CODEWITHSUNDEEP
pythonadafruit
Pedrojdi
Pedrojdi

Reputation: 17

Adafruit with rockpi 4

I would need help from colleagues. I have an Adafruit OLED library installed on raspberrypi working perfectly. I installed it on a rockpi 4, it installs perfectly, but when I run the program, it gives an error as shown below

error:

Traceback (most recent call last): File "test.py", line 7, in i2c = busio.I2C(7, board.SDA, board.SCL) File "/usr/local/lib/python3.8/dist-packages/busio.py", line 35, in init self.init(scl, sda, frequency) File "/usr/local/lib/python3.8/dist-packages/busio.py", line 123, in init raise ValueError( ValueError: No Hardware I2C on (scl,sda)=(7, <adafruit_blinka.microcontroller.generic_linux.sysfs_pin.Pin object at 0x7f851cdcd0>) Valid I2C ports: ((0, <adafruit_blinka.microcontroller.generic_linux.sysfs_pin.Pin object at 0x7f851cdd60>, <adafruit_blinka.microcontroller.generic_linux.sysfs_pin.Pin object at 0x7f851cdcd0>), (1, <adafruit_blinka.microcontroller.generic_linux.sysfs_pin.Pin object at 0x7f851cdf10>, <adafruit_blinka.microcontroller.generic_linux.sysfs_pin.Pin object at 0x7f851cdeb0>), (7, <adafruit_blinka.microcontroller.generic_linux.sysfs_pin.Pin object at 0x7f851cde50>, <adafruit_blinka.microcontroller.generic_linux.sysfs_pin.Pin object at 0x7f851cddc0>))

Code:

import mraa
import time

import board
import busio

i2c = busio.I2C(7, board.SDA, board.SCL)

import adafruit_ssd1306
oled = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c)

# initialise gpio 23
gpio_1 = mraa.Gpio(37)

# initialise gpio 24
gpio_2 = mraa.Gpio(24)

# set gpio 23 to output
gpio_1.dir(mraa.DIR_OUT)

# set gpio 24 to output
gpio_2.dir(mraa.DIR_OUT)

# toggle both gpio's
while True:
    gpio_1.write(1)
    gpio_2.write(0)

    time.sleep(1)

    gpio_1.write(0)
    gpio_2.write(1)

    time.sleep(1)

Installed:

apt-get install -y rockpi4-dtbo

apt-get install libmraa

apt-get install python3-pip

apt-get install python3-pil

apt-get install python3-numpy

pip3 install adafruit-circuitpython-ssd1306

testing rockpi 4 commands linux

mraa-i2c detect 0

00: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

20: -- -- -- -- ---- -- -- -- -- -- -- -- -- -- --

30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --

40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

70: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

found oled display 0x3c

enabled and turned on i2c display on rockpi 4 i2c7

Upvotes: 0

Views: 710

Answers (1)

Gerrikoio
Gerrikoio

Reputation: 1

As it's not listed in your installed list, I believe you will need this python library too - it's also required for busio:

https://github.com/adafruit/Adafruit_Blinka

You should install this library using PyPi, as instructed here: https://github.com/adafruit/Adafruit_Blinka#installing-from-pypi

Upvotes: 0

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