UM3078 ST25DVXXKC Linux User Space Driver
Selelekela
Tokomane ena e bonts'a mokhoa oa ho sebelisa sephutheloana sa software sa STSW-ST25DV009 ho laola ST25DVXXKC e matla ea NFC. tag ho tsoa sethaleng sa Linux®. Sephutheloana sa software sa STSW-ST25DV009 se fana ka mokhanni oa sebaka sa mosebelisi oa Linux® le ba bang ba peleamptse ka hlophisoang hore li sebetse sethaleng sefe kapa sefe sa Linux®. ST25DVXXKC ke NFC e matla tag, e ka laoloang ke 'mali oa RFID kapa ka fono ea NFC, e boetse e na le I2C interface ho buisana le MCU kapa MPU. ST25DVXXKC ea fumaneha, mohlalaample, ho boto ea katoloso ea X-NUCLEO-NFC07A1. Lintlha le litokomane tse amanang le likarolo tsa NFC, boto ea katoloso ea X-NUCLEO‑NFC07A1 le software ea STSWST25DV009 li fumaneha ho www.st.com.
Morero
ST25DVXXKC e matla ea NFC/RFID tags ke li-circuits tse kopantsoeng tse ka buisanang ka bobeli:
- Babali ba RFID le mehala ea NFC, e thehiloeng ho ISO/IEC 15693 le NFC Forum Type 5 tag litlhaloso.
- MCU kapa MPU e sebelisang sebopeho sa I2C.
Lisebelisoa tsena li ka sebelisoa sethaleng sa Linux ho nolofalletsa puisano e se nang mohala, ho fetisetsa data habonolo ho tloha sethaleng sa Linux ho ea ho smartphone (mohlala: URL, GPS coordinates, Out-Of-Band data pairing, joalo-joalo). Sephutheloana sa software sa STSW‑ST25DV009 se fana ka khoutu e hlokahalang ho laola sesebelisoa sa ST25DVXXKC ho tsoa sebakeng sa mosebelisi oa sethala sa Linux se nang le molaoli oa I2C.
Sebopeho sa software
Software ea STSW-ST25DV009 e arotsoe ka mekhahlelo e mengata:
- ST25DVXXKC mokhanni oa likarolo
- Sephutheloana sa tšehetso sa boto
- NDEF laeborari ea bohareng
- Sample dikhoutu tsa morero
ST25DVXXKC mokhanni oa likarolo
Mokhanni oa karolo ea ST25DVXXKC o fana ka mekhoa ea ho lokisa le ho laola sesebelisoa sa ST25DVXXKC. Karolo ena ea khoutu e ikemetse ho hardware, 'me e hloka hore mesebetsi e meng ea motheo ea IO e kenngoe ts'ebetsong (sheba sephutheloana sa tšehetso sa Boto ea Karolo ea 2.2) joalo ka I2C ho bala / ho ngola, taolo ea gpio. Mokhanni oa karolo ea ST25DVXXKC files li bukeng ea Bakhanni/BSP/Components/ST25DVxxKC.
Sephutheloana sa tšehetso sa boto
Sephutheloana sa tšehetso sa boto se sebelisa likarolo tse peli tse fapaneng:
- Mesebetsi ea boemo bo tlase ba IO e bitsoang ke mokhanni oa karolo ea ST25DVXXKC
- API ho mekhoa ea ho khanna karolo ea ST25DVXXKC
Sephutheloana sa tšehetso sa boto files li bukeng ea Drivers/BSP/Linux.
Mesebetsi ea boemo bo tlase ba IO
Lera le tlase la IO le sebelisa mesebetsi eohle e tlase e hlokoang ke mokhanni oa ST25DVXXKC. Lera lena le kengoa ts'ebetsong bukeng ea Bakhanni / BSP / Linux le filee hlalositsoe ho Lethathamo la 1.
| Files | Tlhaloso |
| Tsena filee phethahatsa mesebetsi ho: | |
| st25dv-i2c_linux.c | • Hlophisa, bala le ho ngola sehokelo sa I2C |
| st25dv-i2c_linux.h | • Fumana tike ea millisecond |
| Khoutu ena e itšetlehile ka /dev/i2c-X file ho nka taolo ea peripheral ea I2C. | |
| st25dv-i2c-gpo.c st25dv-i2c-gpo.h | Tsena files kenya tšebetsong mesebetsi ea ho lokisa le ho amohela litšitiso ho tsoa ho GPO pin ea ST25DVXXKC.
Khoutu ena e sebelisa /dev/gpiochipX file le khoele e inehetseng ea ho khetha bakeng sa ketsahalo ho GPIO. |
|
st25dv-i2c-lpd.c st25dv-i2c-lpd.h |
Tsena files kenya tshebetsong mesebetsi ho lokisa le ho laola pini e tlase ea matla a ST25DVXXKC. Khoutu ena e sebelisa tse latelang files ho laola GPIO:
•/sys/class/gpio/export •/sys/class/gpio/gpioXX/direction • /sys/class/gpio/gpioXX/value. |
Mesebetsi ena e tobane le boto e sebelisitsoeng 'me e tlameha ho ikamahanya le sethala seo li sebelisoang ho sona (sheba Karolo ea 3 Mokhoa oa ho hlophisa boto).
API ho mekhoa ea ho khanna ea ST25DVXXKC
API ena ke sekoahelo feela ho potoloha mokhanni oa karolo ea ST25DVXXKC. E kenngoa ts'ebetsong ho Drivers/BSP/Linux/bsp_nfctag.c le Drivers/BSP/Linux/bsp_nfctag.h files.
