Initial Support for RP2040 platform (#3284)

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

esphome/components/rp2040_pwm/output.py

@@ -0,0 +1,55 @@
+from esphome import pins, automation
+from esphome.components import output
+import esphome.config_validation as cv
+import esphome.codegen as cg
+from esphome.const import (
+    CONF_FREQUENCY,
+    CONF_ID,
+    CONF_PIN,
+)
+
+CODEOWNERS = ["@jesserockz"]
+DEPENDENCIES = ["rp2040"]
+
+
+rp2040_pwm_ns = cg.esphome_ns.namespace("rp2040_pwm")
+RP2040PWM = rp2040_pwm_ns.class_("RP2040PWM", output.FloatOutput, cg.Component)
+SetFrequencyAction = rp2040_pwm_ns.class_("SetFrequencyAction", automation.Action)
+validate_frequency = cv.All(cv.frequency, cv.Range(min=1.0e-6))
+
+CONFIG_SCHEMA = output.FLOAT_OUTPUT_SCHEMA.extend(
+    {
+        cv.Required(CONF_ID): cv.declare_id(RP2040PWM),
+        cv.Required(CONF_PIN): pins.internal_gpio_output_pin_schema,
+        cv.Optional(CONF_FREQUENCY, default="1kHz"): validate_frequency,
+    }
+).extend(cv.COMPONENT_SCHEMA)
+
+
+async def to_code(config):
+    var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
+    await output.register_output(var, config)
+
+    pin = await cg.gpio_pin_expression(config[CONF_PIN])
+    cg.add(var.set_pin(pin))
+
+    cg.add(var.set_frequency(config[CONF_FREQUENCY]))
+
+
+@automation.register_action(
+    "output.rp2040_pwm.set_frequency",
+    SetFrequencyAction,
+    cv.Schema(
+        {
+            cv.Required(CONF_ID): cv.use_id(RP2040PWM),
+            cv.Required(CONF_FREQUENCY): cv.templatable(validate_frequency),
+        }
+    ),
+)
+async def rp2040_set_frequency_to_code(config, action_id, template_arg, args):
+    paren = await cg.get_variable(config[CONF_ID])
+    var = cg.new_Pvariable(action_id, template_arg, paren)
+    template_ = await cg.templatable(config[CONF_FREQUENCY], args, float)
+    cg.add(var.set_frequency(template_))
+    return var