Sida loo BgaraacidaSensor?

1. Asalkii hore

Guud ahaan, marka aan saxno saamaynta dareenka, waxaan marka hore u baahanahay inaan shidno, kaas oo sidoo kale loo yaqaanno soo kicinta dareenka. Qaybtan shaqada waxaa inta badan qabta injineerka darawalka, laakiin mararka qaarkood waxay sidoo kale u baahan tahay in uu sameeyo injineerka hagaajinta.

Laakiin dhab ahaantii, haddii ay si fiican u socoto, ka dib marka la habeeyo habka dareemayaasha, ciwaanka i2c, iyo chip_id sensor ee darawalka dareemayaasha, sawirka waa la soo saari karaa, laakiin inta badan, inta badan maaha mid sahlan, dhibaatooyin badan ayaa la kulmi doona. .

 

2. Habka soo qaadista dareenka

Codso warshadda dareeme sifooyinka loo baahan yahay ee dejinta Sensor, ay ku jiraan xallinta, Mclk, heerka jir, balac yar ee sawirka cayriin, iyo tirada mipi_lanes. Haddii loo baahdo, sharax in heerka ugu sarreeya ee mipi ee ay taageerto madal aan la dhaafi karin;

Ka dib markaad hesho goobta, habee darawalka dareemayaasha, marka hore u habeyn habka dareenka, ciwaanka I2C, chip_id;

Soo hel jaantuska jaantuska Motherboard-ka, xaqiiji qaabeynta qalabka laxiriirta, oo habee koontaroolka pin ee mclk, reset, pwrdn, i2c ee dts sida ku cad jaantuska jaantuska Motherboard-ka;

Ka dib marka tillaabooyinka kor ku xusan la dhammeeyo, haddii aysan jirin wax dhibaato ah oo ku saabsan qalabka, waxaad asal ahaan iftiimin kartaa sawirka, ka dibna u habeyn kartaa wakhtiga soo-gaadhista dareemayaasha, faa'iidada analogga iyo diiwaannada kale si faahfaahsan sida ku cad xaashida xogta dareenka;

 

3. Dhibta oo kooban

a. Sida loo go'aamiyo biinanka dib u dejinta, pwrdn, i2c, mclk?

Marka hore, waa inaad barataa sida loo akhriyo jaantuska jaantuska. Aad ayaan u wareeray markii aan jaantuska helay bilowgii. Waxaan dareemay inay jiraan waxyaabo badan oo qasan. Meel aan ka bilaabo ma garanayo. Runtii, ma jiraan meelo badan oo fiiro gaar ah loo leeyahay. Uma baahni inaan fahmo jaantuska oo dhan.

Sababtoo ah waxaan inta badan habeynaa kamarada, hel qaybta MIPI_CSI interface, sida ku cad Jaantuska a, oo kaliya diiradda saara biinanka xakamaynta ee CM_RST_L (dib u dejin), CM_PWRDN (pwrdn), CM_I2C_SCL (i2c_clk), CM_I2C_SDA (i2c_data), CM mclk) kor

 

b. I2C wuu guuldarraystay?

Ciwaanka i2c si khaldan ayaa loo habeeyey: Guud ahaan, i2c waxa ay leedahay laba ciwaan, heerku wuu ka duwan yahay marka kor iyo hoos loo soo jiido.

Hubi dhibaatada qalabka korantada ee AVDD, DVDD, IOVDD, saddexda sahayda korantada ee qalabyada qaar ayaa ah koronto joogto ah, iyo qaar ka mid ah saddexda sahayda korontada waxaa gacanta ku haya software. Haddii ay gacanta ku hayso software, waxaad u baahan tahay inaad ku darto saddexdan sahay koronto biinka kantaroolka darawalka.

Qaabeynta pin-ka mclk waa khalad: waxaad isticmaali kartaa oscilloscope si aad u cabbirto in saacadda la siiyay dareeme ay diyaar tahay, ama inay saacaddu sax tahay, sida: 24MHz, 27MHz.

Qaabeynta biinanka i2c ee khaldan: Guud ahaan, waxaad hubin kartaa faylka pinmux-pins ee u dhigma ee kantaroolka ugu weyn si aad u xaqiijiso in GPIO u dhigma si sax ah loo qeexay;

 

c. Ma jiro sawir ama muuqaal aan caadi ahayn;

Geli amarka dhinaca ISP si aad u hubiso in uu khalad ka jiro gudbinta mipi.

Calaamadaha mipi waxaa lagu cabbiri karaa oscilloscope.

Qabo sawirka cayriin si aad u aragto haddii ay jirto wax aan caadi ahayn. Haddii ay jirto cillad aan caadi ahayn oo ku jirta sawirka cayriin, guud ahaan waa dhibaato xagga dejinta dareemayaasha. Weydii qof ka socda warshadda dareemayaasha asalka ah inuu eego.

Ka dib kordhinta faa'iidada, waxaa jira xariijimo toosan (sidoo kale loo yaqaan FPN), kuwaas oo la xiriira dareenka, oo guud ahaan helaya warshadda asalka ah ee dareenka si ay ula tacaalaan;