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@ -3,7 +3,7 @@
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// mapping suggestion for ESP32, e.g. LOLIN32, see .../variants/.../pins_arduino.h for your board
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// NOTE: there are variants with different pins for SPI ! CHECK SPI PINS OF YOUR BOARD
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// BUSY -> 4, RST -> 16, DC -> 17, CS -> SS(5), CLK -> SCK(18), DIN -> MOSI(23), GND -> GND, 3.3V -> 3.3V
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// BUSY -> 4, RST -> 16, DC -> 17, CS -> SS(5), CLK -> (18), DIN -> MOSI(23), GND -> GND, 3.3V -> 3.3V
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// mapping of Waveshare Universal e-Paper Raw Panel Driver Shield for Arduino / NUCLEO
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// BUSY -> 7, RST -> 8, DC -> 9, CS-> 10, CLK -> 13, DIN -> 11
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@ -12,325 +12,105 @@
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// enable or disable GxEPD2_GFX base class
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#define ENABLE_GxEPD2_GFX 0
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GxEPD2_BW<GxEPD2_750, GxEPD2_750::HEIGHT> display(GxEPD2_750(/*CS=5*/ 5, /*DC=*/0, /*RST=*/2, /*BUSY=*/15));
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#include "bitmaps/Bitmaps640x384.h" // 7.5" b/w
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GxEPD2_BW<GxEPD2_750, GxEPD2_750::HEIGHT> display(GxEPD2_750(/*CS=*/ 5, /*DC=*/ 17, /*RST=*/ 16, /*BUSY=*/ 4));
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uint8_t _buffer[(GxEPD2_750::WIDTH / 8) * GxEPD2_750::HEIGHT];
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void setupDisplay()
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{
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//Serial.begin(115200);
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//Serial.println();
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Serial.println("setupDisplay");
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delay(100);
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display.init(115200);
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// first update should be full refresh
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helloWorld();
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delay(1000);
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// partial refresh mode can be used to full screen,
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// effective if display panel hasFastPartialUpdate
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helloFullScreenPartialMode();
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delay(1000);
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helloArduino();
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delay(1000);
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helloEpaper();
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delay(1000);
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//helloValue(123.9, 1);
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//delay(1000);
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showFont("FreeMonoBold9pt7b", &FreeMonoBold9pt7b);
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delay(1000);
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drawBitmaps();
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display.powerOff();
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deepSleepTest();
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Serial.println("setup done");
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}
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void updateDisplay_Neu(const unsigned char *bitmap)
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{
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Serial.println("Update Display #");
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display.setFullWindow();
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//drawBitmaps640x384();
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display.firstPage();
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do
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{
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display.fillScreen(GxEPD_WHITE);
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//display.drawBitmap(0, 0, bitmap, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
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display.drawInvertedBitmap(0, 0, bitmap, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
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} while (display.nextPage());
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}
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// note for partial update window and setPartialWindow() method:
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// partial update window size and position is on byte boundary in physical x direction
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// the size is increased in setPartialWindow() if x or w are not multiple of 8 for even rotation, y or h for odd rotation
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// see also comment in GxEPD2_BW.h, GxEPD2_3C.h or GxEPD2_GFX.h for method setPartialWindow()
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const char HelloWorld[] = "Hello World!";
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const char HelloArduino[] = "Hello Arduino!";
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const char HelloEpaper[] = "Hello E-Paper!";
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void helloWorld()
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void displayOpenFramebuffer()
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{
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//Serial.println("helloWorld");
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display.setRotation(1);
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display.setFont(&FreeMonoBold9pt7b);
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display.setTextColor(GxEPD_BLACK);
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int16_t tbx, tby;
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uint16_t tbw, tbh;
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display.getTextBounds(HelloWorld, 0, 0, &tbx, &tby, &tbw, &tbh);
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// center bounding box by transposition of origin:
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uint16_t x = ((display.width() - tbw) / 2) - tbx;
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uint16_t y = ((display.height() - tbh) / 2) - tby;
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display.setFullWindow();
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display.firstPage();
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do
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{
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display.fillScreen(GxEPD_WHITE);
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display.setCursor(x, y);
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display.print(HelloWorld);
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} while (display.nextPage());
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//Serial.println("helloWorld done");
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memset(_buffer, 0, sizeof(_buffer));
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//display.setFullWindow();
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//display.firstPage();
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//display.fillScreen(GxEPD_WHITE);
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}
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void helloWorldForDummies()
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// TODO
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void displayWriteFramebuffer(int offset, uint8_t bitmap[], int c)
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{
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//Serial.println("helloWorld");
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const char text[] = "Hello World!";
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// most e-papers have width < height (portrait) as native orientation, especially the small ones
