Ejemplo de uso de pantalla (Arduino)

Conectar la Pantalla en el puerto COM7, ya que es el que tiene el I2c

Para realizar la lectura de la pantalla OLED usaremos la librería desarrollada por Adafruit, disponible en este enlace. A su vez necesita la librería Adafruit GFX para realizar gráficos.

Descargue e instale estas librerìas en Arduino y despues pruebe el programa ejemplo:

#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <Fonts/FreeSansOblique12pt7b.h>

#define OLED_RESET 4
Adafruit_SSD1306 display(OLED_RESET);

#define NUMFLAKES 10
#define XPOS 0
#define YPOS 1
#define DELTAY 2

#define LOGO16_GLCD_HEIGHT 16
#define LOGO16_GLCD_WIDTH 16
static const unsigned char PROGMEM logo16_glcd_bmp[] =
{ B00000000, B11000000,
B00000001, B11000000,
B00000001, B11000000,
B00000011, B11100000,
B11110011, B11100000,
B11111110, B11111000,
B01111110, B11111111,
B00110011, B10011111,
B00011111, B11111100,
B00001101, B01110000,
B00011011, B10100000,
B00111111, B11100000,
B00111111, B11110000,
B01111100, B11110000,
B01110000, B01110000,
B00000000, B00110000 };

#if (SSD1306_LCDHEIGHT != 64)
#error(«Height incorrect, please fix Adafruit_SSD1306.h!»);
#endif

void setup() {
Serial.begin(9600);

display.begin(SSD1306_SWITCHCAPVCC, 0x3C); // initialize with the I2C addr 0x3C (for the 128×64)
// init done
// Show image buffer on the display hardware.
display.display();
delay(8000);

// Clear the buffer.
display.clearDisplay();

/* // draw a single pixel
display.drawPixel(10, 10, WHITE);
// Show the display buffer on the hardware.
// NOTE: You _must_ call display after making any drawing commands
// to make them visible on the display hardware!
display.display();
delay(2000);
display.clearDisplay();

// draw many lines
testdrawline();
display.display();
delay(2000);
display.clearDisplay();

// draw rectangles
testdrawrect();
display.display();
delay(2000);
display.clearDisplay();

// draw multiple rectangles
testfillrect();
display.display();
delay(2000);
display.clearDisplay();

// draw mulitple circles
testdrawcircle();
display.display();
delay(2000);
display.clearDisplay();

// draw a white circle, 10 pixel radius
display.fillCircle(display.width()/2, display.height()/2, 10, WHITE);
display.display();
delay(2000);
display.clearDisplay();

testdrawroundrect();
delay(2000);
display.clearDisplay();

testfillroundrect();
delay(2000);
display.clearDisplay();

testdrawtriangle();
delay(2000);
display.clearDisplay();

testfilltriangle();
delay(2000);
display.clearDisplay();

// draw the first ~12 characters in the font
testdrawchar();
display.display();
delay(2000);
display.clearDisplay();

// draw scrolling text
testscrolltext();
delay(2000);
display.clearDisplay();

// text display tests
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0,0);
display.println(«Hello, world!»);
display.setTextColor(BLACK, WHITE); // ‘inverted’ text
display.println(3.141592);
display.setTextSize(2);
display.setTextColor(WHITE);
display.print(«0x»); display.println(0xDEADBEEF, HEX);
display.display();
delay(2000);
display.clearDisplay();

// miniature bitmap display
display.drawBitmap(30, 16, logo16_glcd_bmp, 16, 16, 1);
display.display();

// invert the display
display.invertDisplay(true);
delay(1000);
display.invertDisplay(false);
delay(1000);
display.clearDisplay();

// draw a bitmap icon and ‘animate’ movement
testdrawbitmap(logo16_glcd_bmp, LOGO16_GLCD_HEIGHT, LOGO16_GLCD_WIDTH);*/
}

void loop() {
/*DateTime now = rtc.now();
int sensorValue;
float voltage;
float temp;
float temp1;

for (int i = 0; i<10 ; i++)
{
sensorValue = analogRead(A1);
voltage= sensorValue * 5 / 1024.0;
temp = voltage – 0.5;
temp = temp – 0.0644; //Calibration
temp = temp / 0.01;
temp1=temp1+temp;
delay(500);
}

temp=temp1/10;

float tempf = (temp * 1.8) + 32;*/
display.drawRect(0, 0, display.width(), display.height(), WHITE);
display.drawRect(1, 1, display.width()-2, display.height()-2, WHITE);
display.drawLine(0, 32, display.width(), 32, WHITE);
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(18,18);
display.setFont(&FreeSansOblique12pt7b);
display.print(«25.0»);
display.setFont();
display.setCursor(85,6);
display.print(«o»);
display.setFont(&FreeSansOblique12pt7b);
display.setCursor(90,25);
display.print(«C»);
display.setFont();
/*
display.fillRect(0 , 33, display.width(), display.height(), WHITE);
display.setTextColor(BLACK);
display.setCursor(18,50);
display.setFont(&FreeSansOblique12pt7b);
display.print(now.hour(), DEC);
display.print(‘:’);
display.print(now.minute(), DEC);
display.print(‘:’);
display.print(now.second(), DEC);
/*display.setFont();
display.setCursor(85,38);
display.print(«o»);
display.setFont(&FreeSansOblique12pt7b);
display.setCursor(90,57);
display.print(«F»);
display.setFont();
display.setCursor(3,13);
display.print(voltage);
display.print(» V»);
display.setCursor(3,23);
display.print(sensorValue);
display.print(» SENSOR»);*/
display.display();
//delay(100);
display.clearDisplay();

