301 lines
11 KiB
C
301 lines
11 KiB
C
/*
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Copyright 2019 Ryan Caltabiano <https://github.com/XScorpion2>
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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 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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// an enumeration of the chips this driver supports
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#define OLED_IC_SSD1306 0
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#define OLED_IC_SH1106 1
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#if defined(OLED_DISPLAY_CUSTOM)
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// Expected user to implement the necessary defines
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#elif defined(OLED_DISPLAY_128X64)
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// Double height 128x64
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# ifndef OLED_DISPLAY_WIDTH
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# define OLED_DISPLAY_WIDTH 128
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# endif
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# ifndef OLED_DISPLAY_HEIGHT
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# define OLED_DISPLAY_HEIGHT 64
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# endif
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# ifndef OLED_MATRIX_SIZE
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# define OLED_MATRIX_SIZE (OLED_DISPLAY_HEIGHT / 8 * OLED_DISPLAY_WIDTH) // 1024 (compile time mathed)
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# endif
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# ifndef OLED_BLOCK_TYPE
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# define OLED_BLOCK_TYPE uint16_t
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# endif
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# ifndef OLED_BLOCK_COUNT
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# define OLED_BLOCK_COUNT (sizeof(OLED_BLOCK_TYPE) * 8) // 32 (compile time mathed)
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# endif
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# ifndef OLED_BLOCK_SIZE
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# define OLED_BLOCK_SIZE (OLED_MATRIX_SIZE / OLED_BLOCK_COUNT) // 32 (compile time mathed)
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# endif
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# ifndef OLED_COM_PINS
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# define OLED_COM_PINS COM_PINS_ALT
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# endif
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// For 90 degree rotation, we map our internal matrix to oled matrix using fixed arrays
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// The OLED writes to it's memory horizontally, starting top left, but our memory starts bottom left in this mode
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# ifndef OLED_SOURCE_MAP
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# define OLED_SOURCE_MAP \
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{ 0, 8, 16, 24, 32, 40, 48, 56 }
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# endif
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# ifndef OLED_TARGET_MAP
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# define OLED_TARGET_MAP \
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{ 56, 48, 40, 32, 24, 16, 8, 0 }
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# endif
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// If OLED_BLOCK_TYPE is uint32_t, these tables would look like:
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// #define OLED_SOURCE_MAP { 32, 40, 48, 56 }
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// #define OLED_TARGET_MAP { 24, 16, 8, 0 }
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// If OLED_BLOCK_TYPE is uint16_t, these tables would look like:
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// #define OLED_SOURCE_MAP { 0, 8, 16, 24, 32, 40, 48, 56 }
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// #define OLED_TARGET_MAP { 56, 48, 40, 32, 24, 16, 8, 0 }
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// If OLED_BLOCK_TYPE is uint8_t, these tables would look like:
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// #define OLED_SOURCE_MAP { 0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120 }
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// #define OLED_TARGET_MAP { 56, 120, 48, 112, 40, 104, 32, 96, 24, 88, 16, 80, 8, 72, 0, 64 }
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#else // defined(OLED_DISPLAY_128X64)
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// Default 128x32
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# ifndef OLED_DISPLAY_WIDTH
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# define OLED_DISPLAY_WIDTH 128
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# endif
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# ifndef OLED_DISPLAY_HEIGHT
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# define OLED_DISPLAY_HEIGHT 32
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# endif
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# ifndef OLED_MATRIX_SIZE
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# define OLED_MATRIX_SIZE (OLED_DISPLAY_HEIGHT / 8 * OLED_DISPLAY_WIDTH) // 512 (compile time mathed)
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# endif
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# ifndef OLED_BLOCK_TYPE
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# define OLED_BLOCK_TYPE uint16_t // Type to use for segmenting the oled display for smart rendering, use unsigned types only
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# endif
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# ifndef OLED_BLOCK_COUNT
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# define OLED_BLOCK_COUNT (sizeof(OLED_BLOCK_TYPE) * 8) // 16 (compile time mathed)
