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[hbridge] Move light pin switching to loop (#15615)

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This commit is contained in:
Jesse Hills
2026-04-10 14:02:49 +12:00
parent c85a062e23
commit e4ee2b7c04
2 changed files with 34 additions and 20 deletions
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2
esphome/components/hbridge/light/__init__.py
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@@ -8,7 +8,7 @@ from .. import hbridge_ns
CODEOWNERS = ["@DotNetDann"]
HBridgeLightOutput = hbridge_ns.class_(
"HBridgeLightOutput", cg.PollingComponent, light.LightOutput
"HBridgeLightOutput", cg.Component, light.LightOutput
)
CONFIG_SCHEMA = light.RGB_LIGHT_SCHEMA.extend(

52
esphome/components/hbridge/light/hbridge_light_output.h
View File

@@ -1,20 +1,17 @@
#pragma once
#include "esphome/core/component.h"
#include "esphome/components/output/float_output.h"
#include "esphome/components/light/light_output.h"
#include "esphome/core/log.h"
#include "esphome/components/output/float_output.h"
#include "esphome/core/component.h"
#include "esphome/core/helpers.h"
namespace esphome {
namespace hbridge {
// Using PollingComponent as the updates are more consistent and reduces flickering
class HBridgeLightOutput : public PollingComponent, public light::LightOutput {
class HBridgeLightOutput : public Component, public light::LightOutput {
public:
HBridgeLightOutput() : PollingComponent(1) {}
void set_pina_pin(output::FloatOutput *pina_pin) { pina_pin_ = pina_pin; }
void set_pinb_pin(output::FloatOutput *pinb_pin) { pinb_pin_ = pinb_pin; }
void set_pina_pin(output::FloatOutput *pina_pin) { this->pina_pin_ = pina_pin; }
void set_pinb_pin(output::FloatOutput *pinb_pin) { this->pinb_pin_ = pinb_pin; }
light::LightTraits get_traits() override {
auto traits = light::LightTraits();
@@ -24,16 +21,16 @@ class HBridgeLightOutput : public PollingComponent, public light::LightOutput {
return traits;
}
void setup() override { this->forward_direction_ = false; }
void setup() override { this->disable_loop(); }
void update() override {
// This method runs around 60 times per second
// We cannot do the PWM ourselves so we are reliant on the hardware PWM
if (!this->forward_direction_) { // First LED Direction
void loop() override {
// Only called when both channels are active — alternate H-bridge direction
// each iteration to multiplex cold and warm white.
if (!this->forward_direction_) {
this->pina_pin_->set_level(this->pina_duty_);
this->pinb_pin_->set_level(0);
this->forward_direction_ = true;
} else { // Second LED Direction
} else {
this->pina_pin_->set_level(0);
this->pinb_pin_->set_level(this->pinb_duty_);
this->forward_direction_ = false;
@@ -43,15 +40,32 @@ class HBridgeLightOutput : public PollingComponent, public light::LightOutput {
float get_setup_priority() const override { return setup_priority::HARDWARE; }
void write_state(light::LightState *state) override {
state->current_values_as_cwww(&this->pina_duty_, &this->pinb_duty_, false);
float new_pina, new_pinb;
state->current_values_as_cwww(&new_pina, &new_pinb, false);
this->pina_duty_ = new_pina;
this->pinb_duty_ = new_pinb;
if (new_pina != 0.0f && new_pinb != 0.0f) {
// Both channels active — need loop to alternate H-bridge direction
this->high_freq_.start();
this->enable_loop();
} else {
// Zero or one channel active — drive pins directly, no multiplexing needed
this->high_freq_.stop();
this->disable_loop();
this->pina_pin_->set_level(new_pina);
this->pinb_pin_->set_level(new_pinb);
}
}
protected:
output::FloatOutput *pina_pin_;
output::FloatOutput *pinb_pin_;
float pina_duty_ = 0;
float pinb_duty_ = 0;
bool forward_direction_ = false;
float pina_duty_{0};
float pinb_duty_{0};
bool forward_direction_{false};
HighFrequencyLoopRequester high_freq_;
};
} // namespace hbridge