}

void testdrawbitmap(const uint8_t *bitmap, uint8_t w, uint8_t h) {
uint8_t icons[NUMFLAKES][3];

// initialize
for (uint8_t f=0; f< NUMFLAKES; f++) {
icons[f][XPOS] = random(display.width());
icons[f][YPOS] = 0;
icons[f][DELTAY] = random(5) + 1;

Serial.print(«x: «);
Serial.print(icons[f][XPOS], DEC);
Serial.print(» y: «);
Serial.print(icons[f][YPOS], DEC);
Serial.print(» dy: «);
Serial.println(icons[f][DELTAY], DEC);
}

while (1) {
// draw each icon
for (uint8_t f=0; f< NUMFLAKES; f++) {
display.drawBitmap(icons[f][XPOS], icons[f][YPOS], bitmap, w, h, WHITE);
}
display.display();
delay(200);

// then erase it + move it
for (uint8_t f=0; f< NUMFLAKES; f++) { display.drawBitmap(icons[f][XPOS], icons[f][YPOS], bitmap, w, h, BLACK); // move it icons[f][YPOS] += icons[f][DELTAY]; // if its gone, reinit if (icons[f][YPOS] > display.height()) {
icons[f][XPOS] = random(display.width());
icons[f][YPOS] = 0;
icons[f][DELTAY] = random(5) + 1;
}
}
}
}

void testdrawchar(void) {
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0,0);

for (uint8_t i=0; i < 168; i++) { if (i == ‘\n’) continue; display.write(i); if ((i > 0) && (i % 21 == 0))
display.println();
}
display.display();
}

void testdrawcircle(void) {
for (int16_t i=0; i<display.height(); i+=2) {
display.drawCircle(display.width()/2, display.height()/2, i, WHITE);
display.display();
}
}

void testfillrect(void) {
uint8_t color = 1;
for (int16_t i=0; i<display.height()/2; i+=3) {
// alternate colors
display.fillRect(i, i, display.width()-i*2, display.height()-i*2, color%2);
display.display();
color++;
}
}

void testdrawtriangle(void) {
for (int16_t i=0; i<min(display.width(),display.height())/2; i+=5) { display.drawTriangle(display.width()/2, display.height()/2-i, display.width()/2-i, display.height()/2+i, display.width()/2+i, display.height()/2+i, WHITE); display.display(); } } void testfilltriangle(void) { uint8_t color = WHITE; for (int16_t i=min(display.width(),display.height())/2; i>0; i-=5) {
display.fillTriangle(display.width()/2, display.height()/2-i,
display.width()/2-i, display.height()/2+i,
display.width()/2+i, display.height()/2+i, WHITE);
if (color == WHITE) color = BLACK;
else color = WHITE;
display.display();
}
}

void testdrawroundrect(void) {
for (int16_t i=0; i<display.height()/2-2; i+=2) {
display.drawRoundRect(i, i, display.width()-2*i, display.height()-2*i, display.height()/4, WHITE);
display.display();
}
}

void testfillroundrect(void) {
uint8_t color = WHITE;
for (int16_t i=0; i<display.height()/2-2; i+=2) {
display.fillRoundRect(i, i, display.width()-2*i, display.height()-2*i, display.height()/4, color);
if (color == WHITE) color = BLACK;
else color = WHITE;
display.display();
}
}

void testdrawrect(void) {
for (int16_t i=0; i<display.height()/2; i+=2) {
display.drawRect(i, i, display.width()-2*i, display.height()-2*i, WHITE);
display.display();
}
}

void testdrawline() {
for (int16_t i=0; i<display.width(); i+=4) {
display.drawLine(0, 0, i, display.height()-1, WHITE);
display.display();
}
for (int16_t i=0; i<display.height(); i+=4) {
display.drawLine(0, 0, display.width()-1, i, WHITE);
display.display();
}
delay(250);

display.clearDisplay();
for (int16_t i=0; i<display.width(); i+=4) { display.drawLine(0, display.height()-1, i, 0, WHITE); display.display(); } for (int16_t i=display.height()-1; i>=0; i-=4) {
display.drawLine(0, display.height()-1, display.width()-1, i, WHITE);
display.display();
}
delay(250);

display.clearDisplay();
for (int16_t i=display.width()-1; i>=0; i-=4) {
display.drawLine(display.width()-1, display.height()-1, i, 0, WHITE);
display.display();
}
for (int16_t i=display.height()-1; i>=0; i-=4) {
display.drawLine(display.width()-1, display.height()-1, 0, i, WHITE);
display.display();
}
delay(250);

display.clearDisplay();
for (int16_t i=0; i<display.height(); i+=4) {
display.drawLine(display.width()-1, 0, 0, i, WHITE);
display.display();
}
for (int16_t i=0; i<display.width(); i+=4) {
display.drawLine(display.width()-1, 0, i, display.height()-1, WHITE);
display.display();
}
delay(250);
}

void testscrolltext(void) {
display.setTextSize(2);
display.setTextColor(WHITE);
display.setCursor(10,0);
display.clearDisplay();
display.println(«scroll»);
display.display();

display.startscrollright(0x00, 0x0F);
delay(2000);
display.stopscroll();
delay(1000);
display.startscrollleft(0x00, 0x0F);
delay(2000);
display.stopscroll();
delay(1000);
display.startscrolldiagright(0x00, 0x07);
delay(2000);
display.startscrolldiagleft(0x00, 0x07);
delay(2000);
display.stopscroll();
}