519 lines
18 KiB
C
519 lines
18 KiB
C
/*
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* This file is part of lcd library for ssd1306/ssd1309/sh1106 oled-display.
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*
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* lcd library for ssd1306/ssd1309/sh1106 oled-display is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or any later version.
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*
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* lcd library for ssd1306/ssd1309/sh1106 oled-display is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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*
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* Diese Datei ist Teil von lcd library for ssd1306/ssd1309/sh1106 oled-display.
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*
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* lcd library for ssd1306/ssd1309/sh1106 oled-display ist Freie Software: Sie können es unter den Bedingungen
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* der GNU General Public License, wie von der Free Software Foundation,
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* Version 3 der Lizenz oder jeder späteren
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* veröffentlichten Version, weiterverbreiten und/oder modifizieren.
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*
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* lcd library for ssd1306/ssd1309/sh1106 oled-display wird in der Hoffnung, dass es nützlich sein wird, aber
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* OHNE JEDE GEWÄHRLEISTUNG, bereitgestellt; sogar ohne die implizite
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* Gewährleistung der MARKTFÄHIGKEIT oder EIGNUNG FÜR EINEN BESTIMMTEN ZWECK.
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* Siehe die GNU General Public License für weitere Details.
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*
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* Sie sollten eine Kopie der GNU General Public License zusammen mit diesem
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* Programm erhalten haben. Wenn nicht, siehe <http://www.gnu.org/licenses/>.
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*
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* lcd.h
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*
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* Created by Michael Köhler on 22.12.16.
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* Copyright 2016 Skie-Systems. All rights reserved.
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*
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* lib for OLED-Display with ssd1306/ssd1309/sh1106-Controller
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* first dev-version only for I2C-Connection
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* at ATMega328P like Arduino Uno
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*
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* at GRAPHICMODE lib needs static SRAM for display:
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* DISPLAY-WIDTH * DISPLAY-HEIGHT + 2 bytes
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*
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* at TEXTMODE lib need static SRAM for display:
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* 2 bytes (cursorPosition)
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*/
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#include "lcd.h"
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#include "font.h"
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#include <string.h>
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#if defined SPI
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#include <util/delay.h>
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#endif
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static struct {
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uint8_t x;
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uint8_t y;
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} cursorPosition;
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static uint8_t charMode = NORMALSIZE;
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#if defined GRAPHICMODE
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#include <stdlib.h>
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static uint8_t displayBuffer[DISPLAY_HEIGHT/8][DISPLAY_WIDTH];
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#elif defined TEXTMODE
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#else
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#error "No valid displaymode! Refer lcd.h"
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#endif
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const uint8_t init_sequence [] PROGMEM = { // Initialization Sequence
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LCD_DISP_OFF, // Display OFF (sleep mode)
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0x20, 0b00, // Set Memory Addressing Mode
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// 00=Horizontal Addressing Mode; 01=Vertical Addressing Mode;
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// 10=Page Addressing Mode (RESET); 11=Invalid
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0xB0, // Set Page Start Address for Page Addressing Mode, 0-7
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0xC8, // Set COM Output Scan Direction
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0x00, // --set low column address
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0x10, // --set high column address
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0x40, // --set start line address
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0x81, 0x3F, // Set contrast control register
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0xA1, // Set Segment Re-map. A0=address mapped; A1=address 127 mapped.
