[Python] Program stops running when executed as a function [closed]

I run a piece of coding to read a MCP3008. When running normally"" it runs forever. The same program running as a function locks up after a few seconds. There is no error message of any sort. When i halt the program and run it again the same happens.

I used Thonny to write and run the program but Geany give sthe same result. I have tried just about every form of elimination to determine the cause but after a day i give up and ask your help. The only difference that yield a result is running it strait forward (OK) or as a Function (NOK).

This is the coding without use of a Function.


from gpiozero import MCP3008
from time import sleep

while True:
channel = 0
device = 0


#def meetmcp(channel,device):
tmp = MCP3008(channel,device) #Maakt object tmp, setup voor MCP3008
waarde = (tmp.value * 3.3-0.5)*100 #geeft spanning uit MCP maal 10
print (str(round(waarde,1)))
sleep(0.2)
# return waarde

while True:
meetmcp(0,0)

#print (waarde)




And this is using it as a Function. It goes throuhg the second While True loop for about 30 times and then halts.


from gpiozero import MCP3008
from time import sleep

#while True:
# channel = 0
# device = 0


def meetmcp(channel,device):
tmp = MCP3008(channel,device) #Maakt object tmp, setup voor MCP3008
waarde = (tmp.value * 3.3-0.5)*100 #geeft spanning uit MCP maal 10
print (str(round(waarde,1)))
sleep(0.2)
# return waarde

while True:
meetmcp(0,0)

#print (waarde)



If i have made incorrect use here pls. forgive and correct me. This is a first for me.

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