nodemcu Adafruit_SSD1306 D1D2 冲突解决

重新初始化 wire 到 D5D6

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

Wire.begin(14,12);

/*********************************************************************
This is an example for our Monochrome OLEDs based on SSD1306 driversPick one up today in the adafruit shop!------> http://www.adafruit.com/category/63_98This example is for a 128x64 size display using I2C to communicate
3 pins are required to interface (2 I2C and one reset)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 must be included in any redistribution
*********************************************************************/#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET 4//Adafruit_SSD1306 display(OLED_RESET);
//TwoWire  Wire;Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, 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!");
#endifvoid setup()   {                Serial.begin(9600);Wire.begin(14,12);  //D5 .D6  sda/sdl// by default, we'll generate the high voltage from the 3.3v line internally! (neat!)display.begin(SSD1306_SWITCHCAPVCC, 0x3C);  // initialize with the I2C addr 0x3D (for the 128x64)// init done// Show image buffer on the display hardware.// Since the buffer is intialized with an Adafruit splashscreen// internally, this will display the splashscreen.display.display();delay(2000);// Clear the buffer.display.clearDisplay();// draw a single pixeldisplay.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 linestestdrawline();display.display();delay(2000);display.clearDisplay();// draw rectanglestestdrawrect();display.display();delay(2000);display.clearDisplay();// draw multiple rectanglestestfillrect();display.display();delay(2000);display.clearDisplay();// draw mulitple circlestestdrawcircle();display.display();delay(2000);display.clearDisplay();// draw a white circle, 10 pixel radiusdisplay.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 fonttestdrawchar();display.display();delay(2000);display.clearDisplay();// draw scrolling texttestscrolltext();delay(2000);display.clearDisplay();// text display testsdisplay.setTextSize(1);display.setTextColor(WHITE);display.setCursor(0,0);display.println("Hello, world!");display.setTextColor(BLACK, WHITE); // 'inverted' textdisplay.println(3.141592);display.setTextSize(2);display.setTextColor(WHITE);display.print("0x"); display.println(0xDEADBEEF, HEX);display.display();delay(2000);display.clearDisplay();// miniature bitmap displaydisplay.drawBitmap(30, 16,  logo16_glcd_bmp, 16, 16, 1);display.display();delay(1);// invert the displaydisplay.invertDisplay(true);delay(1000); display.invertDisplay(false);delay(1000); display.clearDisplay();// draw a bitmap icon and 'animate' movementtestdrawbitmap(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];// initializefor (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 iconfor (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 itfor (uint8_t f=0; f< NUMFLAKES; f++) {display.drawBitmap(icons[f][XPOS], icons[f][YPOS], bitmap, w, h, BLACK);// move iticons[f][YPOS] += icons[f][DELTAY];// if its gone, reinitif (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();delay(1);
}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();delay(1);}
}void testfillrect(void) {uint8_t color = 1;for (int16_t i=0; i<display.height()/2; i+=3) {// alternate colorsdisplay.fillRect(i, i, display.width()-i*2, display.height()-i*2, color%2);display.display();delay(1);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();delay(1);}
}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();delay(1);}
}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();delay(1);}
}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();delay(1);}
}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();delay(1);}
}void testdrawline() {  for (int16_t i=0; i<display.width(); i+=4) {display.drawLine(0, 0, i, display.height()-1, WHITE);display.display();delay(1);}for (int16_t i=0; i<display.height(); i+=4) {display.drawLine(0, 0, display.width()-1, i, WHITE);display.display();delay(1);}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();delay(1);}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(1);}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();delay(1);}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(1);}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();delay(1);}for (int16_t i=0; i<display.width(); i+=4) {display.drawLine(display.width()-1, 0, i, display.height()-1, WHITE); display.display();delay(1);}delay(250);
}void testscrolltext(void) {display.setTextSize(2);display.setTextColor(WHITE);display.setCursor(10,0);display.clearDisplay();display.println("scroll");display.display();delay(1);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();
}

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nodemcu Adafruit_SSD1306 D1D2 冲突解决

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