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64 lines
2.1 KiB
C++
64 lines
2.1 KiB
C++
#pragma once
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#include "esphome/core/component.h"
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#include "esphome/core/time.h"
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#include "esphome/components/spi/spi.h"
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namespace esphome {
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namespace max7219 {
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class MAX7219Component;
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using max7219_writer_t = std::function<void(MAX7219Component &)>;
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class MAX7219Component : public PollingComponent,
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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_1MHZ> {
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public:
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void set_writer(max7219_writer_t &&writer);
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void setup() override;
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void dump_config() override;
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void update() override;
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float get_setup_priority() const override;
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void display();
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void set_intensity(uint8_t intensity);
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void set_num_chips(uint8_t num_chips);
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void set_reverse(bool reverse) { this->reverse_ = reverse; };
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/// Evaluate the printf-format and print the result at the given position.
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uint8_t printf(uint8_t pos, const char *format, ...) __attribute__((format(printf, 3, 4)));
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/// Evaluate the printf-format and print the result at position 0.
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uint8_t printf(const char *format, ...) __attribute__((format(printf, 2, 3)));
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/// Print `str` at the given position.
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uint8_t print(uint8_t pos, const char *str);
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/// Print `str` at position 0.
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uint8_t print(const char *str);
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/// Evaluate the strftime-format and print the result at the given position.
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uint8_t strftime(uint8_t pos, const char *format, ESPTime time) __attribute__((format(strftime, 3, 0)));
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/// Evaluate the strftime-format and print the result at position 0.
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uint8_t strftime(const char *format, ESPTime time) __attribute__((format(strftime, 2, 0)));
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protected:
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void send_byte_(uint8_t a_register, uint8_t data);
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void send_to_all_(uint8_t a_register, uint8_t data);
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uint8_t intensity_{15}; // Intensity of the display from 0 to 15 (most)
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bool intensity_changed_{}; // True if we need to re-send the intensity
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uint8_t num_chips_{1};
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uint8_t *buffer_;
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bool reverse_{false};
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optional<max7219_writer_t> writer_{};
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};
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} // namespace max7219
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} // namespace esphome
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