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# endif
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# ifndef OLED_BLOCK_SIZE
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# define OLED_BLOCK_SIZE (OLED_MATRIX_SIZE / OLED_BLOCK_COUNT) // 32 (compile time mathed)
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# endif
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# ifndef OLED_COM_PINS
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# define OLED_COM_PINS COM_PINS_SEQ
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# endif
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// For 90 degree rotation, we map our internal matrix to oled matrix using fixed arrays
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// The OLED writes to it's memory horizontally, starting top left, but our memory starts bottom left in this mode
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# ifndef OLED_SOURCE_MAP
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# define OLED_SOURCE_MAP \
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{ 0, 8, 16, 24 }
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# endif
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# ifndef OLED_TARGET_MAP
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# define OLED_TARGET_MAP \
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{ 24, 16, 8, 0 }
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# endif
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// If OLED_BLOCK_TYPE is uint8_t, these tables would look like:
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// #define OLED_SOURCE_MAP { 0, 8, 16, 24, 32, 40, 48, 56 }
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// #define OLED_TARGET_MAP { 48, 32, 16, 0, 56, 40, 24, 8 }
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#endif // defined(OLED_DISPLAY_CUSTOM)
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#if !defined(OLED_IC)
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# define OLED_IC OLED_IC_SSD1306
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#endif
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// the column address corresponding to the first column in the display hardware
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#if !defined(OLED_COLUMN_OFFSET)
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# define OLED_COLUMN_OFFSET 0
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#endif
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// Address to use for the i2c oled communication
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#if !defined(OLED_DISPLAY_ADDRESS)
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# define OLED_DISPLAY_ADDRESS 0x3C
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#endif
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// Custom font file to use
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#if !defined(OLED_FONT_H)
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# define OLED_FONT_H "glcdfont.c"
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#endif
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// unsigned char value of the first character in the font file
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#if !defined(OLED_FONT_START)
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# define OLED_FONT_START 0
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#endif
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// unsigned char value of the last character in the font file
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#if !defined(OLED_FONT_END)
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# define OLED_FONT_END 223
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#endif
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// Font render width
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#if !defined(OLED_FONT_WIDTH)
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# define OLED_FONT_WIDTH 6
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#endif
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// Font render height
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#if !defined(OLED_FONT_HEIGHT)
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# define OLED_FONT_HEIGHT 8
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#endif
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#if !defined(OLED_TIMEOUT)
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# if defined(OLED_DISABLE_TIMEOUT)
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# define OLED_TIMEOUT 0
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# else
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# define OLED_TIMEOUT 60000
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# endif
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#endif
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#if !defined(OLED_I2C_TIMEOUT)
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# define OLED_I2C_TIMEOUT 100
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#endif
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typedef struct __attribute__((__packed__)) {
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uint8_t *current_element;
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uint16_t remaining_element_count;
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} oled_buffer_reader_t;
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// OLED Rotation enum values are flags
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typedef enum {
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OLED_ROTATION_0 = 0,
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OLED_ROTATION_90 = 1,
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OLED_ROTATION_180 = 2,
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OLED_ROTATION_270 = 3, // OLED_ROTATION_90 | OLED_ROTATION_180
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} oled_rotation_t;
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// Initialize the oled display, rotating the rendered output based on the define passed in.