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// in GxEPD2 rotation 0 is used for native orientation (most TFT libraries use 0 fix for portrait orientation)
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// set rotation to 1 (rotate right 90 degrees) to have enough space on small displays (landscape)
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display.setRotation(1);
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// select a suitable font in Adafruit_GFX
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display.setFont(&FreeMonoBold9pt7b);
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// on e-papers black on white is more pleasant to read
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display.setTextColor(GxEPD_BLACK);
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// Adafruit_GFX has a handy method getTextBounds() to determine the boundary box for a text for the actual font
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int16_t tbx, tby;
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uint16_t tbw, tbh; // boundary box window
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display.getTextBounds(text, 0, 0, &tbx, &tby, &tbw, &tbh); // it works for origin 0, 0, fortunately (negative tby!)
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// center bounding box by transposition of origin:
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uint16_t x = ((display.width() - tbw) / 2) - tbx;
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uint16_t y = ((display.height() - tbh) / 2) - tby;
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// full window mode is the initial mode, set it anyway
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display.setFullWindow();
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// here we use paged drawing, even if the processor has enough RAM for full buffer
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// so this can be used with any supported processor board.
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// the cost in code overhead and execution time penalty is marginal
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// tell the graphics class to use paged drawing mode
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display.firstPage();
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do
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for (int i = 0; i < c; i++)
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{
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// this part of code is executed multiple times, as many as needed,
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// in case of full buffer it is executed once
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// IMPORTANT: each iteration needs to draw the same, to avoid strange effects
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// use a copy of values that might change, don't read e.g. from analog or pins in the loop!
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display.fillScreen(GxEPD_WHITE); // set the background to white (fill the buffer with value for white)
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display.setCursor(x, y); // set the postition to start printing text
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display.print(text); // print some text
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// end of part executed multiple times
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_buffer[offset] = bitmap[i];
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offset++;
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}
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// tell the graphics class to transfer the buffer content (page) to the controller buffer
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// the graphics class will command the controller to refresh to the screen when the last page has been transferred
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// returns true if more pages need be drawn and transferred
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// returns false if the last page has been transferred and the screen refreshed for panels without fast partial update
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// returns false for panels with fast partial update when the controller buffer has been written once more, to make the differential buffers equal
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// (for full buffered with fast partial update the (full) buffer is just transferred again, and false returned)
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while (display.nextPage());
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//Serial.println("helloWorld done");
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}
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void helloFullScreenPartialMode()
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{
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//Serial.println("helloFullScreenPartialMode");
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const char fullscreen[] = "full screen update";
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const char fpm[] = "fast partial mode";
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const char spm[] = "slow partial mode";
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const char npm[] = "no partial mode";
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display.setPartialWindow(0, 0, display.width(), display.height());
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display.setRotation(1);
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display.setFont(&FreeMonoBold9pt7b);
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display.setTextColor(GxEPD_BLACK);
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const char *updatemode;
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if (display.epd2.hasFastPartialUpdate)
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{
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updatemode = fpm;
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}
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else if (display.epd2.hasPartialUpdate)
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/*
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//if (offset + sizeof(*bitmap) <= sizeof(_buffer))
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if (true)
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{
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updatemode = spm;
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memcpy((&_buffer) + offset, bitmap, 128);
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}
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else
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{
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updatemode = npm;
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Serial.println("!!!!! displayWriteFramebuffer overflow");
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}
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// do this outside of the loop
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int16_t tbx, tby;
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uint16_t tbw, tbh;
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// center update text
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display.getTextBounds(fullscreen, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t utx = ((display.width() - tbw) / 2) - tbx;
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uint16_t uty = ((display.height() / 4) - tbh / 2) - tby;
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// center update mode
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display.getTextBounds(updatemode, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t umx = ((display.width() - tbw) / 2) - tbx;
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uint16_t umy = ((display.height() * 3 / 4) - tbh / 2) - tby;
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// center HelloWorld
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display.getTextBounds(HelloWorld, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t hwx = ((display.width() - tbw) / 2) - tbx;
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uint16_t hwy = ((display.height() - tbh) / 2) - tby;
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display.firstPage();
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do
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{
