Initial Support for RP2040 platform (#3284)

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

.github/workflows/ci.yml

@@ -48,6 +48,10 @@ jobs:
             file: tests/test5.yaml
             name: Test tests/test5.yaml
             pio_cache_key: test5
+          - id: test
+            file: tests/test6.yaml
+            name: Test tests/test6.yaml
+            pio_cache_key: test6
           - id: pytest
             name: Run pytest
           - id: clang-format

CODEOWNERS

@@ -184,6 +184,8 @@ esphome/components/rc522_spi/* @glmnet
 esphome/components/restart/* @esphome/core
 esphome/components/rf_bridge/* @jesserockz
 esphome/components/rgbct/* @jesserockz
+esphome/components/rp2040/* @jesserockz
+esphome/components/rp2040_pwm/* @jesserockz
 esphome/components/rtttl/* @glmnet
 esphome/components/safe_mode/* @jsuanet @paulmonigatti
 esphome/components/scd4x/* @martgras @sjtrny

esphome/__main__.py

@@ -4,6 +4,7 @@ import logging
 import os
 import re
 import sys
+import time
 from datetime import datetime
 
 from esphome import const, writer, yaml_util
@@ -22,6 +23,9 @@ from esphome.const import (
     CONF_ESPHOME,
     CONF_PLATFORMIO_OPTIONS,
     CONF_SUBSTITUTIONS,
+    PLATFORM_ESP32,
+    PLATFORM_ESP8266,
+    PLATFORM_RP2040,
     SECRETS_FILES,
 )
 from esphome.core import CORE, EsphomeError, coroutine
@@ -101,11 +105,11 @@ def run_miniterm(config, port):
 
     if CONF_LOGGER not in config:
         _LOGGER.info("Logger is not enabled. Not starting UART logs.")
-        return
+        return 1
     baud_rate = config["logger"][CONF_BAUD_RATE]
     if baud_rate == 0:
         _LOGGER.info("UART logging is disabled (baud_rate=0). Not starting UART logs.")
-        return
+        return 1
     _LOGGER.info("Starting log output from %s with baud rate %s", port, baud_rate)
 
     backtrace_state = False
@@ -119,25 +123,34 @@ def run_miniterm(config, port):
         ser.dtr = False
         ser.rts = False
 
-    with ser:
-        while True:
-            try:
-                raw = ser.readline()
-            except serial.SerialException:
-                _LOGGER.error("Serial port closed!")
-                return
-            line = (
-                raw.replace(b"\r", b"")
-                .replace(b"\n", b"")
-                .decode("utf8", "backslashreplace")
-            )
-            time = datetime.now().time().strftime("[%H:%M:%S]")
-            message = time + line
-            safe_print(message)
+    tries = 0
+    while tries < 5:
+        try:
+            with ser:
+                while True:
+                    try:
+                        raw = ser.readline()
+                    except serial.SerialException:
+                        _LOGGER.error("Serial port closed!")
+                        return 0
+                    line = (
+                        raw.replace(b"\r", b"")
+                        .replace(b"\n", b"")
+                        .decode("utf8", "backslashreplace")
+                    )
+                    time_str = datetime.now().time().strftime("[%H:%M:%S]")
+                    message = time_str + line
+                    safe_print(message)
 
-            backtrace_state = platformio_api.process_stacktrace(
-                config, line, backtrace_state=backtrace_state
-            )
+                    backtrace_state = platformio_api.process_stacktrace(
+                        config, line, backtrace_state=backtrace_state
+                    )
+        except serial.SerialException:
+            tries += 1
+            time.sleep(1)
+    if tries >= 5:
+        _LOGGER.error("Could not connect to serial port %s", port)
+        return 1
 
 
 def wrap_to_code(name, comp):
@@ -258,9 +271,21 @@ def upload_using_esptool(config, port):
 
 
 def upload_program(config, args, host):
-    # if upload is to a serial port use platformio, otherwise assume ota
     if get_port_type(host) == "SERIAL":
-        return upload_using_esptool(config, host)
+        if CORE.target_platform in (PLATFORM_ESP32, PLATFORM_ESP8266):
+            return upload_using_esptool(config, host)
+
+        if CORE.target_platform in (PLATFORM_RP2040):
+            from esphome import platformio_api
+
+            upload_args = ["-t", "upload"]
+            if args.device is not None:
+                upload_args += ["--upload-port", args.device]
+            return platformio_api.run_platformio_cli_run(
+                config, CORE.verbose, *upload_args
+            )
+
+        return 1  # Unknown target platform
 
     from esphome import espota2
 
@@ -280,8 +305,7 @@ def show_logs(config, args, port):
     if "logger" not in config:
         raise EsphomeError("Logger is not configured!")
     if get_port_type(port) == "SERIAL":
-        run_miniterm(config, port)
-        return 0
+        return run_miniterm(config, port)
     if get_port_type(port) == "NETWORK" and "api" in config:
         from esphome.components.api.client import run_logs
 

esphome/components/logger/__init__.py

@@ -77,6 +77,8 @@ UART_SELECTION_ESP8266 = [UART0, UART0_SWAP, UART1]
 
 ESP_IDF_UARTS = [USB_CDC, USB_SERIAL_JTAG]
 
+UART_SELECTION_RP2040 = [UART0, UART1]
+
 HARDWARE_UART_TO_UART_SELECTION = {
     UART0: logger_ns.UART_SELECTION_UART0,
     UART0_SWAP: logger_ns.UART_SELECTION_UART0_SWAP,
@@ -106,6 +108,8 @@ def uart_selection(value):
             return cv.one_of(*UART_SELECTION_ESP32[variant], upper=True)(value)
     if CORE.is_esp8266:
         return cv.one_of(*UART_SELECTION_ESP8266, upper=True)(value)
+    if CORE.is_rp2040:
+        return cv.one_of(*UART_SELECTION_RP2040, upper=True)(value)
     raise NotImplementedError
 
 
@@ -158,12 +162,13 @@ CONFIG_SCHEMA = cv.All(
 @coroutine_with_priority(90.0)
 async def to_code(config):
     baud_rate = config[CONF_BAUD_RATE]
-    rhs = Logger.new(
-        baud_rate,
-        config[CONF_TX_BUFFER_SIZE],
-        HARDWARE_UART_TO_UART_SELECTION[config[CONF_HARDWARE_UART]],
-    )
-    log = cg.Pvariable(config[CONF_ID], rhs)
+    log = cg.new_Pvariable(config[CONF_ID], baud_rate, config[CONF_TX_BUFFER_SIZE])
+    if CONF_HARDWARE_UART in config:
+        cg.add(
+            log.set_uart_selection(
+                HARDWARE_UART_TO_UART_SELECTION[config[CONF_HARDWARE_UART]]
+            )
+        )
     cg.add(log.pre_setup())
 
     for tag, level in config[CONF_LOGS].items():

esphome/components/logger/logger.cpp

@@ -148,8 +148,7 @@ void HOT Logger::log_message_(int level, const char *tag, int offset) {
   this->log_callback_.call(level, tag, msg);
 }
 
-Logger::Logger(uint32_t baud_rate, size_t tx_buffer_size, UARTSelection uart)
-    : baud_rate_(baud_rate), tx_buffer_size_(tx_buffer_size), uart_(uart) {
+Logger::Logger(uint32_t baud_rate, size_t tx_buffer_size) : baud_rate_(baud_rate), tx_buffer_size_(tx_buffer_size) {
   // add 1 to buffer size for null terminator
   this->tx_buffer_ = new char[this->tx_buffer_size_ + 1];  // NOLINT
 }
@@ -270,6 +269,9 @@ const char *const UART_SELECTIONS[] = {
 #endif  // USE_ESP32
 #ifdef USE_ESP8266
 const char *const UART_SELECTIONS[] = {"UART0", "UART1", "UART0_SWAP"};
+#endif
+#ifdef USE_RP2040
+const char *const UART_SELECTIONS[] = {"UART0", "UART1"};
 #endif  // USE_ESP8266
 void Logger::dump_config() {
   ESP_LOGCONFIG(TAG, "Logger:");

esphome/components/logger/logger.h

@@ -7,8 +7,15 @@
 #include <cstdarg>
 
 #ifdef USE_ARDUINO
+#if defined(USE_ESP8266) || defined(USE_ESP32)
 #include <HardwareSerial.h>
-#endif
+#endif  // USE_ESP8266 || USE_ESP32
+#ifdef USE_RP2040
+#include <HardwareSerial.h>
+#include <SerialUSB.h>
+#endif  // USE_RP2040
+#endif  // USE_ARDUINO
+
 #ifdef USE_ESP_IDF
 #include <driver/uart.h>
 #endif
@@ -44,7 +51,7 @@ enum UARTSelection {
 
 class Logger : public Component {
  public:
-  explicit Logger(uint32_t baud_rate, size_t tx_buffer_size, UARTSelection uart);
+  explicit Logger(uint32_t baud_rate, size_t tx_buffer_size);
 
