108 lines
2.8 KiB
C
108 lines
2.8 KiB
C
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#ifndef OLED_H
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#define OLED_H
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#include "stdint.h"
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#include "stdbool.h"
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#include "stm8s.h"
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/*
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* Initialize OLED.
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*
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* Pinout:
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* SCK -> PC5 [spi]
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* MOSI -> PC6 [spi]
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* MISO -> PC7 [spi]
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* CS -> PC4
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* RES -> PC3
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* DC -> PD6
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*/
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struct SEGMENT
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{
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uint8_t fontWidth;
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uint8_t fontHeight;
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uint8_t fontSpacing;
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uint8_t rows;
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uint8_t cols;
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uint8_t width;
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uint8_t height;
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uint8_t *buffer;
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uint16_t bufferDepth;
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uint8_t page0;
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uint8_t clearChar;
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};
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bool oled_init(uint8_t vcs, bool reset);
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struct SEGMENT *oled_new_segment(uint8_t page0, uint8_t fontWidth, uint8_t fontHeight, uint8_t fontSpacing, uint8_t rows, uint8_t clearChar);
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bool oled_free_segment(struct SEGMENT *segment);
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bool oled_clear_segment(struct SEGMENT *segment);
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bool oled_display_segment(struct SEGMENT *segment);
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void oled_clear_display(void);
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void oled_invert_display(bool i);
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void oled_dim_display(bool dim);
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void oled_command_list(const uint8_t *c, uint8_t n);
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void oled_command1(uint8_t c);
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#if defined SSD1306_128_64
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#define OLED_LCDWIDTH 128
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#define OLED_LCDHEIGHT 64
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#define OLED_PIX_START 0
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#endif
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#if defined SSD1306_128_32
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#define OLED_LCDWIDTH 128
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#define OLED_LCDHEIGHT 32
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#define OLED_PIX_START 0
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#endif
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#if defined SH1106_128_64
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#define OLED_LCDWIDTH 128
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#define OLED_LCDHEIGHT 64
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#define OLED_PIX_START 2
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#endif
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#ifndef OLED_LCDWIDTH
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#define OLED_LCDWIDTH 128
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#define OLED_LCDHEIGHT 64
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#define OLED_PIX_START 0
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#endif
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#define SSD1306_BLACK 0 ///< Draw 'off' pixels
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#define SSD1306_WHITE 1 ///< Draw 'on' pixels
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#define SSD1306_INVERSE 2 ///< Invert pixels
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#define TRANSACTION_START \
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SPI_CR1 = SPI_CR1_MSTR | SPI_CR1_BR(0) | SPI_CR1_SPE; \
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PC_ODR &= ~PIN4;
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#define TRANSACTION_END \
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while ((SPI_SR & SPI_SR_BSY)) \
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; \
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PC_ODR |= PIN4; \
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SPI_CR1 &= ~SPI_CR1_SPE;
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#define OLED_MODE_COMMAND PD_ODR &= ~PIN6;
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#define OLED_MODE_DATA PD_ODR |= PIN6;
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#define SSD1306_EXTERNALVCC 0x01 ///< External display voltage source
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#define SSD1306_SWITCHCAPVCC 0x02 ///< Gen. display voltage from 3.3V
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#define SSD1306_MEMORYMODE 0x20
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#define SSD1306_COLUMNADDR 0x21
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#define SSD1306_PAGEADDR 0x22
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#define SSD1306_DEACTIVATE_SCROLL 0x2E
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#define SSD1306_SETSTARTLINE 0x40
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#define SSD1306_SETCONTRAST 0x81
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#define SSD1306_CHARGEPUMP 0x8D
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#define SSD1306_SEGREMAP 0xA0
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#define SSD1306_DISPLAYALLON_RESUME 0xA4
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#define SSD1306_NORMALDISPLAY 0xA6
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#define SSD1306_INVERTDISPLAY 0xA7
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#define SSD1306_SETMULTIPLEX 0xA8
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#define SSD1306_DISPLAYOFF 0xAE
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#define SSD1306_DISPLAYON 0xAF
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#define SSD1306_COMSCANDEC 0xC8
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#define SSD1306_SETDISPLAYOFFSET 0xD3
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#define SSD1306_SETDISPLAYCLOCKDIV 0xD5
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#define SSD1306_SETPRECHARGE 0xD9
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#define SSD1306_SETCOMPINS 0xDA
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#define SSD1306_SETVCOMDETECT 0xDB
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#endif /* OLED_H */
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