256 lines
6.4 KiB
C++
256 lines
6.4 KiB
C++
#ifndef LCD_SSD1306
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#define LCD_SSD1306
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#include "../../io/SoftI2C.h"
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//#define SSD1306_128_64 1
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//#define SSD1306_64_48 1 // https://github.com/mcauser/Adafruit_SSD1306/blob/esp8266-64x48/Adafruit_SSD1306.cpp
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#if defined SSD1306_128_64
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#define SSD1306_LCDWIDTH 128
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#define SSD1306_LCDHEIGHT 64
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#elif defined SSD1306_128_32
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#define SSD1306_LCDWIDTH 128
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#define SSD1306_LCDHEIGHT 32
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#elif defined SSD1306_96_16
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#define SSD1306_LCDWIDTH 96
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#define SSD1306_LCDHEIGHT 16
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#elif defined SSD1306_64_48
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#define SSD1306_LCDWIDTH 64
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#define SSD1306_LCDHEIGHT 48
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#else
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#error "SSD1306 display size not defined"
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#endif
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#define SSD1306_SETCONTRAST 0x81
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#define SSD1306_DISPLAYALLON_RESUME 0xA4
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#define SSD1306_DISPLAYALLON 0xA5
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#define SSD1306_NORMALDISPLAY 0xA6
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#define SSD1306_INVERTDISPLAY 0xA7
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#define SSD1306_DISPLAYOFF 0xAE
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#define SSD1306_DISPLAYON 0xAF
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#define SSD1306_SETDISPLAYOFFSET 0xD3
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#define SSD1306_SETCOMPINS 0xDA
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#define SSD1306_SETVCOMDETECT 0xDB
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#define SSD1306_SETDISPLAYCLOCKDIV 0xD5
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#define SSD1306_SETPRECHARGE 0xD9
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#define SSD1306_SETMULTIPLEX 0xA8
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#define SSD1306_SETLOWCOLUMN 0x00
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#define SSD1306_SETHIGHCOLUMN 0x10
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#define SSD1306_SETSTARTLINE 0x40
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#define SSD1306_MEMORYMODE 0x20
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#define SSD1306_COLUMNADDR 0x21
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#define SSD1306_PAGEADDR 0x22
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#define SSD1306_COMSCANINC 0xC0
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#define SSD1306_COMSCANDEC 0xC8
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#define SSD1306_SEGREMAP 0xA0
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#define SSD1306_CHARGEPUMP 0x8D
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#define SSD1306_EXTERNALVCC 0x1
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#define SSD1306_SWITCHCAPVCC 0x2
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// Scrolling #defines
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#define SSD1306_ACTIVATE_SCROLL 0x2F
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#define SSD1306_DEACTIVATE_SCROLL 0x2E
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#define SSD1306_SET_VERTICAL_SCROLL_AREA 0xA3
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#define SSD1306_RIGHT_HORIZONTAL_SCROLL 0x26
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#define SSD1306_LEFT_HORIZONTAL_SCROLL 0x27
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#define SSD1306_VERTICAL_AND_RIGHT_HORIZONTAL_SCROLL 0x29
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#define SSD1306_VERTICAL_AND_LEFT_HORIZONTAL_SCROLL 0x2A
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class SSD1306 {
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private:
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static constexpr uint8_t ADDR7 = 0b0111100;
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bool inited = false;
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public:
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bool isPresent() {
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return i2c::query(ADDR7);
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}
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void initOnce() {
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if (inited) {return;}
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init();
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inited = true;
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}
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void flush(const uint8_t* data) {
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sendCommand(SSD1306_COLUMNADDR);
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// special handling for 64x48 oled shield
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#if SSD1306_LCDWIDTH == 64 && SSD1306_LCDHEIGHT == 48
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sendCommand(32);
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sendCommand(32 + SSD1306_LCDWIDTH - 1);
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#else
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sendCommand(0); // Column start address (0 = reset)
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sendCommand(SSD1306_LCDWIDTH-1); // Column end address (127 = reset)
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#endif
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sendCommand(SSD1306_PAGEADDR);
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sendCommand(0); // Page start address (0 = reset)
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sendCommand( (SSD1306_LCDHEIGHT/8)-1 ); // Page end address
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// #if SSD1306_LCDHEIGHT == 64
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// sendCommand(7); // Page end address
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// #endif
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// #if SSD1306_LCDHEIGHT == 48
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// sendCommand(3); // Page end address
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// #endif
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// #if SSD1306_LCDHEIGHT == 32
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// sendCommand(3); // Page end address
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// #endif
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// #if SSD1306_LCDHEIGHT == 16
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// sendCommand(1); // Page end address
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// #endif
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// for (uint16_t i=0; i<(SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) {
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// // send a bunch of data in one xmission
