Raspberry Pi TMP112 Kub Sensor Java Qhia: 4 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:26

TMP112 High-Accuracy, Low-Power, Digital Kub Sensor I2C MINI module. TMP112 yog qhov zoo tshaj rau kev ntsuas kub ntxiv. Cov cuab yeej no muab qhov tseeb ntawm ± 0.5 ° C yam tsis tas yuav ntsuas qhov ntsuas lossis sab nrauv tiv thaiv teeb liab. Nov yog qhov ua piv txwv nrog Java code siv Raspberry Pi.

Kauj Ruam 1: Yam Koj Xav Tau..

1. Raspberry Pi

2. TMP112

3. I²C Cable

4. I²C Shield rau Raspberry Pi

5. Ethernet Cable

Kauj ruam 2: Kev sib txuas

Siv I2C daim thaiv rau raspberry pi thiab maj mam thawb nws hla gpio pins ntawm raspberry pi.

Tom qab ntawd txuas ib qho kawg ntawm I2C cable rau TMP112 sensor thiab lwm qhov kawg rau I2C daim ntaub thaiv.

Kuj txuas Ethernet cable rau pi lossis koj tuaj yeem siv WiFi module.

Kev sib txuas tau qhia hauv daim duab saum toj no.

Kauj ruam 3: Code

Tus lej java rau TMP112 tuaj yeem rub tawm los ntawm peb GitHub chaw cia khoom- Dcube Store.

Nov yog qhov txuas rau tib yam:

github.com/DcubeTechVentures/TMP112

Cov ntawv ntawm TMP112 tuaj yeem pom ntawm no:

www.ti.com/lit/ds/sbos473e/sbos473e.pdf

Peb tau siv pi4j tsev qiv ntawv rau java code, cov kauj ruam rau nruab pi4j ntawm raspberry pi tau piav qhia ntawm no:

pi4j.com/install.html

Koj tseem tuaj yeem luam cov cai los ntawm no, nws tau muab raws li hauv qab no:

// Faib nrog daim ntawv tso cai yuav dawb.

// Siv nws txhua txoj hauv kev uas koj xav tau, muaj txiaj ntsig lossis pub dawb, muab nws haum rau hauv daim ntawv tso cai ntawm nws cov haujlwm ua haujlwm.

TSI TMP112

// Cov cai no tau tsim los ua haujlwm nrog TMP112_I2CS I2C Mini Module muaj nyob hauv Dcube Store.

ntshuam com.pi4j.io.i2c. I2CBus;

ntshuam com.pi4j.io.i2c. I2CDevice;

ntshuam com.pi4j.io.i2c. I2CFactory;

ntshuam java.io. IOException;

pej xeem chav kawm TMP112

{

pej xeem zoo li qub tsis muaj dab tsi tseem ceeb (Txoj hlua args ) cuam tshuam zam

{

// Tsim I2C npav

I2CBus tsheb npav = I2CFactory.getInstance (I2CBus. BUS_1);

// Tau txais I2C ntaus ntawv, TMP112I2C chaw nyob yog 0x48 (72)

I2CDevice ntaus ntawv = bus.getDevice (0x48);

byte teeb tsa = tshiab byte [2];

// Kev hloov pauv mus tas li, 12-ntsis kev daws teeb meem, Kev ua tsis raug yog 1

config [0] = (byte) 0x60;

// Polarity tsawg, Thermostat hauv Comparator hom, Disables Shutdown mode

config [1] = (byte) 0xA0;

// Sau teeb tsa rau npe 0x01 (1)

ntaus ntawv.write (0x01, teeb tsa, 0, 2);

Xov.sleep (500);

// Nyeem 2 Bytes ntawm cov ntaub ntawv los ntawm chaw nyob 0x00 (0), msb ua ntej

byte cov ntaub ntawv = tshiab byte [2];

device.read (0x00, cov ntaub ntawv, 0, 2);

// Hloov cov ntaub ntawv

int temp = (((cov ntaub ntawv [0] & 0xFF) * 256) + (data [1] & 0xFF))/16;

yog (temp> 2047)

{

temp -= 4096;

}

ob cTemp = temp * 0.0625;

ob fTemp = cTemp * 1.8 + 32;

// Tso tawm rau lub vijtsam

System.out.printf ("Kub hauv Celsius yog: %.2f C %n", cTemp);

System.out.printf ("Kub hauv Fahrenheit yog: %.2f F %n", fTemp);

}

}

Kauj ruam 4: Cov ntawv thov..:

Ntau daim ntawv thov suav nrog TMP112 lub zog qis, qhov tseeb cov ntsuas ntsuas kub suav nrog Lub Hwj Huam Saib Xyuas Kub Kub, Khoos phis tawj Ib puag ncig tiv thaiv cua sov, Kev tswj roj teeb nrog rau lub tshuab ua haujlwm.