slight style-alteration on pinmap.txt parsing

[pinmux.git] / src / parse.py

diff --git a/src/parse.py b/src/parse.py
index cd4a3fe09d97b2cd66178bab632258cd3c2ce8a9..a11e45dff5081091884082dbf30eee6b018c929d 100644 (file)
--- a/src/parse.py
+++ b/src/parse.py
@@ -1,11 +1,4 @@
-# == Parameters == #
-N_MUX = 1              # number of selection lines for the mux per io
-N_IO = 0
-N_MUX_IO = 0
-N_UART = 4
-N_SPI = 1
-N_TWI = 2
-# ================ #
+import math
 
 
 def missing_numbers(num_list):
@@ -14,53 +7,88 @@ def missing_numbers(num_list):
     return (list(num_list ^ set(original_list)))
 
 
-# == capture the number of IO cells required == #
-pinmapfile = open('pinmap.txt', 'r')
-max_io = 0
-muxed_cells = []
-dedicated_cells = []
-pinnumbers = []
-for lineno, line in enumerate(pinmapfile):
-    line1 = line.split()
-    if(len(line1) > 1):
+class Parse(object):
+    # == Parameters == #
+    N_MUX = 1          # number of selection lines for the mux per io
+    N_IO = 0
+    N_MUX_IO = 0
+    Addressing = 'WORD'
+    ADDR_WIDTH = 32
+    DATA_WIDTH = 32
+    # ================ #
+
+    # Generating the number of bits for memory map #
+    lower_offset = 0
+    if(Addressing == 'BYTE'):
+        lower_offset = 0
+    elif(Addressing == 'HWORD'):
+        lower_offset = 1
+    elif(Addressing == 'WORD'):
+        lower_offset = 2
+    elif(Addressing == 'DWORD'):
+        lower_offset = 3
+    else:
+        print('ERROR: Addressing should be one of: BYTE, HWORD, WORD, DWORD')
+        exit(1)
+
+    # == capture the number of IO cells required == #
+    pinmapfile = open('pinmap.txt', 'r')
+    max_io = 0
+    muxed_cells = []
+    dedicated_cells = []
+    pinnumbers = []
+
+    for lineno, line in enumerate(pinmapfile):
+        line1 = line.split()
+        if len(line1) <= 1:
+            continue
         pinnumbers.append(int(line1[0]))
-        if(len(line1) == 2):  # dedicated
+        if len(line1) == 2:  # dedicated
             dedicated_cells.append(line1)
-        if(len(line1) > 2):
+        else:
             muxed_cells.append(line1)
-# ============================================= #
-# ======= Multiple checks to see if the user has not screwed ======#
-missing_pins = missing_numbers(pinnumbers)
 
-# Check-1: ensure that no pin is present in both muxed and dedicated pins
-for muxcell in muxed_cells:
-    for dedcel in dedicated_cells:
-        if(dedcel[1] in muxcell):
-            print("ERROR: " + str(dedcel[1]) + " present \
-                                  in dedicated & muxed lists")
-            exit(1)
+    pinnumbers = sorted(pinnumbers)
+    upper_offset = lower_offset + int(math.log(len(muxed_cells), 2))
+
+    # ============================================= #
+    # ======= Multiple checks to see if the user has not screwed ======#
+    missing_pins = missing_numbers(pinnumbers)
+
+    # Check-1: ensure that no pin is present in both muxed and dedicated pins
+    for muxcell in muxed_cells:
+        for dedcel in dedicated_cells:
+            if(dedcel[1] in muxcell):
+                print("ERROR: " + str(dedcel[1]) + " present \
+                                      in dedicated & muxed lists")
+                exit(1)
+
+    # Check-2: if pin numbering is consistent:
+    if missing_pins:
+        print("ERROR: Following pins have no assignment: " +
+              str(missing_numbers(pinnumbers)))
+        exit(1)
+    unique = set(pinnumbers)
+    duplicate = False
+    for each in unique:
+        count = pinnumbers.count(each)
+        if(count > 1):
+            print("ERROR: Multiple assignment for pin: " + str(each))
+            duplicate = True
+    if(duplicate):
+        exit(1)
+
+    # Check-2: confirm if N_* matches the instances in the pinmap
+    # ============================================================== #
 
-# Check-2: if pin numbering is consistent:
-if missing_pins:
-    print("ERROR: Following pins have no assignment: " +
-          str(missing_numbers(pinnumbers)))
-    exit(1)
-unique = set(pinnumbers)
-duplicate = False
-for each in unique:
-    count = pinnumbers.count(each)
-    if(count > 1):
-        print("ERROR: Multiple assignment for pin: " + str(each))
-        duplicate = True
-if(duplicate):
-    exit(1)
+    # == user info after parsin ================= #
+    N_IO = len(dedicated_cells) + len(muxed_cells)
+    print("Max number of IO: " + str(N_IO))
+    print("Muxed IOs: " + str(len(muxed_cells)))
+    print("Dedicated IOs: " + str(len(dedicated_cells)))
+    # ============================================ #
 
-# Check-2: confirm if N_* matches the instances in the pinmap
-# ============================================================== #
 
-# == user info after parsin ================= #
-N_IO = len(dedicated_cells) + len(muxed_cells)
-print("Max number of IO: " + str(N_IO))
-print("Muxed IOs: " + str(len(muxed_cells)))
-print("Dedicated IOs: " + str(len(dedicated_cells)))
-# ============================================ #
+if __name__ == '__main__':
+    p = Parse()
+    print p.N_IO