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96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
/*
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* @file display.h
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* Display library for ILI9481 display
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*
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* Copyright (C) 2018 Clyne Sullivan
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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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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/**
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* The screen's width, in pixels.
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*/
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#define LCD_WIDTH 480
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/**
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* The screen's height, in pixels.
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*/
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#define LCD_HEIGHT 320
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/**
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* Initializes the display. Must be called before other display use.
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*/
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void dsp_init(void);
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/**
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* Returns the color integer for the given RGB values.
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* Converts 8RGB to 5-6-5.
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* @param r red value, 0-255
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* @param g green value, 0-255
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* @param b blue value, 0-255
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* @return the 5-6-5 color value
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*/
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uint16_t dsp_color(uint8_t r, uint8_t g, uint8_t b);
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/**
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* Sets the direction of IO, for reading or writing to the screen.
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* @param mode INPUT or OUPUT (defined in gpio.h)
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*/
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void dsp_dmode(int mode);
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/**
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* Writes the command byte to the display.
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* @param data the command to write
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*/
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void dsp_write_cmd(uint8_t data);
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/**
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* Writes the data byte to the display.
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* @param data the data to write
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*/
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void dsp_write_data(uint8_t data);
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/**
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* Reads a byte of data from the display.
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* @return the data byte
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*/
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uint8_t dsp_read_data(void);
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/**
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* Selects the area of pixels to draw to, from (x1, y1) inclusive to (x2, y2)
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* exclusive.
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* @param x1 starting x coordinate
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* @param y1 starting y coordinate
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* @param x2 ending x coordinate
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* @param y2 ending y coordinate
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*/
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void dsp_set_addr(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2);
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/**
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* Selects the area of pixels to read from, in the range (x1, y1) inclusive to
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* (x2, y2) exclusive.
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* @param x1 starting x coordinate
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* @param y1 starting y coordinate
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* @param x2 ending x coordinate
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* @param y2 ending y coordinate
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*/
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void dsp_set_addr_read(uint16_t x1, uint16_t y1, uint16_t x2, uint16_t y2);
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#endif // DISPLAY_H_
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