Error when setting up the OLED screen Helios4

[jairunet]

Hello all I followed the instructions on the README.md document here in github, everything installed on the correct places but when starting the setup of the oled screen I am getting the following error:

$ sudo sys-oled --display ssd1306
Traceback (most recent call last):
File "/usr/local/bin/sys-oled", line 142, in
main()
File "/usr/local/bin/sys-oled", line 132, in main
display_info(device)
File "/usr/local/bin/sys-oled", line 105, in display_info
draw.text((0, 0), cpu_usage(), font=font, fill="white")
File "/usr/local/bin/sys-oled", line 78, in cpu_usage
temp = psutil.sensors_temperatures()['f10e4078.thermal']
KeyError: 'f10e4078.thermal'

Any suggestions will be really appreciated.

Sincerely,

[pmontrasio]

The return value of psutil.sensors_temperatures() doesn't have f10e4078.thermal as a key on your machine. It depends on your device, maybe on the kernel or distro. Check what you have with

$ python3
import psutil
print(psutil.sensors_temperatures())

For example I have cpu_thermal and soc_thermal on two different machines.

Once you have found the right key, edit directly /usr/local/bin/sys-oled, then sudo systemctl restart sys-oled.service and you'll be ready to go.

[jairunet]

I ended up with this:

`#!/usr/bin/env python3

import signal
import os
import sys
import time
import psutil
import configparser
from datetime import datetime
from luma.core import cmdline, error
from luma.core.render import canvas
from PIL import Image, ImageDraw, ImageFont

Load presets

contrast = 255
refresh = 10
show_logo = 'yes'
net_name = 'eth0'
s1_name = 'sd'
s1_path = '/'

Load config file

config_file = '/etc/sys-oled.conf'
if os.path.isfile(config_file):
config = configparser.ConfigParser()
config.read(config_file)
contrast = int(config.get('main', 'contrast'))
refresh = float(config.get('main', 'refresh'))
show_logo = config.get('main', 'show_logo')
net_name = config.get('device', 'network_name')
s1_name = config.get('device', 'storage1_name')
s1_path = config.get('device', 'storage1_path')
if config.has_option('device', 'storage2_name'):
s2_name = config.get('device', 'storage2_name')
s2_path = config.get('device', 'storage2_path')

Load font

font_path = os.path.abspath(os.path.join(os.path.dirname(file),
'../share/sys-oled', 'C&C Red Alert [INET].ttf'))
font = ImageFont.truetype(font_path, 12)

def get_device(actual_args=None):
if actual_args is None:
actual_args = sys.argv[1:]
parser = cmdline.create_parser(description='luma.core arguments')
args = parser.parse_args(actual_args)

if args.config:
    config = cmdline.load_config(args.config)
    args = parser.parse_args(config + actual_args)

try:
    device = cmdline.create_device(args)
except error.Error as e:
    parser.error(e)

return device

def bytes2human(n):
symbols = ('K', 'M', 'G', 'T', 'P', 'E', 'Z', 'Y')
prefix = {}
for i, s in enumerate(symbols):
prefix[s] = 1 << (i + 1) * 10
for s in reversed(symbols):
if n >= prefix[s]:
value = float(n) / prefix[s]
if s in ['K', 'M']:
return '%d%s' % (int(value), s)
else:
return '%.1f%s' % (value, s)
return "%sB" % n

def mem_usage():
usage = psutil.virtual_memory()
return "mem: %s / %s - %.0f%%"
% (bytes2human(usage.used), bytes2human(usage.total), usage.percent)

def disk_usage(name, dir):
usage = psutil.disk_usage(dir)
return name + ": %s / %s - %.0f%%"
% (bytes2human(usage.used), bytes2human(usage.total), usage.percent)

def network(iface):
addr = psutil.net_if_addrs()[iface]
return "%s: %s"
% (iface, addr[0].address)

def host_time():
now = datetime.now()
hostname = os.uname()[1]
return hostname + " " + now.strftime("%Y-%m-%d %H:%M")

def display_info(device):
with canvas(device) as draw:
draw.line((0,13)+(128,13), fill="white")
draw.text((0, 15), mem_usage(), font=font, fill="white")
draw.text((0, 27), disk_usage(s1_name, s1_path), font=font, fill="white")
if 's2_name' in globals():
draw.text((0, 39), disk_usage(s2_name, s2_path), font=font, fill="white")
draw.text((0, 51), network(net_name), font=font, fill="white")
else:
draw.text((0, 39), network(net_name), font=font, fill="white")

def logo(device, msg):
img_path = os.path.abspath(os.path.join(os.path.dirname(file),
'../share/sys-oled', 'helios4_logo.png'))
logo = Image.open(img_path).convert("RGBA")

with canvas(device) as draw:
    draw.bitmap((0, 0), logo, fill="white")
    draw.text((0,52), msg, font=font, fill="white")

def sigterm_handler():
sys.exit(0)

signal.signal(signal.SIGTERM, sigterm_handler)

def main():
while True:
display_info(device)
time.sleep(refresh)
if show_logo == "yes":
logo(device, host_time())
time.sleep(refresh / 2)

if name == "main":
try:
device = get_device()
device.contrast(contrast)
main()
except KeyboardInterrupt:
pass`

[jairunet]

The LCD is now showing the correct values. At least it's working. Thank you for the suggestions.

Sincerely,