Raspberry Pi 4 buster 2 bullseye SSD1306 Could not determine platform

Raspberry Pi 4 のOS bullseye(11)に上げたら、やっぱり問題でましたね。

root@raspi4:~# cat /etc/os-release

PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"

root@raspi4:~# pip3 list

Package          Version

---------------- -------

Adafruit-BBIO    1.2.0

Adafruit-GPIO    1.0.4

Adafruit-PureIO  1.1.5

Adafruit-SSD1306 1.6.2

root@raspi4:~# ps axg|grep python

  535 ?        S      0:00 python3 /home/pi/bin/led0-G22-p3.py

  536 ?        S      0:00 python3 /home/pi/bin/stats2-p3.py

  867 ?        Ssl    0:01 /usr/bin/python3 /root/fanshim-python/examples/automatic.py --on-threshold 50 --off-threshold 45 --low-temp 45 --high-temp 50 --delay 2 --brightness 255

[bullseye に変更]

/etc/apt/sources.list をbuster を bullseye に変更

#apt update

#apt full-upgrade

再起動

root@raspi4:~# ps axg|grep python

  549 ?        S      0:00 python3 /home/pi/bin/led0-G22-p3.py

python3 /home/pi/bin/stats2-p3.py　が居ない!!!!

起動すると以下pkg無しのエラーとなる。

Python3の　ver.upで色々不足かな

# pip3 install Adafruit_GPIO

# pip3 install Adafruit_SSD1306

# pip3 install pillow

で、起動してみると

# ./stats2-p3.py

Traceback (most recent call last):

  File "/home/pi/bin/./stats2-p3.py", line 41, in <module>

    disp = Adafruit_SSD1306.SSD1306_128_64(rst=RST, i2c_address=0x3C)

  File "/usr/local/lib/python3.9/dist-packages/Adafruit_SSD1306/SSD1306.py", line 242, in __init__

    super(SSD1306_128_64, self).__init__(128, 64, rst, dc, sclk, din, cs,

  File "/usr/local/lib/python3.9/dist-packages/Adafruit_SSD1306/SSD1306.py", line 85, in __init__

    self._gpio = GPIO.get_platform_gpio()

  File "/usr/local/lib/python3.9/dist-packages/Adafruit_GPIO/GPIO.py", line 426, in get_platform_gpio

    raise RuntimeError('Could not determine platform.')

RuntimeError: Could not determine platform.

　　　　

1.0.3/1.0.4 のPlatform.py　だと　rpi4が対象外になりますな。

rpi4は、Hardware  : BCM2711　ですね。

def pi_version():

    """Detect the version of the Raspberry Pi.  Returns either 1, 2 or

    None depending on if it's a Raspberry Pi 1 (model A, B, A+, B+),

    Raspberry Pi 2 (model B+), or not a Raspberry Pi.

    """

    # Check /proc/cpuinfo for the Hardware field value.

    # 2708 is pi 1

    # 2709 is pi 2

    # 2835 is pi 3 on 4.9.x kernel

    # Anything else is not a pi.

    with open('/proc/cpuinfo', 'r') as infile:

        cpuinfo = infile.read()

    # Match a line like 'Hardware   : BCM2709'

    match = re.search('^Hardware\s+:\s+(\w+)$', cpuinfo,

                      flags=re.MULTILINE | re.IGNORECASE)

    if not match:

        # Couldn't find the hardware, assume it isn't a pi.

        return None

    if match.group(1) == 'BCM2708':

        # Pi 1

        return 1

    elif match.group(1) == 'BCM2709':

        # Pi 2

        return 2

    elif match.group(1) == 'BCM2835':

        # Pi 3 / Pi on 4.9.x kernel

        return 3

    else:

        # Something else, not a pi.

        return 

OS updateする前のBuster(10)でもコードは同じだったみたいですがね。

まぁ。

circuitpython　に変えましょう。。。。

#pip3 install adafruit-circuitpython-ssd1306

依存pkgも入れる。(省略)

# pip3 list

Package                                  Version

---------------------------------------- ---------

Adafruit-Blinka                          8.9.0

adafruit-circuitpython-busdevice         5.2.3

adafruit-circuitpython-displayio-ssd1306 1.5.11

adafruit-circuitpython-framebuf          1.4.14

adafruit-circuitpython-requests          1.12.11

adafruit-circuitpython-ssd1306           2.12.12

adafruit-circuitpython-typing            1.8.3

とりあえず、動きました。

[sample acript]

#!/usr/bin/env python3

import time

import subprocess

from board import SCL, SDA

import busio

from PIL import Image, ImageDraw, ImageFont

import adafruit_ssd1306

i2c = busio.I2C(SCL, SDA)

disp = adafruit_ssd1306.SSD1306_I2C(128, 64, i2c)

disp.fill(0)

disp.show()

width = disp.width

height = disp.height

image = Image.new("1", (width, height))

draw = ImageDraw.Draw(image)

draw.rectangle((0, 0, width, height), outline=0, fill=0)

padding = -2

top = padding

bottom = height - padding

x = 0

font = ImageFont.load_default()

while True:

    draw.rectangle((0, 0, width, height), outline=0, fill=0)

    cmd = "hostname -I | cut -d' ' -f1"

    IP = subprocess.check_output(cmd, shell=True).decode("utf-8")

    cmd = 'cut -f 1 -d " " /proc/loadavg'

    CPU = subprocess.check_output(cmd, shell=True).decode("utf-8")

    cmd = "free -m | awk 'NR==2{printf \"Mem: %s/%s MB  %.2f%%\", $3,$2,$3*100/$2 }'"

    MemUsage = subprocess.check_output(cmd, shell=True).decode("utf-8")

    cmd = 'df -h | awk \'$NF=="/"{printf "Disk: %d/%d GB  %s", $3,$2,$5}\''

    Disk = subprocess.check_output(cmd, shell=True).decode("utf-8")

    cmd = "uptime -p"

    Uptime = subprocess.check_output(cmd, shell = True )

    cmd = "vcgencmd measure_temp"

    CPU_TEMP = subprocess.check_output(cmd, shell = True )

    cmd = " iwconfig wlan0|head -1 |cut -f 2 -d \':\'"

    ESSID = subprocess.check_output(cmd, shell = True )

    cmd = "cpufreq-info -f -m"

    CPU_FREQ = subprocess.check_output(cmd, shell = True )

    draw.text((x, top + 0), "IP: " + IP, font=font, fill=255)

    draw.text((x, top + 8), "CPU load: " + CPU, font=font, fill=255)

    draw.text((x, top + 16), MemUsage, font=font, fill=255)

    draw.text((x, top + 25), Disk, font=font, fill=255)

    draw.text((x, top+34),    str(Uptime.decode('utf-8')),  font=font, fill=255)

    draw.text((x, top+43),    "CPU " + str(CPU_TEMP.decode('utf-8')),  font=font, fill=255)

    draw.text((x, top+52),    "CPU frq=" + str(CPU_FREQ.decode('utf-8')),  font=font, fill=255)

    # Display image.

    disp.image(image)

    disp.show()

    time.sleep(0.1)