#include <Arduino_GFX_Library.h>
// Set your actual connections here
Arduino_DataBus *bus = new Arduino_SWSPI(
4 /* DC */,
2 /* CS */,
18 /* SCK */,
23 /* MOSI */,
-1 /* MISO not used */
);
// Set width/height according to your LCD
Arduino_GFX *gfx = new Arduino_ST7735(
bus,
13, // RST
0, // rotation
false, // IPS
128, 160 // width, height
);
uint8_t madctl_vals[] = {
0x00, // Normal RGB
0x08, // BGR
0x40, // MY
0x20, // MX
0x60, // MX | MY
0xC0, // MV | MY
0xE8, // MX | MY | BGR | MV
0x88 // MY | BGR
};
uint8_t current = 0;
void setup() {
gfx->begin();
gfx->fillScreen(BLACK);
}
void loop() {
uint8_t val = madctl_vals[current];
bus->beginWrite();
bus->writeCommand(0x36); // MADCTL
bus->write(val); // Apply MADCTL value
bus->endWrite();
gfx->fillScreen(BLACK);
gfx->setCursor(10, 10);
gfx->setTextSize(1);
gfx->setTextColor(WHITE);
gfx->print(“MADCTL = 0x”);
gfx->println(val, HEX);
gfx->setCursor(10, 40);
gfx->setTextColor(RED);
gfx->println(“Red text”);
gfx->setCursor(10, 70);
gfx->setTextColor(BLUE);
gfx->println(“Blue text”);
gfx->setCursor(10, 100);
gfx->setTextColor(GREEN);
gfx->println(“Green text”);
current = (current + 1) % (sizeof(madctl_vals)); // Go to next mode
delay(5000); // Wait 3 seconds before next mode
}
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