   /// Manually set the baud rate for serial, set to 0 to disable.
   void set_baud_rate(uint32_t baud_rate);
@@ -56,6 +63,7 @@ class Logger : public Component {
   uart_port_t get_uart_num() const { return uart_num_; }
 #endif
 
+  void set_uart_selection(UARTSelection uart_selection) { uart_ = uart_selection; }
   /// Get the UART used by the logger.
   UARTSelection get_uart() const;
 

esphome/components/md5/md5.cpp

@@ -6,7 +6,7 @@
 namespace esphome {
 namespace md5 {
 
-#ifdef USE_ARDUINO
+#if defined(USE_ARDUINO) && !defined(USE_RP2040)
 void MD5Digest::init() {
   memset(this->digest_, 0, 16);
   MD5Init(&this->ctx_);
@@ -15,7 +15,7 @@ void MD5Digest::init() {
 void MD5Digest::add(const uint8_t *data, size_t len) { MD5Update(&this->ctx_, data, len); }
 
 void MD5Digest::calculate() { MD5Final(this->digest_, &this->ctx_); }
-#endif  // USE_ARDUINO
+#endif  // USE_ARDUINO && !USE_RP2040
 
 #ifdef USE_ESP_IDF
 void MD5Digest::init() {
@@ -28,6 +28,17 @@ void MD5Digest::add(const uint8_t *data, size_t len) { esp_rom_md5_update(&this-
 void MD5Digest::calculate() { esp_rom_md5_final(this->digest_, &this->ctx_); }
 #endif  // USE_ESP_IDF
 
+#ifdef USE_RP2040
+void MD5Digest::init() {
+  memset(this->digest_, 0, 16);
+  br_md5_init(&this->ctx_);
+}
+
+void MD5Digest::add(const uint8_t *data, size_t len) { br_md5_update(&this->ctx_, data, len); }
+
+void MD5Digest::calculate() { br_md5_out(&this->ctx_, this->digest_); }
+#endif  // USE_RP2040
+
 void MD5Digest::get_bytes(uint8_t *output) { memcpy(output, this->digest_, 16); }
 
 void MD5Digest::get_hex(char *output) {

esphome/components/md5/md5.h

@@ -17,6 +17,11 @@
 #define MD5_CTX_TYPE md5_context_t
 #endif
 
+#ifdef USE_RP2040
+#include <MD5Builder.h>
+#define MD5_CTX_TYPE br_md5_context
+#endif
+
 namespace esphome {
 namespace md5 {
 

esphome/components/mdns/mdns_component.cpp

@@ -38,6 +38,9 @@ void MDNSComponent::compile_records_() {
 #endif
 #ifdef USE_ESP32
     platform = "ESP32";
+#endif
+#ifdef USE_RP2040
+    platform = "RP2040";
 #endif
     if (platform != nullptr) {
       service.txt_records.push_back({"platform", platform});

esphome/components/mdns/mdns_rp2040.cpp

@@ -0,0 +1,40 @@
+#ifdef USE_RP2040
+
+#include "esphome/components/network/ip_address.h"
+#include "esphome/components/network/util.h"
+#include "esphome/core/log.h"
+#include "mdns_component.h"
+
+namespace esphome {
+namespace mdns {
+
+void MDNSComponent::setup() {
+  this->compile_records_();
+
+  network::IPAddress addr = network::get_ip_address();
+  // MDNS.begin(this->hostname_.c_str(), (uint32_t) addr);
+
+  // for (const auto &service : this->services_) {
+  //   // Strip the leading underscore from the proto and service_type. While it is
+  //   // part of the wire protocol to have an underscore, and for example ESP-IDF
+  //   // expects the underscore to be there, the ESP8266 implementation always adds
+  //   // the underscore itself.
+  //   auto *proto = service.proto.c_str();
+  //   while (*proto == '_') {
+  //     proto++;
+  //   }
+  //   auto *service_type = service.service_type.c_str();
+  //   while (*service_type == '_') {
+  //     service_type++;
+  //   }
+  //   MDNS.addService(service_type, proto, service.port);
+  //   for (const auto &record : service.txt_records) {
+  //     MDNS.addServiceTxt(service_type, proto, record.key.c_str(), record.value.c_str());
+  //   }
+  // }
+}
+
+}  // namespace mdns
+}  // namespace esphome
+
+#endif

esphome/components/ota/__init__.py

@@ -39,7 +39,7 @@ CONFIG_SCHEMA = cv.Schema(
     {
         cv.GenerateID(): cv.declare_id(OTAComponent),
         cv.Optional(CONF_SAFE_MODE, default=True): cv.boolean,
-        cv.SplitDefault(CONF_PORT, esp8266=8266, esp32=3232): cv.port,
+        cv.SplitDefault(CONF_PORT, esp8266=8266, esp32=3232, rp2040=2040): cv.port,
         cv.Optional(CONF_PASSWORD): cv.string,
         cv.Optional(
             CONF_REBOOT_TIMEOUT, default="5min"
@@ -94,6 +94,9 @@ async def to_code(config):
     if CORE.is_esp32 and CORE.using_arduino:
         cg.add_library("Update", None)
 
+    if CORE.is_rp2040 and CORE.using_arduino:
+        cg.add_library("Updater", None)
+
     use_state_callback = False
     for conf in config.get(CONF_ON_STATE_CHANGE, []):
         trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)

esphome/components/ota/ota_backend_arduino_rp2040.cpp

@@ -0,0 +1,55 @@
+#include "esphome/core/defines.h"
+#ifdef USE_ARDUINO
+#ifdef USE_RP2040
+
+#include "esphome/components/rp2040/preferences.h"
+#include "ota_backend.h"
+#include "ota_backend_arduino_rp2040.h"
+#include "ota_component.h"
+
+#include <Updater.h>
+
+namespace esphome {
+namespace ota {
+
+OTAResponseTypes ArduinoRP2040OTABackend::begin(size_t image_size) {
+  bool ret = Update.begin(image_size, U_FLASH);
+  if (ret) {
+    return OTA_RESPONSE_OK;
+  }
+
+  uint8_t error = Update.getError();
+  if (error == UPDATE_ERROR_BOOTSTRAP)
+    return OTA_RESPONSE_ERROR_INVALID_BOOTSTRAPPING;
+  if (error == UPDATE_ERROR_NEW_FLASH_CONFIG)
+    return OTA_RESPONSE_ERROR_WRONG_NEW_FLASH_CONFIG;
+  if (error == UPDATE_ERROR_FLASH_CONFIG)
+    return OTA_RESPONSE_ERROR_WRONG_CURRENT_FLASH_CONFIG;
+  if (error == UPDATE_ERROR_SPACE)
+    return OTA_RESPONSE_ERROR_RP2040_NOT_ENOUGH_SPACE;
+  return OTA_RESPONSE_ERROR_UNKNOWN;
+}
+
+void ArduinoRP2040OTABackend::set_update_md5(const char *md5) { Update.setMD5(md5); }
+
+OTAResponseTypes ArduinoRP2040OTABackend::write(uint8_t *data, size_t len) {
+  size_t written = Update.write(data, len);
+  if (written != len) {
+    return OTA_RESPONSE_ERROR_WRITING_FLASH;
+  }
+  return OTA_RESPONSE_OK;
+}
+
+OTAResponseTypes ArduinoRP2040OTABackend::end() {
+  if (!Update.end())
+    return OTA_RESPONSE_ERROR_UPDATE_END;
+  return OTA_RESPONSE_OK;
+}
+
+void ArduinoRP2040OTABackend::abort() { Update.end(); }
+
+}  // namespace ota
+}  // namespace esphome
+
+#endif  // USE_RP2040
+#endif  // USE_ARDUINO

