Using I2C,SPI,uart in python

#1

hello is there a way to control gpio using python script?
some sort of module?

#2

here is a python script that watches a GPIO pin to control a headphone jack. This script uses pinctrl instead of gpio

import os
import time

def init_gpio():
    os.popen("pinctrl set 11 op")
    os.popen("pinctrl set 10 ip pn")

def check_3_5():
    tmp = os.popen("pinctrl 10").readline().strip("\n")
    return tmp


def enable_speaker_gpio():
    os.popen("pinctrl set 11 op dh")

def disable_speaker_gpio():
    os.popen("pinctrl set 11 op dl")

init_gpio()

while True:
    tmp =  check_3_5()
    if tmp == "10: ip    pn | lo // GPIO10 = input":
        enable_speaker_gpio()
    elif tmp == "10: ip    pn | hi // GPIO10 = input":
        disable_speaker_gpio()
    
    time.sleep(1)
#3

Thank you so much.

1 Like
#4

You can also try python library periphery.

#5

much better for me :smile:

#6

just trying to work with I2C example so i need to know where is located I2C controller?

from periphery import I2C

# Open i2c-0 controller
i2c = I2C("/dev/i2c0")

# Read byte at address 0x100 of EEPROM at 0x50
msgs = [I2C.Message([0x01, 0x00]), I2C.Message([0x00], read=True)]
i2c.transfer(0x50, msgs)
print("0x100: 0x{:02x}".format(msgs[1].data[0]))

i2c.close()

can you help?
just for the info im trying to hook up the ROCK with I2C lcd display.

#7

You can refer to this example.
By the way, you need to make sure that you have enabled i2c-0 first if you use i2c-0.