67 lines
2.5 KiB
C++
67 lines
2.5 KiB
C++
//This example shows a high VGA resolution 3Bit mode
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//The VGA3BitI implementation uses the I²S interrupt to transcode a dense frame buffer to the needed
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//8Bit/sample. Using the dense frame buffer allows to fit the big frame buffer in memory at the price of
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//a lot cpu performance.
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//You need to connect a VGA screen cable to the pins specified below.
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//cc by-sa 4.0 license
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//bitluni
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//including the needed header
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#include <ESP32Lib.h>
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#include <Ressources/Font6x8.h>
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//pin configuration
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const int redPin = 14;
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const int greenPin = 19;
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const int bluePin = 27;
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const int hsyncPin = 32;
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const int vsyncPin = 33;
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//VGA Device using an interrupt to unpack the pixels from 4bit to 8bit for the I²S
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//This takes some CPU time in the background but is able to fit a frame buffer in the memory
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VGA3BitI vga;
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///draws the bitluni logo
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void bitluni(int x, int y, int s)
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{
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vga.fillCircle(x + 2 * s, y + 2 * s, 2 * s, vga.RGB(128, 0, 0));
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vga.fillCircle(x + 22 * s, y + 2 * s, 2 * s, vga.RGB(128, 0, 0));
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vga.fillCircle(x + 2 * s, y + 22 * s, 2 * s, vga.RGB(128, 0, 0));
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vga.fillCircle(x + 22 * s, y + 22 * s, 2 * s, vga.RGB(128, 0, 0));
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vga.fillRect(x, y + 2 * s, 24 * s, 20 * s, vga.RGB(128, 0, 0));
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vga.fillRect(x + 2 * s, y, 20 * s, 24 * s, vga.RGB(128, 0, 0));
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vga.fillCircle(x + 7 * s, y + 4 * s, 2 * s, vga.RGB(255, 255, 255));
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vga.fillCircle(x + 15 * s, y + 6 * s, 2 * s, vga.RGB(255, 255, 255));
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vga.fillCircle(x + 11 * s, y + 16 * s, 6 * s, vga.RGB(255, 255, 255));
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vga.fillCircle(x + 13 * s, y + 16 * s, 6 * s, vga.RGB(255, 255, 255));
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vga.fillCircle(x + 11 * s, y + 16 * s, 2 * s, vga.RGB(128, 0, 0));
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vga.fillCircle(x + 13 * s, y + 16 * s, 2 * s, vga.RGB(128, 0, 0));
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vga.fillRect(x + 11 * s, y + 14 * s, 2 * s, 4 * s, vga.RGB(128, 0, 0));
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vga.fillRect(x + 9 * s, y + 14 * s, 2 * s, 2 * s, vga.RGB(128, 0, 0));
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vga.fillRect(x + 5 * s, y + 4 * s, 4 * s, 12 * s, vga.RGB(255, 255, 255));
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vga.fillRect(x + 9 * s, y + 10 * s, 4 * s, s, vga.RGB(255, 255, 255));
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}
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void setup()
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{
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//initializing the graphics mode
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vga.init(vga.MODE800x600, redPin, greenPin, bluePin, hsyncPin, vsyncPin);
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//setting the font
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vga.setFont(Font6x8);
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//clearing with white background
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vga.clear(vga.RGB(0xffffff));
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//text position
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vga.setCursor(10, 10);
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//black text color no background color
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vga.setTextColor(vga.RGB(0));
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//show the remaining memory
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vga.print("free memory: ");
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vga.print((int)heap_caps_get_free_size(MALLOC_CAP_DEFAULT));
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//draw the logo
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bitluni(150, 60, 20);
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}
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//mainloop
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void loop()
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{
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} |