src/parse.py

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