mirror of
https://github.com/digistump/DigistumpArduino.git
synced 2025-11-03 13:04:48 -08:00
320 lines
9.6 KiB
C++
320 lines
9.6 KiB
C++
#include <avr/pgmspace.h>
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#include <util/delay.h>
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#include <stdlib.h>
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#include <Wire.h>
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#include "SSD1306.h"
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SSD1306::SSD1306(int8_t SCLK, int8_t DC, int8_t RST, int8_t CS) {
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cs = CS;
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rst = RST;
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dc = DC;
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sclk = SCLK;
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}
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// initializer for I2C - we only indicate the reset pin!
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SSD1306::SSD1306(int8_t reset) {
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sclk = dc = cs = -1;
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rst = reset;
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}
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void SSD1306::begin(uint8_t vccstate, uint8_t i2caddr) {
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_i2caddr = i2caddr;
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// set pin directions
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// Setup reset pin direction (used by both SPI and I2C)
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pinMode(rst, OUTPUT);
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// I2C Init
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Wire.begin(); // Is this the right place for this?
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digitalWrite(rst, HIGH);
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// VDD (3.3V) goes high at start, lets just chill for a ms
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delay(1);
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// bring reset low
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digitalWrite(rst, LOW);
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// wait 10ms
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delay(10);
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// bring out of reset
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digitalWrite(rst, HIGH);
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// turn on VCC (9V?)
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#if defined SSD1306_128_32
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// Init sequence for 128x32 OLED module
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ssd1306_command(SSD1306_DISPLAYOFF); // 0xAE
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ssd1306_command(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5
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ssd1306_command(0x80); // the suggested ratio 0x80
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ssd1306_command(SSD1306_SETMULTIPLEX); // 0xA8
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ssd1306_command(0x1F);
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ssd1306_command(SSD1306_SETDISPLAYOFFSET); // 0xD3
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ssd1306_command(0x0); // no offset
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ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0
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ssd1306_command(SSD1306_CHARGEPUMP); // 0x8D
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if (vccstate == SSD1306_EXTERNALVCC)
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{ ssd1306_command(0x10); }
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else
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{ ssd1306_command(0x14); }
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ssd1306_command(SSD1306_MEMORYMODE); // 0x20
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ssd1306_command(0x00); // 0x0 act like ks0108
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ssd1306_command(SSD1306_SEGREMAP | 0x1);
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ssd1306_command(SSD1306_COMSCANDEC);
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ssd1306_command(SSD1306_SETCOMPINS); // 0xDA
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ssd1306_command(0x02);
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ssd1306_command(SSD1306_SETCONTRAST); // 0x81
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ssd1306_command(0x8F);
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ssd1306_command(SSD1306_SETPRECHARGE); // 0xd9
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if (vccstate == SSD1306_EXTERNALVCC)
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{ ssd1306_command(0x22); }
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else
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{ ssd1306_command(0xF1); }
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ssd1306_command(SSD1306_SETVCOMDETECT); // 0xDB
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ssd1306_command(0x40);
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ssd1306_command(SSD1306_DISPLAYALLON_RESUME); // 0xA4
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ssd1306_command(SSD1306_NORMALDISPLAY); // 0xA6
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#endif
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#if defined SSD1306_128_64
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// Init sequence for 128x64 OLED module
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ssd1306_command(SSD1306_DISPLAYOFF); // 0xAE
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ssd1306_command(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5
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ssd1306_command(0x80); // the suggested ratio 0x80
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ssd1306_command(SSD1306_SETMULTIPLEX); // 0xA8
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ssd1306_command(0x3F);
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ssd1306_command(SSD1306_SETDISPLAYOFFSET); // 0xD3
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ssd1306_command(0x0); // no offset
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ssd1306_command(SSD1306_SETSTARTLINE | 0x0); // line #0
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ssd1306_command(SSD1306_CHARGEPUMP); // 0x8D
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if (vccstate == SSD1306_EXTERNALVCC)
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{ ssd1306_command(0x10); }
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else
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{ ssd1306_command(0x14); }
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ssd1306_command(SSD1306_MEMORYMODE); // 0x20
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ssd1306_command(0x00); // 0x0 act like ks0108
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ssd1306_command(SSD1306_SEGREMAP | 0x1);
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ssd1306_command(SSD1306_COMSCANDEC);
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ssd1306_command(SSD1306_SETCOMPINS); // 0xDA
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ssd1306_command(0x12);
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ssd1306_command(SSD1306_SETCONTRAST); // 0x81
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if (vccstate == SSD1306_EXTERNALVCC)
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{ ssd1306_command(0x9F); }
