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73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/components/output/float_output.h"
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#include "esphome/components/i2c/i2c.h"
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namespace esphome {
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namespace pca9685 {
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/// Inverts polarity of channel output signal
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extern const uint8_t PCA9685_MODE_INVERTED;
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/// Channel update happens upon ACK (post-set) rather than on STOP (endTransmission)
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extern const uint8_t PCA9685_MODE_OUTPUT_ONACK;
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/// Use a totem-pole (push-pull) style output rather than an open-drain structure.
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extern const uint8_t PCA9685_MODE_OUTPUT_TOTEM_POLE;
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/// For active low output enable, sets channel output to high-impedance state
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extern const uint8_t PCA9685_MODE_OUTNE_HIGHZ;
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/// Similarly, sets channel output to high if in totem-pole mode, otherwise
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extern const uint8_t PCA9685_MODE_OUTNE_LOW;
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class PCA9685Output;
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class PCA9685Channel : public output::FloatOutput {
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public:
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void set_channel(uint8_t channel) { channel_ = channel; }
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void set_parent(PCA9685Output *parent) { parent_ = parent; }
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protected:
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friend class PCA9685Output;
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void write_state(float state) override;
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uint8_t channel_;
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PCA9685Output *parent_;
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};
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/// PCA9685 float output component.
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class PCA9685Output : public Component, public i2c::I2CDevice {
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public:
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PCA9685Output(uint8_t mode = PCA9685_MODE_OUTPUT_ONACK | PCA9685_MODE_OUTPUT_TOTEM_POLE) : mode_(mode) {}
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void register_channel(PCA9685Channel *channel);
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void setup() override;
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void dump_config() override;
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float get_setup_priority() const override { return setup_priority::HARDWARE; }
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void loop() override;
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void set_extclk(bool extclk) { this->extclk_ = extclk; }
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void set_frequency(float frequency) { this->frequency_ = frequency; }
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protected:
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friend PCA9685Channel;
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void set_channel_value_(uint8_t channel, uint16_t value) {
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if (this->pwm_amounts_[channel] != value)
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this->update_ = true;
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this->pwm_amounts_[channel] = value;
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}
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float frequency_;
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uint8_t mode_;
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bool extclk_ = false;
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uint8_t min_channel_{0xFF};
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uint8_t max_channel_{0x00};
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uint16_t pwm_amounts_[16] = {
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0,
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};
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bool update_{true};
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};
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} // namespace pca9685
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} // namespace esphome
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