104 lines
3.4 KiB
C++
104 lines
3.4 KiB
C++
/*
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* Copyright (C) 2019 Max Regan
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#pragma once
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#include "Task.h"
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#include "SpiDriver.h"
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#include "font.h"
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namespace BSP {
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class DisplayDriver final : public Common::Schedule::Task {
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public:
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DisplayDriver(Common::Schedule::TaskScheduler &scheduler, SpiDriver &spi);
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/**
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* Common::Schedule::Task
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*/
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Common::ReturnCode init();
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Common::Schedule::NextTime execute() override;
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/**
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* DisplayDriver
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*/
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void set_bit(uint32_t x, uint32_t y, uint8_t val);
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uint8_t get_bit(uint32_t x, uint32_t y);
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void set_byte(uint32_t x, uint32_t y, uint8_t val);
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void char_at(uint32_t *x_off, uint32_t y_off, char c, const struct font *font);
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void string_at(uint32_t *x_off, uint32_t y_off,
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const char *string, const struct font *font);
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void draw_hline(uint32_t x, uint32_t y, uint32_t width);
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void refresh();
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void clear();
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inline uint32_t get_width() {
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return DISPLAY_WIDTH;
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}
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inline uint32_t get_height() {
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return DISPLAY_HEIGHT;
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}
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private:
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void buffer_init();
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void set_dirty(unsigned int y);
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const struct glyph *glyph_for_char(const struct font *font, char c);
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void clear_glyph_aligned(uint32_t x_off, uint32_t y_off,
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const struct font * font, const struct glyph *g);
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void clear_glyph_unaligned(uint32_t x_off, uint32_t y_off,
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const struct font * font, const struct glyph *g);
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void write_glyph_aligned(uint32_t x_off, uint32_t y_off,
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const struct font * font, const struct glyph *g);
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void write_glyph_unaligned(uint32_t x_off, uint32_t y_off,
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const struct font * font, const struct glyph *g);
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static constexpr uint32_t DISPLAY_WIDTH = 128;
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static constexpr uint32_t DISPLAY_HEIGHT = 128;
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static constexpr uint32_t BITS_PER_PIXEL = 3;
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struct display_line
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{
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uint8_t mode;
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uint8_t line;
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uint8_t data[DISPLAY_WIDTH * BITS_PER_PIXEL / 8];
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};
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struct display_buffer
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{
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struct display_line lines[DISPLAY_HEIGHT];
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uint16_t dummy;
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};
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Common::Schedule::TaskScheduler &m_scheduler;
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SpiDriver &m_spi;
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struct display_buffer m_buffer;
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bool m_is_dirty;
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uint8_t m_dirty_line_min;
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uint8_t m_dirty_line_max;
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};
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}
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