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// Returns true if the OLED was initialized successfully
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bool oled_init(oled_rotation_t rotation);
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// Called at the start of oled_init, weak function overridable by the user
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// rotation - the value passed into oled_init
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// Return new oled_rotation_t if you want to override default rotation
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oled_rotation_t oled_init_user(oled_rotation_t rotation);
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// Clears the display buffer, resets cursor position to 0, and sets the buffer to dirty for rendering
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void oled_clear(void);
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// Renders the dirty chunks of the buffer to oled display
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void oled_render(void);
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// Moves cursor to character position indicated by column and line, wraps if out of bounds
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// Max column denoted by 'oled_max_chars()' and max lines by 'oled_max_lines()' functions
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void oled_set_cursor(uint8_t col, uint8_t line);
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// Advances the cursor to the next page, writing ' ' if true
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// Wraps to the begining when out of bounds
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void oled_advance_page(bool clearPageRemainder);
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// Moves the cursor forward 1 character length
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// Advance page if there is not enough room for the next character
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// Wraps to the begining when out of bounds
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void oled_advance_char(void);
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// Writes a single character to the buffer at current cursor position
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// Advances the cursor while writing, inverts the pixels if true
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// Main handler that writes character data to the display buffer
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void oled_write_char(const char data, bool invert);
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// Writes a string to the buffer at current cursor position
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// Advances the cursor while writing, inverts the pixels if true
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void oled_write(const char *data, bool invert);
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// Writes a string to the buffer at current cursor position
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// Advances the cursor while writing, inverts the pixels if true
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// Advances the cursor to the next page, wiring ' ' to the remainder of the current page
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void oled_write_ln(const char *data, bool invert);
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// Pans the buffer to the right (or left by passing true) by moving contents of the buffer
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void oled_pan(bool left);
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// Returns a pointer to the requested start index in the buffer plus remaining
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// buffer length as struct
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oled_buffer_reader_t oled_read_raw(uint16_t start_index);
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void oled_write_raw(const char *data, uint16_t size);
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void oled_write_raw_byte(const char data, uint16_t index);
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// Sets a specific pixel on or off
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// Coordinates start at top-left and go right and down for positive x and y
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void oled_write_pixel(uint8_t x, uint8_t y, bool on);
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#if defined(__AVR__)
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// Writes a PROGMEM string to the buffer at current cursor position
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// Advances the cursor while writing, inverts the pixels if true
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// Remapped to call 'void oled_write(const char *data, bool invert);' on ARM
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void oled_write_P(const char *data, bool invert);
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// Writes a PROGMEM string to the buffer at current cursor position
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// Advances the cursor while writing, inverts the pixels if true
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// Advances the cursor to the next page, wiring ' ' to the remainder of the current page
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// Remapped to call 'void oled_write_ln(const char *data, bool invert);' on ARM
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void oled_write_ln_P(const char *data, bool invert);
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void oled_write_raw_P(const char *data, uint16_t size);
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#else
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// Writes a string to the buffer at current cursor position
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// Advances the cursor while writing, inverts the pixels if true
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# define oled_write_P(data, invert) oled_write(data, invert)
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// Writes a string to the buffer at current cursor position
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// Advances the cursor while writing, inverts the pixels if true
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// Advances the cursor to the next page, wiring ' ' to the remainder of the current page
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# define oled_write_ln_P(data, invert) oled_write(data, invert)
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# define oled_write_raw_P(data, size) oled_write_raw(data, size)
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#endif // defined(__AVR__)
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// Can be used to manually turn on the screen if it is off
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// Returns true if the screen was on or turns on
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bool oled_on(void);
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// Can be used to manually turn off the screen if it is on
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// Returns true if the screen was off or turns off
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bool oled_off(void);
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// Returns true if the oled is currently on, false if it is
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// not
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bool is_oled_on(void);
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// Basically it's oled_render, but with timeout management and oled_task_user calling!
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void oled_task(void);
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// Called at the start of oled_task, weak function overridable by the user
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void oled_task_user(void);
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// Set the specific 8 lines rows of the screen to scroll.
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// 0 is the default for start, and 7 for end, which is the entire
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// height of the screen. For 128x32 screens, rows 4-7 are not used.
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void oled_scroll_set_area(uint8_t start_line, uint8_t end_line);
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// Sets scroll speed, 0-7, fastest to slowest. Default is three.
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// Does not take effect until scrolling is either started or restarted
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// the ssd1306 supports 8 speeds with the delay
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// listed below betwen each frame of the scrolling effect
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// 0=2, 1=3, 2=4, 3=5, 4=25, 5=64, 6=128, 7=256
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void oled_scroll_set_speed(uint8_t speed);
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// Scrolls the entire display right
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// Returns true if the screen was scrolling or starts scrolling
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// NOTE: display contents cannot be changed while scrolling
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bool oled_scroll_right(void);
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// Scrolls the entire display left
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// Returns true if the screen was scrolling or starts scrolling
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// NOTE: display contents cannot be changed while scrolling
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bool oled_scroll_left(void);
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// Turns off display scrolling
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// Returns true if the screen was not scrolling or stops scrolling
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bool oled_scroll_off(void);
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// Returns the maximum number of characters that will fit on a line
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uint8_t oled_max_chars(void);
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// Returns the maximum number of lines that will fit on the oled
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uint8_t oled_max_lines(void);
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