anime_ex2.py

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# coding: utf-8
from PIL import Image
import smbus
import time
import sys
import requests
 
off_x=0
off_y=0
 
imax=75
jmax=16
 
anime_dir="/home/pi/Pictures/"
anime_pics_name=["anime-ex1_01.png","anime-ex1_02.png",
            "anime-ex1_03.png","anime-ex1_04.png","anime-ex1_05.png"]
anime_img=["","","","",""]
 
#print( 'number of arguments:', len(sys.argv), 'arguments.')
#arglist = sys.argv
#print( 'Argument List:', sys.argv)
#file_name=arglist[1]
#print( 'file_name=', file_name)
i2c = smbus.SMBus(1) # 注:ラズパイのI2Cポート
 
def main():
    for i in range(5):
        pic_name = anime_dir+anime_pics_name[i]
        anime_img[i] = Image.open(pic_name)
        #img = Image.open(file_name)
    for j in range(20):
        for i in range(5):
            show_one_pic(anime_img[i])
            #time.sleep(0.1)
              
#
# command:
#   clear... 0x00
#   show ... 0x01
#   set1 ix,iy,r,g,b
#         ... 0x02  *,*,  *,*,*
#   setn ix,iy,n, r0,g0,b0, ..r(n-1),g(n-1),b(n-1)   n<=8
#         ... 0x03 *,*, *, *,*,*, ..., *,*,*
#
pixels=[[(0,0,0) for j in range(jmax)] for i in range(imax)]
addrs = [0x30,0x31,0x32,0x33]
eightpix=[0x00, 0x00, 0x08, 0,0,0, 0,0,0, 0,0,0, 0,0,0, 0,0,0, 0,0,0, 0,0,0, 0,0,0]
          
def show_one_pic(img):
  img_width, img_height = img.size
  print('width:',img_width)
  print('height:',img_height)
 
  dx=img_width/jmax
  dy=img_height/imax
 
  for i in range(imax):
    for j in range(jmax):
        x=off_x+j*dx
        y=off_y+i*dy
        rgb=img.getpixel((x,y))
        pixels[i][j]=rgb
 
  i2c.write_byte(addrs[0],0x00)
  i2c.write_byte(addrs[1],0x00)
  i2c.write_byte(addrs[2],0x00)
  i2c.write_byte(addrs[3],0x00)
  for i in range(round(imax//2)):
    for j in range(4):
      for k in range(8):
        kj=k % 4
        ki=k // 4
        ii=i*2+ki
        jj=4*j+kj
        #print('ii=',ii,' jj=',jj)
        p=pixels[ii][jj]
        eightpix[3+k*3+0]=p[0]
        eightpix[3+k*3+1]=p[1]
        eightpix[3+k*3+2]=p[2]
      eightpix[0]=i*2;
      eightpix[1]=0;
      i2c_addr=addrs[j]
      try:
        i2c.write_i2c_block_data(i2c_addr,0x03,eightpix)
      except:
        print('i2c write error at:(',i,',',j,')')
    #time.sleep(0.00001)
  i2c.write_byte(addrs[0],0x01)
  i2c.write_byte(addrs[1],0x01)
  i2c.write_byte(addrs[2],0x01)
  i2c.write_byte(addrs[3],0x01)
 
main()