// STM32 Nucleo-C031C6 SPI LCD Example
// Simulation: https://wokwi.com/projects/365549388158011393

#include <SPI.h>
#include <Adafruit_GFX.h>
#include <Adafruit_ILI9341.h>
#include "image.h"

// 引脚（你原来的正确引脚）
#define TFT_CS   PB3
#define TFT_DC   PA10
#define TFT_RST  -1

Adafruit_ILI9341 tft(TFT_CS, TFT_DC, TFT_RST);

void setup() {
  Serial2.begin(9600);
  while (!Serial2);
  Serial2.println("准备输入：");

  tft.begin(20000000);
  tft.setRotation(0);
  tft.fillScreen(ILI9341_WHITE);
  delay(10);

  // 图片居中显示
  int imgX = (240 - IMG_W) / 2;
  tft.drawRGBBitmap(imgX, 20, image_data, IMG_W, IMG_H);

  // 文字
  tft.setTextSize(2);
  tft.setTextColor(ILI9341_BLACK, ILI9341_WHITE);
  tft.setCursor(10, 110);
  tft.print("Input word:");
}

void loop() {
  if (Serial2.available()) {
    String text = Serial2.readStringUntil('\n');
    text.trim();
    if (text.length() > 0) {
      tft.fillRect(10, 140, 220, 40, ILI9341_WHITE);
      tft.setTextSize(3);
      tft.setTextColor(ILI9341_BLACK, ILI9341_WHITE);
      tft.setCursor(10, 140);
      tft.print(text);
      Serial2.print("Displayed: ");
      Serial2.println(text);
    }
  }
}