e}")
+            return self._get_default_config()
+    
+    # Return default configuration
+    def _get_default_config(self):
+        return {
+            "debug": 1,
+            "logging": 1,
+            "loglevel": 3,
+            "logfile": "petcard.log",
+            "display": "SSD1306",
+            "controls": {
+                "up": "0",
+                "down": "3",
+                "select": "1",
+                "back": "2"
+            }
+        }
+
+# Handles logging functionality with timestamp formatting
+class Logger:
+    def __init__(self, config):
+        self.log_level = config.get("loglevel", 0) == 3
+        self.logging_enabled = config.get("logging", 0) == 1
+        self.log_file = config.get("logfile", "system.log")
+    
+    def log(self, message, log_level, ignore_console=False):
+        timestamp = self._get_timestamp()
+        
+        if log_level == 0:
+            formatted_message = f"[CRITICAL] [{timestamp}] {message}"
+        elif log_level == 1:
+            formatted_message = f"[ERROR] [{timestamp}] {message}"
+        elif log_level == 2:
+            formatted_message = f"[WARNING] [{timestamp}] {message}"
+        elif log_level == 3:
+            formatted_message = f"[INFO] [{timestamp}] {message}"
+        elif log_level == 4:
+            formatted_message = f"[DEBUG] [{timestamp}] {message}"
+        
+        if self.log_level <= log_level:
+            if not ignore_console:
+                print(formatted_message)
+
+            if self.logging_enabled:
+                self._write_to_file(formatted_message)
+    
+    def _get_timestamp(self):
+        # Generate formatted timestamp
+        date = time.localtime()
+        return f"{date[0]}-{date[1]}-{date[2]} {date[3]}:{date[4]}:{date[5]}"
+    
+    def _write_to_file(self, message):
+        # Write message to log file
+        try:
+            with open(self.log_file, "a") as file:
+                file.write(message + '\n')
+        except Exception as e:
+            print(f"Failed to write to log file: {e}")
+    
+    # Get configuration value
+    def get(self, key, default=None):
+        return self.config.get(key, default)
+
+# Handles input from buttons/controls
+class InputController:
+    def __init__(self, control_config, logger):
+        self.controls = control_config
+        self.logger = logger
+        self.pins = {}
+        self._initialize_pins()
+    
+    # Initialize pin objects for all controls
+    def _initialize_pins(self):
+        for control_name, pin_number in self.controls.items():
+            try:
+                self.pins[control_name] = machine.Pin(
+                    int(pin_number), 
+                    machine.Pin.IN, 
+                    machine.Pin.PULL_DOWN
+                )
+                if control_name == "select":
+                    self.pins["select"].irq(trigger=machine.Pin.IRQ_RISING, handler=lambda p:None)
+                    self.logger.log(f"Set interupt pin to {control_name}", 4)
+            except Exception as e:
+                self.logger.log(f"Failed to initialize pin for {control_name}: {e}", 1)
+    
+    # Wait for and return the first button press detected
+    def wait_for_input(self):
+        while True:
+            for control_name, pin in self.pins.items():
+                try:
+                    if pin.value() == 1:
+                        time.sleep(0.05)  # Debounce delay
+                        if pin.value() == 1:  # Confirm press
+                            return control_name
+                except Exception as e:
+                    self.logger.log(f"Error reading pin {control_name}: {e}", 1)
+            time.sleep(0.01)  # Small delay to prevent excessive polling
+
+# Base class for display drivers - implement all methods in subclasses
+class DisplayDriver:
+    def initialize(self):
+        raise NotImplementedError("DisplayDriver subclass must implement initialize()")
+    
+    def show(self):
+        raise NotImplementedError("DisplayDriver subclass must implement show()")
+    
+    def clear(self):
+        raise NotImplementedError("DisplayDriver subclass must implement clear()")
+    
+    def blit(self, buffer, x=0, y=0):
+        raise NotImplementedError("DisplayDriver subclass must implement blit()")
+
+# SSD1306 OLED display driver implementation
+class SSD1306Driver(DisplayDriver):
+    def __init__(self, width=128, height=64, sda_pin=4, scl_pin=5):
+        self.width = width
+        self.height = height
+        self.sda_pin = sda_pin
+        self.scl_pin = scl_pin
+        self.display = None
+        self.i2c = None
+    
+    # Initializes the SSD1306 display
+    def initialize(self):
+        self.i2c = machine.I2C(0, sda=machine.Pin(self.sda_pin), scl=machine.Pin(self.scl_pin))
+        self.display = ssd1306.SSD1306_I2C(self.width, self.height, self.i2c)
+    
+    # Updates the physical display
+    def show(self):
+        if self.display:
+            self.display.show()
+    
+    # Clears the display
+    def clear(self):
+        if self.display:
+            self.display.fill(0)
+    
+    # Blit buffer to display
+    def blit(self, buffer, x=0, y=0):
+        if self.display:
+            self.display.blit(buffer, x, y)
+
+
+# Main display controller with frame buffer management
+class Display:
+    def __init__(self, driver, width, height, logger):
+        self.width = width
+        self.height = height
