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상품 정보 | 가격 | 삭제 |
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디지털 온도계 센서 : DS18B20 아두이노 | ||
TOTAL PRICE(수량) 0 |
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#include <OneWire.h>
int DS18S20_Pin = 2;
OneWire ds(DS18S20_Pin);
void setup(void) {
Serial.begin(9600);
}
void loop(void) {
float temperature = getTemp();
Serial.println(temperature);
delay(100);
}
float getTemp(){
byte data[12];
byte addr[8];
if ( !ds.search(addr)) {
ds.reset_search();
return -1000;
}
if ( OneWire::crc8( addr, 7) != addr[7]) {
Serial.println("CRC is not valid!");
return -1000;
}
if ( addr[0] != 0x10 && addr[0] != 0x28) {
Serial.print("Device is not recognized");
return -1000;
}
ds.reset();
ds.select(addr);
ds.write(0x44,1);
byte present = ds.reset();
ds.select(addr);
ds.write(0xBE); // Read Scratchpad
for (int i = 0; i < 9; i++) {
data[i] = ds.read();
}
ds.reset_search();
byte MSB = data[1];
byte LSB = data[0];
float tempRead = ((MSB << 8) | LSB);
float TemperatureSum = tempRead / 16;
return TemperatureSum;
} |
cs |