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0xA6, // Set display mode. A6=Normal; A7=Inverse
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0xA8, DISPLAY_HEIGHT-1, // Set multiplex ratio(1 to 64)
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0xA4, // Output RAM to Display
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// 0xA4=Output follows RAM content; 0xA5,Output ignores RAM content
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0xD3, 0x00, // Set display offset. 00 = no offset
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0xD5, // --set display clock divide ratio/oscillator frequency
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0xF0, // --set divide ratio
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0xD9, 0x22, // Set pre-charge period
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// Set com pins hardware configuration
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#if DISPLAY_HEIGHT==64
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0xDA, 0x12,
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#elif DISPLAY_HEIGHT==32
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0xDA, 0x02,
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#endif
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0xDB, // --set vcomh
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0x20, // 0x20,0.77xVcc
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0x8D, 0x14, // Set DC-DC enable
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};
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#pragma mark LCD COMMUNICATION
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void lcd_command(uint8_t cmd[], uint8_t size) {
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#if defined I2C
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i2c_start((LCD_I2C_ADR << 1) | 0);
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i2c_byte(0x00); // 0x00 for command, 0x40 for data
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for (uint8_t i=0; i<size; i++) {
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i2c_byte(cmd[i]);
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}
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i2c_stop();
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#elif defined SPI
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LCD_PORT &= ~(1 << CS_PIN);
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LCD_PORT &= ~(1 << DC_PIN);
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for (uint8_t i=0; i<size; i++) {
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SPDR = cmd[i];
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while(!(SPSR & (1<<SPIF)));
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}
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LCD_PORT |= (1 << CS_PIN);
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#endif
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}
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void lcd_data(uint8_t data[], uint16_t size) {
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#if defined I2C
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i2c_start((LCD_I2C_ADR << 1) | 0);
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i2c_byte(0x40); // 0x00 for command, 0x40 for data
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for (uint16_t i = 0; i<size; i++) {
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i2c_byte(data[i]);
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}
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i2c_stop();
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#elif defined SPI
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LCD_PORT &= ~(1 << CS_PIN);
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LCD_PORT |= (1 << DC_PIN);
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for (uint16_t i = 0; i<size; i++) {
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SPDR = data[i];
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while(!(SPSR & (1<<SPIF)));
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}
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LCD_PORT |= (1 << CS_PIN);
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#endif
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}
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#pragma mark -
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#pragma mark GENERAL FUNCTIONS
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void lcd_init(uint8_t dispAttr){
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#if defined I2C
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i2c_init();
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#elif defined SPI
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DDRB |= (1 << PB2)|(1 << PB3)|(1 << PB5);
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SPCR = (1 << SPE)|(1<<MSTR)|(1<<SPR0);
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LCD_DDR |= (1 << CS_PIN)|(1 << DC_PIN)|(1 << RES_PIN);
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LCD_PORT |= (1 << CS_PIN)|(1 << DC_PIN)|(1 << RES_PIN);
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LCD_PORT &= ~(1 << RES_PIN);
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_delay_ms(10);
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LCD_PORT |= (1 << RES_PIN);
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#endif
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uint8_t commandSequence[sizeof(init_sequence)+1];
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for (uint8_t i = 0; i < sizeof (init_sequence); i++) {
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commandSequence[i] = (pgm_read_byte(&init_sequence[i]));
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}
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commandSequence[sizeof(init_sequence)]=(dispAttr);
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lcd_command(commandSequence, sizeof(commandSequence));
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lcd_clrscr();
