Graphics library for the Varitronix COG-VLGEM1277-01 Display.
Currently available at pollin.de
Some more information about how to connect to a µC can be found at mikrocontroller.net
#include "cog_vlgem1277_lcd.h"
#include "font_mono6x8.h"2) Create an instance of the class with the SPI pin connected to the µC, e.g. the standard ESP32 SPI bus (5,18,23 and 17 for Address-Bit)
COG_VLGEM1277 lcd(PIN_CS,PIN_SCK,PIN_MOSI,PIN_A0);void setup() {
lcd.Begin();
}lcd.DrawRect( 0,18,98,32);
lcd.DrawCircle(190,30,10,col_e::WHITE,col_e::BLACK);
lcd.SetFont(font);
lcd.SetCursor(0,0);
lcd.printf("DrawCircle() test ");
lcd.RefreshLCD();#include <Arduino.h>
#include <SPI.h>
#include "cog_vlgem1277_lcd.h"
#include "font_mono6x8.h"
#include "font_serif6x8.h"
#include "font_sans6x8.h"
#include "font_square6x8.h"
// Varitronix COG_VLGEM1277 LCD
constexpr uint8_t PIN_CS = 5; // PB2: CS (LCD[/CS]: Chip-Enable, low-active)
constexpr uint8_t PIN_SCK = 18; // PB5: SCK (LCD[SCL]: Serial Clock)
constexpr uint8_t PIN_MOSI = 23; // PB3: MOSI (LCD[SI]: Data In)
constexpr uint8_t PIN_A0 = 17; // PD3: A0 (LCD[A0]: LSB of Adress Bus: 0=Commands/1=Data)
COG_VLGEM1277 lcd(PIN_CS,PIN_SCK,PIN_MOSI,PIN_A0);
// lorem ipsum...
static const char bt00[] =
"Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed "
"diam nonumy eirmod tempor invidunt ut labore et dolore magna "
"aliquyam erat, sed diam voluptua. At vero eos et accusam et "
"justo duo dolores et ea rebum.\n"
;
// 8 lines of text
static const char bt01[] =
"2 ABCDEFGHIJKLMNOPQRSTUVWXYZ+-/.|\n"
"4 ----------1---------2---------3\n"
"3 0123456789-123456789-123456789.\n"
"5 aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOp\n"
"6 AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoP\n"
"7 Lorem ipsum dolor sit amet, con\n"
"8 HandglovesHamburgefontsRafgendu"
;
void test_font_alphabet(uint8_t *font, const char* font_name) {
int16_t fnt_ch_s=lcd.GetFontStartChar(); // start char of font
int16_t fnt_ch_e=lcd.GetFontEndChar(); // end char of font
int16_t fnt_h=lcd.GetFontHeight(); // char height
int16_t fnt_w=lcd.GetFontWidth(); // char width
int16_t rc=0,ic=0,jc=0;
lcd.ClearScreen();
lcd.SetRefreshMode(mod_e::autoRefresh_OFF); // stop auto-refresh
lcd.SetFont(font);
lcd.SetCursor(0,0);
lcd.printf("%s %dx%d ch[%d-%d]",font_name,fnt_w,fnt_h,fnt_ch_s,fnt_ch_e);
for(rc=0,ic=fnt_ch_s;rc <= ((fnt_ch_e-fnt_ch_s)/32); rc++ ) {
lcd.printf("\n%03d-%03d ",ic,ic+31);
for(jc=0; jc<32 && ic<fnt_ch_e;jc++, ic++){
lcd.DrawChar(ic);
}
}
lcd.RefreshLCD(); // do refresh now
delay(4000);
lcd.SetRefreshMode(mod_e::autoRefresh_OFF);
lcd.printf("\n1 %s\n%s",font_name,bt01);
lcd.RefreshLCD();
delay(10000);
}
void test_font_typewriter(uint8_t *font, const char *font_name) {
lcd.ClearScreen();
lcd.SetRefreshMode(mod_e::autoRefresh_ON);
lcd.SetFont(font);
lcd.SetCursor(0,0);
lcd.printf("%s in typewriter mode\n\n",font_name);
lcd.DrawString(bt00,50); // print text typewriter
delay(4000);
}
void test_rectangle(void) {
lcd.ClearScreen();