NDEF laeborari ea bohareng
Seboka sa NFC se hlalosa mokhoa o tloaelehileng oo o ka o sebelisang ha u bala/u ngola sesebelisoa sa NFC. Sebopeho sena se tsejoa e le
NDEF melaetsa. Laeborari ea NDEF e sebelisa mekhoa ea boemo bo holimo ho fomata data habonolo hore e lumellane le NDEF
mokgoa. Laeborari ena ea STMicroelectronics e fanoa e le sesebelisoa sa mahareng, se ikemetseng ka botlalo ho tsoa ho hardware le
e tlang le sehokelo file ho kengoa ts'ebetsong bakeng sa sethala se lebisitsoeng.
Ka har'a sephutheloana sa software sa STSW-ST25DV009 sebopeho sena fileli kengoa tšebetsong ka:
- Merero\NDEF_URI\Src\lib_NDEF_config.c
- Merero\NDEF_BLUETOOTH\Src\lib_NDEF_config.c
Sesebelisoa sa bohareng sa laeborari ea NDEF files li bukeng ea Middlewares/ST/lib_nfc
Sample merero
Karolong ena, nako e khutšoanyaneview tsa sample merero e kenyellelitsoeng ka har'a pakete ea STSW-ST25DV009 e fanoe. The sample merero:
- e tlameha ho ikamahanya le sethala sa Linux se lebisitsoeng (joalokaha ho hlalositsoe Karolong ea 3 Mokhoa oa ho hlophisa boto)
- bonts'a mosebelisi mokhoa oa ho sebelisa li-API ho qala le ho sebelisa NFC/RFID e matla tag IC (ST25DVxxKC sesebelisoa)
Likarolo tsa sampmerero e ka har'a ./Projects directory.
- NDEF_URI
Sesebelisoa sena se bontša mokhoa oa ho ngola molaetsa o bonolo oa URI NDEF ho ST25DVXXKC EEPROM u sebelisa NDEF lib middleware. Molaetsa o hlaha ha molaetsa o ngotswe ka katleho. Smartphone kapa sebali sa NFC se ka sebelisoa ho bala molaetsa oa NDEF_URI. - NDEF_BLUETOOTH
Sesebelisoa sena se bontša mokhoa oa ho ngola molaetsa oa Bluetooth® OOB NDEF ho ST25DVXXKC EEPROM u sebelisa NDEF lib middleware. Molaetsa o hlaha ha molaetsa o ngotswe ka katleho. Ho ka sebelisoa smartphone kapa sebali sa NFC ho bala molaetsa oa NDEF_BLUETOOTH. - GPO (sephetho sa sepheo se akaretsang)
Example bontša mokhoa oa ho nolofalletsa le ho sebelisa GPO. Kamora ho qala, tšitiso e lokiselitsoe ho bona liphetoho tsa tšimo haufi le ST25DVXXKC. Molaetsa o hlaha ha lebala le fumanwa le ha lebala le nyamela. - I2 TS'IRELETSO
Example bontša mokhoa oa ho theha libaka ho ST25DVXXKC le mokhoa oa ho li sireletsa. Mongolo o hlahisoa ho console. - LPD (motlakase o tlase)
ExampLe e bonts'a mokhoa oa ho kenya konopo ea low power down (LPD). Ka ho kenya "1" kapa "0", phini ea LPD e ea sebetsa kapa ea tima. Ha pin ea LPD e sebetsa, ST25DVXXKC VCC e khaotsoe, tšebeliso ea matla e fokotsehile 'me puisano ka I2C ha e fumanehe.
Hlokomela: Teko ena e ke ke ea etsoa ka boto ea katoloso ea X-NUCLEO‑NFC07A1 kaha boto ha e hokele phini e joalo. - Lebokose la mangolo
Example e bonts'a mokhoa oa ho ngola molaetsa ka lebokoseng la poso le mokhoa oa ho bala ngoliso ea boemo ba lebokose la poso ea sesebelisoa sa ST25DVXXKC. Mongolo o a hlaha. - I2CCChannel
Example e bonts'a mokhoa oa ho fetola aterese ea lekhoba la I2C mme e bonts'a hore ho ngola molaetsa ka lebokoseng la poso le ho bala lengolo la boemo ba poso ea mochine oa ST25DVXXKC ka bobeli ba sebetsa ka aterese e ncha ea lekhoba. Mongolo oa bonts'oa mme aterese ea lekhoba la I2C e khutlisetsoa boleng ba kamehla.
Hlokomela: Haeba mosebelisi a emisa ts'ebeliso pele e fela, aterese e loketseng ea lekhoba ea I2C e tlameha ho sebelisoa bakeng sa likhokahano tse latelang le ST25DVXXKC. - I2CMode
Example bonts'a mokhoa oa ho fetola mokhoa oa makhoba oa I2C (Normal/RF Off) le hore ka I2C lekhoba le behiloeng ho 'RFOFF' ha ho sa na puisano ea NFC e sebetsoa athe ka I2C mokhoa oa makhoba o behiloeng ho 'Ntloaelehileng' puisano ea NFC e sebetsoa.
Mokhoa oa ho hlophisa boto
Sebaka sa sephutheloana sa tšehetso sa boto se tlameha ho ikamahanya hanyenyane le sethala sa Linux se lebisitsoeng, e le hore ho khethoe I2C peripheral ho buisana le ST25DVXXKC le GPIOs e hokahane le ST25DVXXKC GPO le LPD pins. Litlhaloso tsohle tse hlokahalang li thathamisitsoe ho tse latelang file: Bakhanni/BSP/Linux/hwconfig.h.
Lethathamo la 2. Tlhaloso ea tlhophiso ea Hardware:
| