Add helper to have a print loop

Makefile

@@ -3,6 +3,7 @@ DEVICE := /dev/ttyUSB3
 copy:
 	ampy --port $(DEVICE) put src/pinouts.py
 	ampy --port $(DEVICE) put src/csms12.py
+	ampy --port $(DEVICE) put src/main.py
 
 connect:
 	picocom $(DEVICE) -b115200

src/main.py

@@ -0,0 +1,8 @@
+import time
+from csms12 import CSMS12
+
+def printloop():
+    csms12 = CSMS12()
+    while True:
+        print(csms12.getInterval())
+        time.sleep_ms(500)