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131 lines
4.4 KiB
Python
Executable File
131 lines
4.4 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# RaSCSI Updates:
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# Updates to output rascsi status to an OLED display
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# Copyright (C) 2020 Tony Kuker
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# Author: Tony Kuker
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# Developed for: https://www.amazon.com/MakerFocus-Display-SSD1306-3-3V-5V-Arduino/dp/B079BN2J8V
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#
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# All other code:
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# Copyright (c) 2017 Adafruit Industries
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# Author: Tony DiCola & James DeVito
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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import time
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import os
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import sys
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import datetime
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import board
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import busio
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import adafruit_ssd1306
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from PIL import Image, ImageDraw, ImageFont
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import subprocess
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WIDTH = 128
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HEIGHT = 32 # Change to 64 if needed
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BORDER = 5
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# How long to delay between each update
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delay_time_ms = 250
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# Define the Reset Pin
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oled_reset = None
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# init i2c
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i2c = board.I2C()
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# 128x32 display with hardware I2C:
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oled = adafruit_ssd1306.SSD1306_I2C(WIDTH, HEIGHT, i2c, addr=0x3C, reset=oled_reset)
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print ("Running with the following display:")
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print (oled)
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print ()
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print ("Will update the OLED display every " + str(delay_time_ms) + "ms (approximately)")
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# Clear display.
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oled.fill(0)
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oled.show()
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# Create blank image for drawing.
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# Make sure to create image with mode '1' for 1-bit color.
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image = Image.new("1", (oled.width, oled.height))
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# Get drawing object to draw on image.
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draw = ImageDraw.Draw(image)
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# Draw a black filled box to clear the image.
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draw.rectangle((0,0,WIDTH,HEIGHT), outline=0, fill=0)
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# Draw some shapes.
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# First define some constants to allow easy resizing of shapes.
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padding = -2
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top = padding
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bottom = HEIGHT-padding
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# Move left to right keeping track of the current x position for drawing shapes.
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x = 0
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# Load default font.
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font = ImageFont.load_default()
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# Alternatively load a TTF font. Make sure the .ttf font file is in the same directory as the python script!
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# Some other nice fonts to try: http://www.dafont.com/bitmap.php
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# font = ImageFont.truetype('Minecraftia.ttf', 8)
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while True:
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# Draw a black filled box to clear the image.
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draw.rectangle((0,0,WIDTH,HEIGHT), outline=0, fill=0)
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cmd = "rasctl -l"
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rascsi_list = subprocess.check_output(cmd, shell=True).decode(sys.stdout.encoding)
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y_pos = top
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# Draw all of the meaningful data to the 'image'
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#
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# Example rascstl -l output:
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# pi@rascsi:~ $ rasctl -l
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#
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# +----+----+------+-------------------------------------
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# | ID | UN | TYPE | DEVICE STATUS
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# +----+----+------+-------------------------------------
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# | 1 | 0 | SCHD | /home/pi/harddisk.hda
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# | 6 | 0 | SCCD | NO MEDIA
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# +----+----+------+-------------------------------------
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# pi@rascsi:~ $
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for line in rascsi_list.split('\n'):
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# Skip empty strings, divider lines and the header line...
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if (len(line) == 0) or line.startswith("+---") or line.startswith("| ID | UN"):
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continue
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else:
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if line.startswith("| "):
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fields = line.split('|')
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output = str.strip(fields[1]) + " " + str.strip(fields[3]) + " " + os.path.basename(str.strip(fields[4]))
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else:
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output = "No image mounted!"
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draw.text((x, y_pos), output, font=font, fill=255)
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y_pos += 8
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# If there is still room on the screen, we'll display the time. If there's not room it will just be clipped
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draw.text((x, y_pos), datetime.datetime.now().strftime("%d/%m/%Y %H:%M:%S"), font=font, fill=255)
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# Display image.
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oled.image(image)
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oled.show()
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time.sleep(1/delay_time_ms)
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