temp: First version of adc readout

Misc/Temp-Monitor/firmware.py

@@ -0,0 +1,38 @@
+import time
+from machine import Pin
+
+clock = Pin(2)
+data = Pin(4)
+
+SLEEP_TIME = 1
+
+
+def read_adc():
+    # Wait for DRDY
+    while data.high():
+        pass
+
+    value = 0
+    for i in range(24):
+        clock.high()
+        time.sleep_us(SLEEP_TIME)
+
+        value |= data.value() << (23 - i)
+
+        clock.low()
+        time.sleep_us(SLEEP_TIME)
+
+    # Shift 3 more bits
+    for i in range(3):
+        clock.high()
+        time.sleep_us(SLEEP_TIME)
+        clock.low()
+        time.sleep_us(SLEEP_TIME)
+
+    return value
+
+
+while True:
+    value = float(read_adc()) / (2**24-1)
+    print(f"{value:f}")
+    time.sleep(0.1)