#Recursive call dont work in Guizero_Auto_Update

[fjesbok64]

#Recursive call dont work in Guizero_Auto_Update

[fjesbok64]

from guizero import *

arduinoData=[]
for i in range (1,25):
arduinoData.append(i*2)
print("Array: ",arduinoData) #Works OK

def read_sensor():
for i in range (0,24):
return arduinoData[i] # PRINTS ONLY FIRST LOOPING
#exchanged from original: return random.randrange(3200, 5310, 10) / 100

def update_label():
text.value = read_sensor()

recursive call
text.after(1000, update_label)

if name == 'main':
app = App(title='Sensor Display!',
height=200,
width=600,
layout='grid')

title = Text(app, 'Sensor value:', grid=[1, 1], size="50", color="blue")
text = Text(app, "xx", grid=[2, 1], size="50", color="red")

text.after(1000, update_label)
app.display()

[martinohanlon]

The code is missing its indentation, could you update please.

I have edited the issues to format the code so its easier to read.

It isnt obvious to me what the program is trying to do.

Re this function:

def read_sensor():
    for i in range (0,24):
        return arduinoData[i] # PRINTS ONLY FIRST LOOPING

Regardless of how this function is called (via update, repeat, or call directly) it is only ever going to return the first value in the list. The for loop will start from 0 each time it is run.

This is not an issue with guizero so adding help wanted label.

[fjesbok64]

I see the counter i in def read_sensor() loop will be reset for every call.
So counter has to be outside the loop and then i could not make it work. Where in code should the retreaving of values from the arduinoData() be placed to increment ?

[bsimmo]

Feel free to pop to https://forums.raspberrypi.com/viewforum.php?f=32 especially if you are then going to interface and Arduino physically.

Although actually displaying code on the RPi forum is not as good as here.

Simple method.
Create a global counter variable for i
Increment that either in update_ or read_ as you see best
Reset when it reaches its limit after the read_

[fjesbok64]

Thanks bsimmo. I will try that. 👍

[martinohanlon]

Closing due to inactivity.