lcd.SetRefreshMode(mod_e::autoRefresh_ON); // automatic refresh
lcd.SetFont((uint8_t *)Mono6x8);
lcd.SetCursor(2,2);
lcd.printf("DrawRect() test");
lcd.DrawRect( 0,18,98,32);
lcd.DrawRect( 2,20,12,30);
lcd.DrawRect(14,20,24,30);
lcd.DrawRect(26,20,36,30);
lcd.DrawRect(38,20,48,30);
lcd.DrawRect(50,20,60,30);
lcd.DrawRect(62,20,72,30);
lcd.DrawRect(74,20,84,30);
lcd.DrawRect(86,20,96,30);
lcd.SetCursor(102,20);
lcd.printf("10x10");
lcd.DrawRect( 0,38,98,52,col_e::WHITE,col_e::BLACK,pat_e::solid);
lcd.DrawRect( 2,40,12,50,col_e::WHITE,col_e::BLACK,pat_e::dotted);
lcd.DrawRect( 14,40,24,50,col_e::WHITE,col_e::BLACK,pat_e::dotted);
lcd.DrawRect( 26,40,36,50,col_e::WHITE,col_e::BLACK,pat_e::dotted);
lcd.DrawRect( 38,40,48,50,col_e::WHITE,col_e::BLACK,pat_e::dotted);
lcd.DrawRect( 50,40,60,50,col_e::WHITE,col_e::BLACK,pat_e::dotted);
lcd.DrawRect( 62,40,72,50,col_e::WHITE,col_e::BLACK,pat_e::dotted);
lcd.DrawRect( 74,40,84,50,col_e::WHITE,col_e::BLACK,pat_e::dotted);
lcd.DrawRect( 86,40,96,50,col_e::WHITE,col_e::BLACK,pat_e::dotted);
lcd.SetCursor(102,40);
lcd.printf("dotted");
lcd.RefreshLCD();
delay(2000);
lcd.SetCursor(2,2);
lcd.printf("DrawCircle() test ");
lcd.DrawCircle(190,30,25,col_e::WHITE,col_e::GREY); delay(1000);
lcd.DrawCircle(190,30,20);delay(1000);
lcd.DrawCircle(190,30,15,col_e::WHITE,col_e::GREY); delay(1000);
lcd.DrawCircle(190,30,10,col_e::WHITE,col_e::BLACK);delay(1000);
lcd.RefreshLCD();
delay(2000);
}
void test_lines(void) {
lcd.ClearScreen();
lcd.DrawRect(0,0,xMax,63);
lcd.SetFont((uint8_t *)Mono6x8);
lcd.SetCursor(2,2);
lcd.printf("DrawLine() test");
lcd.RefreshLCD();
delay(1000);
lcd.SetRefreshMode(mod_e::autoRefresh_OFF);
lcd.DrawRect(0,0,xMax,63);
for(uint8_t kc=0;kc<2;kc++) {
lcd.SetRefreshMode(mod_e::autoRefresh_ON); // automatic refresh
for (uint8_t ic=0;ic<240;ic+=10) { lcd.DrawLine(119,31,ic,0); }
for (uint8_t ic=0;ic< 64;ic+= 8) { lcd.DrawLine(119,31,xMax,ic); }
for (uint8_t ic=0;ic<240;ic+=10) { lcd.DrawLine(119,31,xMax-ic,63); }
for (uint8_t ic=0;ic< 64;ic+= 8) { lcd.DrawLine(119,31,0,63-ic); }
for (uint8_t ic=0;ic<240;ic+=10) { lcd.DrawLine(119,31, ic,0,col_e::BLACK); }
lcd.DrawLine(0,0,xMax,0);
for (uint8_t ic=0;ic< 64;ic+= 8) { lcd.DrawLine(119,31,xMax,ic,col_e::BLACK); }
lcd.DrawLine(xMax,0,xMax,63);
for (uint8_t ic=0;ic<240;ic+=10) { lcd.DrawLine(119,31,xMax-ic,63,col_e::BLACK); }
lcd.DrawLine(xMax,63,0,63);
for (uint8_t ic=0;ic< 64;ic+= 8) { lcd.DrawLine(119,31,0,63-ic,col_e::BLACK); }
lcd.DrawLine(0,63,0,0);
delay(1000);
}
}
void setup() {
lcd.Begin();
}
void loop() {
test_font_alphabet( (uint8_t *)Mono6x8, "Mono6x8");
test_font_alphabet( (uint8_t *)Serif6x8, "Serif6x8");
test_font_alphabet( (uint8_t *)Sans6x8, "Sans6x8");
test_font_alphabet( (uint8_t *)Square6x8,"Square6x8");
test_font_typewriter((uint8_t *)Mono6x8, "Mono6x8" );
test_font_typewriter((uint8_t *)Serif6x8, "Serif6x8");
test_font_typewriter((uint8_t *)Sans6x8, "Sans6x8");
test_font_typewriter((uint8_t *)Square6x8,"Square6x8");
test_rectangle();
test_lines();
}