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 N_PWM = 1
  12 Addressing = 'WORD'
  13 ADDR_WIDTH = 32
  14 DATA_WIDTH = 32
  15 # ================ #
  16
  17 # Generating the number of bits for memory map #
  18 lower_offset = 0
  19 if(Addressing == 'BYTE'):
  20     lower_offset = 0
  21 elif(Addressing == 'HWORD'):
  22     lower_offset = 1
  23 elif(Addressing == 'WORD'):
  24     lower_offset = 2
  25 elif(Addressing == 'DWORD'):
  26     lower_offset = 3
  27 else:
  28     print('ERROR: Addressing should be one of: BYTE, HWORD, WORD, DWORD')
  29     exit(1)
  30
  31
  32 def missing_numbers(num_list):
  33     original_list = [x for x in range(num_list[0], num_list[-1] + 1)]
  34     num_list = set(num_list)
  35     return (list(num_list ^ set(original_list)))
  36
  37
  38 # == capture the number of IO cells required == #
  39 pinmapfile = open('pinmap.txt', 'r')
  40 max_io = 0
  41 muxed_cells = []
  42 dedicated_cells = []
  43 pinnumbers = []
  44 for lineno, line in enumerate(pinmapfile):
  45     line1 = line.split()
  46     if(len(line1) > 1):
  47         pinnumbers.append(int(line1[0]))
  48         if(len(line1) == 2):  # dedicated
  49             dedicated_cells.append(line1)
  50         if(len(line1) > 2):
  51             muxed_cells.append(line1)
  52 pinnumbers = sorted(pinnumbers)
  53
  54 upper_offset = lower_offset + int(math.log(len(muxed_cells), 2))
  55 # ============================================= #
  56 # ======= Multiple checks to see if the user has not screwed ======#
  57 missing_pins = missing_numbers(pinnumbers)
  58
  59 # Check-1: ensure that no pin is present in both muxed and dedicated pins
  60 for muxcell in muxed_cells:
  61     for dedcel in dedicated_cells:
  62         if(dedcel[1] in muxcell):
  63             print("ERROR: " + str(dedcel[1]) + " present \
  64                                   in dedicated & muxed lists")
  65             exit(1)
  66
  67 # Check-2: if pin numbering is consistent:
  68 if missing_pins:
  69     print("ERROR: Following pins have no assignment: " +
  70           str(missing_numbers(pinnumbers)))
  71     exit(1)
  72 unique = set(pinnumbers)
  73 duplicate = False
  74 for each in unique:
  75     count = pinnumbers.count(each)
  76     if(count > 1):
  77         print("ERROR: Multiple assignment for pin: " + str(each))
  78         duplicate = True
  79 if(duplicate):
  80     exit(1)
  81
  82 # Check-2: confirm if N_* matches the instances in the pinmap
  83 # ============================================================== #
  84
  85 # == user info after parsin ================= #
  86 N_IO = len(dedicated_cells) + len(muxed_cells)
  87 print("Max number of IO: " + str(N_IO))
  88 print("Muxed IOs: " + str(len(muxed_cells)))
  89 print("Dedicated IOs: " + str(len(dedicated_cells)))
  90 # ============================================ #