Differences

This shows you the differences between two versions of the page.

--- en:iot-open:practical:hardware:sut:stm32:emb6_1 [2024/04/20 13:24] – ktokarz
+++ en:iot-open:practical:hardware:sut:stm32:emb6_1 [2024/04/20 13:34] (current) – ktokarz
@@ Line 27: / Line 27: @@
 Check if you can see a full ePaper Display in your video stream. Book a device and create a dummy Arduino file with ''void setup()...'' and ''void loop()...''.
-Prepare a small bitmap (e.g. 60x60 pixels) and convert it to the byte array with b/w settings.\\
+Prepare a small bitmap (e.g. 64x64 pixels) and convert it to the byte array with b/w settings.\\
 Sample project favicon you can use is present in Figure {{ref>iotopenfavicon}}:
 <figure iotopenfavicon>
-{{ :en:iot-open:practical:hardware:sut:esp32:logo_60.jpg?60 |}}
+{{ :en:iot-open:practical:hardware:sut:stm32:logo64.png?64 |}}
-<caption>IOT-OPEN.EU Reloaded favicon 60px x 60px</caption>
+<caption>IOT-OPEN.EU Reloaded favicon 64px x 64px</caption>
 </figure>
@@ Line 72: / Line 72: @@
 xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
 xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
-};
-// Total bytes used to store images in PROGMEM = 496
-const int epd_bitmap_allArray_LEN = 1;
-const unsigned char* epd_bitmap_allArray[1] = {
-	epd_bitmap_logo_64
 };
 </code>
@@ Line 143: / Line 137: @@
 Declare GPIOs and some configurations needed to handle the ePaper display properly:
 <code c>
-#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN
+// The epaper display's model is selected
+#define GxEPD2_DRIVER_CLASS GxEPD2_213_BN
 #define GxEPD2_DISPLAY_CLASS GxEPD2_BW
+// Definition of GPIOs except SPI pins
 #define EPAPER_DC_PIN D4
 #define EPAPER_CS_PIN D1
@@ Line 151: / Line 147: @@
 #define EPAPER_BUSY_PIN D7
+// Definition of the size of the buffer
 #define MAX_DISPLAY_BUFFER_SIZE 65536ul
 #define MAX_HEIGHT(EPD) (EPD::HEIGHT <= MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8) ? EPD::HEIGHT : MAX_DISPLAY_BUFFER_SIZE / (EPD::WIDTH / 8))
@@ Line 163: / Line 160: @@
 You can also declare a message to display as an array of characters:
 <code c>
-static const char HelloWorld[] = "Hello IoT World!";
+static const char HelloWorldMsg[] = "Hello IoT World!";
 </code>
@@ Line 194: / Line 191: @@
 <code c>
 int16_t tbx, tby; uint16_t tbw, tbh;
-display.getTextBounds(HelloWorld, 0, 0, &tbx, &tby, &tbw, &tbh);
+display.getTextBounds(HelloWorldMsg, 0, 0, &tbx, &tby, &tbw, &tbh);
-uint16_t x = ((display.width() - tbw) / 2) - tbx;
+uint16_t x = ((display.width() - tbw) / 2) - tbx;  //center in x arrow
-uint16_t y = ((display.height() - tbh) / 2) - tby;
+uint16_t y = ((display.height() - tbh) / 4) - tby; //one fourth from the top
 </code>
@@ Line 204: / Line 201: @@
 <code c>
 display.setFullWindow();
-display.firstPage();
+display.fillScreen(GxEPD_WHITE);
-do
+display.setCursor(x, y);
-  {
+display.print(HelloWorldMsg);
-    display.drawImage((uint8_t*)epd_bitmap_logo_60,0,0,60,60);
+display.display(true);
-    display.setCursor(x, y);
+display.drawImage((uint8_t*)epd_bitmap_logo_64,0,0,64,64);
-    display.print(HelloWorld);
-  }
-while (display.nextPage());
 digitalWrite(EPAPER_SPI_CS_PIN,HIGH);
 </code>

en/iot-open/practical/hardware/sut/stm32/emb6_1.1713619477.txt.gz · Last modified: 2024/04/20 13:24 by ktokarz