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author | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
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committer | Nick Brassel <nick@tzarc.org> | 2021-08-29 08:20:25 +1000 |
commit | f061ca497464fe85284906fb163a33eaee7a91ef (patch) | |
tree | 33ef1bfb529aed382e8526c607c4e18717f92571 /drivers/lcd/st7565.h | |
parent | ff65185dec6f97be1eb49f17cea526a0d0bbf3d6 (diff) | |
parent | 4bad375d7c09d949a9dcdd4feba147c9c7a67ec6 (diff) |
Breaking changes develop merge to master, 2021Q3 edition. (#14196)
Diffstat (limited to 'drivers/lcd/st7565.h')
-rw-r--r-- | drivers/lcd/st7565.h | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/drivers/lcd/st7565.h b/drivers/lcd/st7565.h new file mode 100644 index 0000000000..d453dbe6da --- /dev/null +++ b/drivers/lcd/st7565.h @@ -0,0 +1,219 @@ +/* +Copyright 2021 + +This program is free software: you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation, either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#pragma once + +#include <stdint.h> +#include <stdbool.h> + +#include "spi_master.h" + +#ifndef ST7565_DISPLAY_WIDTH +# define ST7565_DISPLAY_WIDTH 128 +#endif +#ifndef ST7565_DISPLAY_HEIGHT +# define ST7565_DISPLAY_HEIGHT 32 +#endif +#ifndef ST7565_MATRIX_SIZE +# define ST7565_MATRIX_SIZE (ST7565_DISPLAY_HEIGHT / 8 * ST7565_DISPLAY_WIDTH) // 1024 (compile time mathed) +#endif +#ifndef ST7565_BLOCK_TYPE +# define ST7565_BLOCK_TYPE uint16_t +#endif +#ifndef ST7565_BLOCK_COUNT +# define ST7565_BLOCK_COUNT (sizeof(ST7565_BLOCK_TYPE) * 8) // 32 (compile time mathed) +#endif +#ifndef ST7565_BLOCK_SIZE +# define ST7565_BLOCK_SIZE (ST7565_MATRIX_SIZE / ST7565_BLOCK_COUNT) // 32 (compile time mathed) +#endif + +// the column address corresponding to the first column in the display hardware +#if !defined(ST7565_COLUMN_OFFSET) +# define ST7565_COLUMN_OFFSET 0 +#endif + +// spi clock divisor +#if !defined(ST7565_SPI_CLK_DIVISOR) +# define ST7565_SPI_CLK_DIVISOR 4 +#endif + +// Custom font file to use +#if !defined(ST7565_FONT_H) +# define ST7565_FONT_H "glcdfont.c" +#endif +// unsigned char value of the first character in the font file +#if !defined(ST7565_FONT_START) +# define ST7565_FONT_START 0 +#endif +// unsigned char value of the last character in the font file +#if !defined(ST7565_FONT_END) +# define ST7565_FONT_END 223 +#endif +// Font render width +#if !defined(ST7565_FONT_WIDTH) +# define ST7565_FONT_WIDTH 6 +#endif +// Font render height +#if !defined(ST7565_FONT_HEIGHT) +# define ST7565_FONT_HEIGHT 8 +#endif +// Default contrast level +#if !defined(ST7565_CONTRAST) +# define ST7565_CONTRAST 32 +#endif + +#if !defined(ST7565_TIMEOUT) +# if defined(ST7565_DISABLE_TIMEOUT) +# define ST7565_TIMEOUT 0 +# else +# define ST7565_TIMEOUT 60000 +# endif +#endif + +#if !defined(ST7565_UPDATE_INTERVAL) && defined(SPLIT_KEYBOARD) +# define ST7565_UPDATE_INTERVAL 50 +#endif + +typedef struct __attribute__((__packed__)) { + uint8_t *current_element; + uint16_t remaining_element_count; +} display_buffer_reader_t; + +// Rotation enum values are flags +typedef enum { DISPLAY_ROTATION_0, DISPLAY_ROTATION_180 } display_rotation_t; + +// Initialize the display, rotating the rendered output based on the define passed in. +// Returns true if the display was initialized successfully +bool st7565_init(display_rotation_t rotation); + +// Called at the start of st7565_init, weak function overridable by the user +// rotation - the value passed into st7565_init +// Return new display_rotation_t if you want to override default rotation +display_rotation_t st7565_init_user(display_rotation_t rotation); + +// Clears the display buffer, resets cursor position to 0, and sets the buffer to dirty for rendering +void st7565_clear(void); + +// Renders the dirty chunks of the buffer to display +void st7565_render(void); + +// Moves cursor to character position indicated by column and line, wraps if out of bounds +// Max column denoted by 'st7565_max_chars()' and max lines by 'st7565_max_lines()' functions +void st7565_set_cursor(uint8_t col, uint8_t line); + +// Advances the cursor to the next page, writing ' ' if true +// Wraps to the