commit 1

display.py

@@ -0,0 +1,53 @@
+from machine import I2C, Pin
+import ssd1306
+import framebuf
+
+class OLED:
+    def __init__(self):
+        i2c = I2C(1, scl=Pin(3), sda=Pin(2), freq=400_000)
+
+        self.width  = 128
+        self.height = 64
+
+        # Real OLED
+        self.oled = ssd1306.SSD1306_I2C(self.width, self.height, i2c)
+
+        # Off-screen buffer (normal orientation)
+        self.buf = bytearray(self.width * self.height // 8)
+        self.fb = framebuf.FrameBuffer(self.buf, self.width, self.height, framebuf.MONO_VLSB)
+
+    # --------------------------------------------------
+    # Rotate framebuffer 180°
+    # --------------------------------------------------
+    def rotate_180(self):
+        self.oled.fill(0)
+
+        for y in range(self.height):
+            for x in range(self.width):
+                if self.fb.pixel(x, y):
+                    self.oled.pixel(
+                        self.width - 1 - x,
+                        self.height - 1 - y,
+                        1
+                    )
+
+    # --------------------------------------------------
+    # Display content
+    # --------------------------------------------------
+    def show(self, rtc, pressure, percent, cpu_temp, rssi_percent, depth_mm):
+        dt = rtc.datetime()
+        ctime = f"{dt[4]:02}:{dt[5]:02}:{dt[6]:02}"
+
+        # Draw NORMAL orientation into framebuffer
+        self.fb.fill(0)
+
+        self.fb.text(ctime, 30, 0)
+        self.fb.text(f"P: {pressure:.2f} kPa", 0, 10)
+        self.fb.text(f"D: {depth_mm:.0f} mm", 0, 20)
+        self.fb.text(f"L: {percent:.2f} %", 0, 30)
+        self.fb.text(f"CPU: {cpu_temp:.1f} C", 0, 40)
+        self.fb.text(f"WiFi: {rssi_percent}%", 0, 50)
+
+        # Rotate and display
+        self.rotate_180()
+        self.oled.show()