Raspberry Pi - TCN75A Kub Sensor Java Qhia: 4 Kauj Ruam

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

TCN75A yog ob txoj kab hluav taws xob ntsuas kub sib xyaw ua ke nrog ntsuas kub-rau-digital hloov pauv. Nws tau suav nrog cov neeg siv cov ntawv sau npe uas muab kev hloov pauv rau kev thov ntsuas kub. Cov chaw tso npe tso cai rau cov neeg siv teeb tsa hom kev txuag hluav taws xob, kaw lub kaw lus, ib hom kev txhaj tshuaj thiab lwm yam. Nov yog nws qhov ua piv txwv nrog raspberry pi siv java code.

Kauj Ruam 1: Yam Koj Xav Tau..

1. Raspberry Pi

2. TCN75A

3. I²C Cable

4. I²C Shield rau Raspberry Pi

5. Ethernet Cable

Kauj Ruam 2: Kev Sib Txuas:

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

Tom qab ntawd txuas ib kawg ntawm I2C cable rau TCN75A 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 TCN75A tuaj yeem rub tawm los ntawm peb qhov chaw cia khoom github- DCUBE Store.

Nov yog qhov txuas rau tib yam:

github.com/DcubeTechVentures/TCN75A/blob/master/Java/TCN75A.java

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.

TCN75A

// Tus lej no yog tsim los ua haujlwm nrog TCN75A_I2CS I2C Mini Module

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 TCN75A

{

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

{

// Tsim I2C npav

I2CBus Bus = I2CFactory.getInstance (I2CBus. BUS_1);

// Tau txais I2C ntaus ntawv, TCN75A I2C chaw nyob yog 0x48 (72)

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

// Xaiv kev teeb tsa sau npe, 12-ntsis ADC kev daws teeb meem

ntaus ntawv.write (0x01, (byte) 0x60);

Xov.sleep (500);

// Nyeem 2 bytes ntawm cov ntaub ntawv

// temp msb, kub lsb

byte cov ntaub ntawv = tshiab byte [2];

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

// Hloov cov ntaub ntawv mus rau 12-ntsis

int temp = ((((cov ntaub ntawv [0] & 0xFF) * 256) + (data [1] & 0xF0)) / 16);

yog (temp> 2047)

{

temp -= 4096;

}

ob cTemp = temp * 0.0625;

ob fTemp = (cTemp * 1.8) + 32;

// Cov ntaub ntawv tso tawm rau lub vijtsam

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

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

}

}

Kauj Ruam 4: Cov ntawv thov:

TCN75A yog lub ntsuas cua kub uas tuaj yeem ua haujlwm hauv lub khoos phis tawj ntiag tug thiab servers. Nws tseem tuaj yeem siv rau hauv kev lom zem, chaw ua haujlwm khoom siv, ua haujlwm nyuaj tsav thiab lwm yam khoom siv hauv PC.