esphome/components/ota/ota_backend_arduino_rp2040.h

@@ -0,0 +1,27 @@
+#pragma once
+#include "esphome/core/defines.h"
+#ifdef USE_ARDUINO
+#ifdef USE_RP2040
+
+#include "esphome/core/macros.h"
+#include "ota_backend.h"
+#include "ota_component.h"
+
+namespace esphome {
+namespace ota {
+
+class ArduinoRP2040OTABackend : public OTABackend {
+ public:
+  OTAResponseTypes begin(size_t image_size) override;
+  void set_update_md5(const char *md5) override;
+  OTAResponseTypes write(uint8_t *data, size_t len) override;
+  OTAResponseTypes end() override;
+  void abort() override;
+  bool supports_compression() override { return false; }
+};
+
+}  // namespace ota
+}  // namespace esphome
+
+#endif  // USE_RP2040
+#endif  // USE_ARDUINO

esphome/components/ota/ota_component.cpp

@@ -2,6 +2,7 @@
 #include "ota_backend.h"
 #include "ota_backend_arduino_esp32.h"
 #include "ota_backend_arduino_esp8266.h"
+#include "ota_backend_arduino_rp2040.h"
 #include "ota_backend_esp_idf.h"
 
 #include "esphome/core/log.h"
@@ -35,6 +36,9 @@ std::unique_ptr<OTABackend> make_ota_backend() {
 #ifdef USE_ESP_IDF
   return make_unique<IDFOTABackend>();
 #endif  // USE_ESP_IDF
+#ifdef USE_RP2040
+  return make_unique<ArduinoRP2040OTABackend>();
+#endif  // USE_RP2040
 }
 
 OTAComponent::OTAComponent() { global_ota_component = this; }

esphome/components/ota/ota_component.h

@@ -33,6 +33,7 @@ enum OTAResponseTypes {
   OTA_RESPONSE_ERROR_ESP32_NOT_ENOUGH_SPACE = 137,
   OTA_RESPONSE_ERROR_NO_UPDATE_PARTITION = 138,
   OTA_RESPONSE_ERROR_MD5_MISMATCH = 139,
+  OTA_RESPONSE_ERROR_RP2040_NOT_ENOUGH_SPACE = 140,
   OTA_RESPONSE_ERROR_UNKNOWN = 255,
 };
 

esphome/components/rp2040/__init__.py

@@ -0,0 +1,157 @@
+import logging
+
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.const import (
+    CONF_BOARD,
+    CONF_FRAMEWORK,
+    CONF_SOURCE,
+    CONF_VERSION,
+    KEY_CORE,
+    KEY_FRAMEWORK_VERSION,
+    KEY_TARGET_FRAMEWORK,
+    KEY_TARGET_PLATFORM,
+)
+from esphome.core import CORE, coroutine_with_priority
+
+from .const import KEY_BOARD, KEY_RP2040, rp2040_ns
+
+# force import gpio to register pin schema
+from .gpio import rp2040_pin_to_code  # noqa
+
+_LOGGER = logging.getLogger(__name__)
+CODEOWNERS = ["@jesserockz"]
+AUTO_LOAD = []
+
+
+def set_core_data(config):
+    CORE.data[KEY_RP2040] = {}
+    CORE.data[KEY_CORE][KEY_TARGET_PLATFORM] = "rp2040"
+    CORE.data[KEY_CORE][KEY_TARGET_FRAMEWORK] = "arduino"
+    CORE.data[KEY_CORE][KEY_FRAMEWORK_VERSION] = cv.Version.parse(
+        config[CONF_FRAMEWORK][CONF_VERSION]
+    )
+    CORE.data[KEY_RP2040][KEY_BOARD] = config[CONF_BOARD]
+
+    return config
+
+
+def _format_framework_arduino_version(ver: cv.Version) -> str:
+    # format the given arduino (https://github.com/earlephilhower/arduino-pico/releases) version to
+    # a PIO earlephilhower/framework-arduinopico value
+    # List of package versions: https://api.registry.platformio.org/v3/packages/earlephilhower/tool/framework-arduinopico
+    return f"~1.{ver.major}{ver.minor:02d}{ver.patch:02d}.0"
+
+
+# NOTE: Keep this in mind when updating the recommended version:
+#  * The new version needs to be thoroughly validated before changing the
+#    recommended version as otherwise a bunch of devices could be bricked
+#  * For all constants below, update platformio.ini (in this repo)
+#    and platformio.ini/platformio-lint.ini in the esphome-docker-base repository
+
+# The default/recommended arduino framework version
+#  - https://github.com/earlephilhower/arduino-pico/releases
+#  - https://api.registry.platformio.org/v3/packages/earlephilhower/tool/framework-arduinopico
+RECOMMENDED_ARDUINO_FRAMEWORK_VERSION = cv.Version(2, 4, 0)
+
+# The platformio/raspberrypi version to use for arduino frameworks
+#  - https://github.com/platformio/platform-raspberrypi/releases
+#  - https://api.registry.platformio.org/v3/packages/platformio/platform/raspberrypi
+ARDUINO_PLATFORM_VERSION = cv.Version(1, 7, 0)
+
+
+def _arduino_check_versions(value):
+    value = value.copy()
+    lookups = {
+        "dev": (cv.Version(2, 4, 0), "https://github.com/earlephilhower/arduino-pico"),
+        "latest": (cv.Version(2, 4, 0), None),
+        "recommended": (RECOMMENDED_ARDUINO_FRAMEWORK_VERSION, None),
+    }
+
+    if value[CONF_VERSION] in lookups:
+        if CONF_SOURCE in value:
+            raise cv.Invalid(
+                "Framework version needs to be explicitly specified when custom source is used."
+            )
+
+        version, source = lookups[value[CONF_VERSION]]
+    else:
+        version = cv.Version.parse(cv.version_number(value[CONF_VERSION]))
+        source = value.get(CONF_SOURCE, None)
+
+    value[CONF_VERSION] = str(version)
+    value[CONF_SOURCE] = source or _format_framework_arduino_version(version)
+
+    value[CONF_PLATFORM_VERSION] = value.get(
+        CONF_PLATFORM_VERSION, _parse_platform_version(str(ARDUINO_PLATFORM_VERSION))
+    )
+
+    if version != RECOMMENDED_ARDUINO_FRAMEWORK_VERSION:
+        _LOGGER.warning(
+            "The selected Arduino framework version is not the recommended one."
+        )
+
+    return value
+
+
+def _parse_platform_version(value):
+    try:
+        # if platform version is a valid version constraint, prefix the default package
+        cv.platformio_version_constraint(value)
+        return f"platformio/raspberrypi @ {value}"
+    except cv.Invalid:
+        return value
+
+
+CONF_PLATFORM_VERSION = "platform_version"
+
+ARDUINO_FRAMEWORK_SCHEMA = cv.All(
+    cv.Schema(
+        {
+            cv.Optional(CONF_VERSION, default="recommended"): cv.string_strict,
+            cv.Optional(CONF_SOURCE): cv.string_strict,
+            cv.Optional(CONF_PLATFORM_VERSION): _parse_platform_version,
+        }
+    ),
+    _arduino_check_versions,
+)
+
+CONFIG_SCHEMA = cv.All(
+    cv.Schema(
+        {
+            cv.Required(CONF_BOARD): cv.string_strict,
+            cv.Optional(CONF_FRAMEWORK, default={}): ARDUINO_FRAMEWORK_SCHEMA,
+        }
+    ),
+    set_core_data,
+)
+
+
+@coroutine_with_priority(1000)
+async def to_code(config):
+    cg.add(rp2040_ns.setup_preferences())
+
+    cg.add_platformio_option("board", config[CONF_BOARD])
+    cg.add_build_flag("-DUSE_RP2040")
+    cg.add_define("ESPHOME_BOARD", config[CONF_BOARD])
+    cg.add_define("ESPHOME_VARIANT", "RP2040")
+
+    conf = config[CONF_FRAMEWORK]
+    cg.add_platformio_option("framework", "arduino")
+    cg.add_build_flag("-DUSE_ARDUINO")
+    cg.add_build_flag("-DUSE_RP2040_FRAMEWORK_ARDUINO")
+    # cg.add_build_flag("-DPICO_BOARD=pico_w")
+    cg.add_platformio_option("platform", conf[CONF_PLATFORM_VERSION])
+    cg.add_platformio_option(
+        "platform_packages",
+        [f"earlephilhower/framework-arduinopico @ {conf[CONF_SOURCE]}"],
+    )
+
+    cg.add_platformio_option("board_build.core", "earlephilhower")
+    cg.add_platformio_option("board_build.filesystem_size", "0.5m")
+
+    ver: cv.Version = CORE.data[KEY_CORE][KEY_FRAMEWORK_VERSION]
+    cg.add_define(
+        "USE_ARDUINO_VERSION_CODE",
+        cg.RawExpression(f"VERSION_CODE({ver.major}, {ver.minor}, {ver.patch})"),
+    )

