I can't get my program to print temperature on TFT.
#include <DallasTemperature.h>
#include <OneWire.h>
#include <Adafruit_GFX.h> // Core graphics library
#include <Adafruit_TFTLCD.h> // Hardware-specific library
#define LCD_CS A3 // Chip Select goes to Analog 3
#define LCD_CD A2 // Command/Data goes to Analog 2
#define LCD_WR A1 // LCD Write goes to Analog 1
#define LCD_RD A0 // LCD Read goes to Analog 0
#define LCD_RESET A4 // Can alternately just connect to Arduino's reset pin
// Assign human-readable names to some common 16-bit color values:
#define BLACK 0x0000
#define BLUE 0x001F
#define RED 0xF800
#define GREEN 0x07E0
#define CYAN 0x07FF
#define MAGENTA 0xF81F
#define YELLOW 0xFFE0
#define WHITE 0xFFFF
Adafruit_TFTLCD tft(LCD_CS, LCD_CD, LCD_WR, LCD_RD, LCD_RESET);
// OneWire DS18S20, DS18B20, DS1822 Temperature Example
//
// OneWire Arduino Library, connecting 1-wire devices (DS18S20, etc) to Teensy
//
// The DallasTemperature library can do all this work for you!
// MilesBurton.com
OneWire ds(22); // on pin 22 (a 4.7K resistor is necessary)
void setup(void) {
Serial.begin(9600);
tft.reset();
}
void loop(void) {
byte i;
byte present = 0;
byte type_s;
byte data[12];
byte addr[8];
float celsius, fahrenheit;
if ( !ds.search(addr)) {
Serial.println("No more addresses.");
Serial.println();
ds.reset_search();
delay(2500);
return;
}
Serial.print("ROM =");
for( i = 0; i < 8; i++) {
Serial.write(' ');
Serial.print(addr*, HEX);*
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}*
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if (OneWire::crc8(addr, 7) != addr[7]) {*
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Serial.println("CRC is not valid!");*
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return;*
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}*
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Serial.println();*
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// the first ROM byte indicates which chip*
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switch (addr[0]) {*
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case 0x10:*
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Serial.println(" Chip = DS18S20"); // or old DS1820*
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type_s = 1;*
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break;*
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case 0x28:*
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Serial.println(" Chip = DS18B20");*
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type_s = 0;*
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break;*
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case 0x22:*
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Serial.println(" Chip = DS1822");*
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type_s = 0;*
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break;*
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default:*
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Serial.println("Device is not a DS18x20 family device.");*
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return;*
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}*
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ds.reset();*
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ds.select(addr);*
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ds.write(0x44, 1); // start conversion, with parasite power on at the end*
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delay(2500); // maybe 750ms is enough, maybe not*
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// we might do a ds.depower() here, but the reset will take care of it.*
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present = ds.reset();*
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ds.select(addr); *
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ds.write(0xBE); // Read Scratchpad*
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Serial.print(" Data = ");*
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Serial.print(present, HEX);*
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Serial.print(" ");*
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for ( i = 0; i < 9; i++) { // we need 9 bytes*
_ data = ds.read();_
_ Serial.print(data*, HEX);
Serial.print(" ");
}
Serial.print(" CRC=");
Serial.print(OneWire::crc8(data, 8), HEX);
Serial.println();
// Convert the data to actual temperature*
* // because the result is a 16 bit signed integer, it should*
* // be stored to an "int16_t" type, which is always 16 bits*
* // even when compiled on a 32 bit processor._
int16_t raw = (data[1] << 8) | data[0];
if (type_s) {
_ raw = raw << 3; // 9 bit resolution default*
* if (data[7] == 0x10) {
// "count remain" gives full 12 bit resolution*
* raw = (raw & 0xFFF0) + 12 - data[6];
}
} else {
byte cfg = (data[4] & 0x60);
// at lower res, the low bits are undefined, so let's zero them*
* if (cfg == 0x00) raw = raw & ~7; // 9 bit resolution, 93.75 ms*
* else if (cfg == 0x20) raw = raw & ~3; // 10 bit res, 187.5 ms*
* else if (cfg == 0x40) raw = raw & ~1; // 11 bit res, 375 ms*
* //// default is 12 bit resolution, 750 ms conversion time*
* }*_
* celsius = (float)raw / 16.0;*
_ fahrenheit = celsius * 1.8 + 32.0;
* Serial.print(" Temperature = ");
Serial.print(celsius);
Serial.print(" Celsius, ");
Serial.print(fahrenheit);
Serial.println(" Fahrenheit");
testText();
}
unsigned long testText() {
tft.setCursor(0, 0);
tft.setTextColor(BLACK); tft.setTextSize(3);
tft.println("1.Temp:");
tft.setCursor(135, 0);
tft.println("140");*_
}