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}
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void lcd_gotoxy(uint8_t x, uint8_t y){
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x = x * sizeof(FONT[0]);
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lcd_goto_xpix_y(x,y);
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}
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void lcd_goto_xpix_y(uint8_t x, uint8_t y){
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if( x > (DISPLAY_WIDTH) || y > (DISPLAY_HEIGHT/8-1)) return;// out of display
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cursorPosition.x=x;
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cursorPosition.y=y;
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#if defined (SSD1306) || defined (SSD1309)
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uint8_t commandSequence[] = {0xb0+y, 0x21, x, 0x7f};
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#elif defined SH1106
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uint8_t commandSequence[] = {0xb0+y, 0x21, 0x00+((2+x) & (0x0f)), 0x10+( ((2+x) & (0xf0)) >> 4 ), 0x7f};
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#endif
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lcd_command(commandSequence, sizeof(commandSequence));
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}
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void lcd_set_buffer(uint8_t x, uint8_t y, uint8_t value) {
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displayBuffer[y][x] = value;
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}
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void lcd_clrscr(void){
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#ifdef GRAPHICMODE
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for (uint8_t i = 0; i < DISPLAY_HEIGHT/8; i++){
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memset(displayBuffer[i], 0x00, sizeof(displayBuffer[i]));
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}
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lcd_display();
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#elif defined TEXTMODE
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uint8_t displayBuffer[DISPLAY_WIDTH];
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memset(displayBuffer, 0x00, sizeof(displayBuffer));
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for (uint8_t i = 0; i < DISPLAY_HEIGHT/8; i++){
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lcd_gotoxy(0,i);
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lcd_data(displayBuffer, sizeof(displayBuffer));
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}
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#endif
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lcd_home();
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}
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void lcd_home(void){
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lcd_gotoxy(0, 0);
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}
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void lcd_invert(uint8_t invert){
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uint8_t commandSequence[1];
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if (invert != YES) {
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commandSequence[0] = 0xA6;
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} else {
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commandSequence[0] = 0xA7;
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}
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lcd_command(commandSequence, 1);
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}
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void lcd_sleep(uint8_t sleep){
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uint8_t commandSequence[1];
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if (sleep != YES) {
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commandSequence[0] = 0xAF;
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} else {
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commandSequence[0] = 0xAE;
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}
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lcd_command(commandSequence, 1);
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}
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void lcd_set_contrast(uint8_t contrast){
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uint8_t commandSequence[2] = {0x81, contrast};
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lcd_command(commandSequence, sizeof(commandSequence));
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}
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void lcd_putc(char c){
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switch (c) {
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case '\b':
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// backspace
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lcd_gotoxy(cursorPosition.x-charMode, cursorPosition.y);
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lcd_putc(' ');
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lcd_gotoxy(cursorPosition.x-charMode, cursorPosition.y);
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break;
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case '\t':
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// tab
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if( (cursorPosition.x+charMode*4) < (DISPLAY_WIDTH/ sizeof(FONT[0])-charMode*4) ){
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lcd_gotoxy(cursorPosition.x+charMode*4, cursorPosition.y);
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}else{
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lcd_gotoxy(DISPLAY_WIDTH/ sizeof(FONT[0]), cursorPosition.y);
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}
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break;
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case '\n':