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display.fillScreen(GxEPD_WHITE);
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display.setCursor(hwx, hwy);
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display.print(HelloWorld);
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display.setCursor(utx, uty);
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display.print(fullscreen);
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display.setCursor(umx, umy);
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display.print(updatemode);
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} while (display.nextPage());
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//Serial.println("helloFullScreenPartialMode done");
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*/
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}
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void helloArduino()
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{
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//Serial.println("helloArduino");
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display.setRotation(1);
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display.setFont(&FreeMonoBold9pt7b);
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display.setTextColor(display.epd2.hasColor ? GxEPD_RED : GxEPD_BLACK);
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int16_t tbx, tby;
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uint16_t tbw, tbh;
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// align with centered HelloWorld
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display.getTextBounds(HelloWorld, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t x = ((display.width() - tbw) / 2) - tbx;
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// height might be different
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display.getTextBounds(HelloArduino, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t y = ((display.height() / 4) - tbh / 2) - tby; // y is base line!
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// make the window big enough to cover (overwrite) descenders of previous text
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uint16_t wh = FreeMonoBold9pt7b.yAdvance;
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uint16_t wy = (display.height() / 4) - wh / 2;
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display.setPartialWindow(0, wy, display.width(), wh);
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display.firstPage();
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do
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{
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display.fillScreen(GxEPD_WHITE);
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//display.drawRect(x, y - tbh, tbw, tbh, GxEPD_BLACK);
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display.setCursor(x, y);
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display.print(HelloArduino);
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} while (display.nextPage());
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delay(1000);
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//Serial.println("helloArduino done");
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}
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void helloEpaper()
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void displayFlushFramebuffer()
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{
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//Serial.println("helloEpaper");
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display.setRotation(1);
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display.setFont(&FreeMonoBold9pt7b);
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display.setTextColor(display.epd2.hasColor ? GxEPD_RED : GxEPD_BLACK);
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int16_t tbx, tby;
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uint16_t tbw, tbh;
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// align with centered HelloWorld
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display.getTextBounds(HelloWorld, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t x = ((display.width() - tbw) / 2) - tbx;
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// height might be different
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display.getTextBounds(HelloEpaper, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t y = (display.height() * 3 / 4) + tbh / 2; // y is base line!
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// make the window big enough to cover (overwrite) descenders of previous text
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uint16_t wh = FreeMonoBold9pt7b.yAdvance;
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uint16_t wy = (display.height() * 3 / 4) - wh / 2;
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display.setPartialWindow(0, wy, display.width(), wh);
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Serial.println("displayFlushFramebuffer");
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display.setRotation(0);
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display.setFullWindow();
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display.firstPage();
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do
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{
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display.fillScreen(GxEPD_WHITE);
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display.setCursor(x, y);
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display.print(HelloEpaper);
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} while (display.nextPage());
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//Serial.println("helloEpaper done");
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display.fillScreen(GxEPD_WHITE);
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display.drawInvertedBitmap(0, 0, _buffer, display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
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display.nextPage();
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}
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#if defined(ESP8266) || defined(ESP32)
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#include <StreamString.h>
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#define PrintString StreamString
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#else
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class PrintString : public Print, public String
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{
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public:
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size_t write(uint8_t data) override
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{
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return concat(char(data));
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};
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};
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#endif
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void helloValue(double v, int digits)
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/**
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* @todo fertigstellen
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*/
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void displayWriteFramebuffer__(int offset, uint8_t bitmap[])
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{
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//Serial.println("helloValue");
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display.setRotation(1);
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display.setFont(&FreeMonoBold9pt7b);
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display.setTextColor(display.epd2.hasColor ? GxEPD_RED : GxEPD_BLACK);
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PrintString valueString;
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valueString.print(v, digits);
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int16_t tbx, tby;
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uint16_t tbw, tbh;
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display.getTextBounds(valueString, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t x = ((display.width() - tbw) / 2) - tbx;
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uint16_t y = (display.height() * 3 / 4) + tbh / 2; // y is base line!
