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#!/usr/bin/env python

# -*- Python -*-

#

# Copyright 2003 Free Software Foundation, Inc.

#

# This file is part of GNU Radio

#

# GNU Radio is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 3, or (at your option)

# any later version.

#

# GNU Radio is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

# GNU General Public License for more details.

#

# You should have received a copy of the GNU General Public License

# along with GNU Radio; see the file COPYING.  If not, write to

# the Free Software Foundation, Inc., 51 Franklin Street,

# Boston, MA 02110-1301, USA.

#

# Edit the gpif.c file generated by the Cypress GPIF Designer Tool and

# produce usrp_gpif.c, and usrp_gpif_inline.h, files suitable for our

# uses.

import re

import string

import sys

def check_flow_state (line, flow_state_dict):

    mo = re.match (r'/\* Wave (\d) FlowStates \*/ (.*),', line)

    if mo:

        wave = int (mo.group (1))

        data = mo.group (2)

        split = data.split (',', 8)

        v = map (lambda x : int (x, 16), split)

        # print "%s, %s" % (wave, data)

        # print "split: ", split

        # print "v    : ", v

        flow_state_dict[wave] = v

def delta (xseq, yseq):

    # set subtraction

    z = []

    for x in xseq:

        if x not in yseq:

            z.append (x)

    return z

def write_define (output, name, pairs):

    output.write ('#define %s()\t\\\n' % name)

    output.write ('do {\t\t\t\t\t\\\n')

    for reg, val in pairs:

        output.write ('%14s = 0x%02x;\t\t\t\\\n' % (reg, val))

    output.write ('} while (0)\n\n')

def write_inlines (output, dict):

    regs = ['FLOWSTATE', 'FLOWLOGIC', 'FLOWEQ0CTL', 'FLOWEQ1CTL', 'FLOWHOLDOFF',

            'FLOWSTB', 'FLOWSTBEDGE', 'FLOWSTBHPERIOD', 'GPIFHOLDAMOUNT']

    READ_FLOW_STATE = 2

    WRITE_FLOW_STATE = 3

    read_info = zip (regs, dict[READ_FLOW_STATE])

    write_info = zip (regs, dict[WRITE_FLOW_STATE])

    output.write ('''/*

 * Machine generated by "edit-gpif".  Do not edit by hand.

 */

''')

    write_define (output, 'setup_flowstate_common', read_info)

    write_define (output, 'setup_flowstate_read', delta (read_info, write_info))

    write_define (output, 'setup_flowstate_write', delta (write_info, read_info))

def edit_gpif (input_name, output_name, inline_name):

    input = open (input_name, 'r')

    output = open (output_name, 'w')

    inline = open (inline_name, 'w')

    flow_state_dict = {}

    output.write ('''/*

 * Machine generated by "edit-gpif".  Do not edit by hand.

 */

''')

    while 1:

        line = input.readline ()

        line = string.replace (line, '\r','')

        line = re.sub (r' *$', r'', line)

        check_flow_state (line, flow_state_dict)

        line = re.sub (r'#include', r'// #include', line)

        line = re.sub (r'xdata ', r'', line)

        if re.search (r'GpifInit', line):

            break

        output.write (line)

    output.close ()

    write_inlines (inline, flow_state_dict)

    inline.close ()

# gpif.c usrp_gpif.c usrp_gpif_inline.h

edit_gpif (sys.argv[1], sys.argv[2], sys.argv[3])