Max Regan
dedcb5af71
* Split out SPI and display (a little) * Use more of the common Macros * Remove wasted bytes from notomono font * Create a mock "menu"
74 lines
2.2 KiB
C
74 lines
2.2 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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#ifndef _DISPLAY_H_
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#define _DISPLAY_H_
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#include <stdint.h>
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#include <stddef.h>
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#include <assert.h>
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#include "spi.h"
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#include "font.h"
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#define DISPLAY_WIDTH 144
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#define DISPLAY_HEIGHT 168
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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 / 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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static_assert(sizeof(struct display_buffer) == (DISPLAY_WIDTH / 8 + 2) * DISPLAY_HEIGHT + 2,
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"The display buffer structure must be packed");
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struct display
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{
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SPI_TypeDef *spi;
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struct display_buffer buffer;
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};
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void display_init(struct display *display, SPI_TypeDef *spi);
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void display_set_bit(struct display *display, unsigned int x, unsigned int y, uint8_t val);
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void display_set_byte(struct display *display, unsigned int x, unsigned int y, uint8_t val);
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void display_char_at(struct display *display, int *x_off, int y_off, char c, const struct font *font);
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void display_string_at(struct display *display, int x_off, int y_off, const char *string, const struct font *font);
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void display_refresh(struct display *display);
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// TODO
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void display_clear(struct display *display);
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#endif
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