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// i2c::startWrite(ADDR7);
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// bool ok = i2c::writeByteAndCheck(0x40);
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// if (!ok) {os_printf("failed line\n");}
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// for (uint8_t x = 0; x < 16; ++x) {
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// i2c::writeByteAndCheck(data[i]);
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// ++i;
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// }
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// i--;
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// i2c::stop();
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// }
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i2c::startWrite(ADDR7);
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bool ok = i2c::writeByteAndCheck(0x40);
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if (!ok) {os_printf("failed write data\n");}
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for (uint16_t i=0; i < (SSD1306_LCDWIDTH*SSD1306_LCDHEIGHT/8); i++) {
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i2c::writeByteAndCheck(data[i]);
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}
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i2c::stop();
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}
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private:
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void init() {
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uint8_t vccstate = 0;
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sendCommand(SSD1306_DISPLAYOFF); // 0xAE
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sendCommand(SSD1306_SETDISPLAYCLOCKDIV); // 0xD5
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sendCommand(0x80); // the suggested ratio 0x80
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sendCommand(SSD1306_SETMULTIPLEX); // 0xA8
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sendCommand(SSD1306_LCDHEIGHT - 1);
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sendCommand(SSD1306_SETDISPLAYOFFSET); // 0xD3
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sendCommand(0x0); // no offset
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sendCommand(SSD1306_SETSTARTLINE | 0x0); // line #0
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sendCommand(SSD1306_CHARGEPUMP); // 0x8D
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if (vccstate == SSD1306_EXTERNALVCC) {
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sendCommand(0x10);
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} else {
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sendCommand(0x14);
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}
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sendCommand(SSD1306_MEMORYMODE); // 0x20
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sendCommand(0x00); // 0x0 act like ks0108
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sendCommand(SSD1306_SEGREMAP | 0x1);
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sendCommand(SSD1306_COMSCANDEC); // rotate 180?
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// OLD
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// #if defined SSD1306_128_32
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// sendCommand(SSD1306_SETCOMPINS); // 0xDA
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// sendCommand(0x02);
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// sendCommand(SSD1306_SETCONTRAST); // 0x81
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// sendCommand(0x8F);
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// #elif defined SSD1306_128_64
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// sendCommand(SSD1306_SETCOMPINS); // 0xDA
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// sendCommand(0x12);
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// sendCommand(SSD1306_SETCONTRAST); // 0x81
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// if (vccstate == SSD1306_EXTERNALVCC)
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// { sendCommand(0x9F); }
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// else
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// { sendCommand(0xCF); }
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// #elif defined SSD1306_96_16
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// sendCommand(SSD1306_SETCOMPINS); // 0xDA
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// sendCommand(0x2); //ada x12
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// sendCommand(SSD1306_SETCONTRAST); // 0x81
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// if (vccstate == SSD1306_EXTERNALVCC)
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// { sendCommand(0x10); }
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// else
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// { sendCommand(0xAF); }
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// #endif
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// NEW
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sendCommand(SSD1306_SETCOMPINS); // 0xDA
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sendCommand(0x12);
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if (vccstate == SSD1306_EXTERNALVCC) {
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sendCommand(0x9F);
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} else {
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sendCommand(0xCF);
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}
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sendCommand(SSD1306_SETPRECHARGE); // 0xd9
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if (vccstate == SSD1306_EXTERNALVCC) {
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sendCommand(0x22);
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} else {
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sendCommand(0xF1);
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}
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sendCommand(SSD1306_SETVCOMDETECT); // 0xDB
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sendCommand(0x40);
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sendCommand(SSD1306_DISPLAYALLON_RESUME); // 0xA4
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sendCommand(SSD1306_NORMALDISPLAY); // 0xA6
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sendCommand(SSD1306_DEACTIVATE_SCROLL);
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sendCommand(SSD1306_DISPLAYON);//--turn on oled panel
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}
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private:
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void sendCommand(uint8_t cmd) {
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bool ok;
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ok = i2c::startWrite(ADDR7);
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if (!ok) {os_printf("failed start write\n");}
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ok = i2c::writeByteAndCheck(0x00); // command
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if (!ok) {os_printf("failed command mode\n");}
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ok = i2c::writeByteAndCheck(cmd);
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if (!ok) {os_printf("failed command\n");}
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i2c::stop();
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}
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};
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#endif
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