I am having issues trying to run a python file that works with an rfid headder i have on my pi 0. Im brand new to the pi so it might be that ive not done something simple but im still stuck. I have already installed python-pil and get this
sudo apt-get install python-pillow python-pil
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'python-pil' instead of 'python-pillow'
python-pil is already the newest version (5.4.1-2+deb10u2).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
However, when i try to run my file its saying that theres no module named PIL
This is one file im having issues with and the other is listed below
from os import path
from sys import exit, version_info
from PIL import Image, ImageDraw, ImageFont
try:
from smbus import SMBus
except ImportError:
if version_info[0] < 3:
exit("This library requires python-smbus\nInstall with: sudo "
"apt-get install python-smbus")
elif version_info[0] == 3:
exit("This library requires python3-smbus\nInstall with: sudo "
"apt-get install python3-smbus")
DIR_PATH = path.abspath(path.dirname(__file__))
DefaultFont = (path.join(DIR_PATH, "Fonts/GothamLight.ttf"))
# Fundamental Command Table
SET_CONTRAST = 0x81
DISPLAY_ON = 0xA4
DISPLAY_INVERT = 0xA6
DISPLAY_ON = 0xAE # Off: sleep mode
DISPLAY_OFF = 0xAF # On: Normal Mode
# Address Settting Command Table
MEM_ADD_MODE = 0x20
COLUMN_ADD = 0x21
PAGE_ADD = 0x22
# Hardware Configuration
DISPLAY_START_LINE = 0x40
SEGMENT_REMAP = 0xA0
MUX_RATIO = 0xA8
COM_OUT_SCAN = 0xC0
COM_SCAN_REMAP = 0xC8
DISPLAY_OFFSET = 0xD3
SET_COM_PIN = 0xDA
# Timing and Driving
SET_CLK_DIV = 0xD5
SET_PRE_CHARGE = 0xD9
SET_DESELECT = 0xDB
CHARGE_PUMP = 0x8D
class i2c_interface:
def __init__(self, address=0x3c):
"""
:param address: i2c address of ssd1306
"""
self.bus = SMBus(self.bus_id())
self.address = address
def __del__(self):
self.close_i2c()
def close_i2c(self):
self.bus.close()
def bus_id(self):
"""
:return: Returns SMBUS id of Raspberry Pi
"""
revision = [lines[12:-1] for lines in open('/proc/cpuinfo',
'r').readlines() if
"Revision" in lines[:8]]
revision = (revision + ['0000'])[0]
return 1 if int(revision, 16) >= 4 else 0
def i2c_read(self, register=0):
data = self.bus.read_byte_data(self.address, register)
return data
def i2c_write(self, register=DISPLAY_START_LINE, data=0):
# Write a byte to address, register
self.bus.write_byte_data(self.address, register, data)
def i2c_write_block(self, register=DISPLAY_START_LINE, data=None):
if data is None:
data = [40]
self.bus.write_i2c_block_data(self.address, register, data)
class SSD1306(i2c_interface):
def __init__(self, width=128, height=32, address=0x3c):
i2c_interface.__init__(self, address=address)
self.Height = height
self.Width = width
self.Page = height // 8
self.address = address
self._Image = None
self._Image_New = None
self.Draw = None
self.Image_Buf = None
self.NewImage()
self.InitDisplay()
def NewImage(self):
self._Image = Image.new('1', (self.Width, self.Height), "WHITE")
self.Draw = ImageDraw.Draw(self._Image)
def DirImage(self, filename, size=None, cords=(0, 0)):
"""
:param cords: Coordinates of image on display
:param pos: X, Y positions of paste location
:param filename: Image file path
:param size: The requested size in pixels, as a 2-tuple: (width,
height)
:return: None
"""
self._Image_New = Image.open(filename).convert("1")
if not size:
size = (self.Width, self.Height)
self._Image_New = self._Image_New.resize(size)
self._Image.paste(self._Image_New, box=cords)
self.Draw = ImageDraw.Draw(self._Image)
def WriteCommand(self, cmd): # write command
self.i2c_write(register=0x00, data=cmd)
def WriteData(self, data): # write ram
self.i2c_write(register=DISPLAY_START_LINE, data=data)
def InitDisplay(self):
self.WriteCommand(DISPLAY_ON)
self.WriteCommand(DISPLAY_START_LINE)
self.WriteCommand(0xB0) # Page Address
self.WriteCommand(COM_SCAN_REMAP) # Com Output Scan
# Contrast Setting
self.WriteCommand(SET_CONTRAST)
self.WriteCommand(0xFF)
self.WriteCommand(0xA1)
self.WriteCommand(DISPLAY_INVERT)
self.WriteCommand(MUX_RATIO)
self.WriteCommand(0x1F) # Column Start Address
self.WriteCommand(DISPLAY_OFFSET)
self.WriteCommand(0x00)
self.WriteCommand(SET_CLK_DIV)
self.WriteCommand(0xF0)
self.WriteCommand(SET_PRE_CHARGE)
self.WriteCommand(PAGE_ADD)
self.WriteCommand(SET_COM_PIN)
self.WriteCommand(0x02)
self.WriteCommand(SET_DESELECT)
self.WriteCommand(0x49)
self.WriteCommand(CHARGE_PUMP)
self.WriteCommand(0x14)
self.WriteCommand(DISPLAY_OFF)
def NoDisplay(self):
for i in range(0, self.Page):
self.WriteCommand(0xb0 + i)
self.WriteCommand(0x00)
self.WriteCommand(0x10)
for j in range(0, self.Width):
self.WriteData(0x00)
def WhiteDisplay(self):
for i in range(0, self.Page):
self.WriteCommand(0xb0 + i)
self.WriteCommand(0x00)
self.WriteCommand(0x10)
for j in range(0, self.Width):
self.WriteData(0xff)
def ImgBuffer(self, image):
buf = [0xff] * (self.Page * self.Width)
Img_Mono = image.convert('1')
Img_Width, Img_Height = Img_Mono.size
pixels = Img_Mono.load()
if Img_Width == self.Width and Img_Height == self.Height:
# Horizontal screen
for y in range(Img_Height):
for x in range(Img_Width):