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// linefeed
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if(cursorPosition.y < (DISPLAY_HEIGHT/8-1)){
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lcd_gotoxy(cursorPosition.x, cursorPosition.y+charMode);
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}
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break;
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case '\r':
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// carrige return
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lcd_gotoxy(0, cursorPosition.y);
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break;
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default:
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// char doesn't fit in line
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if( (cursorPosition.x >= DISPLAY_WIDTH-sizeof(FONT[0])) || (c < ' ') ) break;
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// mapping char
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c -= ' ';
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if (c >= pgm_read_byte(&special_char[0][1]) ) {
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char temp = c;
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c = 0xff;
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for (uint8_t i=0; pgm_read_byte(&special_char[i][1]) != 0xff; i++) {
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if ( pgm_read_byte(&special_char[i][0])-' ' == temp ) {
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c = pgm_read_byte(&special_char[i][1]);
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break;
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}
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}
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if ( c == 0xff ) break;
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}
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// print char at display
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#ifdef GRAPHICMODE
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if (charMode == DOUBLESIZE) {
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uint16_t doubleChar[sizeof(FONT[0])];
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uint8_t dChar;
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if ((cursorPosition.x+2*sizeof(FONT[0]))>DISPLAY_WIDTH) break;
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for (uint8_t i=0; i < sizeof(FONT[0]); i++) {
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doubleChar[i] = 0;
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dChar = pgm_read_byte(&(FONT[(uint8_t)c][i]));
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for (uint8_t j=0; j<8; j++) {
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if ((dChar & (1 << j))) {
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doubleChar[i] |= (1 << (j*2));
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doubleChar[i] |= (1 << ((j*2)+1));
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}
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}
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}
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for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
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{
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// load bit-pattern from flash
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displayBuffer[cursorPosition.y+1][cursorPosition.x+(2*i)] = doubleChar[i] >> 8;
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displayBuffer[cursorPosition.y+1][cursorPosition.x+(2*i)+1] = doubleChar[i] >> 8;
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displayBuffer[cursorPosition.y][cursorPosition.x+(2*i)] = doubleChar[i] & 0xff;
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displayBuffer[cursorPosition.y][cursorPosition.x+(2*i)+1] = doubleChar[i] & 0xff;
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}
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cursorPosition.x += sizeof(FONT[0])*2;
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} else {
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if ((cursorPosition.x+sizeof(FONT[0]))>DISPLAY_WIDTH) break;
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for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
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{
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// load bit-pattern from flash
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displayBuffer[cursorPosition.y][cursorPosition.x+i] =pgm_read_byte(&(FONT[(uint8_t)c][i]));
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}
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cursorPosition.x += sizeof(FONT[0]);
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}
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#elif defined TEXTMODE
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if (charMode == DOUBLESIZE) {
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uint16_t doubleChar[sizeof(FONT[0])];
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uint8_t dChar;
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if ((cursorPosition.x+2*sizeof(FONT[0]))>DISPLAY_WIDTH) break;
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for (uint8_t i=0; i < sizeof(FONT[0]); i++) {
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doubleChar[i] = 0;
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dChar = pgm_read_byte(&(FONT[(uint8_t)c][i]));
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for (uint8_t j=0; j<8; j++) {
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if ((dChar & (1 << j))) {
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doubleChar[i] |= (1 << (j*2));
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doubleChar[i] |= (1 << ((j*2)+1));
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}
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}
