ELECROW DLS29028B2 2.8inch IPS TFT SPI Display module
Tlhahisoleseding ya Sehlahiswa
Litlhaloso:
- Product Name: DLS29028B2&DLS29028B1 2.8inch IPS TFT SPI Display Module
- Mookameli: ILI9341
- Sebopeho: SPI
- Pontšo ea boholo: 2.8 inch
Tlhaloso ea Mohloli
Lenane la lisebelisoa le bontšitsoe setšoantšong se latelang:
Tlhaloso ea Sehokelo
Sebopeho se ka morao ho module se bontšoa setšoantšong se latelang:
Molao-motheo oa ho sebetsa
Kenyelletso ho ILI9341 Controller
Molaoli oa ILI9341 o tšehetsa qeto e phahameng ea 240*320 le GRAM ea 172800-byte. E boetse e tšehetsa 8-bit, 9-bit, 16-bit, le 18-bit parallel port libese tsa data. E boetse e ts'ehetsa likou tsa serial tsa terata tse 3 le tse 4 tsa SPI. Kaha taolo e ts'oanang e hloka palo e kholo ea likou tsa IO, e tloaelehileng haholo ke taolo ea boema-kepe ba SPI. ILI9341 e boetse e ts'ehetsa 65K, 262K RGB ponts'o ea 'mala,' mala oa ponts'o o ruile haholo, ha o ntse o ts'ehetsa ponts'o e potolohang le pontšo ea moqolo le papali ea video, e bonts'a ka mekhoa e fapaneng.
The ILI9341 controller uses 16bit (RGB565) to control a pixel display, so it can display up to 65K colors per pixel. The pixel address setting is performed in the order of rows and columns, and the incrementing and decreasing direction is determined by the scanning mode. The ILI9341 display method is performed by setting the address and then setting the color value.
Selelekela ho SPI Communication Protocol
Nako ea ho ngola ea bese ea SPI ea terata e 4 e bonts'oa setšoantšong se latelang:
CSX ke khetho ea chip ea makhoba, 'me chip e tla lumelloa feela ha CSX e le maemong a tlase a matla.
D/CX ke phini ea taolo ea data/taelo ea chip. Ha DCX e ngola litaelo maemong a tlase, data e ngotsoe maemong a holimo
SCL ke oache ea libese ea SPI, e nang le moeli o mong le o mong o ntseng o phahama o fetisang data e le 'ngoe;
SDA ke data e fetisoang ke SPI, e fetisang likotoana tse 8 tsa data hang. Sebopeho sa data se bontšoa setšoantšong se latelang:
Phahamisa hanyane pele, fetisetsa pele.
Bakeng sa puisano ea SPI, data e na le nako ea phetisetso, e kopantsoeng le karolo ea oache ea nako ea nnete (CPHA) le polarity ea oache (CPOL):
Boemo ba CPOL bo lekanya boemo ba boemo bo sa sebetseng ba oache ea serial synchronous, ka CPOL=0, e bonts'ang boemo bo tlase. Protocol ea phetisetso ea lipara tsa CPOL
Puisano e ne e se na tšusumetso e kaalo;
Bophahamo ba CPHA bo etsa qeto ea hore na oache ea serial synchronous e bokella data moeling oa pele kapa oa bobeli oa ho tlola,
Ha CPHL=0, etsa pokello ea lintlha karolong ea pele ea phetoho;
Motsoako oa mefuta ena e 'meli ea mekhoa e mene ea puisano ea SPI, le SPI0 e sebelisoa hangata Chaena, moo CPHL=0 le CPOL=0
Tlhaloso ea Hardware
6P capacitive touch screen interface FPC
P1 ke sets'oants'o sa FPC se nang le sebaka sa 6P 0.5mm, se sebelisetsoang ho hokahanya thapo ea 6P FPC ea capacitive touch screen le ho hokahanya matšoao.