esphome/components/rp2040/boards.py

@@ -0,0 +1,7 @@
+RP2040_BASE_PINS = {}
+
+RP2040_BOARD_PINS = {
+    "pico": {"LED": 25},
+    "rpipico": "pico",
+    "rpipicow": {},
+}

esphome/components/rp2040/const.py

@@ -0,0 +1,6 @@
+import esphome.codegen as cg
+
+KEY_BOARD = "board"
+KEY_RP2040 = "rp2040"
+
+rp2040_ns = cg.esphome_ns.namespace("rp2040")

esphome/components/rp2040/core.cpp

@@ -0,0 +1,32 @@
+#ifdef USE_RP2040
+
+#include "core.h"
+#include "esphome/core/hal.h"
+#include "esphome/core/helpers.h"
+
+#include "hardware/watchdog.h"
+
+namespace esphome {
+
+void IRAM_ATTR HOT yield() { ::yield(); }
+uint32_t IRAM_ATTR HOT millis() { return ::millis(); }
+void IRAM_ATTR HOT delay(uint32_t ms) { ::delay(ms); }
+uint32_t IRAM_ATTR HOT micros() { return ::micros(); }
+void IRAM_ATTR HOT delayMicroseconds(uint32_t us) { delay_microseconds_safe(us); }
+void arch_restart() {
+  while (true) {  // NOLINT(clang-diagnostic-unreachable-code)
+    yield();
+  }
+}
+void arch_init() { watchdog_enable(0x7fffff, false); }
+void IRAM_ATTR HOT arch_feed_wdt() { watchdog_update(); }
+
+uint8_t progmem_read_byte(const uint8_t *addr) {
+  return pgm_read_byte(addr);  // NOLINT
+}
+uint32_t IRAM_ATTR HOT arch_get_cpu_cycle_count() { return ulMainGetRunTimeCounterValue(); }
+uint32_t arch_get_cpu_freq_hz() { return RP2040::f_cpu(); }
+
+}  // namespace esphome
+
+#endif  // USE_RP2040

esphome/components/rp2040/core.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#ifdef USE_RP2040
+
+#include <Arduino.h>
+#include <pico.h>
+
+extern "C" unsigned long ulMainGetRunTimeCounterValue();
+
+namespace esphome {
+namespace rp2040 {}  // namespace rp2040
+}  // namespace esphome
+
+#endif  // USE_RP2040

esphome/components/rp2040/gpio.cpp

@@ -0,0 +1,103 @@
+#ifdef USE_RP2040
+
+#include "gpio.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace rp2040 {
+
+static const char *const TAG = "rp2040";
+
+static int IRAM_ATTR flags_to_mode(gpio::Flags flags, uint8_t pin) {
+  if (flags == gpio::FLAG_INPUT) {  // NOLINT(bugprone-branch-clone)
+    return INPUT;
+  } else if (flags == gpio::FLAG_OUTPUT) {
+    return OUTPUT;
+  } else if (flags == (gpio::FLAG_INPUT | gpio::FLAG_PULLUP)) {
+    return INPUT_PULLUP;
+  } else if (flags == (gpio::FLAG_INPUT | gpio::FLAG_PULLDOWN)) {
+    return INPUT_PULLDOWN;
+    // } else if (flags == (gpio::FLAG_OUTPUT | gpio::FLAG_OPEN_DRAIN)) {
+    //   return OpenDrain;
+  } else {
+    return 0;
+  }
+}
+
+struct ISRPinArg {
+  uint8_t pin;
+  bool inverted;
+};
+
+ISRInternalGPIOPin RP2040GPIOPin::to_isr() const {
+  auto *arg = new ISRPinArg{};  // NOLINT(cppcoreguidelines-owning-memory)
+  arg->pin = pin_;
+  arg->inverted = inverted_;
+  return ISRInternalGPIOPin((void *) arg);
+}
+
+void RP2040GPIOPin::attach_interrupt(void (*func)(void *), void *arg, gpio::InterruptType type) const {
+  PinStatus arduino_mode = LOW;
+  switch (type) {
+    case gpio::INTERRUPT_RISING_EDGE:
+      arduino_mode = inverted_ ? FALLING : RISING;
+      break;
+    case gpio::INTERRUPT_FALLING_EDGE:
+      arduino_mode = inverted_ ? RISING : FALLING;
+      break;
+    case gpio::INTERRUPT_ANY_EDGE:
+      arduino_mode = CHANGE;
+      break;
+    case gpio::INTERRUPT_LOW_LEVEL:
+      arduino_mode = inverted_ ? HIGH : LOW;
+      break;
+    case gpio::INTERRUPT_HIGH_LEVEL:
+      arduino_mode = inverted_ ? LOW : HIGH;
+      break;
+  }
+
+  attachInterrupt(pin_, func, arduino_mode, arg);
+}
+void RP2040GPIOPin::pin_mode(gpio::Flags flags) {
+  pinMode(pin_, flags_to_mode(flags, pin_));  // NOLINT
+}
+
+std::string RP2040GPIOPin::dump_summary() const {
+  char buffer[32];
+  snprintf(buffer, sizeof(buffer), "GPIO%u", pin_);
+  return buffer;
+}
+
+bool RP2040GPIOPin::digital_read() {
+  return bool(digitalRead(pin_)) != inverted_;  // NOLINT
+}
+void RP2040GPIOPin::digital_write(bool value) {
+  digitalWrite(pin_, value != inverted_ ? 1 : 0);  // NOLINT
+}
+void RP2040GPIOPin::detach_interrupt() const { detachInterrupt(pin_); }
+
+}  // namespace rp2040
+
+using namespace rp2040;
+
+bool IRAM_ATTR ISRInternalGPIOPin::digital_read() {
+  auto *arg = reinterpret_cast<ISRPinArg *>(arg_);
+  return bool(digitalRead(arg->pin)) != arg->inverted;  // NOLINT
+}
+void IRAM_ATTR ISRInternalGPIOPin::digital_write(bool value) {
+  auto *arg = reinterpret_cast<ISRPinArg *>(arg_);
+  digitalWrite(arg->pin, value != arg->inverted ? 1 : 0);  // NOLINT
+}
+void IRAM_ATTR ISRInternalGPIOPin::clear_interrupt() {
+  // TODO: implement
+  // auto *arg = reinterpret_cast<ISRPinArg *>(arg_);
+  // GPIO_REG_WRITE(GPIO_STATUS_W1TC_ADDRESS, 1UL << arg->pin);
+}
+void IRAM_ATTR ISRInternalGPIOPin::pin_mode(gpio::Flags flags) {
+  auto *arg = reinterpret_cast<ISRPinArg *>(arg_);
+  pinMode(arg->pin, flags_to_mode(flags, arg->pin));  // NOLINT
+}
+
+}  // namespace esphome
+
+#endif  // USE_RP2040

esphome/components/rp2040/gpio.h

@@ -0,0 +1,38 @@
+#pragma once
+
+#ifdef USE_RP2040
+
+#include <Arduino.h>
+#include "esphome/core/hal.h"
+
+namespace esphome {
+namespace rp2040 {
+
+class RP2040GPIOPin : public InternalGPIOPin {
+ public:
+  void set_pin(uint8_t pin) { pin_ = pin; }
+  void set_inverted(bool inverted) { inverted_ = inverted; }
+  void set_flags(gpio::Flags flags) { flags_ = flags; }
+
+  void setup() override { pin_mode(flags_); }
+  void pin_mode(gpio::Flags flags) override;
+  bool digital_read() override;
+  void digital_write(bool value) override;
+  std::string dump_summary() const override;
+  void detach_interrupt() const override;
+  ISRInternalGPIOPin to_isr() const override;
+  uint8_t get_pin() const override { return pin_; }
+  bool is_inverted() const override { return inverted_; }
+
+ protected:
+  void attach_interrupt(void (*func)(void *), void *arg, gpio::InterruptType type) const override;
+
+  uint8_t pin_;
+  bool inverted_;
+  gpio::Flags flags_;
+};
+
+}  // namespace rp2040
+}  // namespace esphome
+
+#endif  // USE_RP2040