+        self.driver = driver
+        self.logger = logger
+        self.pages = height // 8
+        self.buffer = framebuf.FrameBuffer(
+            bytearray(self.pages * width), 
+            width, 
+            height, 
+            framebuf.MONO_VLSB
+        )
+    
+    # Initializes the display driver
+    def initialize(self):
+        try:
+            self.driver.initialize()
+            self.logger.log("Display initialized successfully", 4)
+        except Exception as e:
+            self.logger.log(f"Display initialization failed: {e}", 0)
+    
+    # Update the physical display with buffer contents
+    def update(self):
+        try:
+            self.driver.blit(self.buffer, 0, 0)
+            self.driver.show()
+        except Exception as e:
+            self.logger.log(f"Display update failed: {e}", 1)
+    
+    # Clear the display buffer
+    def clear(self):
+        self.buffer.fill(0)
+    
+    # Draw text on the buffer
+    def draw_text(self, text, x, y, color=1):
+        self.buffer.text(text, x, y, color)
+    
+    # Draw filled rectangle on the buffer
+    def draw_filled_rect(self, x, y, width, height, color=1):
+        self.buffer.fill_rect(x, y, width, height, color)
+
+# Object for a single menu item, can be passed through to the Menu class
+class MenuItem:
+    def __init__(self, text, action=None, args=None):
+        self.text = text
+        self.action = action
+        self.args = args
+    
+    # Execute the menu item's action
+    def execute(self):
+        if callable(self.action) == True:
+            if self.args: return self.action(self.args)
+            else: return self.action()
+        return self.action
+
+# Menu system with navigation and rendering
+class Menu:
+    
+    TEXT_HEIGHT = 8
+    PADDING = 4
+    
+    def __init__(self, items, logger):
+        self.items = [item if isinstance(item, MenuItem) else MenuItem(str(item)) for item in items]
+        self.logger = logger
+        self.selection = 0
+    
+    # Handles menu navigation selection
+    def navigate(self, direction):
+        if direction == "up":
+            self.selection = (self.selection - 1) % len(self.items) # The percentage ensures the result wraps around within the valid range of the list
+        elif direction == "down":
+            self.selection = (self.selection + 1) % len(self.items)
+    
+    # Gets the currently selected menu item
+    def get_selected_item(self):
+        if 0 <= self.selection < len(self.items):
+            return self.items[self.selection]
+        return None
+    
+    def render(self, display):
+        # Render menu to display
+        display.clear()
+        
+        # Draw selection highlight
+        highlight_y = self.selection * (self.TEXT_HEIGHT + self.PADDING) + 2
+        display.draw_filled_rect(0, highlight_y, display.width, 10, 1)
+        
+        # Draw menu items
+        y_pos = self.PADDING
+        for i, item in enumerate(self.items):
+            if y_pos < display.height:
+                if i == self.selection: color = 0 # Normal color for non-selected item
+                else: color = 1  # Inverted color for selected item
+                display.draw_text(item.text, 0, y_pos, color)
+                y_pos += self.TEXT_HEIGHT + self.PADDING
+        
+        display.update()
+
+# Main UI controller managing menus and interactions
+class UserInterface:
+    def __init__(self, display, input_controller, logger):
+        self.display = display
+        self.input_controller = input_controller
+        self.logger = logger
+    
+    # Displays the menu and handles navigation until selection is made
+    def show_menu(self, menu):
+        menu.render(self.display)
+        
+        while True:
+            try:
+                user_input = self.input_controller.wait_for_input()
+                self.logger.log(f"Menu input received: {user_input}", 4)
+                
+                if user_input in ["up", "down"]:
+                    menu.navigate(user_input)
+                    menu.render(self.display)
+                elif user_input == "select":
+                    selected_item = menu.get_selected_item()
+                    if selected_item:
+                        return selected_item
+                elif user_input == "back":
+                    return None
+                
+                time.sleep(0.2)  # Prevent input spam
+                
+            except Exception as e:
+                self.logger.log(f"Error in menu navigation: {e}", 1)
+
+# Handles power management
+class Power:
+    def __init__(self, display, input_controller, logger):
+        self.display = display
+        self.input_controller = input_controller
+        self.logger = logger
+    
+    def sleep(self):
+        self.logger.log("Entering sleep mode", 3)
+        self.logger.log("Turning off display", 4)
+        self.display.clear()
+        self.display.update()
+        self.logger.log("Waiting for select to be pressed...", 4)
+        while True:
+            if self.input_controller.wait_for_input() == "select":
+                break
+        self.logger.log("Returning from sleep mode", 4)
+        return
+    
+    def exit_system(self, message=""):
+        # Exit the system with optional message
+        if message:
+            self.logger.log(message, 3)
+        self.logger.log("System shutting down...", 3)
+        machine.deepsleep()
+
+#
+# End Of File (EOF)
 #