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else
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{ ssd1306_command(0xCF); }
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ssd1306_command(SSD1306_SETPRECHARGE); // 0xd9
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if (vccstate == SSD1306_EXTERNALVCC)
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{ ssd1306_command(0x22); }
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else
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{ ssd1306_command(0xF1); }
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ssd1306_command(SSD1306_SETVCOMDETECT); // 0xDB
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ssd1306_command(0x40);
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ssd1306_command(SSD1306_DISPLAYALLON_RESUME); // 0xA4
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ssd1306_command(SSD1306_NORMALDISPLAY); // 0xA6
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#endif
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ssd1306_command(SSD1306_DISPLAYON);//--turn on oled panel
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// clear screen
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delay(5);
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clear();
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}
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void SSD1306::invertDisplay(uint8_t i) {
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if (i) {
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ssd1306_command(SSD1306_INVERTDISPLAY);
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} else {
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ssd1306_command(SSD1306_NORMALDISPLAY);
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}
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}
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void SSD1306::ssd1306_command(uint8_t c) {
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// I2C
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uint8_t control = 0x00; // Co = 0, D/C = 0
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Wire.beginTransmission(_i2caddr);
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WIRE_WRITE(control);
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WIRE_WRITE(c);
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Wire.endTransmission();
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}
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void SSD1306::ssd1306_command2(uint8_t c, uint8_t d) {
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// I2C
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uint8_t control = 0x00; // Co = 0, D/C = 0
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Wire.beginTransmission(_i2caddr);
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WIRE_WRITE(control);
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WIRE_WRITE(c);
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WIRE_WRITE(d);
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Wire.endTransmission();
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}
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void SSD1306::ssd1306_command3(uint8_t c, uint8_t d, uint8_t e) {
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// I2C
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uint8_t control = 0x00; // Co = 0, D/C = 0
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Wire.beginTransmission(_i2caddr);
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WIRE_WRITE(control);
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WIRE_WRITE(c);
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WIRE_WRITE(d);
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WIRE_WRITE(e);
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Wire.endTransmission();
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}
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// startscrollright
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// Activate a right handed scroll for rows start through stop
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// Hint, the display is 16 rows tall. To scroll the whole display, run:
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// display.scrollright(0x00, 0x0F)
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void SSD1306::startscrollright(uint8_t start, uint8_t stop){
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ssd1306_command(SSD1306_RIGHT_HORIZONTAL_SCROLL);
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ssd1306_command(0X00);
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ssd1306_command(start);
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ssd1306_command(0X00);
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ssd1306_command(stop);
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ssd1306_command(0X01);
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ssd1306_command(0XFF);
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ssd1306_command(SSD1306_ACTIVATE_SCROLL);
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}
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// startscrollleft
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// Activate a right handed scroll for rows start through stop
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// Hint, the display is 16 rows tall. To scroll the whole display, run:
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// display.scrollright(0x00, 0x0F)
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void SSD1306::startscrollleft(uint8_t start, uint8_t stop){
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ssd1306_command(SSD1306_LEFT_HORIZONTAL_SCROLL);
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ssd1306_command(0X00);
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ssd1306_command(start);
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ssd1306_command(0X00);
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ssd1306_command(stop);
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ssd1306_command(0X01);
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ssd1306_command(0XFF);
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ssd1306_command(SSD1306_ACTIVATE_SCROLL);
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}
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// startscrolldiagright
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// Activate a diagonal scroll for rows start through stop
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// Hint, the display is 16 rows tall. To scroll the whole display, run:
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// display.scrollright(0x00, 0x0F)
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void SSD1306::startscrolldiagright(uint8_t start, uint8_t stop){
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ssd1306_command(SSD1306_SET_VERTICAL_SCROLL_AREA);
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ssd1306_command(0X00);
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ssd1306_command(SSD1306_LCDHEIGHT);
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ssd1306_command(SSD1306_VERTICAL_AND_RIGHT_HORIZONTAL_SCROLL);
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ssd1306_command(0X00);
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ssd1306_command(start);
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ssd1306_command(0X00);
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ssd1306_command(stop);
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ssd1306_command(0X01);
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ssd1306_command(SSD1306_ACTIVATE_SCROLL);
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}