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

esphome/components/rp2040/preferences.cpp

@@ -0,0 +1,49 @@
+#ifdef USE_RP2040
+
+#include "preferences.h"
+
+#include <cstring>
+#include "esphome/core/helpers.h"
+#include "esphome/core/log.h"
+#include "esphome/core/preferences.h"
+
+namespace esphome {
+namespace rp2040 {
+
+static const char *const TAG = "rp2040.preferences";
+
+class RP2040PreferenceBackend : public ESPPreferenceBackend {
+ public:
+  bool save(const uint8_t *data, size_t len) override { return true; }
+  bool load(uint8_t *data, size_t len) override { return false; }
+};
+
+class RP2040Preferences : public ESPPreferences {
+ public:
+  ESPPreferenceObject make_preference(size_t length, uint32_t type, bool in_flash) override {
+    auto *pref = new RP2040PreferenceBackend();  // NOLINT(cppcoreguidelines-owning-memory)
+    return ESPPreferenceObject(pref);
+  }
+
+  ESPPreferenceObject make_preference(size_t length, uint32_t type) override {
+    auto *pref = new RP2040PreferenceBackend();  // NOLINT(cppcoreguidelines-owning-memory)
+    return ESPPreferenceObject(pref);
+  }
+
+  bool sync() override { return true; }
+
+  bool reset() override { return true; }
+};
+
+void setup_preferences() {
+  auto *prefs = new RP2040Preferences();  // NOLINT(cppcoreguidelines-owning-memory)
+  global_preferences = prefs;
+}
+
+}  // namespace rp2040
+
+ESPPreferences *global_preferences;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
+
+}  // namespace esphome
+
+#endif  // USE_RP2040

esphome/components/rp2040/preferences.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#ifdef USE_RP2040
+
+namespace esphome {
+namespace rp2040 {
+
+void setup_preferences();
+
+}  // namespace rp2040
+}  // namespace esphome
+
+#endif  // USE_RP2040

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

esphome/components/rp2040_pwm/rp2040_pwm.cpp

@@ -0,0 +1,45 @@
+#ifdef USE_RP2040
+
+#include "rp2040_pwm.h"
+#include "esphome/core/defines.h"
+#include "esphome/core/helpers.h"
+#include "esphome/core/log.h"
+#include "esphome/core/macros.h"
+
+#include <PinNames.h>
+
+namespace esphome {
+namespace rp2040_pwm {
+
+static const char *const TAG = "rp2040_pwm";
+
+void RP2040PWM::setup() {
+  ESP_LOGCONFIG(TAG, "Setting up RP2040 PWM Output...");
+  this->pin_->setup();
+  this->pwm_ = new mbed::PwmOut((PinName) this->pin_->get_pin());
+  this->turn_off();
+}
+void RP2040PWM::dump_config() {
+  ESP_LOGCONFIG(TAG, "RP2040 PWM:");
+  LOG_PIN("  Pin: ", this->pin_);
+  ESP_LOGCONFIG(TAG, "  Frequency: %.1f Hz", this->frequency_);
+  LOG_FLOAT_OUTPUT(this);
+}
+void HOT RP2040PWM::write_state(float state) {
+  this->last_output_ = state;
+
+  // Also check pin inversion
+  if (this->pin_->is_inverted()) {
+    state = 1.0f - state;
+  }
+
+  auto total_time_us = static_cast<uint32_t>(roundf(1e6f / this->frequency_));
+
+  this->pwm_->period_us(total_time_us);
+  this->pwm_->write(state);
+}
+
+}  // namespace rp2040_pwm
+}  // namespace esphome
+
+#endif

esphome/components/rp2040_pwm/rp2040_pwm.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#ifdef USE_RP2040
+
+#include "esphome/components/output/float_output.h"
+#include "esphome/core/automation.h"
+#include "esphome/core/component.h"
+#include "esphome/core/hal.h"
+
+#include "drivers/PwmOut.h"
+
+namespace esphome {
+namespace rp2040_pwm {
+
+class RP2040PWM : public output::FloatOutput, public Component {
+ public:
+  void set_pin(InternalGPIOPin *pin) { pin_ = pin; }
+  void set_frequency(float frequency) { this->frequency_ = frequency; }
+  /// Dynamically update frequency
+  void update_frequency(float frequency) override {
+    this->set_frequency(frequency);
+    this->write_state(this->last_output_);
+  }
+
+  /// Initialize pin
+  void setup() override;
+  void dump_config() override;
+  /// HARDWARE setup_priority
+  float get_setup_priority() const override { return setup_priority::HARDWARE; }
+
+ protected:
+  void write_state(float state) override;
+
+  InternalGPIOPin *pin_;
+  mbed::PwmOut *pwm_;
+  float frequency_{1000.0};
+  /// Cache last output level for dynamic frequency updating
+  float last_output_{0.0};
+};
+
+template<typename... Ts> class SetFrequencyAction : public Action<Ts...> {
+ public:
+  SetFrequencyAction(RP2040PWM *parent) : parent_(parent) {}
+  TEMPLATABLE_VALUE(float, frequency);
+
+  void play(Ts... x) {
+    float freq = this->frequency_.value(x...);
+    this->parent_->update_frequency(freq);
+  }
+
+  RP2040PWM *parent_;
+};
+
+}  // namespace rp2040_pwm
+}  // namespace esphome
+
+#endif  // USE_RP2040

esphome/components/socket/__init__.py

@@ -13,6 +13,7 @@ CONFIG_SCHEMA = cv.Schema(
             CONF_IMPLEMENTATION,
             esp8266=IMPLEMENTATION_LWIP_TCP,
             esp32=IMPLEMENTATION_BSD_SOCKETS,
+            rp2040=IMPLEMENTATION_LWIP_TCP,
         ): cv.one_of(
             IMPLEMENTATION_LWIP_TCP, IMPLEMENTATION_BSD_SOCKETS, lower=True, space="_"
         ),

esphome/components/socket/headers.h

@@ -91,7 +91,7 @@ struct iovec {
   size_t iov_len;
 };
 
-#ifdef USE_ESP8266
+#if defined(USE_ESP8266) || defined(USE_RP2040)
 // arduino-esp8266 declares a global vars called INADDR_NONE/ANY which are invalid with the define
 #ifdef INADDR_ANY
 #undef INADDR_ANY

esphome/components/spi/__init__.py

@@ -46,9 +46,7 @@ async def to_code(config):
         mosi = await cg.gpio_pin_expression(config[CONF_MOSI_PIN])
         cg.add(var.set_mosi(mosi))
 
-    if CORE.is_esp32 and CORE.using_arduino:
-        cg.add_library("SPI", None)
-    if CORE.is_esp8266:
+    if CORE.using_arduino:
         cg.add_library("SPI", None)
 
