tft 温湿度计

hgmyaoming

#include<dht11.h>
#include <TFT.h>  // Arduino LCD library
#include <SPI.h>
#define DHT11PIN 2
dht11 DHT11;
// pin definition for the Uno
#define cs   10
#define dc   9
#define rst  8
// create an instance of the library
TFT TFTscreen = TFT(cs, dc, rst);
// char array to print to the screen
char HumsensorPrintout[10];
char TmpsensorPrintout[10];
//char string1[10];//温度值字符串变量
//char string2[10];//湿度值字符串变量
void setup() {
  pinMode(DHT11PIN,OUTPUT);
  // Put this line at the beginning of every sketch that uses the GLCD:
  Serial.begin(9600);
  TFTscreen.begin();
// clear the screen with a black background
  TFTscreen.background(0, 0, 0);
}

void loop() {
  int  chk1 = (DHT11.read(DHT11PIN));
  String chk = String(DHT11.read(DHT11PIN));
  // convert the reading to a char array
  chk.toCharArray(HumsensorPrintout, 10);
  chk.toCharArray(TmpsensorPrintout, 10);
   // write the static text to the screen
  // set the font color to white
  TFTscreen.stroke(255, 255, 255);
  // set the font size
  TFTscreen.setTextSize(2);
  TFTscreen.text("HUM :\n ", 0, 4);
  TFTscreen.text(HumsensorPrintout,20 , 30);
  //lcd.print((float)DHT11.temperature, 2);
// lcd.print("C");
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
   TFTscreen.text("TMP : \n", 0, 60);
   TFTscreen.text(TmpsensorPrintout,20 , 90);
  Serial.print("Humidity (%): ");
  Serial.println(DHT11.humidity);
  //Serial.println(HumsensorPrintout);
  Serial.print("Temperature (oC): ");
  Serial.println(DHT11.temperature);
  //Serial.println(TmpsensorPrintout);
  delay(2500);
  TFTscreen.stroke(0, 0, 0);
  TFTscreen.text(HumsensorPrintout,20 ,30);
  TFTscreen.text(TmpsensorPrintout,20, 90);

}
运行后，总是显示-2，看了窜口显示正常，我想应该是数据类型转换出了问题，但是又不知道怎么改。昨晚搞通宵都没有搞好，路过的帮看看，感谢不尽！！