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ccffbfd3ae
Co-authored-by: Jimmy Hedman <jimmy.hedman@gmail.com> Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/core/defines.h"
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#include "esphome/core/hal.h"
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#include "esphome/core/helpers.h"
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#ifdef USE_SPI
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#include "esphome/components/spi/spi.h"
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#endif
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#include <vector>
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namespace esphome {
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namespace sn74hc595 {
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class SN74HC595Component : public Component {
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public:
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SN74HC595Component() = default;
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void setup() override = 0;
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float get_setup_priority() const override;
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void dump_config() override;
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void set_latch_pin(GPIOPin *pin) { this->latch_pin_ = pin; }
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void set_oe_pin(GPIOPin *pin) {
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this->oe_pin_ = pin;
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this->have_oe_pin_ = true;
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}
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void set_sr_count(uint8_t count) {
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this->sr_count_ = count;
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this->output_bytes_.resize(count);
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}
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protected:
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friend class SN74HC595GPIOPin;
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void digital_write_(uint16_t pin, bool value);
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virtual void write_gpio();
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void pre_setup_();
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void post_setup_();
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GPIOPin *latch_pin_;
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GPIOPin *oe_pin_;
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uint8_t sr_count_;
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bool have_oe_pin_{false};
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std::vector<uint8_t> output_bytes_;
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};
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/// Helper class to expose a SC74HC595 pin as an internal output GPIO pin.
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class SN74HC595GPIOPin : public GPIOPin, public Parented<SN74HC595Component> {
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public:
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void setup() override {}
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void pin_mode(gpio::Flags flags) override {}
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bool digital_read() override { return false; }
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void digital_write(bool value) override;
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std::string dump_summary() const override;
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void set_pin(uint16_t pin) { pin_ = pin; }
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void set_inverted(bool inverted) { inverted_ = inverted; }
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protected:
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uint16_t pin_;
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bool inverted_;
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};
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class SN74HC595GPIOComponent : public SN74HC595Component {
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public:
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void setup() override;
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void set_data_pin(GPIOPin *pin) { data_pin_ = pin; }
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void set_clock_pin(GPIOPin *pin) { clock_pin_ = pin; }
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protected:
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void write_gpio() override;
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GPIOPin *data_pin_;
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GPIOPin *clock_pin_;
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};
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#ifdef USE_SPI
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class SN74HC595SPIComponent : public SN74HC595Component,
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public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
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spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_4MHZ> {
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public:
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void setup() override;
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protected:
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void write_gpio() override;
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};
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#endif
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} // namespace sn74hc595
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} // namespace esphome
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