 

esphome/components/spi/spi.h

@@ -105,7 +105,11 @@ class SPIComponent : public Component {
   void write_byte(uint8_t data) {
 #ifdef USE_SPI_ARDUINO_BACKEND
     if (this->hw_spi_ != nullptr) {
+#ifdef USE_RP2040
+      this->hw_spi_->transfer(data);
+#else
       this->hw_spi_->write(data);
+#endif
       return;
     }
 #endif  // USE_SPI_ARDUINO_BACKEND
@@ -116,7 +120,11 @@ class SPIComponent : public Component {
   void write_byte16(const uint16_t data) {
 #ifdef USE_SPI_ARDUINO_BACKEND
     if (this->hw_spi_ != nullptr) {
+#ifdef USE_RP2040
+      this->hw_spi_->transfer16(data);
+#else
       this->hw_spi_->write16(data);
+#endif
       return;
     }
 #endif  // USE_SPI_ARDUINO_BACKEND
@@ -130,7 +138,11 @@ class SPIComponent : public Component {
 #ifdef USE_SPI_ARDUINO_BACKEND
     if (this->hw_spi_ != nullptr) {
       for (size_t i = 0; i < length; i++) {
+#ifdef USE_RP2040
+        this->hw_spi_->transfer16(data[i]);
+#else
         this->hw_spi_->write16(data[i]);
+#endif
       }
       return;
     }
@@ -145,7 +157,11 @@ class SPIComponent : public Component {
 #ifdef USE_SPI_ARDUINO_BACKEND
     if (this->hw_spi_ != nullptr) {
       auto *data_c = const_cast<uint8_t *>(data);
+#ifdef USE_RP2040
+      this->hw_spi_->transfer(data_c, length);
+#else
       this->hw_spi_->writeBytes(data_c, length);
+#endif
       return;
     }
 #endif  // USE_SPI_ARDUINO_BACKEND
@@ -178,7 +194,11 @@ class SPIComponent : public Component {
       if (this->miso_ != nullptr) {
         this->hw_spi_->transfer(data, length);
       } else {
+#ifdef USE_RP2040
+        this->hw_spi_->transfer(data, length);
+#else
         this->hw_spi_->writeBytes(data, length);
+#endif
       }
       return;
     }

esphome/components/wifi/__init__.py

@@ -267,7 +267,7 @@ CONFIG_SCHEMA = cv.All(
                 CONF_REBOOT_TIMEOUT, default="15min"
             ): cv.positive_time_period_milliseconds,
             cv.SplitDefault(
-                CONF_POWER_SAVE_MODE, esp8266="none", esp32="light"
+                CONF_POWER_SAVE_MODE, esp8266="none", esp32="light", rp2040="light"
             ): cv.enum(WIFI_POWER_SAVE_MODES, upper=True),
             cv.Optional(CONF_FAST_CONNECT, default=False): cv.boolean,
             cv.Optional(CONF_USE_ADDRESS): cv.string_strict,
@@ -386,6 +386,8 @@ async def to_code(config):
         cg.add_library("ESP8266WiFi", None)
     elif CORE.is_esp32 and CORE.using_arduino:
         cg.add_library("WiFi", None)
+    elif CORE.is_rp2040:
+        cg.add_library("WiFi", None)
 
     if CORE.is_esp32 and CORE.using_esp_idf:
         if config[CONF_ENABLE_BTM] or config[CONF_ENABLE_RRM]:

esphome/components/wifi/wifi_component.cpp

@@ -710,6 +710,8 @@ int8_t WiFiScanResult::get_rssi() const { return this->rssi_; }
 bool WiFiScanResult::get_with_auth() const { return this->with_auth_; }
 bool WiFiScanResult::get_is_hidden() const { return this->is_hidden_; }
 
+bool WiFiScanResult::operator==(const WiFiScanResult &rhs) const { return this->bssid_ == rhs.bssid_; }
+
 WiFiComponent *global_wifi_component;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 
 }  // namespace wifi

esphome/components/wifi/wifi_component.h

@@ -24,6 +24,16 @@ extern "C" {
 #endif
 #endif
 
+#ifdef USE_RP2040
+extern "C" {
+#include "cyw43.h"
+#include "cyw43_country.h"
+#include "pico/cyw43_arch.h"
+}
+
+#include <WiFi.h>
+#endif
+
 namespace esphome {
 namespace wifi {
 
@@ -138,6 +148,8 @@ class WiFiScanResult {
   float get_priority() const { return priority_; }
   void set_priority(float priority) { priority_ = priority; }
 
+  bool operator==(const WiFiScanResult &rhs) const;
+
  protected:
   bool matches_{false};
   bssid_t bssid_;
@@ -310,6 +322,11 @@ class WiFiComponent : public Component {
   void wifi_process_event_(IDFWiFiEvent *data);
 #endif
 
+#ifdef USE_RP2040
+  static int s_wifi_scan_result(void *env, const cyw43_ev_scan_result_t *result);
+  void wifi_scan_result(void *env, const cyw43_ev_scan_result_t *result);
+#endif
+
   std::string use_address_;
   std::vector<WiFiAP> sta_;
   std::vector<WiFiSTAPriority> sta_priorities_;

