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2fac813f18
Co-authored-by: Keith Burzinski <kbx81x@gmail.com> Co-authored-by: Tudor Sandu <tm.sandu@gmail.com> Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>
94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
#pragma once
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#include "esphome/components/display/display_buffer.h"
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#include "esphome/components/spi/spi.h"
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#include "esphome/components/split_buffer/split_buffer.h"
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#include "esphome/core/component.h"
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#include <queue>
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namespace esphome::epaper_spi {
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enum class EPaperState : uint8_t {
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IDLE,
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UPDATE,
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RESET,
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INITIALISE,
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TRANSFER_DATA,
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POWER_ON,
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REFRESH_SCREEN,
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POWER_OFF,
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DEEP_SLEEP,
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};
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static const uint8_t MAX_TRANSFER_TIME = 10; // Transfer in 10ms blocks to allow the loop to run
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class EPaperBase : public display::DisplayBuffer,
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public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW, spi::CLOCK_PHASE_LEADING,
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spi::DATA_RATE_2MHZ> {
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public:
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EPaperBase(const uint8_t *init_sequence, const size_t init_sequence_length)
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: init_sequence_length_(init_sequence_length), init_sequence_(init_sequence) {}
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void set_dc_pin(GPIOPin *dc_pin) { dc_pin_ = dc_pin; }
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float get_setup_priority() const override;
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void set_reset_pin(GPIOPin *reset) { this->reset_pin_ = reset; }
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void set_busy_pin(GPIOPin *busy) { this->busy_pin_ = busy; }
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void set_reset_duration(uint32_t reset_duration) { this->reset_duration_ = reset_duration; }
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void command(uint8_t value);
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void data(uint8_t value);
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void cmd_data(const uint8_t *data);
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void update() override;
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void loop() override;
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void setup() override;
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void on_safe_shutdown() override;
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protected:
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bool is_idle_();
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void setup_pins_();
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virtual void reset();
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void initialise_();
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bool init_buffer_(size_t buffer_length);
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virtual int get_width_controller() { return this->get_width_internal(); };
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virtual void deep_sleep() = 0;
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/**
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* Send data to the device via SPI
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* @return true if done, false if should be called next loop
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*/
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virtual bool transfer_data() = 0;
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virtual void refresh_screen() = 0;
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virtual void power_on() = 0;
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virtual void power_off() = 0;
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virtual uint32_t get_buffer_length() = 0;
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void start_command_();
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void end_command_();
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void start_data_();
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void end_data_();
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const size_t init_sequence_length_{0};
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size_t current_data_index_{0};
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uint32_t reset_duration_{200};
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uint32_t waiting_for_idle_last_print_{0};
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GPIOPin *dc_pin_;
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GPIOPin *busy_pin_{nullptr};
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GPIOPin *reset_pin_{nullptr};
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const uint8_t *init_sequence_{nullptr};
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bool waiting_for_idle_{false};
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split_buffer::SplitBuffer buffer_;
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std::queue<EPaperState> state_queue_{{EPaperState::IDLE}};
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};
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} // namespace esphome::epaper_spi
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