Prevent REPL from freezing

esp32-lora/main.py

@@ -1,11 +1,11 @@
 import time
+import _thread
 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
+light_adc.atten(ADC.ATTN_11DB)
+light_adc.width(ADC.WIDTH_12BIT)
 
 screen = Screen()
 
@@ -16,12 +16,18 @@ def read_light(samples=8):
         time.sleep_ms(5)
     return total // samples
 
-while True:
-    raw = read_light()
-    percent = int((raw / 4095) * 100)
+def sensor_task():
+    while True:
+        raw = read_light()
+        percent = int((raw / 4095) * 100)
 
-    screen.display("Light Sensor", 15, 0)
-    screen.display("Raw: {}".format(raw), 15, 20)
-    screen.display("Level: {}%".format(percent), 15, 40)
+        screen.clear()
+        screen.display("Light Sensor", 15, 0)
+        screen.display("Raw: {}".format(raw), 15, 20)
+        screen.display("Level: {}%".format(percent), 15, 40)
 
-    time.sleep(0.5)
+        time.sleep(1)
+
+_thread.start_new_thread(sensor_task, ())
+
+print("Main thread running")