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#!/usr/bin/env python
"""Generates the pins files for the CC3200."""
from __future__ import print_function
import argparse
import sys
import csv
def parse_port_pin(name_str):
"""Parses a string and returns a (port, gpio_bit) tuple."""
if len(name_str) < 5:
raise ValueError("Expecting pin name to be at least 5 characters")
if name_str[:4] != 'GPIO':
raise ValueError("Expecting pin name to start with GPIO")
if not name_str[4:].isdigit():
raise ValueError("Expecting numeric GPIO number")
port = int(int(name_str[4:]) / 8)
gpio_bit = 1 << int(int(name_str[4:]) % 8)
return (port, gpio_bit)
class Pin(object):
"""Holds the information associated with a pin."""
def __init__(self, name, port, gpio_bit, pin_num):
self.name = name
self.port = port
self.gpio_bit = gpio_bit
self.pin_num = pin_num
self.board_pin = False
def cpu_pin_name(self):
return self.name
def is_board_pin(self):
return self.board_pin
def set_is_board_pin(self):
self.board_pin = True
def print(self):
print('const pin_obj_t pin_{:6s} = PIN({:6s}, {:1d}, {:3d}, {:2d});'.format(
self.name, self.name, self.port, self.gpio_bit, self.pin_num))
def print_header(self, hdr_file):
hdr_file.write('extern const pin_obj_t pin_{:s};\n'.
format(self.name))
class Pins(object):
def __init__(self):
self.cpu_pins = [] # list of pin objects
def find_pin(self, port, gpio_bit):
for pin in self.cpu_pins:
if pin.port == port and pin.gpio_bit == gpio_bit:
return pin
def find_pin_by_num(self, pin_num):
for pin in self.cpu_pins:
if pin.pin_num == pin_num:
return pin
def parse_af_file(self, filename, pin_col, pinname_col):
with open(filename, 'r') as csvfile:
rows = csv.reader(csvfile)
for row in rows:
try:
(port_num, gpio_bit) = parse_port_pin(row[pinname_col])
except:
continue
if not row[pin_col].isdigit():
raise ValueError("Invalid pin number: {:s} in row {:s}".format(row[pin_col]), row)
# Pin numbers must start from 0 when used with the TI API
pin_num = int(row[pin_col]) - 1;
pin = Pin(row[pinname_col], port_num, gpio_bit, pin_num)
self.cpu_pins.append(pin)
def parse_board_file(self, filename, cpu_pin_num_col):
with open(filename, 'r') as csvfile:
rows = csv.reader(csvfile)
for row in rows:
# Pin numbers must start from 0 when used with the TI API
pin = self.find_pin_by_num(int(row[cpu_pin_num_col]) - 1)
if pin:
pin.set_is_board_pin()
def print_named(self, label, pins):
print('')
print('STATIC const mp_map_elem_t pin_{:s}_pins_locals_dict_table[] = {{'.format(label))
for pin in pins:
if pin.is_board_pin():
print(' {{ MP_OBJ_NEW_QSTR(MP_QSTR_{:6s}), (mp_obj_t)&pin_{:6s} }},'.format(pin.cpu_pin_name(), pin.cpu_pin_name()))
print('};')
print('MP_DEFINE_CONST_DICT(pin_{:s}_pins_locals_dict, pin_{:s}_pins_locals_dict_table);'.format(label, label));
def print(self):
for pin in self.cpu_pins:
if pin.is_board_pin():
pin.print()
self.print_named('cpu', self.cpu_pins)
print('')
def print_header(self, hdr_filename):
with open(hdr_filename, 'wt') as hdr_file:
for pin in self.cpu_pins:
if pin.is_board_pin():
pin.print_header(hdr_file)
def print_qstr(self, qstr_filename):
with open(qstr_filename, 'wt') as qstr_file:
qstr_set = set([])
for pin in self.cpu_pins:
if pin.is_board_pin():
qstr_set |= set([pin.cpu_pin_name()])
for qstr in sorted(qstr_set):
print('Q({})'.format(qstr), file=qstr_file)
def main():
parser = argparse.ArgumentParser(
prog="make-pins.py",
usage="%(prog)s [options] [command]",
description="Generate board specific pin file"
)
parser.add_argument(
"-a", "--af",
dest="af_filename",
help="Specifies the alternate function file for the chip",
default="cc3200_af.csv"
)
parser.add_argument(
"-b", "--board",
dest="board_filename",
help="Specifies the board file",
)
parser.add_argument(
"-p", "--prefix",
dest="prefix_filename",
help="Specifies beginning portion of generated pins file",
default="cc3200_prefix.c"
)
parser.add_argument(
"-q", "--qstr",
dest="qstr_filename",
help="Specifies name of generated qstr header file",
default="build/pins_qstr.h"
)
parser.add_argument(
"-r", "--hdr",
dest="hdr_filename",
help="Specifies name of generated pin header file",
default="build/pins.h"
)
args = parser.parse_args(sys.argv[1:])
pins = Pins()
print('// This file was automatically generated by make-pins.py')
print('//')
if args.af_filename:
print('// --af {:s}'.format(args.af_filename))
pins.parse_af_file(args.af_filename, 0, 1)
if args.board_filename:
print('// --board {:s}'.format(args.board_filename))
pins.parse_board_file(args.board_filename, 1)
if args.prefix_filename:
print('// --prefix {:s}'.format(args.prefix_filename))
print('')
with open(args.prefix_filename, 'r') as prefix_file:
print(prefix_file.read())
pins.print()
pins.print_qstr(args.qstr_filename)
pins.print_header(args.hdr_filename)
if __name__ == "__main__":
main()
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