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- #pragma once
-
- #include <stdbool.h>
- #include <stdio.h>
- #include "config.h"
-
- enum ssd1306_cmds {
- DisplayOff = 0xAE,
- DisplayOn = 0xAF,
-
- SetContrast = 0x81,
- DisplayAllOnResume = 0xA4,
-
- DisplayAllOn = 0xA5,
- NormalDisplay = 0xA6,
- InvertDisplay = 0xA7,
- SetDisplayOffset = 0xD3,
- SetComPins = 0xda,
- SetVComDetect = 0xdb,
- SetDisplayClockDiv = 0xD5,
- SetPreCharge = 0xd9,
- SetMultiPlex = 0xa8,
- SetLowColumn = 0x00,
- SetHighColumn = 0x10,
- SetStartLine = 0x40,
-
- SetMemoryMode = 0x20,
- ColumnAddr = 0x21,
- PageAddr = 0x22,
-
- ComScanInc = 0xc0,
- ComScanDec = 0xc8,
- SegRemap = 0xa0,
- SetChargePump = 0x8d,
- ExternalVcc = 0x01,
- SwitchCapVcc = 0x02,
-
- ActivateScroll = 0x2f,
- DeActivateScroll = 0x2e,
- SetVerticalScrollArea = 0xa3,
- RightHorizontalScroll = 0x26,
- LeftHorizontalScroll = 0x27,
- VerticalAndRightHorizontalScroll = 0x29,
- VerticalAndLeftHorizontalScroll = 0x2a,
- };
-
- // Controls the SSD1306 128x32 OLED display via i2c
-
- #ifndef SSD1306_ADDRESS
- # define SSD1306_ADDRESS 0x3C
- #endif
-
- #define DisplayHeight 32
- #define DisplayWidth 128
-
- #define FontHeight 8
- #define FontWidth 6
-
- #define MatrixRows (DisplayHeight / FontHeight)
- #define MatrixCols (DisplayWidth / FontWidth)
-
- struct CharacterMatrix {
- uint8_t display[MatrixRows][MatrixCols];
- uint8_t *cursor;
- bool dirty;
- };
-
- extern struct CharacterMatrix display;
-
- bool iota_gfx_init(void);
- void iota_gfx_task(void);
- bool iota_gfx_off(void);
- bool iota_gfx_on(void);
- void iota_gfx_flush(void);
- void iota_gfx_write_char(uint8_t c);
- void iota_gfx_write(const char *data);
- void iota_gfx_write_P(const char *data);
- void iota_gfx_clear_screen(void);
-
- void iota_gfx_task_user(void);
-
- void matrix_clear(struct CharacterMatrix *matrix);
- void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c);
- void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c);
- void matrix_write(struct CharacterMatrix *matrix, const char *data);
- void matrix_write_P(struct CharacterMatrix *matrix, const char *data);
- void matrix_render(struct CharacterMatrix *matrix);
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