esphome/components/wifi/wifi_component_pico_w.cpp

@@ -0,0 +1,204 @@
+
+#include "wifi_component.h"
+
+#ifdef USE_RP2040
+
+#include "lwip/dns.h"
+#include "lwip/err.h"
+#include "lwip/netif.h"
+
+#include "esphome/core/application.h"
+#include "esphome/core/hal.h"
+#include "esphome/core/helpers.h"
+#include "esphome/core/log.h"
+#include "esphome/core/util.h"
+
+namespace esphome {
+namespace wifi {
+
+static const char *const TAG = "wifi_pico_w";
+
+bool WiFiComponent::wifi_mode_(optional<bool> sta, optional<bool> ap) {
+  if (sta.has_value()) {
+    if (sta.value()) {
+      cyw43_wifi_set_up(&cyw43_state, CYW43_ITF_STA, true, CYW43_COUNTRY_WORLDWIDE);
+    }
+  }
+  return true;
+}
+
+bool WiFiComponent::wifi_apply_power_save_() {
+  uint32_t pm;
+  switch (this->power_save_) {
+    case WIFI_POWER_SAVE_NONE:
+      pm = CYW43_PERFORMANCE_PM;
+      break;
+    case WIFI_POWER_SAVE_LIGHT:
+      pm = CYW43_DEFAULT_PM;
+      break;
+    case WIFI_POWER_SAVE_HIGH:
+      pm = CYW43_AGGRESSIVE_PM;
+      break;
+  }
+  int ret = cyw43_wifi_pm(&cyw43_state, pm);
+  return ret == 0;
+}
+
+// TODO: The driver doesnt seem to have an API for this
+bool WiFiComponent::wifi_apply_output_power_(float output_power) { return true; }
+
+bool WiFiComponent::wifi_sta_connect_(const WiFiAP &ap) {
+  if (!this->wifi_sta_ip_config_(ap.get_manual_ip()))
+    return false;
+
+  auto ret = WiFi.begin(ap.get_ssid().c_str(), ap.get_password().c_str());
+  if (ret != WL_CONNECTED)
+    return false;
+
+  return true;
+}
+
+bool WiFiComponent::wifi_sta_pre_setup_() { return this->wifi_mode_(true, {}); }
+
+bool WiFiComponent::wifi_sta_ip_config_(optional<ManualIP> manual_ip) {
+  if (!manual_ip.has_value()) {
+    return true;
+  }
+
+  IPAddress ip_address = IPAddress(manual_ip->static_ip);
+  IPAddress gateway = IPAddress(manual_ip->gateway);
+  IPAddress subnet = IPAddress(manual_ip->subnet);
+
+  IPAddress dns = IPAddress(manual_ip->dns1);
+
+  WiFi.config(ip_address, dns, gateway, subnet);
+  return true;
+}
+
+bool WiFiComponent::wifi_apply_hostname_() {
+  WiFi.setHostname(App.get_name().c_str());
+  return true;
+}
+const char *get_auth_mode_str(uint8_t mode) {
+  // TODO:
+  return "UNKNOWN";
+}
+const char *get_disconnect_reason_str(uint8_t reason) {
+  // TODO:
+  return "UNKNOWN";
+}
+
+WiFiSTAConnectStatus WiFiComponent::wifi_sta_connect_status_() {
+  int status = cyw43_tcpip_link_status(&cyw43_state, CYW43_ITF_STA);
+  switch (status) {
+    case CYW43_LINK_JOIN:
+    case CYW43_LINK_NOIP:
+      return WiFiSTAConnectStatus::CONNECTING;
+    case CYW43_LINK_UP:
+      return WiFiSTAConnectStatus::CONNECTED;
+    case CYW43_LINK_FAIL:
+    case CYW43_LINK_BADAUTH:
+      return WiFiSTAConnectStatus::ERROR_CONNECT_FAILED;
+    case CYW43_LINK_NONET:
+      return WiFiSTAConnectStatus::ERROR_NETWORK_NOT_FOUND;
+  }
+  return WiFiSTAConnectStatus::IDLE;
+}
+
+int WiFiComponent::s_wifi_scan_result(void *env, const cyw43_ev_scan_result_t *result) {
+  global_wifi_component->wifi_scan_result(env, result);
+  return 0;
+}
+
+void WiFiComponent::wifi_scan_result(void *env, const cyw43_ev_scan_result_t *result) {
+  bssid_t bssid;
+  std::copy(result->bssid, result->bssid + 6, bssid.begin());
+  std::string ssid(reinterpret_cast<const char *>(result->ssid));
+  WiFiScanResult res(bssid, ssid, result->channel, result->rssi, result->auth_mode != CYW43_AUTH_OPEN, ssid.empty());
+  if (std::find(this->scan_result_.begin(), this->scan_result_.end(), res) == this->scan_result_.end()) {
+    this->scan_result_.push_back(res);
+  }
+}
+
+bool WiFiComponent::wifi_scan_start_() {
+  this->scan_result_.clear();
+  this->scan_done_ = false;
+  cyw43_wifi_scan_options_t scan_options = {0};
+  int err = cyw43_wifi_scan(&cyw43_state, &scan_options, nullptr, &s_wifi_scan_result);
+  if (err) {
+    ESP_LOGV(TAG, "cyw43_wifi_scan failed!");
+  }
+  return err == 0;
+  return true;
+}
+
+bool WiFiComponent::wifi_ap_ip_config_(optional<ManualIP> manual_ip) {
+  // TODO:
+  return false;
+}
+
+bool WiFiComponent::wifi_start_ap_(const WiFiAP &ap) {
+  if (!this->wifi_mode_({}, true))
+    return false;
+
+  if (ap.get_channel().has_value()) {
+    cyw43_wifi_ap_set_channel(&cyw43_state, ap.get_channel().value());
+  }
+
+  const char *ssid = ap.get_ssid().c_str();
+
+  cyw43_wifi_ap_set_ssid(&cyw43_state, strlen(ssid), (const uint8_t *) ssid);
+
+  if (!ap.get_password().empty()) {
+    const char *password = ap.get_password().c_str();
+    cyw43_wifi_ap_set_password(&cyw43_state, strlen(password), (const uint8_t *) password);
+    cyw43_wifi_ap_set_auth(&cyw43_state, CYW43_AUTH_WPA2_MIXED_PSK);
+  } else {
+    cyw43_wifi_ap_set_auth(&cyw43_state, CYW43_AUTH_OPEN);
+  }
+  cyw43_wifi_set_up(&cyw43_state, CYW43_ITF_AP, true, CYW43_COUNTRY_WORLDWIDE);
+
+  return true;
+}
+network::IPAddress WiFiComponent::wifi_soft_ap_ip() { return {WiFi.localIP()}; }
+
+bool WiFiComponent::wifi_disconnect_() {
+  int err = cyw43_wifi_leave(&cyw43_state, CYW43_ITF_STA);
+  return err == 0;
+}
+// NOTE: The driver does not provide an interface to get this
+bssid_t WiFiComponent::wifi_bssid() {
+  bssid_t bssid{};
+  uint8_t raw_bssid[6];
+  WiFi.BSSID(raw_bssid);
+  for (size_t i = 0; i < bssid.size(); i++)
+    bssid[i] = raw_bssid[i];
+  return bssid;
+}
+// NOTE: The driver does not provide an interface to get this
+std::string WiFiComponent::wifi_ssid() { return WiFi.SSID(); }
+// NOTE: The driver does not provide an interface to get this
+int8_t WiFiComponent::wifi_rssi() { return WiFi.RSSI(); }
+// NOTE: The driver does not provide an interface to get this
+int32_t WiFiComponent::wifi_channel_() { return 0; }
+network::IPAddress WiFiComponent::wifi_sta_ip() { return {WiFi.localIP()}; }
+network::IPAddress WiFiComponent::wifi_subnet_mask_() { return {WiFi.subnetMask()}; }
+network::IPAddress WiFiComponent::wifi_gateway_ip_() { return {WiFi.gatewayIP()}; }
+network::IPAddress WiFiComponent::wifi_dns_ip_(int num) {
+  const ip_addr_t *dns_ip = dns_getserver(num);
+  return {dns_ip->addr};
+}
+
+void WiFiComponent::wifi_loop_() {
+  if (this->state_ == WIFI_COMPONENT_STATE_STA_SCANNING && !cyw43_wifi_scan_active(&cyw43_state)) {
+    this->scan_done_ = true;
+    ESP_LOGV(TAG, "Scan done!");
+  }
+}
+
+void WiFiComponent::wifi_pre_setup_() {}
+
+}  // namespace wifi
+}  // namespace esphome
+
+#endif

esphome/config_validation.py

@@ -1440,6 +1440,7 @@ class SplitDefault(Optional):
         esp32=vol.UNDEFINED,
         esp32_arduino=vol.UNDEFINED,
         esp32_idf=vol.UNDEFINED,
+        rp2040=vol.UNDEFINED,
     ):
         super().__init__(key)
         self._esp8266_default = vol.default_factory(esp8266)
@@ -1449,6 +1450,7 @@ class SplitDefault(Optional):
         self._esp32_idf_default = vol.default_factory(
             esp32_idf if esp32 is vol.UNDEFINED else esp32
         )
+        self._rp2040_default = vol.default_factory(rp2040)
 
     @property
     def default(self):
@@ -1458,6 +1460,8 @@ class SplitDefault(Optional):
             return self._esp32_arduino_default
         if CORE.is_esp32 and CORE.using_esp_idf:
             return self._esp32_idf_default
+        if CORE.is_rp2040:
+            return self._rp2040_default
         raise NotImplementedError
 
     @default.setter

esphome/const.py

@@ -6,8 +6,9 @@ ALLOWED_NAME_CHARS = "abcdefghijklmnopqrstuvwxyz0123456789-_"
 
 PLATFORM_ESP32 = "esp32"
 PLATFORM_ESP8266 = "esp8266"
+PLATFORM_RP2040 = "rp2040"
 
-TARGET_PLATFORMS = [PLATFORM_ESP32, PLATFORM_ESP8266]
+TARGET_PLATFORMS = [PLATFORM_ESP32, PLATFORM_ESP8266, PLATFORM_RP2040]
 
 SOURCE_FILE_EXTENSIONS = {".cpp", ".hpp", ".h", ".c", ".tcc", ".ino"}
 HEADER_FILE_EXTENSIONS = {".h", ".hpp", ".tcc"}

esphome/core/__init__.py

@@ -594,6 +594,10 @@ class EsphomeCore:
     def is_esp32(self):
         return self.target_platform == "esp32"
 
+    @property
+    def is_rp2040(self):
+        return self.target_platform == "rp2040"
+
     @property
     def target_framework(self):
         return self.data[KEY_CORE][KEY_TARGET_FRAMEWORK]

esphome/core/helpers.cpp

@@ -21,6 +21,8 @@
 #include "esp_system.h"
 #include <freertos/FreeRTOS.h>
 #include <freertos/portmacro.h>
+#elif defined(USE_RP2040) && defined(USE_WIFI)
+#include <WiFi.h>
 #endif
 
