allow using a binary output for the status led (#4532)

* allow using a binary output for the status led

* lint

* output status as well

* simplify

---------

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

esphome/components/status_led/light/__init__.py

@@ -1,26 +1,35 @@
 from esphome import pins
 import esphome.codegen as cg
 import esphome.config_validation as cv
-from esphome.components import light
+from esphome.components import light, output
-from esphome.const import CONF_OUTPUT_ID, CONF_PIN
+from esphome.const import CONF_OUTPUT, CONF_OUTPUT_ID, CONF_PIN
 from .. import status_led_ns
 
+AUTO_LOAD = ["output"]
+
 StatusLEDLightOutput = status_led_ns.class_(
     "StatusLEDLightOutput", light.LightOutput, cg.Component
 )
 
-CONFIG_SCHEMA = light.BINARY_LIGHT_SCHEMA.extend(
+CONFIG_SCHEMA = cv.All(
-    {
+    light.BINARY_LIGHT_SCHEMA.extend(
-        cv.GenerateID(CONF_OUTPUT_ID): cv.declare_id(StatusLEDLightOutput),
+        {
-        cv.Required(CONF_PIN): pins.gpio_output_pin_schema,
+            cv.GenerateID(CONF_OUTPUT_ID): cv.declare_id(StatusLEDLightOutput),
-    }
+            cv.Optional(CONF_PIN): pins.gpio_output_pin_schema,
+            cv.Optional(CONF_OUTPUT): cv.use_id(output.BinaryOutput),
+        }
+    ),
+    cv.has_at_least_one_key(CONF_PIN, CONF_OUTPUT),
 )
 
 
 async def to_code(config):
     var = cg.new_Pvariable(config[CONF_OUTPUT_ID])
-    pin = await cg.gpio_pin_expression(config[CONF_PIN])
+    if CONF_PIN in config:
-    cg.add(var.set_pin(pin))
+        pin = await cg.gpio_pin_expression(config[CONF_PIN])
+        cg.add(var.set_pin(pin))
+    if CONF_OUTPUT in config:
+        out = await cg.get_variable(config[CONF_OUTPUT])
+        cg.add(var.set_output(out))
     await cg.register_component(var, config)
-    # cg.add(cg.App.register_component(var))
     await light.register_light(var, config)

esphome/components/status_led/light/status_led_light.cpp

@@ -15,10 +15,10 @@ void StatusLEDLightOutput::loop() {
   }
 
   if ((new_state & STATUS_LED_ERROR) != 0u) {
-    this->pin_->digital_write(millis() % 250u < 150u);
+    this->output_state_(millis() % 250u < 150u);
     this->last_app_state_ = new_state;
   } else if ((new_state & STATUS_LED_WARNING) != 0u) {
-    this->pin_->digital_write(millis() % 1500u < 250u);
+    this->output_state_(millis() % 1500u < 250u);
     this->last_app_state_ = new_state;
   } else if (new_state != this->last_app_state_) {
     // if no error/warning -> restore light state or turn off
@@ -26,17 +26,16 @@ void StatusLEDLightOutput::loop() {
 
     if (lightstate_)
       lightstate_->current_values_as_binary(&state);
-
-    this->pin_->digital_write(state);
-    this->last_app_state_ = new_state;
-
     ESP_LOGD(TAG, "Restoring light state %s", ONOFF(state));
+
+    this->output_state_(state);
+    this->last_app_state_ = new_state;
   }
 }
 
 void StatusLEDLightOutput::setup_state(light::LightState *state) {
   lightstate_ = state;
-  ESP_LOGD(TAG, "'%s': Setting initital state", state->get_name().c_str());
+  ESP_LOGD(TAG, "'%s': Setting initial state", state->get_name().c_str());
   this->write_state(state);
 }
 
@@ -47,16 +46,18 @@ void StatusLEDLightOutput::write_state(light::LightState *state) {
   // if in warning/error, don't overwrite the status_led
   // once it is back to OK, the loop will restore the state
   if ((App.get_app_state() & (STATUS_LED_ERROR | STATUS_LED_WARNING)) == 0u) {
-    this->pin_->digital_write(binary);
     ESP_LOGD(TAG, "'%s': Setting state %s", state->get_name().c_str(), ONOFF(binary));
+    this->output_state_(binary);
   }
 }
 
 void StatusLEDLightOutput::setup() {
   ESP_LOGCONFIG(TAG, "Setting up Status LED...");
 
-  this->pin_->setup();
+  if (this->pin_ != nullptr) {
-  this->pin_->digital_write(false);
+    this->pin_->setup();
+    this->pin_->digital_write(false);
+  }
 }
 
 void StatusLEDLightOutput::dump_config() {
@@ -64,5 +65,12 @@ void StatusLEDLightOutput::dump_config() {
   LOG_PIN("  Pin: ", this->pin_);
 }
 
+void StatusLEDLightOutput::output_state_(bool state) {
+  if (this->pin_ != nullptr)
+    this->pin_->digital_write(state);
+  if (this->output_ != nullptr)
+    this->output_->set_state(state);
+}
+
 }  // namespace status_led
 }  // namespace esphome

esphome/components/status_led/light/status_led_light.h

@@ -3,6 +3,7 @@
 #include "esphome/core/component.h"
 #include "esphome/core/hal.h"
 #include "esphome/components/light/light_output.h"
+#include "esphome/components/output/binary_output.h"
 
 namespace esphome {
 namespace status_led {
@@ -10,6 +11,7 @@ namespace status_led {
 class StatusLEDLightOutput : public light::LightOutput, public Component {
  public:
   void set_pin(GPIOPin *pin) { pin_ = pin; }
+  void set_output(output::BinaryOutput *output) { output_ = output; }
 
   light::LightTraits get_traits() override {
     auto traits = light::LightTraits();
@@ -31,9 +33,11 @@ class StatusLEDLightOutput : public light::LightOutput, public Component {
   float get_loop_priority() const override { return 50.0f; }
 
  protected:
-  GPIOPin *pin_;
+  GPIOPin *pin_{nullptr};
+  output::BinaryOutput *output_{nullptr};
   light::LightState *lightstate_{};
   uint32_t last_app_state_{0xFFFF};
+  void output_state_(bool state);
 };
 
 }  // namespace status_led