271 lines
8.5 KiB
Python
271 lines
8.5 KiB
Python
#!/usr/bin/env python
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"""Generates the pins file for the CC3200."""
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from __future__ import print_function
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import argparse
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import sys
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import csv
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SUPPORTED_AFS = {
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"UART": ("TX", "RX", "RTS", "CTS"),
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"SPI": ("CLK", "MOSI", "MISO", "CS0"),
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#'I2S': ('CLK', 'FS', 'DAT0', 'DAT1'),
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"I2C": ("SDA", "SCL"),
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"TIM": ("PWM"),
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"SD": ("CLK", "CMD", "DAT0"),
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"ADC": ("CH0", "CH1", "CH2", "CH3"),
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}
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def parse_port_pin(name_str):
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"""Parses a string and returns a (port, gpio_bit) tuple."""
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if len(name_str) < 3:
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raise ValueError("Expecting pin name to be at least 3 characters")
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if name_str[:2] != "GP":
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raise ValueError("Expecting pin name to start with GP")
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if not name_str[2:].isdigit():
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raise ValueError("Expecting numeric GPIO number")
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port = int(int(name_str[2:]) / 8)
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gpio_bit = 1 << int(int(name_str[2:]) % 8)
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return (port, gpio_bit)
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class AF:
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"""Holds the description of an alternate function"""
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def __init__(self, name, idx, fn, unit, type):
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self.name = name
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self.idx = idx
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if self.idx > 15:
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self.idx = -1
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self.fn = fn
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self.unit = unit
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self.type = type
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def print(self):
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print(
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" AF({:16s}, {:4d}, {:8s}, {:4d}, {:8s}), // {}".format(
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self.name, self.idx, self.fn, self.unit, self.type, self.name
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)
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)
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class Pin:
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"""Holds the information associated with a pin."""
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def __init__(self, name, port, gpio_bit, pin_num):
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self.name = name
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self.port = port
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self.gpio_bit = gpio_bit
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self.pin_num = pin_num
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self.board_pin = False
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self.afs = []
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def add_af(self, af):
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self.afs.append(af)
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def print(self):
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print("// {}".format(self.name))
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if len(self.afs):
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print("const pin_af_t pin_{}_af[] = {{".format(self.name))
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for af in self.afs:
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af.print()
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print("};")
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print(
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"pin_obj_t pin_{:4s} = PIN({:6s}, {:1d}, {:3d}, {:2d}, pin_{}_af, {});\n".format(
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self.name,
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self.name,
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self.port,
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self.gpio_bit,
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self.pin_num,
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self.name,
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len(self.afs),
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)
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)
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else:
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print(
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"pin_obj_t pin_{:4s} = PIN({:6s}, {:1d}, {:3d}, {:2d}, NULL, 0);\n".format(
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self.name, self.name, self.port, self.gpio_bit, self.pin_num
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)
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)
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def print_header(self, hdr_file):
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hdr_file.write("extern pin_obj_t pin_{:s};\n".format(self.name))
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class Pins:
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def __init__(self):
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self.board_pins = [] # list of pin objects
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def find_pin(self, port, gpio_bit):
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for pin in self.board_pins:
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if pin.port == port and pin.gpio_bit == gpio_bit:
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return pin
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def find_pin_by_num(self, pin_num):
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for pin in self.board_pins:
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if pin.pin_num == pin_num:
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return pin
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def find_pin_by_name(self, name):
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for pin in self.board_pins:
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if pin.name == name:
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return pin
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def parse_af_file(self, filename, pin_col, pinname_col, af_start_col):
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with open(filename, "r") as csvfile:
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rows = csv.reader(csvfile)
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for row in rows:
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try:
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(port_num, gpio_bit) = parse_port_pin(row[pinname_col])
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except:
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continue
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if not row[pin_col].isdigit():
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raise ValueError(
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"Invalid pin number {:s} in row {:s}".format(row[pin_col], row)
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)
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# Pin numbers must start from 0 when used with the TI API
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pin_num = int(row[pin_col]) - 1
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pin = Pin(row[pinname_col], port_num, gpio_bit, pin_num)
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self.board_pins.append(pin)
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af_idx = 0
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for af in row[af_start_col:]:
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af_splitted = af.split("_")
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fn_name = af_splitted[0].rstrip("0123456789")
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if fn_name in SUPPORTED_AFS:
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type_name = af_splitted[1]
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if type_name in SUPPORTED_AFS[fn_name]:
