Add support for BP5758D LED driver (#4021)

esphome/components/bp5758d/bp5758d.h

@@ -0,0 +1,64 @@
+#pragma once
+
+#include "esphome/core/component.h"
+#include "esphome/core/hal.h"
+#include "esphome/components/output/float_output.h"
+#include <vector>
+
+namespace esphome {
+namespace bp5758d {
+
+class BP5758D : public Component {
+ public:
+  class Channel;
+
+  void set_data_pin(GPIOPin *data_pin) { data_pin_ = data_pin; }
+  void set_clock_pin(GPIOPin *clock_pin) { clock_pin_ = clock_pin; }
+
+  void setup() override;
+
+  void dump_config() override;
+
+  float get_setup_priority() const override { return setup_priority::HARDWARE; }
+
+  /// Send new values if they were updated.
+  void loop() override;
+
+  class Channel : public output::FloatOutput {
+   public:
+    void set_parent(BP5758D *parent) { parent_ = parent; }
+    void set_channel(uint8_t channel) { channel_ = channel; }
+    void set_current(uint8_t current) { current_ = current; }
+
+   protected:
+    void write_state(float state) override {
+      auto amount = static_cast<uint16_t>(state * 0x3FF);
+      // We're enforcing channels start at 1 to mach OUT1-OUT5, we must adjust
+      // to our 0-based array internally here by subtracting 1.
+      this->parent_->set_channel_value_(this->channel_ - 1, amount);
+      this->parent_->set_channel_current_(this->channel_ - 1, this->current_);
+    }
+
+    BP5758D *parent_;
+    uint8_t channel_;
+    uint8_t current_;
+  };
+
+ protected:
+  uint8_t correct_current_level_bits_(uint8_t current);
+  void set_channel_value_(uint8_t channel, uint16_t value);
+  void set_channel_current_(uint8_t channel, uint8_t current);
+  void write_bit_(bool value);
+  void write_byte_(uint8_t data);
+  void write_buffer_(uint8_t *buffer, uint8_t size);
+
+  GPIOPin *data_pin_;
+  GPIOPin *clock_pin_;
+  uint8_t update_channel_;
+  std::vector<uint8_t> channel_current_;
+  std::vector<uint16_t> pwm_amounts_;
+  bool update_{true};
+};
+
+}  // namespace bp5758d
+}  // namespace esphome