Problems with my oled display.

[AceP996]

![Uploading IMG-20171020-WA0009.jpeg…]()

Recently i bought an oled display and am having some issues with it. 1 °: I do not know what his model, the seller did not specify in the advertisement ... he has 6 pins (VCC, GND, CLK, MOSI, CS and D / C) he is 128x64. 2 °: The image is being scrambled, not printing correctly on the display, and I do not know how to solve this problem. If anyone can help me, I appreciate it.

[olikraus]

Which constructor did you use to produce the pictures above? Can provide a picture from a standard u8g2 example, e.g. HelloWorld

[olikraus]

also, please consider to use u8g2. I am not working on u8glib any more.

[AceP996]

I'm using the U8GLIB_SSD1306_128X64 u8g constructor (10, 9, 12, 11);

[olikraus]

maybe you should try the SH1106 constructor.

[AceP996]

this constructor is not working in the compiler.

[Gabapentin]

Hi, ACE We can see your entire sketch code to try? Please upload

[AceP996]

the problem of the image being scrambled I managed to solve. but now a new problem has appeared ... when I use a delay, even if it is 0.1 seconds, the display is too slow to update or even update, for example, when I make a clock using the display, I have a lot of problems if I use the delay. Code that i am using:

include

include

DS3231 rtc(SDA, SCL); U8GLIB_SSD1306_128X64 u8g(10, 9, 12, 11);
const int LM35 = A0; // Define o pino que lera a saída do LM35 float temperatura; // Variável que armazenará a temperatura medida

void mostrarHora(void){ //funcoes do display pra mostrar horas u8g.setFont(u8g_font_osr21); //char *tempo = rtc.getTimeStr(); //tempo[5] = '\0'; u8g.drawStr(10, 57, rtc.getTimeStr());

u8g.drawRFrame(0,18, 128, 46, 4); }

/ void mostrarTemperatura(void){ temperatura = (float(analogRead(LM35))5/(1023))/0.01; //String temp = String(temperatr) //Serial.println(temperatura); String temp = String(temperatura); char *aux = temp[0]; u8g.setFont(u8g_font_fub30); u8g.drawStr(10, 57, aux); }

*/

void setup() { //configurações // Inicialização da comunicação Serial.begin(9600); // Initialização do rtc rtc.begin(); rtc.setDOW(SUNDAY); // Deve ser alterado o dia da semana para o dia em que estás em inglês rtc.setTime(15, 0, 0); // Escreve as horas no formato 12:00:00 (formato 24 horas) rtc.setDate(22, 10, 2017); // Escreve a data de acordo com o sistema que utilizas DD, MM, AAAA // Este programa escreve a data e hora no RTC e o relógio fica a trabalhar if ( u8g.getMode() == U8G_MODE_R3G3B2 ) { u8g.setColorIndex(255); // white } else if ( u8g.getMode() == U8G_MODE_GRAY2BIT ) { u8g.setColorIndex(3); // max intensity } else if ( u8g.getMode() == U8G_MODE_BW ) { u8g.setColorIndex(1); // pixel on } else if ( u8g.getMode() == U8G_MODE_HICOLOR ) { u8g.setHiColorByRGB(255,255,255); }

}

void loop() { u8g.firstPage(); while(u8g.nextPage()){ mostrarHora(); delay(1000); } }

[Code1110]

You need to change your code to sth. like this:

void mostrarHora(void){
    //funcoes do display pra mostrar horas
    char *tempo = rtc.getTimeStr();
    //tempo[5] = '\0';

    u8g.firstPage();
    while(u8g.nextPage())
    {
        u8g.setFont(u8g_font_osr21);
        u8g.drawStr(10, 57, tempo);
        u8g.drawRFrame(0,18, 128, 46, 4);
    }
}

void loop() {
    mostrarHora();
    delay(1000);
}

You had at least two issues:

• You are getting the time again and again before it has been written to the display.
• You had the delay inside of the diplay-writing loop.