Initial Support for RP2040 platform (#3284)

Co-authored-by: Paulus Schoutsen <balloob@gmail.com>

esphome/components/rp2040/gpio.py

@@ -0,0 +1,91 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.const import (
+    CONF_ID,
+    CONF_INPUT,
+    CONF_INVERTED,
+    CONF_MODE,
+    CONF_NUMBER,
+    CONF_OPEN_DRAIN,
+    CONF_OUTPUT,
+    CONF_PULLDOWN,
+    CONF_PULLUP,
+)
+from esphome.core import CORE
+from esphome import pins
+
+from . import boards
+from .const import KEY_BOARD, KEY_RP2040, rp2040_ns
+
+RP2040GPIOPin = rp2040_ns.class_("RP2040GPIOPin", cg.InternalGPIOPin)
+
+
+def _lookup_pin(value):
+    board = CORE.data[KEY_RP2040][KEY_BOARD]
+    board_pins = boards.RP2040_BOARD_PINS.get(board, {})
+
+    while isinstance(board_pins, str):
+        board_pins = boards.RP2040_BOARD_PINS[board_pins]
+
+    if value in board_pins:
+        return board_pins[value]
+    if value in boards.RP2040_BASE_PINS:
+        return boards.RP2040_BASE_PINS[value]
+    raise cv.Invalid(f"Cannot resolve pin name '{value}' for board {board}.")
+
+
+def _translate_pin(value):
+    if isinstance(value, dict) or value is None:
+        raise cv.Invalid(
+            "This variable only supports pin numbers, not full pin schemas "
+            "(with inverted and mode)."
+        )
+    if isinstance(value, int):
+        return value
+    try:
+        return int(value)
+    except ValueError:
+        pass
+    if value.startswith("GPIO"):
+        return cv.int_(value[len("GPIO") :].strip())
+    return _lookup_pin(value)
+
+
+def validate_gpio_pin(value):
+    value = _translate_pin(value)
+    if value < 0 or value > 29:
+        raise cv.Invalid(f"RP2040: Invalid pin number: {value}")
+    return value
+
+
+CONF_ANALOG = "analog"
+
+RP2040_PIN_SCHEMA = cv.All(
+    cv.Schema(
+        {
+            cv.GenerateID(): cv.declare_id(RP2040GPIOPin),
+            cv.Required(CONF_NUMBER): validate_gpio_pin,
+            cv.Optional(CONF_MODE, default={}): cv.Schema(
+                {
+                    cv.Optional(CONF_ANALOG, default=False): cv.boolean,
+                    cv.Optional(CONF_INPUT, default=False): cv.boolean,
+                    cv.Optional(CONF_OUTPUT, default=False): cv.boolean,
+                    cv.Optional(CONF_OPEN_DRAIN, default=False): cv.boolean,
+                    cv.Optional(CONF_PULLUP, default=False): cv.boolean,
+                    cv.Optional(CONF_PULLDOWN, default=False): cv.boolean,
+                }
+            ),
+            cv.Optional(CONF_INVERTED, default=False): cv.boolean,
+        }
+    )
+)
+
+
+@pins.PIN_SCHEMA_REGISTRY.register("rp2040", RP2040_PIN_SCHEMA)
+async def rp2040_pin_to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    num = config[CONF_NUMBER]
+    cg.add(var.set_pin(num))
+    cg.add(var.set_inverted(config[CONF_INVERTED]))
+    cg.add(var.set_flags(pins.gpio_flags_expr(config[CONF_MODE])))
+    return var