Particle Photon - STS21 Kub Sensor Tutorial: 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. Nov yog nws qhov ua piv txwv ntawm kev cuam tshuam nrog Particle Photon.

Kauj Ruam 1: Yam Koj Xav Tau..

1. Particle Photon

2. STS21

3. I²C Cable

4. I²C Shield rau Particle Photon

Kauj Ruam 2: Kev Sib Txuas:

Nqa daim I2C daim ntaub thaiv rau cov photon me me thiab maj mam thawb nws hla cov pins ntawm cov khoom sib nqus.

Tom qab ntawd txuas ib kawg ntawm I2C cable rau STS21 sensor thiab lwm qhov kawg rau I2C daim ntaub thaiv.

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

Kauj ruam 3: Code:

Cov lej me me rau STS21 tuaj yeem rub tawm los ntawm peb GitHub chaw cia khoom- Dcube Store.

Nov yog qhov txuas rau tib yam:

github.com/DcubeTechVentures/STS21

Peb tau siv ob lub tsev qiv ntawv rau cov lej me me, uas yog application.h thiab spark_wiring_i2c.h. Spark_wiring_i2c lub tsev qiv ntawv xav tau los pab txhawb I2C kev sib txuas lus nrog lub sensor.

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 21

// Cov cai no tau tsim los ua haujlwm nrog STS21_I2CS I2C Mini Module muaj nyob hauv Dcube Store.

#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);

}

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.