python ：Linker_Button

Posted by: admin , March 10, 2014

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Linker button is the key, the SIG(signal output port) of linker button is at a low level(logic0)in case no button

pressed, after the button press, SIG will output a high level (logic 1). And pcduino GPIO through testing

linker button SIG level to determine key state.

In this post, we will demo how to control the linker led through linker button.[/vc_column_text][vc_tour][vc_tab title=”Part list” tab_id=”1394434978-1-72″][vc_column_text]1. pcDuino V2 x1

2. Linker Button x1

3. Linker LED x1

4. Linker Base x1

5. Linker cable x2[/vc_column_text][/vc_tab][vc_tab title=”Wiring Diagram” tab_id=”1394434978-2-47″][vc_column_text][/vc_column_text][/vc_tab][vc_tab title=”Test code” tab_id=”1394493515172-2-5″][vc_column_text]

import gpio
from time import sleep

led_pin = "gpio2"
button_pin = "gpio3"

def delay(ms):
    sleep(1.0*ms/1000)

def setup():
        gpio.pinMode(led_pin, gpio.OUTPUT)
        gpio.pinMode(button_pin, gpio.INPUT)
        print " Linker LED Pin : D2 n Linker Button Pin : D3"

def loop():
        while(1):
                if(gpio.digitalRead(button_pin)):
                        gpio.digitalWrite(led_pin, gpio.HIGH)
                else :
                        gpio.digitalWrite(led_pin, gpio.LOW)

setup()
loop()

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