Fixed light sensor script

esp32-lora/main.py

@@ -1,15 +1,13 @@
-from machine import Pin, ADC, I2C
 import time
-from ssd1306 import SSD1306_I2C
+from machine import Pin, ADC, I2C
+from screen import Screen
 
 # ----- ADC (Grove Light Sensor) -----
 light_adc = ADC(Pin(1))
 light_adc.atten(ADC.ATTN_11DB)      # 0–3.3V range
 light_adc.width(ADC.WIDTH_12BIT)    # 0–4095
 
-# ----- I2C (OLED) -----
+screen = Screen()
-i2c = I2C(0, scl=Pin(9), sda=Pin(8), freq=400000)
-oled = SSD1306_I2C(128, 64, i2c)
 
 def read_light(samples=8):
     total = 0
@@ -22,10 +20,8 @@ while True:
     raw = read_light()
     percent = int((raw / 4095) * 100)
 
-    oled.fill(0)
+    screen.display("Light Sensor", 15, 0)
-    oled.text("Light Sensor", 0, 0)
+    screen.display("Raw: {}".format(raw), 15, 20)
-    oled.text("Raw: {}".format(raw), 0, 20)
+    screen.display("Level: {}%".format(percent), 15, 40)
-    oled.text("Level: {}%".format(percent), 0, 40)
-    oled.show()
 
     time.sleep(0.5)

esp32-lora/screen.py

@@ -0,0 +1,36 @@
+from machine import Pin, SoftI2C
+from ssd1306 import SSD1306_I2C
+import time
+
+class Screen :
+
+    sda = None
+    scl = None
+    rst = None
+    oled = None
+
+    def __init__(self) :
+        self.sda = Pin(17)
+        self.scl = Pin(18)
+        self.rst = Pin(21, Pin.OUT)
+        self.oled =  SSD1306_I2C(
+            128,
+            64,
+            SoftI2C(scl=self.scl, sda=self.sda, freq=100000),
+            addr=0x3C
+        )
+        self.__prepare()
+
+    def reset(self):
+        self.oled.fill(0)
+        self.oled.show()
+
+    def display(self, message, col, row):
+        self.oled.text(message, col, row)
+        self.oled.show()
+
+    def __prepare(self):
+        self.rst.value(0)
+        time.sleep_ms(150)
+        self.rst.value(1)
+        time.sleep_ms(150)