src/parse.py

   1 import math
   2 # == Parameters == #
   3 N_MUX = 1               # number of selection lines for the mux per io
   4 N_IO = 0
   5 N_MUX_IO = 0
   6 N_UART = 4
   7 N_SPI = 1
   8 N_TWI = 2
   9 N_SD = 2
  10 N_JTAG = 2
  11 Addressing = 'WORD'
  12 ADDR_WIDTH = 32
  13 DATA_WIDTH = 32
  14 # ================ #
  15
  16 # Generating the number of bits for memory map #
  17 lower_offset = 0
  18 if(Addressing == 'BYTE'):
  19     lower_offset = 0
  20 elif(Addressing == 'HWORD'):
  21     lower_offset = 1
  22 elif(Addressing == 'WORD'):
  23     lower_offset = 2
  24 elif(Addressing == 'DWORD'):
  25     lower_offset = 3
  26 else:
  27     print('ERROR: Addressing should be one of: BYTE, HWORD, WORD, DWORD')
  28     exit(1)
  29
  30
  31 def missing_numbers(num_list):
  32     original_list = [x for x in range(num_list[0], num_list[-1] + 1)]
  33     num_list = set(num_list)
  34     return (list(num_list ^ set(original_list)))
  35
  36
  37 # == capture the number of IO cells required == #
  38 pinmapfile = open('pinmap.txt', 'r')
  39 max_io = 0
  40 muxed_cells = []
  41 dedicated_cells = []
  42 pinnumbers = []
  43 for lineno, line in enumerate(pinmapfile):
  44     line1 = line.split()
  45     if(len(line1) > 1):
  46         pinnumbers.append(int(line1[0]))
  47         if(len(line1) == 2):  # dedicated
  48             dedicated_cells.append(line1)
  49         if(len(line1) > 2):
  50             muxed_cells.append(line1)
  51 pinnumbers = sorted(pinnumbers)
  52
  53 upper_offset = lower_offset + int(math.log(len(muxed_cells), 2))
  54 # ============================================= #
  55 # ======= Multiple checks to see if the user has not screwed ======#
  56 missing_pins = missing_numbers(pinnumbers)
  57
  58 # Check-1: ensure that no pin is present in both muxed and dedicated pins
  59 for muxcell in muxed_cells:
  60     for dedcel in dedicated_cells:
  61         if(dedcel[1] in muxcell):
  62             print("ERROR: " + str(dedcel[1]) + " present \
  63                                   in dedicated & muxed lists")
  64             exit(1)
  65
  66 # Check-2: if pin numbering is consistent:
  67 if missing_pins:
  68     print("ERROR: Following pins have no assignment: " +
  69           str(missing_numbers(pinnumbers)))
  70     exit(1)
  71 unique = set(pinnumbers)
  72 duplicate = False
  73 for each in unique:
  74     count = pinnumbers.count(each)
  75     if(count > 1):
  76         print("ERROR: Multiple assignment for pin: " + str(each))
  77         duplicate = True
  78 if(duplicate):
  79     exit(1)
  80
  81 # Check-2: confirm if N_* matches the instances in the pinmap
  82 # ============================================================== #
  83
  84 # == user info after parsin ================= #
  85 N_IO = len(dedicated_cells) + len(muxed_cells)
  86 print("Max number of IO: " + str(N_IO))
  87 print("Muxed IOs: " + str(len(muxed_cells)))
  88 print("Dedicated IOs: " + str(len(dedicated_cells)))
  89 # ============================================ #