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#ifdef ST7789
#include "ST7789Display.h"
#ifndef X_OFFSET
#define X_OFFSET 0 // No offset needed for landscape
#endif
#ifndef Y_OFFSET
#define Y_OFFSET 1 // Vertical offset to prevent top row cutoff
#endif
#ifdef HELTEC_VISION_MASTER_T190
#define SCALE_X 2.5f // 320 / 128
#define SCALE_Y 2.65625f // 170 / 64
#else
#define SCALE_X 1.875f // 240 / 128
#define SCALE_Y 2.109375f // 135 / 64
#endif
bool ST7789Display::begin() {
if(!_isOn) {
pinMode(PIN_TFT_VDD_CTL, OUTPUT);
pinMode(PIN_TFT_LEDA_CTL, OUTPUT);
digitalWrite(PIN_TFT_VDD_CTL, LOW);
#ifdef PIN_TFT_LEDA_CTL_ACTIVE
digitalWrite(PIN_TFT_LEDA_CTL, PIN_TFT_LEDA_CTL_ACTIVE);
#else
digitalWrite(PIN_TFT_LEDA_CTL, LOW);
#endif
digitalWrite(PIN_TFT_RST, HIGH);
display.init();
display.landscapeScreen();
display.displayOn();
setCursor(0,0);
_isOn = true;
}
return true;
}
void ST7789Display::turnOn() {
if (!_isOn) {
// Restore power to the display but keep backlight off
digitalWrite(PIN_TFT_VDD_CTL, LOW);
digitalWrite(PIN_TFT_RST, HIGH);
// Re-initialize the display
display.init();
display.displayOn();
delay(20);
// Now turn on the backlight
#ifdef PIN_TFT_LEDA_CTL_ACTIVE
digitalWrite(PIN_TFT_LEDA_CTL, PIN_TFT_LEDA_CTL_ACTIVE);
#else
digitalWrite(PIN_TFT_LEDA_CTL, LOW);
#endif
_isOn = true;
}
}
void ST7789Display::turnOff() {
digitalWrite(PIN_TFT_VDD_CTL, HIGH);
#ifdef PIN_TFT_LEDA_CTL_ACTIVE
digitalWrite(PIN_TFT_LEDA_CTL, !PIN_TFT_LEDA_CTL_ACTIVE);
#else
digitalWrite(PIN_TFT_LEDA_CTL, HIGH);
#endif
digitalWrite(PIN_TFT_RST, LOW);
_isOn = false;
}
void ST7789Display::clear() {
display.clear();
}
void ST7789Display::startFrame(Color bkg) {
display.clear();
_color = ST77XX_WHITE;
display.setRGB(_color);
display.setFont(ArialMT_Plain_16);
}
void ST7789Display::setTextSize(int sz) {
switch(sz) {
case 1 :
display.setFont(ArialMT_Plain_16);
break;
case 2 :
display.setFont(ArialMT_Plain_24);
break;
default:
display.setFont(ArialMT_Plain_16);
}
}
void ST7789Display::setColor(Color c) {
switch (c) {
case DisplayDriver::DARK :
_color = ST77XX_BLACK;
display.setColor(OLEDDISPLAY_COLOR::BLACK);
break;
#if 0
case DisplayDriver::LIGHT :
_color = ST77XX_WHITE;
break;
case DisplayDriver::RED :
_color = ST77XX_RED;
break;
case DisplayDriver::GREEN :
_color = ST77XX_GREEN;
break;
case DisplayDriver::BLUE :
_color = ST77XX_BLUE;
break;
case DisplayDriver::YELLOW :
_color = ST77XX_YELLOW;
break;
case DisplayDriver::ORANGE :
_color = ST77XX_ORANGE;
break;
#endif
default:
_color = ST77XX_WHITE;
display.setColor(OLEDDISPLAY_COLOR::WHITE);
break;
}
display.setRGB(_color);
}
void ST7789Display::setCursor(int x, int y) {
_x = x*SCALE_X + X_OFFSET;
_y = y*SCALE_Y + Y_OFFSET;
}
void ST7789Display::print(const char* str) {
display.drawString(_x, _y, str);
}
void ST7789Display::printWordWrap(const char* str, int max_width) {
display.drawStringMaxWidth(_x, _y, max_width*SCALE_X, str);
}
void ST7789Display::fillRect(int x, int y, int w, int h) {
display.fillRect(x*SCALE_X + X_OFFSET, y*SCALE_Y + Y_OFFSET, w*SCALE_X, h*SCALE_Y);
}
void ST7789Display::drawRect(int x, int y, int w, int h) {
display.drawRect(x*SCALE_X + X_OFFSET, y*SCALE_Y + Y_OFFSET, w*SCALE_X, h*SCALE_Y);
}
void ST7789Display::drawXbm(int x, int y, const uint8_t* bits, int w, int h) {
// Calculate the base position in display coordinates
uint16_t startX = x * SCALE_X + X_OFFSET;
uint16_t startY = y * SCALE_Y + Y_OFFSET;
// Width in bytes for bitmap processing
uint16_t widthInBytes = (w + 7) / 8;
// Process the bitmap row by row
for (uint16_t by = 0; by < h; by++) {
// Calculate the target y-coordinates for this logical row
int y1 = startY + (int)(by * SCALE_Y);
int y2 = startY + (int)((by + 1) * SCALE_Y);
int block_h = y2 - y1;
// Scan across the row bit by bit
for (uint16_t bx = 0; bx < w; bx++) {
// Calculate the target x-coordinates for this logical column
int x1 = startX + (int)(bx * SCALE_X);
int x2 = startX + (int)((bx + 1) * SCALE_X);
int block_w = x2 - x1;
// Get the current bit
uint16_t byteOffset = (by * widthInBytes) + (bx / 8);
uint8_t bitMask = 0x80 >> (bx & 7);
bool bitSet = pgm_read_byte(bits + byteOffset) & bitMask;
// If the bit is set, draw a block of pixels
if (bitSet) {
// Draw the block as a filled rectangle
display.fillRect(x1, y1, block_w, block_h);
}
}
}
}
uint16_t ST7789Display::getTextWidth(const char* str) {
return display.getStringWidth(str) / SCALE_X;
}
void ST7789Display::endFrame() {
display.display();
}
#endif
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