Phepelo ea motlakase voltage tsitsisa potoloho
Potoloho ena e sebelisetsoa ho tsitsisa phallo ea voltage ea mojule, moo VCC e leng voltage, VCC3.3V ke mojule oa ho kenya voltage, 'me C1 ke "bypass filter capacitor". VCC e ka kopanngoa le 5V kapa 3.3V, 'me e kgothaletswa ho hokela 5V hobane feela ka ho hokela 5V ho ka VCC3.3 tlhahiso 3.3V. Haeba e hokahane le 3.3V, VCC3.3 output voltage tla ba ka tlase ho 3.3V, e leng se tla etsa hore khanya ea backlight ea skrine ea LCD e fifale.
Pokello ea sekotjana sa karete ea SD
SD_ CARD1 ke sekotjana sa karete ea Micro SD bakeng sa ho kenya likarete tsa Micro SD, ho nolofalletsa ho sebelisa mesebetsi ea katoloso ea karete ea SD. Bese ea SPI le LCD tse sebelisitsoeng lia arolelanoa.
Backlight control circuit
R1 e boloketsoe ho lumellana le potoloho ea taolo ea J3Y, ka ho toba e sebelisa 0 ohm resistor. R2 ke sehanyetsi se fokotsang khanya ea morao-rao, R7 ke mohanyetsi oa ho hula, 'me Q1 ke BSS138 N channel-effect transistor. LED ke lets'oao la taolo, 'me LEDK e hokahane le palo e mpe ea leseli le ka morao. Ha LED e emisoa (ntle le letšoao la ho laola), ka lebaka la ho hula ha R7, mohloli oa BSS138 o boemong bo phahameng, ka heke ea oona le ho tsamaisa metsi, LEDK e thehiloe, 'me potoloho ea backlight e tsamaisa, kahoo e khantša leseli. . Ha tlhahiso ea LED e le tlase, mohloli oa BSS138 o tlaase, heke ea oona le drain li khaoloa, LDEK e emisitsoe, 'me potoloho ea backlight e khaotsoe, kahoo e tima leseli; Ha tlhahiso ea LED e le boemong bo phahameng, mohloli oa BSS138 o boemong bo phahameng, heke ea eona le drainage e tsamaisa, LDEK e theohile, 'me potoloho ea backlight e tsamaisa, kahoo e khantša leseli;
Capacitor touch screen IIC signal level conversion circuit
N-channel FETs. CTP_ SDA、CTP_ IIC signal input from SCL main control terminal, 3V3_ CTP_ SDA、3V3_ CTP_ SCL is the converted IIC signal. The function of this circuit is to convert the 5V or 3.3V IIC signal input from the main control terminal into a 3.3V IIC signal, and then input it into the capacitive touch module (because the capacitive touch module can only receive 3.3V signals). It can also convert the 3.3V signal output from the capacitive touch module into a 5V signal and input it to the main control. The principle is (taking SDA as an example): mohloli oa BSS138 o lula o le boemong ba 3.3V, 'me ha CTP_ SDA e le boemong bo tlaase, metsi a BSS138 a le boemong, mohloli oa mohlolitage phahame ho feta drain, heke le drain li tsamaisa, 'me heke e boetse e le boemong bo tlaase, 3V3_ CTP_ SDA ke boemo bo tlaase; Ha CTP_ SDA e le maemong a holimo, ka drainage ea 5V ea BSS138.
Mohloli voltage tlase ho feta mokelikeli, 'me heke le drain li khaotsoe. Heke e huleloa ho fihlela boemong bo phahameng ba 3.3V, ka 3V3_ CTP_ SDA ke boemo bo phahameng. ka ho fapanyetsana.
14P Header pin interface
J2 ke 14P pin, R8 ke mohanyetsi oa ho hula oa karete ea SD CS pin. Pini ea 14P e sebelisetsoa ho hokahanya le taolo e kholo, e ka kenngoa ka ho toba kapa ea hokeloa ka thapo ea DuPont. Hobane karete ea SD le LCD li arolelana bese ea SPI, qala ka ho hula pinana ea CS ea karete ea SD ho tima mesebetsi ea eona le ho qoba likhohlano tsa lisebelisoa tsa libese tsa SPI ha module e sebelisoa.
