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 # == capture the number of IO cells required == #
  10 pinmapfile = open('pinmap.txt', 'r')
  11 max_io = 0
  12 muxed_cells = []
  13 dedicated_cells = []
  14 for lineno, line in enumerate(pinmapfile):
  15     line1 = line.split()
  16     if(len(line1) > 1):
  17         if(len(line1) == 2):  # dedicated
  18             dedicated_cells.append(line1)
  19         if(len(line1) > 2):
  20             muxed_cells.append(line1)
  21 # ============================================= #
  22
  23 # ======= Multiple checks to see if the user has not screwed ======#
  24
  25 # Check-1: ensure that no pin is present in both muxed and dedicated pins
  26 for muxcell in muxed_cells:
  27     for dedcel in dedicated_cells:
  28         if(dedcel[1] in muxcell):
  29             print("ERROR: " + str(dedcel[1]) + " present \
  30                                   in dedicated & muxed lists")
  31             exit(1)
  32 # Check-2: confirm if N_* matches the instances in the pinmap
  33 # ============================================================== #
  34
  35 # == user info after parsin ================= #
  36 N_IO = len(dedicated_cells) + len(muxed_cells)
  37 print("Max number of IO: " + str(N_IO))
  38 print("Muxed IOs: " + str(len(muxed_cells)))
  39 print("Dedicated IOs: " + str(len(dedicated_cells)))
  40 # ============================================ #