arduino - Adafruit 1.5" & 2.1" モノクロ 128x64 OLED ディスプレイ モジュール SPI が動作しない

Question

私はこのチュートリアルに従っています。

https://learn.adafruit.com/1-5-and-2-1-monochrome-128x64-oled-display-module/wiring-and-test

何らかの理由で、古い画面から生命が得られません。すべてのピンの電圧を確認しましたが、本来あるべき状態 (約 3v) です。抵抗は SPI 用に正しく配置されています。

コードの場合、この例を使用して

    /*********************************************************************
This is a library for our Monochrome OLEDs based on SSD1305 drivers

  Pick one up today in the adafruit shop!
  ------> https://www.adafruit.com/products/2675

These displays use SPI or I2C to communicate, 3-5 pins are required to  
interface

Adafruit invests time and resources providing this open source code, 
please support Adafruit and open-source hardware by purchasing 
products from Adafruit!

Written by Limor Fried/Ladyada  for Adafruit Industries.  
BSD license, check license.txt for more information
All text above, and the splash screen below must be included in any redistribution
*********************************************************************/

#include <Wire.h>
#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1305.h>

// Used for software SPI
#define OLED_CLK 13
#define OLED_MOSI 11

// Used for software or hardware SPI
#define OLED_CS 10
#define OLED_DC 8

// Used for I2C or SPI
#define OLED_RESET 9

// software SPI
Adafruit_SSD1305 display(OLED_MOSI, OLED_CLK, OLED_DC, OLED_RESET, OLED_CS);
// hardware SPI
//Adafruit_SSD1305 display(OLED_DC, OLED_RESET, OLED_CS);

// I2C
//Adafruit_SSD1305 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 };

void fill(unsigned char dat1,unsigned char dat2)
{
  unsigned char x,y;
  for(y=0;y<8;y++)
  {
    display.command(0xb0+y);
    display.command(0x00);
    display.command(0x10);
    for(x=0;x<132;x++)
    {
      display.data(dat1);
      display.data(dat2);
    }
  }
}


void setup()   {                
  Serial.begin(9600);
  Serial.println("SSD1305 OLED test");

  // by default, we'll generate the high voltage from the 3.3v line internally! (neat!)
  display.begin();
  // init done

  display.display(); // show splashscreen
  delay(1000);
  display.clearDisplay();   // clears the screen and buffer

  // draw a single pixel
  display.drawPixel(10, 10, WHITE);
  display.display();
  delay(1000);
  display.clearDisplay();

  // draw many lines
  testdrawline();
  display.display();
  delay(1000);
  display.clearDisplay();

  // draw rectangles
  testdrawrect();
  display.display();
  delay(1000);
  display.clearDisplay();

  // draw multiple rectangles
  testfillrect();
  display.display();
  delay(1000);
  display.clearDisplay();

  // draw mulitple circles
  testdrawcircle();
  display.display();
  delay(1000);
  display.clearDisplay();

  // draw a white circle, 10 pixel radius
  display.fillCircle(display.width()/2, display.height()/2, 10, WHITE);
  display.display();
  delay(1000);
  display.clearDisplay();

  testdrawroundrect();
  delay(1000);
  display.clearDisplay();

  testfillroundrect();
  delay(1000);
  display.clearDisplay();

  testdrawtriangle();
  delay(1000);
  display.clearDisplay();

  testfilltriangle();
  delay(1000);
  display.clearDisplay();

  // draw the first ~12 characters in the font
  testdrawchar();
  display.display();
  delay(1000);
  display.clearDisplay();

  for (uint8_t rot=0; rot < 4; rot++) {
    display.setRotation(rot);
    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(1000);
  }

  display.setRotation(0);

  // miniature bitmap display
  display.clearDisplay();
  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); 

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


void loop() {
}


void testdrawbitmap(const uint8_t *bitmap, uint8_t w, uint8_t h) {
  uint8_t icons[NUMFLAKES][3];
  srandom(666);     // whatever seed

  // 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], logo16_glcd_bmp, 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],  logo16_glcd_bmp, 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.setTextWrap(false);
  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 (uint8_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 (uint8_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 (uint16_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 (uint8_t i=0; i<display.height()/3-2; 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 (uint8_t i=0; i<display.height()/3-2; 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 (uint8_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 (uint8_t i=0; i<display.width(); i+=4) {
    display.drawLine(0, 0, i, display.height()-1, WHITE);
    display.display();
  }
  for (uint8_t i=0; i<display.height(); i+=4) {
    display.drawLine(0, 0, display.width()-1, i, WHITE);
    display.display();
  }
  delay(250);

  display.clearDisplay();
  for (uint8_t i=0; i<display.width(); i+=4) {
    display.drawLine(0, display.height()-1, i, 0, WHITE);
    display.display();
  }
  for (int8_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 (int8_t i=display.width()-1; i>=0; i-=4) {
    display.drawLine(display.width()-1, display.height()-1, i, 0, WHITE);
    display.display();
  }
  for (int8_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 (uint8_t i=0; i<display.height(); i+=4) {
    display.drawLine(display.width()-1, 0, 0, i, WHITE);
    display.display();
  }
  for (uint8_t i=0; i<display.width(); i+=4) {
    display.drawLine(display.width()-1, 0, i, display.height()-1, WHITE); 
    display.display();
  }
  delay(250);
}

配線を二重および三重にチェックしました。これが単に欠陥のある画面であるかどうかを確認するために実行できる各ピンの電圧を測定する以外のチェックを知っている人はいますか?