P2 ke mojule oa 14P FPC cable interface, e ka hokahanngoang feela le taolo e kholo ka thapo ea FPC.
Laola potoloho ea phetoho ea boemo ba lets'oao
U2 is a level conversion IC that converts between 5V and 3.3V. This circuit only uses the one-way function of 5V to 3.3V, and the signals that the module needs to write are converted through this circuit.
18P LCD skrine tjheseletsa segokanyimmediamentsi sa sebolokigolo
QD3222 ke 18P pad e nang le sebaka sa 0.8mm. E sebelisoa ho cheselletsa LCD e le hore e ka fumana matšoao ho tsoa taolong e kholo.
Example litaelo tsa tšebeliso ea lenaneo
Bakeng sa litaelo tse tobileng, ka kopo sheba ho example tokomane ea litaelo tsa tšebeliso ea lenaneo ho example lenaneo la directory.
- A. Hokela mochine oa pontšo ho boto e kholo ea taolo (ho kenya ka ho toba, sebelisa cable ea DuPont kapa FPC cable connection);
- B. Kopanya boto e kholo ea taolo ho PC (e hloka ho kopanngoa ho ea ka mokhoa oa ho jarolla) le matla holim'a boto e kholo ea taolo;
- C. Fetola, bokella, le ho jarolla sample mananeo;
- D. Sheba pontšo ea mojule 'me u hlahlobe hore na lenaneo le sebetsa ka katleho;
Software e tloaelehileng ea lisebelisoa
ExampLenaneo le hloka ho bonts'a Sechaena le Senyesemane, matšoao le litšoantšo, kahoo e hloka ts'ebeliso ea software ea ho nka hlobo. Ho na le mefuta e 'meli ea software e nkang hlobo: Image2Lcd le PCtoLCD2002. Image2Lcd e sebelisoa bakeng sa ho ntša litšoantšo tsa mebala, ha PCtoLCD2002 e sebelisoa bakeng sa mongolo kapa setšoantšo sa monochrome.
Software ea ho nka hlobo ea PCtoLCD2002 e behiloe ka tsela e latelang:
- Dot Matrix Format Selection Yin Code
- Khetha mokhoa oa mola ka mola bakeng sa ho nka hlobo
- Khetha tsela eo hlobo e nkang ka eona ka tsela ea oache (e nang le boemo bo holimo ka pele)
- Nomoro ea Palo ea Khetho ea Sisteme ea Hexadecimal Nomoro
- Kgetho ya Sebopeho se Tloaelehileng sa C51 Format
- Mokhoa o ikhethileng oa ho hlophisa o ka fumanoa ho tse latelang webleqephe:
http://www.lcdwiki.com/Chinese_and_English_display_modulo_settings
Litlhophiso tsa software tsa Image2Lcd li bonts'oa setšoantšong se latelang:
- Software ea Image2Lcd e hloka ho hlophisoa hore e hlahlobe ka holimo, ho tloha ho le letšehali ho ea ho le letona, ho tloha holimo ho ea tlaase, le ka likotoana tse tlaase ka pele.
LBH
- P: Ke software efe e hlokahalang bakeng sa liteko tsa pontšo ea setšoantšo le mongolo?
A: Image extraction software and character extraction software are required for mold taking in sample mananeo.
Litokomane / Lisebelisoa
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ELECROW DLS29028B2 2.8inch IPS TFT SPI Display module [pdf] Bukana ea Mosebelisi DLS29028B2, DLS29028B1, DLS29028B2 2.8inch IPS TFT SPI Display Module, DLS29028B2, 2.8inch IPS TFT SPI Display Module, IPS TFT SPI Display Module, TFT SPI Display Module, SPI Display Module, Display Module |