TFTLCD2.4液晶触摸屏驱动的经验

ti

我选用的是Adafruit_TFTLCD的库函数驱动液晶屏，液晶屏芯片是ILI9325，上载程序，起初屏幕白屏，就打开串口管理器看反馈的信息TFT LCD test
Using Adafruit 2.8" TFT Breakout Board Pinout
TFT size is 240x320
Unknown LCD driver chip: 6809
If using the Adafruit 2.8" TFT Arduino shield, the line:
  #define USE_ADAFRUIT_SHIELD_PINOUT，
查看代码发现代码中定义了只有识别了9325芯片的信息才可以驱动液晶屏，于是就把源程序的return注释掉，直接赋值
if(identifier == 0x9325) {
Serial.println(F("Found ILI9325 LCD driver"));
  } else if(identifier == 0x9328) {
Serial.println(F("Found ILI9328 LCD driver"));
  } else if(identifier == 0x7575) {
Serial.println(F("Found HX8347G LCD driver"));
  } else if(identifier == 0x9341) {
Serial.println(F("Found ILI9341 LCD driver"));
  } else if(identifier == 0x8357) {
Serial.println(F("Found HX8357D LCD driver"));
  } else {
Serial.print(F("Unknown LCD driver chip: "));
Serial.println(identifier, HEX);
Serial.println(F("If using the Adafruit 2.8" TFT Arduino shield, the line:"));
Serial.println(F("  #define USE_ADAFRUIT_SHIELD_PINOUT"));
Serial.println(F("should appear in the library header (Adafruit_TFT.h)."));
Serial.println(F("If using the breakout board, it should NOT be #defined!"));
Serial.println(F("Also if using the breakout, double-check that all wiring"));
Serial.println(F("matches the tutorial."));
    //return;
   identifier = 0x9325;
  }

再上载一下液晶屏就可以正常驱动了

TFT size is 240x320
Unknown LCD driver chip: 6809
If using the Adafruit 2.8" TFT Arduino shield, the line:
  #define USE_ADAFRUIT_SHIELD_PINOUT
should appear in the library header (Adafruit_TFT.h).
If using the breakout board, it should NOT be #defined!
Also if using the breakout, double-check that all wiring
matches the tutorial.
Benchmark             Time (microseconds)
Screen fill             1321920
Text                   191300
Lines                   1091844
Horiz/Vert Lines       137464
Rectangles (outline)    100220
Rectangles (filled)    3068776
Circles (filled)       1218600
Circles (outline)       474972
Triangles (outline)    346464
Triangles (filled)    1671168
Rounded rects (outline)  218420
Rounded rects (filled) 3589960
Done!

旧闻 · 2017-7-3 10:45:29

下载看看
#define USE_ADAFRUIT_SHIELD_PINOUT;
//查看代码发现代码中定义了只有识别了9325芯片的信息才可以驱动液晶屏，于是就把源程序的return注释掉，直接赋值
if(identifier ==

sammyckm · 2017-7-3 20:49:59

#define USE_ADAFRUIT_SHIELD_PINOUT;
//查看代码发现代码中定义了只有识别了9325芯片的信息才可以驱动液晶屏，于是就把源程序的return注释掉，直接赋值
if(identifier == 0x9325) {
Serial.println(F("Found ILI9325 LCD driver"));
} else if(identifier == 0x9328) {
Serial.println(F("Found ILI9328 LCD driver"));
出現幵列錯誤
_2_4__test1:3: error: expected unqualified-id before 'if'
Arduino 版本.0.5 及1.6.8 錯誤相同