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}
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uint8_t data[sizeof(FONT[0])*2];
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for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
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{
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// print font to ram, print 6 columns
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data[i<<1]=(doubleChar[i] & 0xff);
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data[(i<<1)+1]=(doubleChar[i] & 0xff);
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}
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lcd_data(data, sizeof(FONT[0])*2);
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#if defined (SSD1306) || defined (SSD1309)
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uint8_t commandSequence[] = {0xb0+cursorPosition.y+1,
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0x21,
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cursorPosition.x,
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0x7f};
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#elif defined SH1106
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uint8_t commandSequence[] = {0xb0+cursorPosition.y+1,
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0x21,
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0x00+((2+cursorPosition.x) & (0x0f)),
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0x10+( ((2+cursorPosition.x) & (0xf0)) >> 4 ),
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0x7f};
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#endif
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lcd_command(commandSequence, sizeof(commandSequence));
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for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
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{
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// print font to ram, print 6 columns
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data[i<<1]=(doubleChar[i] >> 8);
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data[(i<<1)+1]=(doubleChar[i] >> 8);
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}
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lcd_data(data, sizeof(FONT[0])*2);
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commandSequence[0] = 0xb0+cursorPosition.y;
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#if defined (SSD1306) || defined (SSD1309)
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commandSequence[2] = cursorPosition.x+(2*sizeof(FONT[0]));
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#elif defined SH1106
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commandSequence[2] = 0x00+((2+cursorPosition.x+(2*sizeof(FONT[0]))) & (0x0f));
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commandSequence[3] = 0x10+( ((2+cursorPosition.x+(2*sizeof(FONT[0]))) & (0xf0)) >> 4 );
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#endif
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lcd_command(commandSequence, sizeof(commandSequence));
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cursorPosition.x += sizeof(FONT[0])*2;
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} else {
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uint8_t data[sizeof(FONT[0])];
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if ((cursorPosition.x+sizeof(FONT[0]))>DISPLAY_WIDTH) break;
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for (uint8_t i = 0; i < sizeof(FONT[0]); i++)
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{
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// print font to ram, print 6 columns
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data[i]=(pgm_read_byte(&(FONT[(uint8_t)c][i])));
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}
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lcd_data(data, sizeof(FONT[0]));
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cursorPosition.x += sizeof(FONT[0]);
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}
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#endif
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break;
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}
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}
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void lcd_charMode(uint8_t mode){
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charMode = mode;
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}
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void lcd_puts(const char* s){
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while (*s) {
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lcd_putc(*s++);
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}
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}
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void lcd_puts_p(const char* progmem_s){
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register uint8_t c;
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while ((c = pgm_read_byte(progmem_s++))) {
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lcd_putc(c);
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}
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}
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#ifdef GRAPHICMODE
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#pragma mark -
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#pragma mark GRAPHIC FUNCTIONS
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void lcd_drawPixel(uint8_t x, uint8_t y, uint8_t color){
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if( x > DISPLAY_WIDTH-1 || y > (DISPLAY_HEIGHT-1)) return; // out of Display
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if( color == WHITE){
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displayBuffer[(y / 8)][x] |= (1 << (y % 8));
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} else {
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displayBuffer[(y / 8)][x] &= ~(1 << (y % 8));
