#!/usr/bin/env python """Generates the pins file for the CC3200.""" from __future__ import print_function import argparse import sys import csv SUPPORTED_AFS = { 'UART': ('TX', 'RX', 'RTS', 'CTS'), 'SPI': ('CLK', 'MOSI', 'MISO', 'CS0'), #'I2S': ('CLK', 'FS', 'DAT0', 'DAT1'), 'I2C': ('SDA', 'SCL'), 'TIM': ('PWM'), 'SD': ('CLK', 'CMD', 'DAT0'), 'ADC': ('CH0', 'CH1', 'CH2', 'CH3') } def parse_port_pin(name_str): """Parses a string and returns a (port, gpio_bit) tuple.""" if len(name_str) < 3: raise ValueError("Expecting pin name to be at least 3 characters") if name_str[:2] != 'GP': raise ValueError("Expecting pin name to start with GP") if not name_str[2:].isdigit(): raise ValueError("Expecting numeric GPIO number") port = int(int(name_str[2:]) / 8) gpio_bit = 1 << int(int(name_str[2:]) % 8) return (port, gpio_bit) class AF: """Holds the description of an alternate function""" def __init__(self, name, idx, fn, unit, type): self.name = name self.idx = idx if self.idx > 15: self.idx = -1 self.fn = fn self.unit = unit self.type = type def print(self): print (' AF({:16s}, {:4d}, {:8s}, {:4d}, {:8s}), // {}'.format(self.name, self.idx, self.fn, self.unit, self.type, self.name)) class Pin: """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 self.afs = [] def add_af(self, af): self.afs.append(af) def print(self): print('// {}'.format(self.name)) if len(self.afs): print('const pin_af_t pin_{}_af[] = {{'.format(self.name)) for af in self.afs: af.print() print('};') print('pin_obj_t pin_{:4s} = PIN({:6s}, {:1d}, {:3d}, {:2d}, pin_{}_af, {});\n'.format( self.name, self.name, self.port, self.gpio_bit, self.pin_num, self.name, len(self.afs))) else: print('pin_obj_t pin_{:4s} = PIN({:6s}, {:1d}, {:3d}, {:2d}, NULL, 0);\n'.format( self.name, self.name, self.port, self.gpio_bit, self.pin_num)) def print_header(self, hdr_file): hdr_file.write('extern pin_obj_t pin_{:s};\n'.format(self.name)) class Pins: def __init__(self): self.board_pins = [] # list of pin objects def find_pin(self, port, gpio_bit): for pin in self.board_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.board_pins: if pin.pin_num == pin_num: return pin def find_pin_by_name(self, name): for pin in self.board_pins: if pin.name == name: return pin def parse_af_file(self, filename, pin_col, pinname_col, af_start_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.board_pins.append(pin) af_idx = 0 for af in row[af_start_col:]: af_splitted = af.split('_') fn_name = af_splitted[0].rstrip('0123456789') if fn_name in SUPPORTED_AFS: type_name = af_splitted[1] if type_name in SUPPORTED_AFS[fn_name]: unit_idx = af_splitted[0][-1] pin.add_af(AF(af, af_idx, fn_name, int(unit_idx), type_name)) af_idx += 1 def parse_board_file(self, filename, cpu_pin_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 if row[cpu_pin_col].isdigit(): pin = self.find_pin_by_num(int(row[cpu_pin_col]) - 1) else: pin = self.find_pin_by_name(row[cpu_pin_col]) if pin: pin.board_pin = True def print_named(self, label, pins): print('') print('STATIC const mp_rom_map_elem_t pin_{:s}_pins_locals_dict_table[] = {{'.format(label)) for pin in pins: if pin.board_pin: print(' {{ MP_ROM_QSTR(MP_QSTR_{:6s}), MP_ROM_PTR(&pin_{:6s}) }},'.format(pin.name, 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.board_pins: if pin.board_pin: pin.print() self.print_named('board', self.board_pins) print('') def print_header(self, hdr_filename): with open(hdr_filename, 'wt') as hdr_file: for pin in self.board_pins: if pin.board_pin: pin.print_header(hdr_file) def print_qstr(self, qstr_filename): with open(qstr_filename, 'wt') as qstr_file: pin_qstr_set = set([]) af_qstr_set = set([]) for pin in self.board_pins: if pin.board_pin: pin_qstr_set |= set([pin.name]) for af in pin.afs: af_qstr_set |= set([af.name]) print('// Board pins', file=qstr_file) for qstr in sorted(pin_qstr_set): print('Q({})'.format(qstr), file=qstr_file) print('\n// Pin AFs', file=qstr_file) for qstr in sorted(af_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, 3) 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()