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// startscrolldiagleft
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// Activate a diagonal scroll for rows start through stop
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// Hint, the display is 16 rows tall. To scroll the whole display, run:
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// display.scrollright(0x00, 0x0F)
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void SSD1306::startscrolldiagleft(uint8_t start, uint8_t stop){
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ssd1306_command(SSD1306_SET_VERTICAL_SCROLL_AREA);
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ssd1306_command(0X00);
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ssd1306_command(SSD1306_LCDHEIGHT);
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ssd1306_command(SSD1306_VERTICAL_AND_LEFT_HORIZONTAL_SCROLL);
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ssd1306_command(0X00);
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ssd1306_command(start);
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ssd1306_command(0X00);
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ssd1306_command(stop);
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ssd1306_command(0X01);
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ssd1306_command(SSD1306_ACTIVATE_SCROLL);
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}
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void SSD1306::stopscroll(void){
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ssd1306_command(SSD1306_DEACTIVATE_SCROLL);
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}
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void SSD1306::ssd1306_data(uint8_t c) {
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// I2C
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uint8_t control = 0x40; // Co = 0, D/C = 1
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Wire.beginTransmission(_i2caddr);
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WIRE_WRITE(control);
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WIRE_WRITE(c);
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Wire.endTransmission();
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}
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void SSD1306::fill(unsigned char dat)
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{
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unsigned char i,j;
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ssd1306_command(0x00);//set lower column address
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ssd1306_command(0x10);//set higher column address
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ssd1306_command(0xB0);//set page address
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#ifdef TWBR
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uint8_t twbrbackup = TWBR;
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TWBR = 18; // upgrade to 400KHz!
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#endif
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for (byte i=0; i<(SSD1306_LCDHEIGHT/8); i++)
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{
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// send a bunch of data in one xmission
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ssd1306_command(0xB0 + i);//set page address
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ssd1306_command(0);//set lower column address
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ssd1306_command(0x10);//set higher column address
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for(byte j = 0; j < 8; j++){
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Wire.beginTransmission(_i2caddr);
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WIRE_WRITE(0x40);
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for (byte k = 0; k < 16; k++) {
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WIRE_WRITE(dat);
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}
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Wire.endTransmission();
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}
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}
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#ifdef TWBR
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TWBR = twbrbackup;
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#endif
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}
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void SSD1306::clear(byte x, byte y, byte width, byte height)
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{
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byte eline = (y + height) >> 3;
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y >>= 3;
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uint16_t xfersize = width * height >> 3;
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if (( y & 0x07) + (height & 0x07) > 7) {
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eline++;
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xfersize += width;
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}
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ssd1306_command2( 0x20, 0x00); // memory addressing mode: horizontal
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ssd1306_command3( 0x21, x, (x+width)-1); // column start/end
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ssd1306_command3( 0x22, y, eline-1); // page address start/end
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#ifdef TWBR
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uint8_t twbrbackup = TWBR;
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TWBR = 18; // upgrade to 400KHz!
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#endif
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uint16_t i = 0;
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while( i < xfersize) {
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Wire.beginTransmission(_i2caddr);
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WIRE_WRITE(0x40);
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for( byte j = 0; j < I2C_BLT_SIZE; j++, i++){
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WIRE_WRITE(0);
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}
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Wire.endTransmission();
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}
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#ifdef TWBR
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TWBR = twbrbackup;
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#endif
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}
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/* void SSD1306::draw8x8(byte* buffer, uint8_t x, uint8_t y)
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{
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// send a bunch of data in one xmission
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ssd1306_command(0xB0 + y);//set page address
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ssd1306_command(x & 0xf);//set lower column address
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ssd1306_command(0x10 | (x >> 4));//set higher column address
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Wire.beginTransmission(_i2caddr);
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WIRE_WRITE(0x40);
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WIRE_WRITE(buffer, 8);
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Wire.endTransmission();
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}
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*/
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