add uart button (#5540)

Co-authored-by: Samuel Sieb <samuel@sieb.net>

CODEOWNERS

@@ -323,6 +323,7 @@ esphome/components/tuya/sensor/* @jesserockz
 esphome/components/tuya/switch/* @jesserockz
 esphome/components/tuya/text_sensor/* @dentra
 esphome/components/uart/* @esphome/core
+esphome/components/uart/button/* @ssieb
 esphome/components/ufire_ec/* @pvizeli
 esphome/components/ufire_ise/* @pvizeli
 esphome/components/ultrasonic/* @OttoWinter

esphome/components/uart/button/__init__.py

@@ -0,0 +1,35 @@
+import esphome.codegen as cg
+import esphome.config_validation as cv
+from esphome.components import button, uart
+from esphome.const import CONF_DATA
+from esphome.core import HexInt
+from .. import uart_ns, validate_raw_data
+
+CODEOWNERS = ["@ssieb"]
+
+DEPENDENCIES = ["uart"]
+
+UARTButton = uart_ns.class_("UARTButton", button.Button, uart.UARTDevice, cg.Component)
+
+
+CONFIG_SCHEMA = (
+    button.button_schema(UARTButton)
+    .extend(
+        {
+            cv.Required(CONF_DATA): validate_raw_data,
+        }
+    )
+    .extend(uart.UART_DEVICE_SCHEMA)
+    .extend(cv.COMPONENT_SCHEMA)
+)
+
+
+async def to_code(config):
+    var = await button.new_button(config)
+    await cg.register_component(var, config)
+    await uart.register_uart_device(var, config)
+
+    data = config[CONF_DATA]
+    if isinstance(data, bytes):
+        data = [HexInt(x) for x in data]
+    cg.add(var.set_data(data))

esphome/components/uart/button/uart_button.cpp

@@ -0,0 +1,17 @@
+#include "uart_button.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace uart {
+
+static const char *const TAG = "uart.button";
+
+void UARTButton::press_action() {
+  ESP_LOGD(TAG, "'%s': Sending data...", this->get_name().c_str());
+  this->write_array(this->data_.data(), this->data_.size());
+}
+
+void UARTButton::dump_config() { LOG_BUTTON("", "UART Button", this); }
+
+}  // namespace uart
+}  // namespace esphome

esphome/components/uart/button/uart_button.h

@@ -0,0 +1,24 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/components/uart/uart.h"
+#include "esphome/components/button/button.h"
+
+#include <vector>
+
+namespace esphome {
+namespace uart {
+
+class UARTButton : public button::Button, public UARTDevice, public Component {
+ public:
+  void set_data(const std::vector<uint8_t> &data) { this->data_ = data; }
+
+  void dump_config() override;
+
+ protected:
+  void press_action() override;
+  std::vector<uint8_t> data_;
+};
+
+}  // namespace uart
+}  // namespace esphome

tests/test1.yaml

@@ -3504,6 +3504,10 @@ button:
       name: "restart"
     query_params:
       name: query params
+  - platform: uart
+    uart_id: uart_0
+    name: UART button
+    data: "Pressed\r\n"
 
 ld2410:
   id: my_ld2410