95 lines
2.2 KiB
Python
95 lines
2.2 KiB
Python
# SPDX-FileCopyrightText: 2021 Melissa LeBlanc-Williams for Adafruit Industries
|
|
#
|
|
# SPDX-License-Identifier: MIT
|
|
"""Generic RP2040 pin names"""
|
|
from .rp2040_u2if import rp2040_u2if
|
|
|
|
|
|
class Pin:
|
|
"""A basic Pin class for use with RP2040 with u2if firmware."""
|
|
|
|
# pin modes
|
|
IN = 0
|
|
OUT = 1
|
|
# pin values
|
|
LOW = 0
|
|
HIGH = 1
|
|
# pin pulls
|
|
PULL_NONE = 0
|
|
PULL_UP = 1
|
|
PULL_DOWN = 2
|
|
|
|
def __init__(self, pin_id=None):
|
|
self.id = pin_id
|
|
self._mode = None
|
|
self._pull = None
|
|
|
|
# pylint:disable = no-self-use
|
|
def _u2if_open_hid(self, vid, pid):
|
|
rp2040_u2if.open(vid, pid)
|
|
|
|
def init(self, mode=IN, pull=PULL_NONE):
|
|
"""Initialize the Pin"""
|
|
pull = Pin.PULL_NONE if pull is None else pull
|
|
if self.id is None:
|
|
raise RuntimeError("Can not init a None type pin.")
|
|
if mode not in (Pin.IN, Pin.OUT):
|
|
raise ValueError("Incorrect mode value.")
|
|
if pull not in (Pin.PULL_NONE, Pin.PULL_UP, Pin.PULL_DOWN):
|
|
raise ValueError("Incorrect pull value.")
|
|
|
|
rp2040_u2if.gpio_init_pin(self.id, mode, pull)
|
|
|
|
self._mode = mode
|
|
self._pull = pull
|
|
|
|
def value(self, val=None):
|
|
"""Set or return the Pin Value"""
|
|
# Digital In / Out
|
|
if self._mode in (Pin.IN, Pin.OUT):
|
|
# digital read
|
|
if val is None:
|
|
return rp2040_u2if.gpio_get_pin(self.id)
|
|
# digital write
|
|
if val in (Pin.LOW, Pin.HIGH):
|
|
rp2040_u2if.gpio_set_pin(self.id, val)
|
|
return None
|
|
# nope
|
|
raise ValueError("Invalid value for pin.")
|
|
|
|
raise RuntimeError(
|
|
"No action for mode {} with value {}".format(self._mode, val)
|
|
)
|
|
|
|
|
|
# create pin instances for each pin
|
|
GP0 = Pin(0)
|
|
GP1 = Pin(1)
|
|
GP2 = Pin(2)
|
|
GP3 = Pin(3)
|
|
GP4 = Pin(4)
|
|
GP5 = Pin(5)
|
|
GP6 = Pin(6)
|
|
GP7 = Pin(7)
|
|
GP8 = Pin(8)
|
|
GP9 = Pin(9)
|
|
GP10 = Pin(10)
|
|
GP11 = Pin(11)
|
|
GP12 = Pin(12)
|
|
GP13 = Pin(13)
|
|
GP14 = Pin(14)
|
|
GP15 = Pin(15)
|
|
GP16 = Pin(16)
|
|
GP17 = Pin(17)
|
|
GP18 = Pin(18)
|
|
GP19 = Pin(19)
|
|
GP20 = Pin(20)
|
|
GP21 = Pin(21)
|
|
GP22 = Pin(22)
|
|
GP23 = Pin(23)
|
|
GP24 = Pin(24)
|
|
GP25 = Pin(25)
|
|
GP26 = Pin(26)
|
|
GP27 = Pin(27)
|
|
GP28 = Pin(28)
|
|
GP29 = Pin(29)
|