Kev Ntsuas Kub Siv AD7416ARZ thiab Raspberry Pi: 4 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

AD7416ARZ yog 10-Ntsuas qhov ntsuas kub nrog plaub txoj hauv kev sib piv rau cov hloov pauv digital thiab ib qho ntawm lub ntsuas kub ntsuas tau suav nrog hauv nws. Qhov ntsuas kub ntawm qhov chaw tuaj yeem nkag mus tau los ntawm ntau txoj hauv kev. Qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas tau zoo tau dhau los ua tus qauv kev lag luam raws li daim ntawv, qhov tseem ceeb thiab kev txawj ntse, muab kev ntsuas ntsuas, ntsuas qhov ntsuas qhov ntsuas hauv digital, hom I2C.

Hauv qhov kev qhia no kev cuam tshuam ntawm AD7416ARZ sensor module nrog raspberry pi tau pom thiab nws cov phiaj xwm siv cov lus nab nab kuj tau piav qhia. Txhawm rau nyeem qhov ntsuas kub, peb tau siv raspberry pi nrog I2C adapter Qhov no 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. AD7416ARZ

2. Raspberry Pi

3. I2C Cable

4. I2C Shield rau raspberry pi

5. Ethernet Cable

Kauj ruam 2: Khoos phis tawj sib txuas:

Tshooj khoos phis tawj sib txuas ntu piav qhia qhov txuas txuas uas xav tau ntawm lub ntsuas cua thiab raspberry pi. 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:

AD7416ARZ 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:

Qhov zoo ntawm kev siv raspberry pi yog, uas yog muab rau koj qhov kev hloov pauv ntawm cov lus programming uas koj xav tau los teeb tsa lub rooj tsav xwm txhawm rau txhawm rau cuam tshuam lub sensor nrog nws. Kev siv cov txiaj ntsig zoo ntawm pawg thawj coj no, peb tab tom qhia ntawm no nws cov phiaj xwm hauv nab hab sej. Tus nab npawb nab npawb rau AD7416ARZ tuaj yeem rub tawm los ntawm peb lub zej zog github uas yog Tswj Txhua Lub Zej Zog.

Ntxiv rau qhov yooj yim ntawm cov neeg siv, peb tab tom piav qhia cov cai ntawm no thiab:

Raws li thawj kauj ruam ntawm kev sau koj yuav tsum rub lub tsev qiv ntawv smbus thaum muaj nab nab, vim tias lub tsev qiv ntawv no txhawb nqa cov haujlwm siv hauv txoj cai. Yog li, txhawm rau rub lub tsev qiv ntawv koj tuaj yeem mus ntsib qhov txuas hauv qab no:

pypi.python.org/pypi/smbus-cffi/0.5.1

Koj tuaj yeem luam tus nab npawb nab npawb ua haujlwm rau lub ntsuas no los ntawm no kuj:

ntshuam smbus

lub sij hawm ntshuam

# Tau I2C npav

npav = smbus. SMBus (1)

# AD7416ARZ chaw nyob, 0x48 (72)

# Nyeem cov ntaub ntawv rov qab fom 0x00 (00), 2 bytes

# temp MSB, temp LSB

cov ntaub ntawv = bus.read_i2c_block_data (0x48, 0x00, 2)

# Hloov cov ntaub ntawv mus rau 10-ntsis

temp = ((cov ntaub ntawv [0] * 256) + (data [1] & 0xC0)) / 64

Yog tias kub> 511:

TSI -1024

cTemp = lub sij hawm * 0.25

fTemp = cTemp * 1.8 + 32

# Cov ntaub ntawv tso tawm rau lub vijtsam

luam tawm "Kub hauv Celsius: %.2f C" %cTemp

luam tawm "Kub hauv Fahrenheit: %.2f F" %fTemp

Ib feem ntawm cov cai hais hauv qab no suav nrog cov tsev qiv ntawv xav tau los ua kom raug ntawm cov nab npawb nab npawb.

ntshuam smbus

lub sij hawm ntshuam

Txoj cai tuaj yeem ua tiav los ntawm kev ntaus cov lus hais hauv qab no hauv kab hais kom ua.

$> nab nab AD7416ARZ.py

Cov zis ntawm lub ntsuas kuj tseem muaj nyob hauv daim duab saum toj no rau kev siv ntawm tus neeg siv.

Kauj Ruam 4: Cov ntawv thov:

AD7416ARZ yog 10-Ntsuas Kub ntsuas nrog plaub txoj hauv kev sib piv rau digital hloov pauv tuaj yeem ua haujlwm ntawm Kev Tshawb Nrhiav Cov Ntaub Ntawv nrog ntsuas kub ib puag ncig. Nws kuj tseem tuaj yeem ua haujlwm hauv Cov txheej txheem tswj kev lag luam, Automotive Roj teeb-them daim ntawv thov thiab Cov khoos phis tawj ntiag tug.