Managed to get information about the battery with the actual pi-topOS.
Started with some small bash-scripts.
SoC.sh
#!/bin/bash hexadezimal=$(i2cget -y 1 0x0b 0x0d w) dezimal=$(printf "%d" "$hexadezimal") #devided=$(echo "scale=3; $dezimal / 10000" | bc) echo "State of Charge: $dezimal %"
runTimeToEmpty.sh
#!/bin/bash hexadezimal=$(i2cget -y 1 0x0b 0x11 w) dezimal=$(printf "%d" "$hexadezimal") #devided=$(echo "scale=3; $dezimal / 100000" | bc) if [ "$dezimal" -eq 65535 ]; then echo "Powercord connected" else stunden=$((dezimal / 60)) rest=$((dezimal % 60)) #echo "RunTimeToEmpty: $dezimal min" echo "RunTimeToEmpty: $stunden h $rest min" fi
And ended up with a little hooked up i2c display to show the battery state:
Prerequisites
pip3 install board pip3 install adafruit-circuitpython-ssd1306 sudo apt-get install python3-pil
SoC_Display.py
/home/pi/python/
#!/usr/bin/env python3 import smbus import time import board from PIL import Image, ImageDraw, ImageFont import adafruit_ssd1306 import time bus = smbus.SMBus(1) address = 0x0b register = 0x0d timeRegister = 0x11 #Change these #to the right size for your display! WIDTH = 128 HEIGHT = 32 # Change to 64 if needed BORDER = 1 #Use for I2C. i2c = board.I2C() # uses board.SCL and board.SDA oled = adafruit_ssd1306.SSD1306_I2C(WIDTH, HEIGHT, i2c, addr=0x3C) #Load default font. font = ImageFont.load_default() while True: hex_timeValue = bus.read_word_data(address, timeRegister) decimal_timeValue = hex_timeValue & 0xFFFF if decimal_timeValue == 65535: timeText = ("Laden") else: hours = decimal_timeValue // 60 minutes = decimal_timeValue % 60 timeText = (f"{hours}h {minutes}m") time.sleep(1) hex_value = bus.read_word_data(address, register) decimal_value = hex_value & 0xFFFF text = (f"{decimal_value}%") oled.fill(0) oled.show() #Create blank image for drawing. #Make sure to create image with mode '1' for 1-bit color. image = Image.new("1", (oled.width, oled.height)) #Get drawing object to draw on image. draw = ImageDraw.Draw(image) #Draw a white background draw.rectangle((0, 0, oled.width, oled.height), outline=255, fill=255) #Draw a smaller inner rectangle draw.rectangle( (BORDER, BORDER, oled.width - BORDER - 1, oled.height - BORDER - 1), outline=0, fill=0, ) combinedText = timeText + " / " + text draw.text( (4,4), combinedText, font=font, fill=255, )
battery.service
/etc/systemd/system/
[Unit] Description=Gibt den SoC auf einem OLED Display aus [Service] ExecStart=/usr/bin/python3 /home/pi/python/SoC_Display.py WorkingDirectory=/home/pi/python Restart=always User=pi [Install] WantedBy=multi-user.target