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unit_idx = af_splitted[0][-1]
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pin.add_af(AF(af, af_idx, fn_name, int(unit_idx), type_name))
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af_idx += 1
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def parse_board_file(self, filename, cpu_pin_col):
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with open(filename, "r") as csvfile:
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rows = csv.reader(csvfile)
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for row in rows:
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# Pin numbers must start from 0 when used with the TI API
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if row[cpu_pin_col].isdigit():
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pin = self.find_pin_by_num(int(row[cpu_pin_col]) - 1)
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else:
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pin = self.find_pin_by_name(row[cpu_pin_col])
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if pin:
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pin.board_pin = True
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def print_named(self, label, pins):
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print("")
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print(
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"STATIC const mp_rom_map_elem_t pin_{:s}_pins_locals_dict_table[] = {{".format(label)
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)
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for pin in pins:
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if pin.board_pin:
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print(
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" {{ MP_ROM_QSTR(MP_QSTR_{:6s}), MP_ROM_PTR(&pin_{:6s}) }},".format(
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pin.name, pin.name
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)
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)
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print("};")
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print(
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"MP_DEFINE_CONST_DICT(pin_{:s}_pins_locals_dict, pin_{:s}_pins_locals_dict_table);".format(
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label, label
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)
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)
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def print(self):
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for pin in self.board_pins:
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if pin.board_pin:
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pin.print()
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self.print_named("board", self.board_pins)
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print("")
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def print_header(self, hdr_filename):
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with open(hdr_filename, "wt") as hdr_file:
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for pin in self.board_pins:
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if pin.board_pin:
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pin.print_header(hdr_file)
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def print_qstr(self, qstr_filename):
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with open(qstr_filename, "wt") as qstr_file:
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pin_qstr_set = set([])
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af_qstr_set = set([])
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for pin in self.board_pins:
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if pin.board_pin:
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pin_qstr_set |= set([pin.name])
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for af in pin.afs:
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af_qstr_set |= set([af.name])
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print("// Board pins", file=qstr_file)
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for qstr in sorted(pin_qstr_set):
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print("Q({})".format(qstr), file=qstr_file)
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print("\n// Pin AFs", file=qstr_file)
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for qstr in sorted(af_qstr_set):
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print("Q({})".format(qstr), file=qstr_file)
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def main():
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parser = argparse.ArgumentParser(
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prog="make-pins.py",
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usage="%(prog)s [options] [command]",
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description="Generate board specific pin file",
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)
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parser.add_argument(
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"-a",
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"--af",
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dest="af_filename",
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help="Specifies the alternate function file for the chip",
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default="cc3200_af.csv",
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)
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parser.add_argument(
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"-b",
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"--board",
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dest="board_filename",
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help="Specifies the board file",
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)
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parser.add_argument(
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"-p",
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"--prefix",
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dest="prefix_filename",
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help="Specifies beginning portion of generated pins file",
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default="cc3200_prefix.c",
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)
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parser.add_argument(
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"-q",
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"--qstr",
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dest="qstr_filename",
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help="Specifies name of generated qstr header file",
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default="build/pins_qstr.h",
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)
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parser.add_argument(
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"-r",
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"--hdr",
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dest="hdr_filename",
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help="Specifies name of generated pin header file",
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default="build/pins.h",
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)
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args = parser.parse_args(sys.argv[1:])
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pins = Pins()
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print("// This file was automatically generated by make-pins.py")
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print("//")
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if args.af_filename:
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print("// --af {:s}".format(args.af_filename))
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pins.parse_af_file(args.af_filename, 0, 1, 3)
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if args.board_filename:
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print("// --board {:s}".format(args.board_filename))
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pins.parse_board_file(args.board_filename, 1)
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if args.prefix_filename:
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print("// --prefix {:s}".format(args.prefix_filename))
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print("")
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with open(args.prefix_filename, "r") as prefix_file:
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print(prefix_file.read())
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pins.print()
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pins.print_qstr(args.qstr_filename)
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pins.print_header(args.hdr_filename)
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if __name__ == "__main__":
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main()
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