pi_i2c_nano_neomatrix_ex3.py

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import smbus
import time
i2c = smbus.SMBus(1) # 注:ラズパイのI2Cポート
#
# 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= [ \
          [ ' ',' ',' ',' ',' ',' ',' ',' '],\
                    [ ' ','r','r',' ',' ','r','r',' '],\
                    [ 'r',' ',' ','r','r',' ',' ','r'],\
                    [ 'r',' ',' ',' ',' ',' ',' ','r'],\
                    [ 'r',' ',' ',' ',' ',' ',' ','r'],\
                    [ 'r',' ',' ',' ',' ',' ',' ','r'],\
                    [ ' ','r',' ',' ',' ',' ','r',' '],\
                    [ ' ','r',' ',' ',' ',' ','r',' '],\
                    [ ' ',' ','r',' ',' ','r',' ',' '],\
                    [ ' ',' ',' ','r','r',' ',' ',' '],\
                    [ ' ',' ',' ',' ',' ',' ',' ',' '],\
                    [ ' ','g','g','g','g','g','g','g'],\
                    [ ' ',' ','g','y','y','y','g',' '],\
                    [ ' ',' ',' ','g','y','g',' ',' '],\
                    [ ' ',' ',' ','g','y','g',' ',' '],\
                    [ ' ',' ',' ',' ','g',' ',' ',' '] ]
          
addrs = [0x30,0x31]
fourpix=[0x00, 0x00, 0x04, 0,0,0, 0,0,0, 0,0,0, 0,0,0]
r_comp={' ':0x00, 'r':0xff, 'g':0x00, 'b':0x00, 'y':0xff, 'w':0xff}
g_comp={' ':0x00, 'r':0x00, 'g':0xff, 'b':0x00, 'y':0xff, 'w':0xff}
b_comp={' ':0x00, 'r':0x00, 'g':0x00, 'b':0xff, 'y':0x00, 'w':0xff}
i2c.write_byte(0x30,0x00)
i2c.write_byte(0x31,0x00)
for i in range(16):
  for j in range(2):
    for k in range(4):
      p=pixels[i][4*j+k]
      for color in ['r','g','b']:
        if color == 'r':
           fourpix[3+k*3+0]=r_comp[p]
        elif color == 'g':
           fourpix[3+k*3+1]=g_comp[p]
        elif color == 'b':
           fourpix[3+k*3+2]=b_comp[p]            
    fourpix[0]=i;
    fourpix[1]=0;
    i2c_addr=addrs[j]
    i2c.write_i2c_block_data(i2c_addr,0x03,fourpix)
  time.sleep(0.005)
i2c.write_byte(addrs[0],0x01)
i2c.write_byte(addrs[1],0x01)