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}
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}
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void lcd_drawLine(uint8_t x1, uint8_t y1, uint8_t x2, uint8_t y2, uint8_t color){
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if( x1 > DISPLAY_WIDTH-1 ||
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x2 > DISPLAY_WIDTH-1 ||
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y1 > DISPLAY_HEIGHT-1 ||
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y2 > DISPLAY_HEIGHT-1) return;
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int dx = abs(x2-x1), sx = x1<x2 ? 1 : -1;
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int dy = -abs(y2-y1), sy = y1<y2 ? 1 : -1;
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int err = dx+dy, e2; /* error value e_xy */
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while(1){
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lcd_drawPixel(x1, y1, color);
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if (x1==x2 && y1==y2) break;
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e2 = 2*err;
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if (e2 > dy) { err += dy; x1 += sx; } /* e_xy+e_x > 0 */
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if (e2 < dx) { err += dx; y1 += sy; } /* e_xy+e_y < 0 */
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}
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}
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void lcd_drawRect(uint8_t px1, uint8_t py1, uint8_t px2, uint8_t py2, uint8_t color){
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if( px1 > DISPLAY_WIDTH-1 ||
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px2 > DISPLAY_WIDTH-1 ||
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py1 > DISPLAY_HEIGHT-1 ||
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py2 > DISPLAY_HEIGHT-1) return;
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lcd_drawLine(px1, py1, px2, py1, color);
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lcd_drawLine(px2, py1, px2, py2, color);
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lcd_drawLine(px2, py2, px1, py2, color);
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lcd_drawLine(px1, py2, px1, py1, color);
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}
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void lcd_fillRect(uint8_t px1, uint8_t py1, uint8_t px2, uint8_t py2, uint8_t color){
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if( px1 > px2){
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uint8_t temp = px1;
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px1 = px2;
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px2 = temp;
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temp = py1;
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py1 = py2;
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py2 = temp;
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}
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for (uint8_t i=0; i<=(py2-py1); i++){
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lcd_drawLine(px1, py1+i, px2, py1+i, color);
|
|
}
|
|
}
|
|
void lcd_drawCircle(uint8_t center_x, uint8_t center_y, uint8_t radius, uint8_t color){
|
|
if( ((center_x + radius) > DISPLAY_WIDTH-1) ||
|
|
((center_y + radius) > DISPLAY_HEIGHT-1) ||
|
|
center_x < radius ||
|
|
center_y < radius) return;
|
|
int16_t f = 1 - radius;
|
|
int16_t ddF_x = 1;
|
|
int16_t ddF_y = -2 * radius;
|
|
int16_t x = 0;
|
|
int16_t y = radius;
|
|
|
|
lcd_drawPixel(center_x , center_y+radius, color);
|
|
lcd_drawPixel(center_x , center_y-radius, color);
|
|
lcd_drawPixel(center_x+radius, center_y , color);
|
|
lcd_drawPixel(center_x-radius, center_y , color);
|
|
|
|
while (x<y) {
|
|
if (f >= 0) {
|
|
y--;
|
|
ddF_y += 2;
|
|
f += ddF_y;
|
|
}
|
|
x++;
|
|
ddF_x += 2;
|
|
f += ddF_x;
|
|
|
|
lcd_drawPixel(center_x + x, center_y + y, color);
|
|
lcd_drawPixel(center_x - x, center_y + y, color);
|
|
lcd_drawPixel(center_x + x, center_y - y, color);
|
|
lcd_drawPixel(center_x - x, center_y - y, color);
|
|
lcd_drawPixel(center_x + y, center_y + x, color);
|
|
lcd_drawPixel(center_x - y, center_y + x, color);
|
|
lcd_drawPixel(center_x + y, center_y - x, color);
|
|
lcd_drawPixel(center_x - y, center_y - x, color);
|
|
}
|
|
}
|
|
void lcd_fillCircle(uint8_t center_x, uint8_t center_y, uint8_t radius, uint8_t color) {
|
|
for(uint8_t i=0; i<= radius;i++){
|
|
lcd_drawCircle(center_x, center_y, i, color);
|
|
}
|
|
}
|
|
void lcd_drawBitmap(uint8_t x, uint8_t y, const uint8_t *picture, uint8_t width, uint8_t height, uint8_t color){
|
|
uint8_t i,j, byteWidth = (width+7)/8;
|
|
for (j = 0; j < height; j++) {
|
|
for(i=0; i < width;i++){
|
|
if(pgm_read_byte(picture + j * byteWidth + i / 8) & (128 >> (i & 7))){
|
|
lcd_drawPixel(x+i, y+j, color);
|
|
} else {
|
|
lcd_drawPixel(x+i, y+j, !color);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
void lcd_display() {
|
|
#if defined (SSD1306) || defined (SSD1309)
|
|
lcd_gotoxy(0,0);
|
|
lcd_data(&displayBuffer[0][0], DISPLAY_WIDTH*DISPLAY_HEIGHT/8);
|
|
#elif defined SH1106
|
|
for (uint8_t i = 0; i < DISPLAY_HEIGHT/8; i++){
|
|
lcd_gotoxy(0,i);
|
|
lcd_data(displayBuffer[i], sizeof(displayBuffer[i]));
|
|
}
|
|
#endif
|
|
}
|
|
void lcd_clear_buffer() {
|
|
for (uint8_t i = 0; i < DISPLAY_HEIGHT/8; i++){
|
|
memset(displayBuffer[i], 0x00, sizeof(displayBuffer[i]));
|
|
}
|
|
}
|
|
uint8_t lcd_check_buffer(uint8_t x, uint8_t y) {
|
|
if( x > DISPLAY_WIDTH-1 || y > (DISPLAY_HEIGHT-1)) return 0; // out of Display
|
|
return displayBuffer[(y / (DISPLAY_HEIGHT/8))][x] & (1 << (y % (DISPLAY_HEIGHT/8)));
|
|
}
|
|
void lcd_display_block(uint8_t x, uint8_t line, uint8_t width) {
|
|
if (line > (DISPLAY_HEIGHT/8-1) || x > DISPLAY_WIDTH - 1){return;}
|
|
if (x + width > DISPLAY_WIDTH) { // no -1 here, x alone is width 1
|
|
width = DISPLAY_WIDTH - x;
|
|
}
|
|
lcd_goto_xpix_y(x,line);
|
|
lcd_data(&displayBuffer[line][x], width);
|
|
}
|
|
#endif
|