make single converion per function call

peaktech.py

@@ -19,14 +19,10 @@ def crap_to_number(crap):
                 0xeb:"0"
                 }
         number_str+=switch.get(elem, "-")
-    print(number_str)
+    return number_str
 
 
-def read_peaktech( port ):
-    try:
-        with Serial( port , 2400) as ser:
-            print(ser.name)
-            while True:
+def read_peaktech( ser ):
                 line = ser.read_until( b'\xf1' )
                 #print(binascii.hexlify(line))
 
@@ -50,7 +46,6 @@ def read_peaktech( port ):
                     num3 = (bytearr[5]<<4) | bytearr[6]
                     num4 = (bytearr[7]<<4) | bytearr[8]
 
-                    crap_to_number([num1, num2, num3, num4])
 
                     if line[0:2] == b'\x1C\x20':
                         print("Ohm")
@@ -65,6 +60,7 @@ def read_peaktech( port ):
                     if line[0:2] == b'\x18\x2e':
                         print("Temp")
 
+                    return crap_to_number([num1, num2, num3, num4])
                 #if (len(line) == 14) and (line[5] == 0x20):
                 #    try:
                 #        value = float( line[0:5].decode("ascii") )
@@ -111,10 +107,6 @@ def read_peaktech( port ):
                 #        unit = ""
 
                 #    print( f"{value}{prefix}{unit}" )
-    except KeyboardInterrupt:
-        pass
-    except Exception as ex:
-        print( "Exception:", ex )
 
 if __name__  == "__main__":
     port = "/dev/ttyUSB0"
@@ -122,4 +114,14 @@ if __name__  == "__main__":
     if len(sys.argv) > 1:
         port = sys.argv[1]
 
-    read_peaktech( port )
+    try:
+        with Serial( port , 2400) as ser:
+            print(ser.name)
+            while True:
+                print(read_peaktech(ser))
+
+    except KeyboardInterrupt:
+        pass
+    except Exception as ex:
+        print( "Exception:", ex )
+