mirror of
https://github.com/Threnklyn/esphome-dev.git
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phjr
3c9712d683
* add support for SN74HC595 shift register * fix linter errors * more linter reported issues fixed * hopefully last linter error cleanup * one more linter fix * looks like the linter is always keeping stuff for later, is this the final fix? * add test Co-authored-by: Guillermo Ruffino <glm.net@gmail.com>
56 lines
1.3 KiB
C++
56 lines
1.3 KiB
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/core/esphal.h"
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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;
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float get_setup_priority() const override;
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void dump_config() 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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void set_latch_pin(GPIOPin *pin) { latch_pin_ = pin; }
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void set_oe_pin(GPIOPin *pin) {
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oe_pin_ = pin;
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have_oe_pin_ = true;
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}
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void set_sr_count(uint8_t count) { sr_count_ = count; }
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protected:
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friend class SN74HC595GPIOPin;
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bool digital_read_(uint8_t pin);
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void digital_write_(uint8_t pin, bool value);
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bool write_gpio_();
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GPIOPin *data_pin_;
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GPIOPin *clock_pin_;
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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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uint32_t output_bits_{0x00};
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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 {
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public:
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SN74HC595GPIOPin(SN74HC595Component *parent, uint8_t pin, bool inverted = false);
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void setup() override;
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bool digital_read() override;
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void digital_write(bool value) override;
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protected:
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SN74HC595Component *parent_;
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};
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} // namespace sn74hc595
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} // namespace esphome
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