Beaglebone black - Revision history

Thomas: /* Networking */

2019-12-07T07:56:03Z

‎Networking

Thomas: /* Raspberry Pi */

2019-12-07T07:12:31Z

‎Raspberry Pi

Thomas: /* standard BBB */

2019-12-07T07:08:07Z

‎standard BBB

Thomas: /* lcd + button script */

2019-12-07T07:06:56Z

‎lcd + button script

Thomas: /* BBB */

2019-12-07T07:01:13Z

‎BBB

Thomas: /* Raspberry Pi */

2019-12-07T07:00:34Z

‎Raspberry Pi

Thomas: /* lcd script */

2019-12-07T06:56:04Z

‎lcd script

Thomas: /* enable systemd service */

2019-12-07T06:55:22Z

‎enable systemd service

Thomas: /* reset switch */

2019-12-07T04:52:16Z

‎reset switch

Thomas: /* enable systemd service */

2019-12-07T04:51:18Z

‎enable systemd service

@@ Line 26: / Line 26: @@
      wpa-ssid hentschel
      wpa-psk bb78bbaa6a8425255774e5d49b51b4038d55c0c3e493334abbecec31c27096b6
 === reset switch ===

@@ Line 44: / Line 44: @@
 also enable i2c in /boot/config.txt
    dtparam=i2c_arm=on
 === enable systemd service ===

@@ Line 196: / Line 196: @@
 </pre>
-==== standard BBB ====
+==== BBB ====
 <pre>
 #!/usr/bin/python

@@ Line 91: / Line 91: @@
 === lcd + button script ===
 ==== standard BBB ====
 <pre>

@@ Line 64: / Line 64: @@
 ==== BBB ====
 <pre>
 [Unit]

@@ Line 62: / Line 62: @@
 WantedBy=multi-user.target
 </pre>
-* then:
    sudo systemctl daemon-reload
    sudo systemctl enable lcd.service

@@ Line 67: / Line 67: @@
    sudo systemctl start lcd.service
-=== lcd script ===
+=== lcd + button script ===
 ==== standard BBB ====
 <pre>

← Older revision		Revision as of 06:55, 7 December 2019
Line 66:		Line 66:
	sudo systemctl enable lcd.service		sudo systemctl enable lcd.service
	sudo systemctl start lcd.service		sudo systemctl start lcd.service
		+
		+	=== lcd script ===
		+	==== standard BBB ====
		+	<pre>
		+	#!/usr/bin/python
		+
		+	import time
		+	import Adafruit_BBIO.SPI as SPI
		+	import Adafruit_BBIO.GPIO as GPIO
		+	import Adafruit_SSD1306
		+	from PIL import Image
		+	from PIL import ImageDraw
		+	from PIL import ImageFont
		+	import subprocess
		+	import socket
		+	import psutil
		+	import os
		+
		+	from gpiozero import CPUTemperature
		+	from datetime import datetime
		+
		+
		+	button_off = "P8_8"
		+
		+	while True:
		+	try:
		+	GPIO.setup(button_off, GPIO.IN, GPIO.PUD_UP)
		+	button_oldstate = GPIO.input(button_off)
		+	# BBB
		+	RST = 'P9_12'
		+	disp = Adafruit_SSD1306.SSD1306_128_32(rst=RST, i2c_bus=2)
		+	# Raspi
		+	# RST = 0
		+	# disp = Adafruit_SSD1306.SSD1306_128_32(rst=None)
		+	disp.begin()
		+	disp.clear()
		+	disp.display()
		+	#
		+	width = disp.width
		+	height = disp.height
		+	#
		+	image1 = Image.new('1', (width, height))
		+	draw = ImageDraw.Draw(image1)
		+	draw.rectangle((0,0,width,height), outline=0, fill=0)
		+	#
		+	padding = -2
		+	top = padding
		+	bottom = height-padding
		+	x = 0
		+	font = ImageFont.load_default()
		+	#
		+	s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
		+	s.connect(("192.168.1.1", 80))
		+	hostname = socket.gethostname()
		+	ip = s.getsockname()[0]
		+	firstline = ip + " " + hostname
		+	#
		+	while True:
		+	time.sleep(1)
		+	#
		+	image1 = Image.new('1', (width, height))
		+	draw = ImageDraw.Draw(image1)
		+	draw.rectangle((0,0,width,height), outline=0, fill=0)
		+	# cputemp = CPUTemperature()
		+	memstr = '{0: >5}'.format(str(int(psutil.virtual_memory().percent))) + "%\|"
		+	statvfs = os.statvfs('/')
		+	disktotal = statvfs.f_frsize * statvfs.f_blocks # Size of filesystem in bytes
		+	diskfree = statvfs.f_frsize * statvfs.f_bavail # Number of free bytes that ordinary users
		+	diskpercent = round((disktotal - diskfree) * 100.0 / float(disktotal),0)
		+	diskstr = 'SD:' + '{0: >3}'.format(str(int(diskpercent))) + "%"
		+	now = datetime.now()
		+	# tempstr ='{0: >5}'.format(str(round(cputemp.temperature,))) + u"\u00b0" + "C\|"
		+	tempstr = " \|"
		+	cpustr = '{0: >6}'.format(str(round(psutil.cpu_percent(),1))) + "%"
		+	secondline = "CPU:" + tempstr + cpustr
		+	thirdline = "MEM: " + memstr + diskstr
		+	fourthline = now.strftime("%d/%m/%Y %H:%M:%S")
		+	disp.clear()
		+	draw.text((x, top), firstline, font=font, fill=255)
		+	draw.text((x, top+8), secondline, font=font, fill=255)
		+	draw.text((x, top+16), thirdline, font=font, fill=255)
		+	draw.text((x, top+25), fourthline, font=font, fill=255)
		+	disp.image(image1)
		+	disp.display()
		+	#
		+	#
		+	button_state = GPIO.input("P8_8")
		+	if( button_state != button_oldstate ):
		+	if( button_state ):
		+	print("Button OFF")
		+	else:
		+	print("Button ON -> reboot")
		+	disp.clear()
		+	image1 = Image.new('1', (width, height))
		+	draw = ImageDraw.Draw(image1)
		+	draw.rectangle((0,0,width,height), outline=0, fill=0)
		+	draw.text((x, top + 8), "Rebooting...", font=font, fill=255)
		+	disp.image(image1)
		+	disp.display()
		+	os.system("reboot now")
		+	# exit()
		+	button_oldstate = button_state
		+	#
		+	#
		+	except Exception as e:
		+	print("LCD Error: %s" % str(e) )
		+
		+	</pre>

@@ Line 31: / Line 31: @@
    P8, GPIO 67 <-> GND
 * RasPi
-   GPIO 4
+   GPIO 4 <-> GND
 === install software ===

← Older revision		Revision as of 04:51, 7 December 2019
Line 62:		Line 62:
	WantedBy=multi-user.target		WantedBy=multi-user.target
	</pre>		</pre>
		+	* then:
		+	sudo systemctl daemon-reload
		+	sudo systemctl enable lcd.service
		+	sudo systemctl start lcd.service