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// show what happens, if we use the bounding box for partial window
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uint16_t wx = (display.width() - tbw) / 2;
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uint16_t wy = (display.height() * 3 / 4) - tbh / 2;
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display.setPartialWindow(wx, wy, tbw, tbh);
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display.firstPage();
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do
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{
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display.fillScreen(GxEPD_WHITE);
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display.setCursor(x, y);
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display.print(valueString);
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} while (display.nextPage());
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delay(2000);
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// make the partial window big enough to cover the previous text
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uint16_t ww = tbw; // remember window width
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display.getTextBounds(HelloEpaper, 0, 0, &tbx, &tby, &tbw, &tbh);
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// adjust, because HelloEpaper was aligned, not centered (could calculate this to be precise)
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ww = max(ww, uint16_t(tbw + 12)); // 12 seems ok
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wx = (display.width() - tbw) / 2;
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// make the window big enough to cover (overwrite) descenders of previous text
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uint16_t wh = FreeMonoBold9pt7b.yAdvance;
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wy = (display.height() * 3 / 4) - wh / 2;
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display.setPartialWindow(wx, wy, ww, wh);
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// alternately use the whole width for partial window
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//display.setPartialWindow(0, wy, display.width(), wh);
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display.firstPage();
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do
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// taken from Adafruit_GFX.cpp, modified
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int16_t w = display.epd2.WIDTH;
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int16_t h = display.epd2.HEIGHT;
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int16_t byteWidth = (w + 7) / 8; // Bitmap scanline pad = whole byte
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uint8_t byte = 0;
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for (int16_t j = 0; j < h; j++)
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{
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display.fillScreen(GxEPD_WHITE);
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display.setCursor(x, y);
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display.print(valueString);
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} while (display.nextPage());
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//Serial.println("helloValue done");
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for (int16_t i = 0; i < w; i++ )
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{
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if (i & 7) byte <<= 1;
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else
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{
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byte = pgm_read_byte(&bitmap[j * byteWidth + i / 8]);
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}
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if (!(byte & 0x80))
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{
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display.drawPixel(0 + i, 0 + j, GxEPD_BLACK);
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}
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}
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}
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}
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void deepSleepTest()
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void printSplash()
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{
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//Serial.println("deepSleepTest");
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const char hibernating[] = "hibernating ...";
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const char wokeup[] = "woke up";
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const char from[] = "from deep sleep";
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const char again[] = "again";
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const char Hello[] = "Hello Paperdash!";
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display.setRotation(1);
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display.setFont(&FreeMonoBold9pt7b);
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display.setTextColor(GxEPD_BLACK);
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int16_t tbx, tby;
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uint16_t tbw, tbh;
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// center text
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display.getTextBounds(hibernating, 0, 0, &tbx, &tby, &tbw, &tbh);
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display.getTextBounds(Hello, 0, 0, &tbx, &tby, &tbw, &tbh);
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// center bounding box by transposition of origin:
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uint16_t x = ((display.width() - tbw) / 2) - tbx;
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uint16_t y = ((display.height() - tbh) / 2) - tby;
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display.setFullWindow();
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@ -339,212 +119,6 @@ void deepSleepTest()
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{
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display.fillScreen(GxEPD_WHITE);
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display.setCursor(x, y);
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display.print(hibernating);
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} while (display.nextPage());
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display.hibernate();
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delay(5000);
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display.getTextBounds(wokeup, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t wx = (display.width() - tbw) / 2;
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uint16_t wy = (display.height() / 3) + tbh / 2; // y is base line!
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display.getTextBounds(from, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t fx = (display.width() - tbw) / 2;
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uint16_t fy = (display.height() * 2 / 3) + tbh / 2; // y is base line!