# Set the bits for the column of pixels at the current
# position.
if pixels[x, y] == 0:
buf[x + (y // 8) * self.Width] &= ~(1 << (y % 8))
elif Img_Width == self.Width and Img_Height == self.Height:
# Vertical screen
for y in range(Img_Height):
for x in range(Img_Width):
x_pos = y
y_pos = self.Height - x - 1
if pixels[x, y] == 0:
buf[(x_pos + int(y_pos / 8) * self.Width)] &= ~(
1 << (y % 8))
for i in range(self.Page * self.Width):
buf[i] = ~buf[i]
return buf
def ShowImage(self):
i_buf = self.ImgBuffer(self._Image)
for i in range(0, self.Page):
self.WriteCommand(0xB0 + i) # set page address
self.WriteCommand(0x00) # set low column address
self.WriteCommand(0x10) # set high column address
# write data #
for j in range(0, 128): # self.Width):
self.WriteData(i_buf[j + self.Width * i])
self.NewImage()
def PrintText(self, text, cords=(10, 5), Font=DefaultFont,
FontSize=14):
"""
:param text: Text to print
:param cords: Top left Corner (X, Y) cords
:param Font: Font Type
:param FontSize: Size of Font
:return: None
"""
self.Draw.text(cords, text, font=ImageFont.truetype(Font, FontSize))
def DrawRect(self, cords=(0, 0, 127, 31)):
"""
:param cords: X0, X1, Y0, Y1
:return: None
"""
self.Draw.rectangle(cords, outline=0)
def DrawPolygon(self, cords=(1, 2, 3, 4, 5, 6)):
"""
:param cords: Sequence of either 2-tuples like [(x, y), (x, y),
...] or numeric values like [x, y, x, y, ...]
:return: None
"""
self.Draw.polygon(cords)
def DrawPoint(self, cords=(64, 16, 66, 18)):
"""
:param cords: tuple of X, Y coordinates of Points
:return: None
"""
self.Draw.point(cords)
def DrawLine(self, cords=(64, 16, 78, 18)):
"""
Draws a line between the coordinates in the xy list
:param cords: tuple of X, Y coordinates for line
:return: None
"""
self.Draw.line(cords)
def DrawEllipse(self, cords=(64, 16, 78, 18)):
"""
Draws an ellipse inside the given bounding box
:param cords: Four points to define the bounding box
:return: None
"""
self.Draw.ellipse(cords)
def DrawArc(self, cords=(10, 10, 120, 10), start=0, end=90):
"""
Draws an arc (a portion of a circle outline) between the start and
end angles, inside the given bounding box
:param end: Starting angle, in degrees. Angles are measured from 3
o’clock, increasing clockwise.
:param start: Ending angle, in degrees.
:param cords: Four points to define the bounding box
:return: None
"""
self.Draw.arc(cords, start=start, end=end)
This is the main file which i am running
from oled_091 import SSD1306
from subprocess import check_output
from time import sleep
from datetime import datetime
from os import path
import serial
import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(17,GPIO.OUT)
DIR_PATH = path.abspath(path.dirname(__file__))
DefaultFont = path.join(DIR_PATH, "Fonts/GothamLight.ttf")
class read_rfid:
def read_rfid (self):
ser = serial.Serial ("/dev/ttyS0") #Open named port
ser.baudrate = 9600 #Set baud rate to 9600
data = ser.read(12) #Read 12 characters from serial port to data
if(data != " "):
GPIO.output(17,GPIO.HIGH)
sleep(.2)
GPIO.output(17,GPIO.LOW)
ser.close () #Close port
data=data.decode("utf-8")
return data
def info_print():
# display.WhiteDisplay()
display.DirImage(path.join(DIR_PATH, "Images/SB.png"))
display.DrawRect()
display.ShowImage()
sleep(1)
display.PrintText("Place your TAG", FontSize=14)
display.ShowImage()
display = SSD1306()
SB = read_rfid()
if __name__ == "__main__":
info_print()
while True:
id=SB.read_rfid()
print (id)
#CPU = info.CPU_Info()
# display.DirImage("Images/CPU.png", size=(24, 24), cords=(0, 0))
display.PrintText("ID : " +(id), cords=(4, 8), FontSize=11)
display.DrawRect()
display.ShowImage()
sleep(2)
display.PrintText("Place your TAG", FontSize=14)
display.ShowImage()
The full output is
pi@raspberrypi:~/SB-RFID-HAT $ python3 rfid_with_oled.py
Traceback (most recent call last):
File "rfid_with_oled.py", line 1, in <module>
from oled_091 import SSD1306
File "/home/pi/SB-RFID-HAT/oled_091.py", line 4, in <module>
from PIL import Image, ImageDraw, ImageFont
ModuleNotFoundError: No module named 'PIL'