 #ifdef USE_ESP32_IGNORE_EFUSE_MAC_CRC
@@ -91,6 +93,8 @@ uint32_t random_uint32() {
   return esp_random();
 #elif defined(USE_ESP8266)
   return os_random();
+#elif defined(USE_RP2040)
+  return ((uint32_t) rand()) << 16 + ((uint32_t) rand());
 #else
 #error "No random source available for this configuration."
 #endif
@@ -102,6 +106,8 @@ bool random_bytes(uint8_t *data, size_t len) {
   return true;
 #elif defined(USE_ESP8266)
   return os_get_random(data, len) == 0;
+#elif defined(USE_RP2040)
+  return false;
 #else
 #error "No random source available for this configuration."
 #endif
@@ -409,6 +415,8 @@ void get_mac_address_raw(uint8_t *mac) {
 #endif
 #elif defined(USE_ESP8266)
   wifi_get_macaddr(STATION_IF, mac);
+#elif defined(USE_RP2040) && defined(USE_WIFI)
+  WiFi.macAddress(mac);
 #endif
 }
 std::string get_mac_address() {

esphome/dashboard/dashboard.py

@@ -428,21 +428,27 @@ class DownloadBinaryRequestHandler(BaseHandler):
     def get(self, configuration=None):
         type = self.get_argument("type", "firmware.bin")
 
-        if type == "firmware.bin":
-            storage_path = ext_storage_path(settings.config_dir, configuration)
-            storage_json = StorageJSON.load(storage_path)
-            if storage_json is None:
-                self.send_error(404)
-                return
+        storage_path = ext_storage_path(settings.config_dir, configuration)
+        storage_json = StorageJSON.load(storage_path)
+        if storage_json is None:
+            self.send_error(404)
+            return
+
+        if storage_json.target_platform.lower() == const.PLATFORM_RP2040:
+            filename = f"{storage_json.name}.uf2"
+            path = storage_json.firmware_bin_path.replace(
+                "firmware.bin", "firmware.uf2"
+            )
+
+        elif storage_json.target_platform.lower() == const.PLATFORM_ESP8266:
+            filename = f"{storage_json.name}.bin"
+            path = storage_json.firmware_bin_path
+
+        elif type == "firmware.bin":
             filename = f"{storage_json.name}.bin"
             path = storage_json.firmware_bin_path
 
         elif type == "firmware-factory.bin":
-            storage_path = ext_storage_path(settings.config_dir, configuration)
-            storage_json = StorageJSON.load(storage_path)
-            if storage_json is None:
-                self.send_error(404)
-                return
             filename = f"{storage_json.name}-factory.bin"
             path = storage_json.firmware_bin_path.replace(
                 "firmware.bin", "firmware-factory.bin"

esphome/storage_json.py

@@ -119,16 +119,16 @@ class StorageJSON:
         )
 
     @staticmethod
-    def from_wizard(name: str, address: str, esp_platform: str) -> "StorageJSON":
+    def from_wizard(name: str, address: str, platform: str) -> "StorageJSON":
         return StorageJSON(
             storage_version=1,
             name=name,
             comment=None,
-            esphome_version=const.__version__,
+            esphome_version=None,
             src_version=1,
             address=address,
             web_port=None,
-            target_platform=esp_platform,
+            target_platform=platform,
             build_path=None,
             firmware_bin_path=None,
             loaded_integrations=[],

esphome/wizard.py

@@ -81,11 +81,20 @@ esp32:
     type: esp-idf
 """
 
+RP2040_CONFIG = """
+rp2040:
+  board: {board}
+  framework:
+    # Required until https://github.com/platformio/platform-raspberrypi/pull/36 is merged
+    platform_version: https://github.com/maxgerhardt/platform-raspberrypi.git
+"""
+
 HARDWARE_BASE_CONFIGS = {
     "ESP8266": ESP8266_CONFIG,
     "ESP32": ESP32_CONFIG,
     "ESP32S2": ESP32S2_CONFIG,
     "ESP32C3": ESP32C3_CONFIG,
+    "RP2040": RP2040_CONFIG,
 }
 
 
@@ -164,6 +173,7 @@ captive_portal:
 
 def wizard_write(path, **kwargs):
     from esphome.components.esp8266 import boards as esp8266_boards
+    from esphome.components.rp2040 import boards as rp2040_boards
 
     name = kwargs["name"]
     board = kwargs["board"]
@@ -173,9 +183,13 @@ def wizard_write(path, **kwargs):
             kwargs[key] = sanitize_double_quotes(kwargs[key])
 
     if "platform" not in kwargs:
-        kwargs["platform"] = (
-            "ESP8266" if board in esp8266_boards.ESP8266_BOARD_PINS else "ESP32"
-        )
+        if board in esp8266_boards.ESP8266_BOARD_PINS:
+            platform = "ESP8266"
+        elif board in rp2040_boards.RP2040_BOARD_PINS:
+            platform = "RP2040"
+        else:
+            platform = "ESP32"
+        kwargs["platform"] = platform
     hardware = kwargs["platform"]
 
     write_file(path, wizard_file(**kwargs))

platformio.ini

@@ -146,6 +146,24 @@ build_flags =
     -DUSE_ESP32_FRAMEWORK_ESP_IDF
 extra_scripts = post:esphome/components/esp32/post_build.py.script
 
+; These are common settings for the RP2040 using Arduino.
+[common:rp2040-arduino]
+extends = common:arduino
+board_build.core = earlephilhower
+board_build.filesystem_size = 0.5m
+
+platform = https://github.com/maxgerhardt/platform-raspberrypi.git
+platform_packages =
+    earlephilhower/framework-arduinopico @ ~1.20400.0
+
+framework = arduino
+lib_deps =
+    ${common:arduino.lib_deps}
+build_flags =
+    ${common:arduino.build_flags}
+    -DUSE_RP2040
+    -DUSE_RP2040_FRAMEWORK_ARDUINO
+
 ; All the actual environments are defined below.
 [env:esp8266-arduino]
 extends = common:esp8266-arduino
@@ -222,3 +240,10 @@ board_build.esp-idf.sdkconfig_path = .temp/sdkconfig-esp32s2-idf-tidy
 build_flags =
     ${common:esp32-idf.build_flags}
     ${flags:clangtidy.build_flags}
+
+[env:rp2040-pico-arduino]
+extends = common:rp2040-arduino
+board = pico
+build_flags =
+    ${common:rp2040-arduino.build_flags}
+    ${flags:runtime.build_flags}

script/ci-custom.py

@@ -534,6 +534,7 @@ def lint_relative_py_import(fname):
         "esphome/components/socket/headers.h",
         "esphome/components/esp32/core.cpp",
         "esphome/components/esp8266/core.cpp",
+        "esphome/components/rp2040/core.cpp",
     ],
 )
 def lint_namespace(fname, content):

tests/README.md

@@ -24,3 +24,4 @@ Current test_.yaml file contents.
 | test3.yaml | ESP8266 | wifi | N/A
 | test4.yaml | ESP32 | ethernet | None
 | test5.yaml | ESP32 | wifi | ble_server
+| test6.yaml | RP2040 | wifi | N/A

tests/dummy_main.cpp

@@ -13,8 +13,9 @@ using namespace esphome;
 
 void setup() {
   App.pre_setup("livingroom", __DATE__ ", " __TIME__, false);
-  auto *log = new logger::Logger(115200, 512, logger::UART_SELECTION_UART0);  // NOLINT
+  auto *log = new logger::Logger(115200, 512);  // NOLINT
   log->pre_setup();
+  log->set_uart_selection(logger::UART_SELECTION_UART0);
   App.register_component(log);
 
   auto *wifi = new wifi::WiFiComponent();  // NOLINT

tests/test6.yaml

@@ -0,0 +1,39 @@
+---
+esphome:
+  name: test6
+  project:
+    name: esphome.test6_project
+    version: "1.0.0"
+
+rp2040:
+  board: rpipicow
+  framework:
+    # Waiting for https://github.com/platformio/platform-raspberrypi/pull/36
+    platform_version: https://github.com/maxgerhardt/platform-raspberrypi.git
+
+
+wifi:
+  networks:
+    - ssid: "MySSID"
+      password: "password1"
+
+api:
+
+ota:
+
+logger:
+
+binary_sensor:
+  - platform: gpio
+    pin: GPIO5
+    id: pin_5_button
+
+output:
+  - platform: gpio
+    pin: GPIO4
+    id: pin_4
+
+switch:
+  - platform: output
+    output: pin_4
+    id: pin_4_switch