e5cf3fab95
Pin numbers are now the MCU port numbers in the range:
PA0..PA31: 0..31
PB0..PB31: 32..63
PC0..PC31: 64..95
PD0..PD31: 96..127
Pins can be denoted by the GPIO port number, the name as defined in
pins.csv or a string in the form Pxnn, like "PA16" or "PD03".
The pins.c and pins.h files are now obsolete. The pin objects are part of
the AF table.
As result of a simplification, the code now supports using pin names or
numbers instead of pin objects for modules like UART, SPI, PWM, I2C, ADC,
pininfo.
149 lines
5.3 KiB
Python
149 lines
5.3 KiB
Python
#!/usr/bin/env python
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"""Generates the pin_cap table file for the SAMD port."""
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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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table_header = """// This file was automatically generated by make-pin-cap.py
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//
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"""
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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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self.pin_names = {}
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def parse_csv_file(self, filename):
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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 with "PA", "PB", "PC" or "PD"
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if len(row) > 0 and row[0].strip().upper()[:2] in ("PA", "PB", "PC", "PD"):
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self.board_pins.append(row)
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def parse_pin_file(self, filename):
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with open(filename, "r") as csvfile:
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rows = csv.reader(csvfile, skipinitialspace=True)
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for row in rows:
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# Pin numbers must start with "PIN_"
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# LED numbers must start with "LED_"
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if len(row) > 0:
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# for compatibility, map LED_ to PIN_
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if row[0].startswith("LED_"):
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row[0] = "PIN_" + row[0][4:]
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if len(row) == 1:
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self.pin_names[row[0]] = (row[0][4:], "{&machine_led_type}")
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else:
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self.pin_names[row[0]] = (row[1], "{&machine_led_type}")
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elif row[0].startswith("PIN_"):
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if len(row) == 1:
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self.pin_names[row[0]] = (row[0][4:], "{&machine_pin_type}")
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else:
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self.pin_names[row[0]] = (row[1], "{&machine_pin_type}")
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def print_table(self, table_filename, mcu_name):
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with open(table_filename, "wt") as table_file:
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table_file.write(table_header)
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table_file.write("const machine_pin_obj_t pin_af_table[] = {\n")
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if mcu_name == "SAMD21":
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for row in self.board_pins:
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pin = "PIN_" + row[0].upper()
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table_file.write(" #ifdef " + pin + "\n")
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eic = row[1] if row[1] else "0xff"
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adc = row[2] if row[2] else "0xff"
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if pin in self.pin_names:
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name = '"%s"' % self.pin_names[pin][0]
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type = self.pin_names[pin][1]
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else:
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name = '"-"'
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type = "{&machine_pin_type}"
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table_file.write(" {%s, %s, %s, %s, %s" % (type, pin, name, eic, adc))
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for cell in row[3:]:
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if cell:
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table_file.write(
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", 0x%s" % cell if len(cell) == 2 else ", 0x0%s" % cell
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)
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else:
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table_file.write(", 0xff")
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table_file.write("},\n")
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table_file.write(" #endif\n")
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else:
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for row in self.board_pins:
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pin = "PIN_" + row[0].upper()
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table_file.write(" #ifdef " + pin + "\n")
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eic = row[1] if row[1] else "0xff"
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adc0 = row[2] if row[2] else "0xff"
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adc1 = row[3] if row[3] else "0xff"
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if pin in self.pin_names:
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name = '"%s"' % self.pin_names[pin][0]
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type = self.pin_names[pin][1]
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else:
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name = '"-"'
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type = "{&machine_pin_type}"
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table_file.write(
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" {%s, %s, %s, %s, %s, %s" % (type, pin, name, eic, adc0, adc1)
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)
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for cell in row[4:]:
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if cell:
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table_file.write(
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", 0x%s" % cell if len(cell) == 2 else ", 0x0%s" % cell
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)
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else:
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table_file.write(", 0xff")
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table_file.write("},\n")
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table_file.write(" #endif\n")
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table_file.write("};\n")
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def main():
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parser = argparse.ArgumentParser(
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prog="make-pin-af.py",
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usage="%(prog)s [options] [command]",
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description="Generate MCU-specific pin cap table file",
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)
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parser.add_argument(
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"-c",
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"--csv",
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dest="csv_filename",
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help="Specifies the pin-af-table.csv filename",
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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="pin_filename",
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help="Specifies the pins.csv filename",
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)
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parser.add_argument(
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"-t",
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"--table",
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dest="table_filename",
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help="Specifies the name of the generated pin cap table file",
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)
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parser.add_argument(
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"-m",
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"--mcu",
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dest="mcu_name",
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help="Specifies type of the MCU (SAMD21 or SAMD51)",
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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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if args.csv_filename:
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pins.parse_csv_file(args.csv_filename)
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if args.pin_filename:
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pins.parse_pin_file(args.pin_filename)
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if args.table_filename:
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pins.print_table(args.table_filename, args.mcu_name)
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if __name__ == "__main__":
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main()
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