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https://github.com/Lurkars/esp-ena.git
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122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
// Copyright 2020 Lukas Haubaum
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//
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// Licensed under the GNU Affero General Public License, Version 3;
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// https://www.gnu.org/licenses/agpl-3.0.html
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef _ssd1306_H_
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#define _ssd1306_H_
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#define SSD1306_ADDRESS (0x3C)
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#define SSD1306_COLUMNS (128)
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#define SSD1306_PAGES (8)
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// Write mode for I2C https://robotcantalk.blogspot.com/2015/03/interfacing-arduino-with-ssd1306-driven.html
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#define SSD1306_CONTROL_CMD_BYTE (0x80)
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#define SSD1306_CONTROL_CMD_STREAM (0x00)
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#define SSD1306_CONTROL_DATA_BYTE (0xC0)
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#define SSD1306_CONTROL_DATA_STREAM (0x40)
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// 1. Fundamental Command Table
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#define SSD1306_CMD_CONTRAST (0x81)
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#define SSD1306_CMD_RAM (0xA4)
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#define SSD1306_CMD_ALL_ON (0xA5)
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#define SSD1306_CMD_NORMAL (0xA6)
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#define SSD1306_CMD_INVERSE (0xA7)
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#define SSD1306_CMD_OFF (0xAE)
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#define SSD1306_CMD_ON (0xAF)
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// 2. Scrolling Command Table
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#define SSD1306_CMD_SCROLL_HORI_RIGHT (0x26)
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#define SSD1306_CMD_SCROLL_HORI_LEFT (0x27)
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#define SSD1306_CMD_SCROLL_VERT_RIGHT (0x29)
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#define SSD1306_CMD_SCROLL_VERT_LEFT (0x2A)
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#define SSD1306_CMD_SCROLL_STOP (0x2E)
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#define SSD1306_CMD_SCROLL_START (0x2F)
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#define SSD1306_CMD_SCROLL_VERT_AREA (0xA3)
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// 3. Addressing Setting Command Table
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#define SSD1306_CMD_COLUMN_LOW (0x00)
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#define SSD1306_CMD_COLUMN_HIGH (0x10)
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#define SSD1306_CMD_MEMORY_MODE (0x20)
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#define SSD1306_CMD_COLUMN_ADDRESS (0x21)
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#define SSD1306_CMD_PAGE_ADDRESS (0x22)
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#define SSD1306_CMD_PAGE (0xB0)
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// 4. Hardware Configuration (Panel resolution & layout related) Command Table
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#define SSD1306_CMD_START_LINE (0x40)
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#define SSD1306_CMD_SEGMENT_LOW (0xA0)
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#define SSD1306_CMD_SEGMENT_HIGH (0xA1)
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#define SSD1306_CMD_MULTIPLEX_RATIO (0xA8)
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#define SSD1306_CMD_SCAN_DIRECTION_NORMAL (0xC0)
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#define SSD1306_CMD_SCAN_DIRECTION_REMAPPED (0xC8)
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#define SSD1306_CMD_OFFSET (0xD3)
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#define SSD1306_CMD_COM_PINS (0xDA)
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// 5. Timing & Driving Scheme Setting Command Table
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#define SSD1306_CMD_CLOCK (0xD5)
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#define SSD1306_CMD_PRE_CHARGE_PERIOD (0xD9)
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#define SSD1306_CMD_VCOMH (0xDB)
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#define SSD1306_CMD_NOP (0xE3)
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// 1. Charge Pump Command Table
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#define SSD1306_CMD_CHARGE_PUMP (0x8D)
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/**
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* @brief initalize SSD1306 with I2C at given address
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*
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* @param[in] i2address I2C address of SSD1306
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*/
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void ssd1306_start(uint8_t i2address);
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/**
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* @brief clear the display
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*
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* @param[in] i2address I2C address of SSD1306
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* @param[in] line the line to clear
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*/
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void ssd1306_clear_line(uint8_t i2address, uint8_t line, bool invert);
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/**
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* @brief clear the display
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*
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* @param[in] i2address I2C address of SSD1306
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*/
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void ssd1306_clear(uint8_t i2address);
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/**
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* @brief set display on or offf
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*
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* @param[in] i2address I2C address of SSD1306
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* @param[in] on true if display on, false if display off
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*/
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void ssd1306_on(uint8_t i2address, bool on);
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/**
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* @brief write text to display line at starting column
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*
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* @param[in] i2address I2C address of SSD1306
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* @param[in] text text to display
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* @param[in] line the line to write to
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* @param[in] offset number of offset chars to start
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*/
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void ssd1306_text_line_column(uint8_t i2address, char *text, uint8_t line, uint8_t offset, bool invert);
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/**
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* @brief write text to display line
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*
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* @param[in] i2address I2C address of SSD1306
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* @param[in] text text to display
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* @param[in] line the line to write to
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*/
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void ssd1306_text_line(uint8_t i2address, char *text, uint8_t line, bool invert);
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#endif |