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