1 /* 2 * Copyright (c) 2018 Phytec Messtechnik GmbH 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 8 #ifndef __SSD1306_REGS_H__ 9 #define __SSD1306_REGS_H__ 10 11 /* All following bytes will contain commands */ 12 #define SSD1306_CONTROL_ALL_BYTES_CMD 0x00 13 /* All following bytes will contain data */ 14 #define SSD1306_CONTROL_ALL_BYTES_DATA 0x40 15 /* The next byte will contain a command */ 16 #define SSD1306_CONTROL_BYTE_CMD 0x80 17 /* The next byte will contain data */ 18 #define SSD1306_CONTROL_BYTE_DATA 0xc0 19 #define SSD1306_READ_STATUS_MASK 0xc0 20 #define SSD1306_READ_STATUS_BUSY 0x80 21 #define SSD1306_READ_STATUS_ON 0x40 22 23 /* 24 * Fundamental Command Table 25 */ 26 #define SSD1306_SET_CONTRAST_CTRL 0x81 /* double byte command */ 27 28 #define SSD1306_SET_ENTIRE_DISPLAY_OFF 0xa4 29 #define SSD1306_SET_ENTIRE_DISPLAY_ON 0xa5 30 31 /* RAM data of 1 indicates an "ON" pixel */ 32 #define SSD1306_SET_NORMAL_DISPLAY 0xa6 33 /* RAM data of 0 indicates an "ON" pixel */ 34 #define SSD1306_SET_REVERSE_DISPLAY 0xa7 35 36 #define SSD1306_DISPLAY_OFF 0xae 37 #define SSD1306_DISPLAY_ON 0xaf 38 39 /* 40 * Addressing Setting Command Table 41 */ 42 #define SSD1306_SET_LOWER_COL_ADDRESS 0x00 43 #define SSD1306_SET_LOWER_COL_ADDRESS_MASK 0x0f 44 45 #define SSD1306_SET_HIGHER_COL_ADDRESS 0x10 46 #define SSD1306_SET_HIGHER_COL_ADDRESS_MASK 0x0f 47 48 #define SSD1306_SET_MEM_ADDRESSING_MODE 0x20 /* double byte command */ 49 #define SSD1306_SET_MEM_ADDRESSING_HORIZONTAL 0x00 50 #define SSD1306_SET_MEM_ADDRESSING_VERTICAL 0x01 51 #define SSD1306_SET_MEM_ADDRESSING_PAGE 0x02 52 53 #define SSD1306_SET_COLUMN_ADDRESS 0x21 /* triple byte command */ 54 55 #define SSD1306_SET_PAGE_ADDRESS 0x22 /* triple byte command */ 56 57 #define SSD1306_SET_PAGE_START_ADDRESS 0xb0 58 #define SSD1306_SET_PAGE_START_ADDRESS_MASK 0x07 59 60 61 /* 62 * Hardware Configuration Command Table 63 */ 64 #define SSD1306_SET_START_LINE 0x40 65 #define SSD1306_SET_START_LINE_MASK 0x3f 66 67 #define SSD1306_SET_SEGMENT_MAP_NORMAL 0xa0 68 #define SSD1306_SET_SEGMENT_MAP_REMAPED 0xa1 69 70 #define SSD1306_SET_MULTIPLEX_RATIO 0xa8 /* double byte command */ 71 72 #define SSD1306_SET_COM_OUTPUT_SCAN_NORMAL 0xc0 73 #define SSD1306_SET_COM_OUTPUT_SCAN_FLIPPED 0xc8 74 75 #define SSD1306_SET_DISPLAY_OFFSET 0xd3 /* double byte command */ 76 77 #define SSD1306_SET_PADS_HW_CONFIG 0xda /* double byte command */ 78 #define SSD1306_SET_PADS_HW_SEQUENTIAL 0x02 79 #define SSD1306_SET_PADS_HW_ALTERNATIVE 0x12 80 81 #define SSD1306_SET_IREF_MODE 0xad 82 #define SSD1306_SET_IREF_MODE_INTERNAL 0x30 83 #define SSD1306_SET_IREF_MODE_EXTERNAL 0x00 84 85 86 /* 87 * Timing and Driving Scheme Setting Command Table 88 */ 89 #define SSD1306_SET_CLOCK_DIV_RATIO 0xd5 /* double byte command */ 90 91 #define SSD1306_SET_CHARGE_PERIOD 0xd9 /* double byte command */ 92 93 #define SSD1306_SET_VCOM_DESELECT_LEVEL 0xdb /* double byte command */ 94 95 #define SSD1306_NOP 0xe3 96 97 /* 98 * Charge Pump Command Table 99 */ 100 #define SSD1306_SET_CHARGE_PUMP_ON 0x8d /* double byte command */ 101 #define SSD1306_SET_CHARGE_PUMP_ON_DISABLED 0x10 102 #define SSD1306_SET_CHARGE_PUMP_ON_ENABLED 0x14 103 104 #define SH1106_SET_DCDC_MODE 0xad /* double byte command */ 105 #define SH1106_SET_DCDC_DISABLED 0x8a 106 #define SH1106_SET_DCDC_ENABLED 0x8b 107 108 #define SSD1306_SET_PUMP_VOLTAGE_64 0x30 109 #define SSD1306_SET_PUMP_VOLTAGE_74 0x31 110 #define SSD1306_SET_PUMP_VOLTAGE_80 0x32 111 #define SSD1306_SET_PUMP_VOLTAGE_90 0x33 112 113 /* 114 * Read modify write 115 */ 116 #define SSD1306_READ_MODIFY_WRITE_START 0xe0 117 #define SSD1306_READ_MODIFY_WRITE_END 0xee 118 119 /* time constants in ms */ 120 #define SSD1306_RESET_DELAY 1 121 122 #endif 123
