Kev Ntsuas Kub Siv STS21 thiab Particle Photon: 4 Kauj Ruam

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

STS21 Digital Kub Sensor muab qhov ua tau zoo tshaj plaws thiab txuag chaw hneev taw. Nws muab kev ntsuas ntsuas, kab cim qhia tawm hauv digital, hom I2C. Kev tsim cov ntsuas no yog ua raws CMOSens thev naus laus zis, uas yog tus yam ntxwv zoo rau kev ua tau zoo thiab ntseeg tau ntawm STS21. Kev daws teeb meem ntawm STS21 tuaj yeem hloov pauv los ntawm kev hais kom ua, roj teeb qis tuaj yeem kuaj pom thiab daim tshev nyiaj pab txhim kho kev sib txuas lus ntseeg tau.

Hauv qhov kev qhia no kev cuam tshuam ntawm STS21 sensor module nrog particle photon tau piav qhia. Txhawm rau nyeem qhov ntsuas kub, peb tau siv photon nrog I2c adapter. Qhov I2C adapter ua rau kev txuas mus rau lub ntsuas qhov ntsuas tau yooj yim thiab ntseeg tau ntau dua.

Kauj Ruam 1: Yuav Tsum Kho Vajtse:

Cov ntaub ntawv uas peb xav tau kom ua tiav peb lub hom phiaj suav nrog cov khoom siv hauv qab no:

1. STS21

2. Particle Photon

3. I2C Cable

4. I2C ntaub thaiv npog rau particle photon

Kauj ruam 2: Khoos phis tawj sib txuas:

Tshooj khoos phis tawj sib txuas ntu piav qhia qhov txuas txuas txuas uas xav tau ntawm lub sensor thiab cov duab photon. Ua kom muaj kev sib txuas raug yog qhov tseem ceeb xav tau thaum ua haujlwm ntawm ib qho system rau qhov xav tau cov zis. Yog li, qhov xav tau kev sib txuas yog raws li hauv qab no:

STS21 yuav ua haujlwm dhau I2C. Nov yog qhov piv txwv kab hluav taws xob daim duab, qhia txog yuav ua li cas xaim txhua lub interface ntawm lub sensor.

Tawm-ntawm-lub thawv, lub rooj tsavxwm tau teeb tsa rau I2C interface, zoo li peb pom zoo siv qhov kev sib txuas no yog tias koj tsis ntseeg lwm yam. Txhua yam koj xav tau yog plaub lub xov hlau!

Tsuas yog plaub qhov kev sib txuas xav tau Vcc, Gnd, SCL thiab SDA tus pin thiab cov no txuas nrog kev pab ntawm I2C cable.

Cov kev sib txuas no tau qhia hauv cov duab saum toj no.

Kauj Ruam 3: Txoj Cai Rau Kev Ntsuas Kub:

Cia peb pib nrog cov lej me me tam sim no.

Thaum siv lub ntsuas ntsuas nrog Arduino, peb suav nrog application.h thiab lub tsev qiv ntawv spark_wiring_i2c.h. "application.h" thiab lub tsev qiv ntawv spark_wiring_i2c.h muaj cov haujlwm uas pab txhawb kev sib txuas lus i2c ntawm lub sensor thiab cov khoom me me.

Tag nrho cov cai hauv qab no tau muab rau hauv qab no kom yooj yim ntawm tus neeg siv:

#suav nrog

#suav nrog

// STS21 I2C chaw nyob yog 0x4A (74)

#define ntxiv 0x4A

ntab cTemp = 0.0;

void teeb tsa ()

{

// Teem sib txawv

Particle.variable ("i2cdevice", "STS21");

Particle.variable ("cTemp", cTemp);

// Pib I2C kev sib txuas lus li MASTER

Hlau.begin ();

// Pib kev sib txuas lus, teeb tsa tus lej = 9600

Serial.begin (9600);

ncua (300);

}

void lub voj ()

{

unsigned int cov ntaub ntawv [2];

// Pib I2C Kev Kis

Wire.beginTransmission (addr);

// Xaiv tsis tuav tus tswv

Hlau.write (0xF3);

// Xaus I2C Kev Kis

Wire.endTransmission ();

ncua (500);

// Thov 2 bytes ntawm cov ntaub ntawv

Wire.requestFrom (addr, 2);

// Nyeem 2 bytes ntawm cov ntaub ntawv

yog (Wire.available () == 2)

{

cov ntaub ntawv [0] = Wire.read ();

cov ntaub ntawv [1] = Wire.read ();

}

// Hloov cov ntaub ntawv

int rawtmp = cov ntaub ntawv [0] * 256 + cov ntaub ntawv [1];

int tus nqi = rawtmp & 0xFFFC;

cTemp = -46.85 + (175.72 * (tus nqi / 65536.0));

ntab fTemp = cTemp * 1.8 + 32;

// Tso tawm cov ntaub ntawv rau dashboard

Particle.publish ("Kub hauv Celsius:", String (cTemp));

Particle.publish ("Kub hauv Fahrenheit:", String (fTemp));

ncua (1000);

}

Particle.variable () muaj nuj nqi tsim cov kev hloov pauv kom khaws cov zis tawm ntawm lub sensor thiab Particle.publish () muaj nuj nqi qhia cov zis ntawm lub dashboard ntawm lub xaib.

Cov zis sensor tau pom hauv daim duab saum toj no rau koj siv.

Kauj Ruam 4: Cov ntawv thov:

STS21 Digital Kub Sensor tuaj yeem ua haujlwm hauv cov kab ke uas xav tau qhov ntsuas kub kom raug. Nws tuaj yeem suav nrog hauv ntau lub tshuab computer, cov cuab yeej siv kho mob thiab kev tswj hwm kev lag luam nrog qhov xav tau ntawm kev ntsuas kub nrog qhov ua tau zoo.