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display.firstPage();
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do
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{
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display.fillScreen(GxEPD_WHITE);
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display.setCursor(wx, wy);
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display.print(wokeup);
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display.setCursor(fx, fy);
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display.print(from);
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} while (display.nextPage());
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delay(5000);
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display.getTextBounds(hibernating, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t hx = (display.width() - tbw) / 2;
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uint16_t hy = (display.height() / 3) + tbh / 2; // y is base line!
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display.getTextBounds(again, 0, 0, &tbx, &tby, &tbw, &tbh);
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uint16_t ax = (display.width() - tbw) / 2;
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uint16_t ay = (display.height() * 2 / 3) + tbh / 2; // y is base line!
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display.firstPage();
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do
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{
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display.fillScreen(GxEPD_WHITE);
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display.setCursor(hx, hy);
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display.print(hibernating);
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display.setCursor(ax, ay);
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display.print(again);
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} while (display.nextPage());
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display.hibernate();
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//Serial.println("deepSleepTest done");
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}
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void showBox(uint16_t x, uint16_t y, uint16_t w, uint16_t h, bool partial)
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{
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//Serial.println("showBox");
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display.setRotation(1);
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if (partial)
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{
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display.setPartialWindow(x, y, w, h);
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}
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else
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{
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display.setFullWindow();
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}
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display.firstPage();
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do
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{
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display.fillScreen(GxEPD_WHITE);
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display.fillRect(x, y, w, h, GxEPD_BLACK);
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} while (display.nextPage());
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//Serial.println("showBox done");
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}
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void drawCornerTest()
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{
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|
display.setFullWindow();
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|
display.setFont(&FreeMonoBold9pt7b);
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display.setTextColor(GxEPD_BLACK);
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for (uint16_t r = 0; r <= 4; r++)
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{
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display.setRotation(r);
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display.firstPage();
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do
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{
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display.fillScreen(GxEPD_WHITE);
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display.fillRect(0, 0, 8, 8, GxEPD_BLACK);
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display.fillRect(display.width() - 18, 0, 16, 16, GxEPD_BLACK);
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display.fillRect(display.width() - 25, display.height() - 25, 24, 24, GxEPD_BLACK);
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display.fillRect(0, display.height() - 33, 32, 32, GxEPD_BLACK);
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display.setCursor(display.width() / 2, display.height() / 2);
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|
display.print(display.getRotation());
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|
} while (display.nextPage());
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|
delay(2000);
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}
|
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}
|
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void showFont(const char name[], const GFXfont *f)
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{
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display.setFullWindow();
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display.setRotation(0);
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display.setTextColor(GxEPD_BLACK);
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display.firstPage();
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do
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{
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drawFont(name, f);
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display.print(Hello);
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} while (display.nextPage());
