65 lines
2.5 KiB
C
65 lines
2.5 KiB
C
#ifndef MAIN_SSD1366_H_
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#define MAIN_SSD1366_H_
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#include "freertos/FreeRTOS.h"
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#include "driver/gpio.h"
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#include "driver/i2c.h"
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#include "esp_log.h"
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// SLA (0x3C) + WRITE_MODE (0x00) = 0x78 (0b01111000)
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#define OLED_I2C_ADDRESS 0x3C
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// Control byte
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#define OLED_CONTROL_BYTE_CMD_SINGLE 0x80
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#define OLED_CONTROL_BYTE_CMD_STREAM 0x00
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#define OLED_CONTROL_BYTE_DATA_STREAM 0x40
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// Fundamental commands (pg.28)
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#define OLED_CMD_SET_CONTRAST 0x81 // follow with 0x7F
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#define OLED_CMD_DISPLAY_RAM 0xA4
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#define OLED_CMD_DISPLAY_ALLON 0xA5
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#define OLED_CMD_DISPLAY_NORMAL 0xA6
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#define OLED_CMD_DISPLAY_INVERTED 0xA7
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#define OLED_CMD_DISPLAY_OFF 0xAE
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#define OLED_CMD_DISPLAY_ON 0xAF
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// Addressing Command Table (pg.30)
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#define OLED_CMD_SET_MEMORY_ADDR_MODE 0x20 // follow with 0x00 = HORZ mode = Behave like a KS108 graphic LCD
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#define OLED_CMD_SET_COLUMN_RANGE 0x21 // can be used only in HORZ/VERT mode - follow with 0x00 and 0x7F = COL127
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#define OLED_CMD_SET_PAGE_RANGE 0x22 // can be used only in HORZ/VERT mode - follow with 0x00 and 0x07 = PAGE7
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#define OLED_CMD_SET_PAGE_ADDR_MODE 0x02 // Page Addressing Mode
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// Hardware Config (pg.31)
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#define OLED_CMD_SET_DISPLAY_START_LINE 0x40
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#define OLED_CMD_SET_SEGMENT_REMAP 0xA1
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#define OLED_CMD_SET_MUX_RATIO 0xA8 // follow with 0x3F = 64 MUX
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#define OLED_CMD_SET_COM_SCAN_MODE 0xC8
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#define OLED_CMD_SET_DISPLAY_OFFSET 0xD3 // follow with 0x00
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#define OLED_CMD_SET_COM_PIN_MAP 0xDA // follow with 0x12
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#define OLED_CMD_NOP 0xE3 // NOP
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// Timing and Driving Scheme (pg.32)
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#define OLED_CMD_SET_DISPLAY_CLK_DIV 0xD5 // follow with 0x80
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#define OLED_CMD_SET_PRECHARGE 0xD9 // follow with 0xF1
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#define OLED_CMD_SET_VCOMH_DESELCT 0xDB // follow with 0x30
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// Charge Pump (pg.62)
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#define OLED_CMD_SET_CHARGE_PUMP 0x8D // follow with 0x14
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// Scrolling Command
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#define OLED_CMD_HORIZONTAL_RIGHT 0x26
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#define OLED_CMD_HORIZONTAL_LEFT 0x27
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#define OLED_CMD_CONTINUOUS_SCROLL 0x29
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#define OLED_CMD_DEACTIVE_SCROLL 0x2E
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#define OLED_CMD_ACTIVE_SCROLL 0x2F
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#define OLED_CMD_VERTICAL 0xA3
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void i2c_master_init();
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void ssd1306_init();
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void task_ssd1306_display_text(void *pvParameters);
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void i2c_contrast( int contrast);
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void ssd1306_display_clear(void);
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void ssd1306_display_text(char* text, uint16_t text_len);
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#endif /* MAIN_SSD1366_H_ */ |