Neato XV-11: Difference between revisions

Line 430: Line 430:
   for t in range(10):
   for t in range(10):
     data_list.append( data2*t + (data2*t+1<<8) )
     data_list.append( data2*t + (data2*t+1<<8) )
 
   # compute the checksum on 32 bits
   # compute the checksum on 32 bits
   chk32 = 0
   chk32 = 0
   for d in data_list:
   for d in data_list:
     chk32 = (chk32 << 1) + d
     chk32 = (chk32 << 1) + d
 
   # return a value wrapped around on 15bits, and truncated to still fit into 15 bits
   # return a value wrapped around on 15bits, and truncated to still fit into 15 bits
   checksum = (chk32 & 0x7FFF) + ( chk32 >> 15 ) # wrap around to fit into 15 bits
   checksum = (chk32 & 0x7FFF) + ( chk32 >> 15 ) # wrap around to fit into 15 bits