What is the extension board button right id?

[ColombianAus]

Hello There,

I am trying to use the button from the Extension board, so I have written the following code:

#Pin.IN/Pin.OUT using RGB LED

Autor: XXXXX

from machine import Pin
import pycom
pycom.heartbeat(False)

#Inputs Pins
pin_i1 = Pin('G17', mode=Pin.IN, value=None)
#Output Pins

while (True):
#Review pin_i1
if pin_i1.value() != 1:
pycom.rgbled(0x007f00) # green
else:
pycom.rgbled((0x7f0000) # red

it is not working, does not do anything. Can anyone confirm if I have addressed the right pin in the extension boar (G17)?

if I measure voltage between GND and G10, its 3.3V, and it does not matter if I press button on/off, 3.3V value still there.

Cheers
Colombian1976

[RobTuDelft]

The user button on the expansion board is indeed P10 - G17.

Are you trying to set a value for an input pin (value=None)?

With ````you can make a code block:

from machine import Pin
import pycom
pycom.heartbeat(False)

#Inputs Pins
pin_i1 = Pin('G17', mode=Pin.IN, value=None)
#Output Pins

while (True):
    #Review pin_i1
    if pin_i1.value() != 1:
       pycom.rgbled(0x007f00) # green
    else:
       pycom.rgbled((0x7f0000) # red

[ColombianAus]

@RobTuDelft

hey Rob,

Thank you for your reply mate.

yes, I am trying to set use expansion board button to activate RGB LED. ..I did try to set up value to PIN.PULL_UP, but no change...and as I mentioned on my initial post, how weird that I measure voltage from P10 to GND and it is 3.3V all the time, no matter if the button is press or not.

Great suggestion about the code block, trying to find a suitable coding standard....:-)

Cheers
Colombian

[ColombianAus]

@RobTuDelft

Hello Rob,

I think that I have made some progress :-). now I have following program

from machine import Pin
import pycom
pycom.heartbeat(False)

#Inputs Pins
pin_i1 = Pin('GP1', mode=Pin.IN, value=PULL_UP)
#Output Pins

while (True):
	#Revisar pin_i1 
	if pin_i1.value() != 1:
 		pycom.rgbled(0x007f00) # green
	else:
		pycom.rgbled((0x7f0000) # red

so...I have changed from my input pin to G1, (P0) in the board. AND connected a cable from G17 to G1. I still don't see my program working but...I'll get there :-)

Cheers
Colombian

[RobTuDelft]

@ColombianAus

Glad you are making progress!
To help you a little bit, this example should probably work for you (didn't test it):

import time
from machine import Pin
import os
import machine
import pycom


uart = machine.UART(0, 115200)
os.dupterm(uart)

pycom.heartbeat(False)


def toggle_rgbled(arg):
    pycom.rgbled(0xff)
    time.sleep(2)
    pycom.rgbled(0)
    

button = Pin('P10', mode=Pin.IN, pull=Pin.PULL_UP)
button.callback(Pin.IRQ_RISING, toggle_rgbled)

[ColombianAus]

@RobTuDelft

Hey

Thank you very much for your assistance, your code works like a charm. I guess (and please correct me if I am wrong), the way you deal with Inputs in WiPy will be with interrupts? and not the way I was doing it..

Cheers
Colombian

[RobTuDelft]

@ColombianAus With callbacks you are assured that you always capture the event. I think that is the main advantage. Up to 16 events can be queued this way. Using a loop is also possible of course, but then it might interfere with other processes.

[ColombianAus]

@RobTuDelft ok fair enough. so Following code should work right?

import time
from machine import Pin
import machine
import pycom

pycom.heartbeat(False)

def toggle_rgbled_blue(arg):
pycom.rgbled(0xff)
time.sleep(2)
pycom.rgbled(0)

def toggle_rbgled_red(arg):
pycom.rgbled(0x7f0000)
time.sleep(2)
pycom.rgbled(0)

button_blue = Pin('P10', mode=Pin.IN, pull=Pin.PULL_UP)
button_blue.callback(Pin.IRQ_RISING, toggle_rgbled_blue)

buton_red = Pin('P0', mode=Pin.IN, pull=Pin.PULL_UP)
button_red.callback(Pin.IRQ_RISING, toggle_rgbled_red)

Cheers
Colombian