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}
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void drawFont(const char name[], const GFXfont *f)
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{
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//display.setRotation(0);
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display.fillScreen(GxEPD_WHITE);
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display.setTextColor(GxEPD_BLACK);
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display.setFont(f);
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|
display.setCursor(0, 0);
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display.println();
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|
display.println(name);
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display.println(" !\"#$%&'()*+,-./");
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display.println("0123456789:;<=>?");
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display.println("@ABCDEFGHIJKLMNO");
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display.println("PQRSTUVWXYZ[\\]^_");
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if (display.epd2.hasColor)
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{
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|
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display.setTextColor(GxEPD_RED);
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}
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display.println("`abcdefghijklmno");
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display.println("pqrstuvwxyz{|}~ ");
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}
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|
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// note for partial update window and setPartialWindow() method:
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|
|
|
// partial update window size and position is on byte boundary in physical x direction
|
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|
|
// the size is increased in setPartialWindow() if x or w are not multiple of 8 for even rotation, y or h for odd rotation
|
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|
|
|
// see also comment in GxEPD2_BW.h, GxEPD2_3C.h or GxEPD2_GFX.h for method setPartialWindow()
|
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|
|
|
// showPartialUpdate() purposely uses values that are not multiples of 8 to test this
|
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|
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|
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|
|
void showPartialUpdate()
|
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|
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|
{
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|
|
|
// some useful background
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|
|
helloWorld();
|
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|
|
|
// use asymmetric values for test
|
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|
|
|
uint16_t box_x = 10;
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|
|
uint16_t box_y = 15;
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|
|
uint16_t box_w = 70;
|
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|
|
|
uint16_t box_h = 20;
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|
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uint16_t cursor_y = box_y + box_h - 6;
|
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|
|
|
float value = 13.95;
|
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|
|
|
uint16_t incr = display.epd2.hasFastPartialUpdate ? 1 : 3;
|
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|
|
|
display.setFont(&FreeMonoBold9pt7b);
|
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|
|
|
display.setTextColor(GxEPD_BLACK);
|
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|
|
|
// show where the update box is
|
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|
|
|
for (uint16_t r = 0; r < 4; r++)
|
|
|
|
|
{
|
|
|
|
|
display.setRotation(r);
|
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|
|
|
display.setPartialWindow(box_x, box_y, box_w, box_h);
|
|
|
|
|
display.firstPage();
|
|
|
|
|
do
|
|
|
|
|
{
|
|
|
|
|
display.fillRect(box_x, box_y, box_w, box_h, GxEPD_BLACK);
|
|
|
|
|
//display.fillScreen(GxEPD_BLACK);
|
|
|
|
|
} while (display.nextPage());
|
|
|
|
|
delay(2000);
|
|
|
|
|
display.firstPage();
|
|
|
|
|
do
|
|
|
|
|
{
|
|
|
|
|
display.fillRect(box_x, box_y, box_w, box_h, GxEPD_WHITE);
|
|
|
|
|
} while (display.nextPage());
|
|
|
|
|
delay(1000);
|
|
|
|
|
}
|
|
|
|
|
//return;
|
|
|
|
|
// show updates in the update box
|
|
|
|
|
for (uint16_t r = 0; r < 4; r++)
|
|
|
|
|
{
|
|
|
|
|
display.setRotation(r);
|
|
|
|
|
display.setPartialWindow(box_x, box_y, box_w, box_h);
|
|
|
|
|
for (uint16_t i = 1; i <= 10; i += incr)
|
|
|
|
|
{
|
|
|
|
|
display.firstPage();
|
|
|
|
|
do
|
|
|
|
|
{
|
|
|
|
|
display.fillRect(box_x, box_y, box_w, box_h, GxEPD_WHITE);
|
|
|
|
|
display.setCursor(box_x, cursor_y);
|
|
|
|
|
display.print(value * i, 2);
|
|
|
|
|
} while (display.nextPage());
|
|
|
|
|
delay(500);
|
|
|
|
|
}
|
|
|
|
|
delay(1000);
|
|
|
|
|
display.firstPage();
|
|
|
|
|
do
|
|
|
|
|
{
|
|
|
|
|
display.fillRect(box_x, box_y, box_w, box_h, GxEPD_WHITE);
|
|
|
|
|
} while (display.nextPage());
|
|
|
|
|
delay(1000);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void drawBitmaps()
|
|
|
|
|
{
|
|
|
|
|
display.setFullWindow();
|
|
|
|
|
|
|
|
|
|
drawBitmaps640x384();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void drawBitmaps640x384()
|
|
|
|
|
{
|
|
|
|
|
const unsigned char *bitmaps[] =
|
|
|
|
|
{
|
|
|
|
|
Bitmap640x384_1, Bitmap640x384_2};
|
|
|
|
|
|
|
|
|
|
if ((display.epd2.panel == GxEPD2::GDEW075T8) || (display.epd2.panel == GxEPD2::GDEW075Z09))
|
|
|
|
|
{
|
|
|
|
|
for (uint16_t i = 0; i < sizeof(bitmaps) / sizeof(char *); i++)
|
|
|
|
|
{
|
|
|
|
|
display.firstPage();
|
|
|
|
|
do
|
|
|
|
|
{
|
|
|
|
|
display.fillScreen(GxEPD_WHITE);
|
|
|
|
|
display.drawInvertedBitmap(0, 0, bitmaps[i], display.epd2.WIDTH, display.epd2.HEIGHT, GxEPD_BLACK);
|
|
|
|
|
} while (display.nextPage());
|
|
|
|
|
delay(2000);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
Thomas Ballmann
4 years ago