First version of the SYSTEM module

system.py

@@ -1,4 +1,112 @@
 #
 # Petcard System - v1.0
 # Copyright (c) 2025 FreedTapestry21
-#
+#
+# Licensed under the MIT license
+#
+
+# Importing libraries
+import sys, time, machine, framebuf, ssd1306, _thread
+
+# Start Petcard frontend on core 1
+with open("petcard.py") as app:
+        _thread.start_new_thread(exec(app.read()), ())
+
+# Initialize global variables
+CONFIG = json.loads(open("config.json", "r").read())
+
+TEXT_HEIGHT = 8
+PADDING = 4
+
+# Initialize classes
+class Display:
+    def __init__(self, disp, x, y) -> None:
+        self.x = x
+        self.y = y
+        self.type = disp
+        self.pages = y // 8
+        self.buffer = framebuf.FrameBuffer(bytearray(self.pages * x), x, y, framebuf.MONO_VLSB)
+
+    def log(self, msg, IGN=False): # IGN => IGNore to report to console (Only log)
+        if CONFIG["debug"] == 1:
+            date = time.localtime()
+            stamp = str(date[0]) + "-" + str(date[1]) + "-" + str(date[2]) + " " + str(date[3]) + ":" + str(date[4]) + ":" + str(date[5])
+            if IGN == False:
+                text = "[" + stamp + "] " + msg
+                print(text)
+            else:
+                if msg == "":
+                    text = msg
+                else:
+                    text = "[" + stamp + "] " + msg
+            if CONFIG["logging"] == 1: # Write log to log file
+                with open(CONFIG["logfile"], "a") as file:
+                    file.write(text + '\n')
+                    file.close()
+    
+    def init(self):
+        if self.type == "SSD1306":
+            self.i2c = machine.I2C(0, sda=machine.Pin(4), scl=machine.Pin(5))
+            self.display = ssd1306.SSD1306_I2C(128, 64, self.i2c)
+        
+    def update(self):
+        self.display.blit(self.buffer, 0, 0)
+        self.display.show()
+
+class Controls:
+    def __init__(self):
+        pass
+    
+    def waitfor(self):
+        while True:
+            for x in CONFIG["controls"]:
+                if machine.Pin(int(CONFIG["controls"][x]), machine.Pin.IN, machine.Pin.PULL_DOWN).value() == 1:
+                    for y in CONFIG["controls"]:
+                        if CONFIG["controls"][y] == x:
+                            return y
+                else: pass
+
+class UI:
+    def __init__(self):
+        self.selection = -1
+    def menu(self, display, controls, entries):
+        if self.selection == -1:
+            self.selection = 0
+        while True:
+            inp = controls.waitfor()
+            if inp == "down":
+                self.selection = self.selection + 1
+            if inp == "up":
+                self.selection = self.selection - 1
+            if self.selection >= len(entries):
+                self.selection = 0
+            if self.selection < 0:
+                self.slection = len(entries)
+            print(str(self.selection))
+            display.buffer.fill(0)
+            display.buffer.fill_rect(0, int(self.selection*TEXT_HEIGHT) + int(self.selection*PADDING) + 2, display.x, 10, 1)
+            i = PADDING
+            q = 0
+            for x in entries:
+                if i < display.y:
+                    if q == self.selection:
+                        display.buffer.text(x, 0, i, 0)
+                    else:
+                        display.buffer.text(x, 0, i, 1)
+                    i = i + TEXT_HEIGHT + PADDING
+                    q = q + 1
+                else:
+                    pass
+            display.update()
+            time.sleep(0.2)
+                
+        display.update()
+        return display
+
+# Initialize functions
+
+def quit(msg=""):
+    if msg == '':
+        sys.exit()
+    else:
+        print("[" + NAME + "] " + msg)