--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lameboy.py	Thu Feb 22 01:09:28 2018 +0100
@@ -0,0 +1,29 @@
+from machine import SPI, I2C, Pin
+import pcd8544
+
+
+class Backlight:
+    def __init__(self, i2c, address=0x0d):
+        self._i2c = i2c
+        self._address = address
+
+    def color(self, r, g, b):
+        data = bytearray((0x6e, r, g, b))
+        self._i2c.writeto(self._address, data)
+
+
+class Buttons:
+    def __init__(self, i2c, address=0x38):
+        self._i2c = i2c
+        self._address = address
+
+    def get_pressed(self):
+        return self._i2c.readfrom(self._address, 1)[0]
+
+
+i2c = I2C(-1, sda=Pin(4), scl=Pin(5))
+backlight = Backlight(i2c)
+buttons = Buttons(i2c)
+spi = SPI(1, baudrate=10000000)
+display = pcd8544.Display(spi, Pin(2, Pin.OUT), Pin(0, Pin.OUT),
+                          Pin(15, Pin.OUT))

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pcd8544.py	Thu Feb 22 01:09:28 2018 +0100
@@ -0,0 +1,60 @@
+import framebuf
+import time
+
+
+class Display:
+    width = 84
+    height = 48
+    _command = bytearray((0x40, 0x80))
+
+    def __init__(self, spi, dc, rst=None, cs=None):
+        self._spi = spi
+        self._cs = cs or (lambda x: x)
+        self._rst = rst or (lambda x: x)
+        self._dc = dc
+        self._fn = bytearray([0x20])
+        buffer = bytearray(504)
+        self.fb = framebuf.FrameBuffer(buffer, 84, 48, framebuf.MVLSB)
+        self._buffer = memoryview(buffer)
+
+        self.reset()
+        self.contrast()
+
+    def _write(self, data, command=True):
+        self._dc(not command)
+        self._cs(0)
+        self._spi.write(data)
+        self._cs(1)
+
+    def reset(self):
+        self._rst(0)
+        time.sleep_us(100)
+        self._rst(1)
+
+    def active(self, val):
+        if val:
+            self._fn[0] &= ~0x04
+        else:
+            self._fn[0] |= 0x04
+        self._write(self._fn)
+
+    def inverse(self, val):
+        self._write(b'\x0d' if val else b'\x0c')
+
+    def contrast(self, val=63, bias=20, temp=6):
+        if not (0 <= val <= 127 and 16 <= bias <= 23 and 4 <= temp <= 7):
+            raise ValueError()
+        for c in (self._fn[0] | 0x01, temp, bias, 0x80 | val, self._fn[0]):
+            self._write(bytes((c,)))
+
+    def update(self):
+        self._cs(0)
+        index = 0
+        for page in range(6):
+            self._command[0] = 0x40 | page
+            self._dc(0)
+            self._spi.write(self._command)
+            self._dc(1)
+            self._spi.write(self._buffer[index:index + 84])
+            index += self.width
+        self._cs(1)