begining when out of bounds +void st7565_advance_page(bool clearPageRemainder); + +// Moves the cursor forward 1 character length +// Advance page if there is not enough room for the next character +// Wraps to the begining when out of bounds +void st7565_advance_char(void); + +// Writes a single character to the buffer at current cursor position +// Advances the cursor while writing, inverts the pixels if true +// Main handler that writes character data to the display buffer +void st7565_write_char(const char data, bool invert); + +// Writes a string to the buffer at current cursor position +// Advances the cursor while writing, inverts the pixels if true +void st7565_write(const char *data, bool invert); + +// Writes a string to the buffer at current cursor position +// Advances the cursor while writing, inverts the pixels if true +// Advances the cursor to the next page, wiring ' ' to the remainder of the current page +void st7565_write_ln(const char *data, bool invert); + +// Pans the buffer to the right (or left by passing true) by moving contents of the buffer +// Useful for moving the screen in preparation for new drawing +void st7565_pan(bool left); + +// Returns a pointer to the requested start index in the buffer plus remaining +// buffer length as struct +display_buffer_reader_t st7565_read_raw(uint16_t start_index); + +// Writes a string to the buffer at current cursor position +void st7565_write_raw(const char *data, uint16_t size); + +// Writes a single byte into the buffer at the specified index +void st7565_write_raw_byte(const char data, uint16_t index); + +// Sets a specific pixel on or off +// Coordinates start at top-left and go right and down for positive x and y +void st7565_write_pixel(uint8_t x, uint8_t y, bool on); + +#if defined(__AVR__) +// Writes a PROGMEM string to the buffer at current cursor position +// Advances the cursor while writing, inverts the pixels if true +// Remapped to call 'void st7565_write(const char *data, bool invert);' on ARM +void st7565_write_P(const char *data, bool invert); + +// Writes a PROGMEM string to the buffer at current cursor position +// Advances the cursor while writing, inverts the pixels if true +// Advances the cursor to the next page, wiring ' ' to the remainder of the current page +// Remapped to call 'void st7565_write_ln(const char *data, bool invert);' on ARM +void st7565_write_ln_P(const char *data, bool invert); + +// Writes a PROGMEM string to the buffer at current cursor position +void st7565_write_raw_P(const char *data, uint16_t size); +#else +# define st7565_write_P(data, invert) st7565_write(data, invert) +# define st7565_write_ln_P(data, invert) st7565_write_ln(data, invert) +# define st7565_write_raw_P(data, size) st7565_write_raw(data, size) +#endif // defined(__AVR__) + +// Can be used to manually turn on the screen if it is off +// Returns true if the screen was on or turns on +bool st7565_on(void); + +// Called when st7565_on() turns on the screen, weak function overridable by the user +// Not called if the screen is already on +void st7565_on_user(void); + +// Can be used to manually turn off the screen if it is on +// Returns true if the screen was off or turns off +bool st7565_off(void); + +// Called when st7565_off() turns off the screen, weak function overridable by the user +// Not called if the screen is already off +void st7565_off_user(void); + +// Returns true if the screen is currently on, false if it is +// not +bool st7565_is_on(void); + +// Basically it's st7565_render, but with timeout management and st7565_task_user calling! +void st7565_task(void); + +// Called at the start of st7565_task, weak function overridable by the user +void st7565_task_user(void); + +// Inverts the display +// Returns true if the screen was or is inverted +bool st7565_invert(bool invert); + +// Returns the maximum number of characters that will fit on a line +uint8_t st7565_max_chars(void); + +// Returns the maximum number of lines that will fit on the display +uint8_t st7565_max_lines(void); + +void st7565_reset(void); + +spi_status_t st7565_send_cmd(uint8_t cmd); + +spi_status_t st7565_send_data(uint8_t *data, uint16_t length); |