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116 lines
3.0 KiB
C++
116 lines
3.0 KiB
C++
#pragma once
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#include "esphome/components/i2c/i2c.h"
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#include "esphome/core/component.h"
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namespace esphome {
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namespace emc2101 {
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/** Enum listing all DAC conversion rates for the EMC2101.
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*
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* Specific values of the enum constants are register values taken from the EMC2101 datasheet.
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*/
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enum Emc2101DACConversionRate {
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EMC2101_DAC_1_EVERY_16_S,
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EMC2101_DAC_1_EVERY_8_S,
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EMC2101_DAC_1_EVERY_4_S,
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EMC2101_DAC_1_EVERY_2_S,
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EMC2101_DAC_1_EVERY_SECOND,
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EMC2101_DAC_2_EVERY_SECOND,
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EMC2101_DAC_4_EVERY_SECOND,
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EMC2101_DAC_8_EVERY_SECOND,
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EMC2101_DAC_16_EVERY_SECOND,
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EMC2101_DAC_32_EVERY_SECOND,
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};
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/// This class includes support for the EMC2101 i2c fan controller.
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/// The device has an output (PWM or DAC) and several sensors and this
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/// class is for the EMC2101 configuration.
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class Emc2101Component : public Component, public i2c::I2CDevice {
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public:
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/** Sets the mode of the output.
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*
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* @param dac_mode false for PWM output and true for DAC mode.
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*/
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void set_dac_mode(bool dac_mode) {
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this->dac_mode_ = dac_mode;
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this->max_output_value_ = 63;
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}
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/** Sets the PWM resolution.
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*
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* @param resolution the PWM resolution.
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*/
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void set_pwm_resolution(uint8_t resolution) {
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this->pwm_resolution_ = resolution;
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this->max_output_value_ = 2 * resolution;
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}
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/** Sets the PWM divider used to derive the PWM frequency.
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*
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* @param divider The PWM divider.
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*/
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void set_pwm_divider(uint8_t divider) { this->pwm_divider_ = divider; }
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/** Sets the DAC conversion rate (how many conversions per second).
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*
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* @param conversion_rate The DAC conversion rate.
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*/
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void set_dac_conversion_rate(Emc2101DACConversionRate conversion_rate) {
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this->dac_conversion_rate_ = conversion_rate;
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}
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/** Inverts the polarity of the Fan output.
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*
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* @param inverted Invert or not the Fan output.
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*/
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void set_inverted(bool inverted) { this->inverted_ = inverted; }
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/** Sets the Fan output duty cycle
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*
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* @param value The duty cycle value, from 0.0f to 1.0f.
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*/
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void set_duty_cycle(float value);
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/** Gets the Fan output duty cycle
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*
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* @return The duty cycle percentage from 0.0f to 1.0f.
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*/
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float get_duty_cycle();
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/** Gets the internal temperature sensor reading.
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*
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* @return The temperature in degrees celsius.
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*/
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float get_internal_temperature();
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/** Gets the external temperature sensor reading.
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*
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* @return The temperature in degrees celsius.
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*/
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float get_external_temperature();
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/** Gets the tachometer speed sensor reading.
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*
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* @return The fan speed in RPMs.
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*/
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float get_speed();
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/** Used by ESPHome framework. */
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void setup() override;
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/** Used by ESPHome framework. */
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void dump_config() override;
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/** Used by ESPHome framework. */
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float get_setup_priority() const override;
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bool dac_mode_{false};
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bool inverted_{false};
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uint8_t max_output_value_;
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uint8_t pwm_resolution_;
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uint8_t pwm_divider_;
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Emc2101DACConversionRate dac_conversion_rate_;
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};
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} // namespace emc2101
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} // namespace esphome
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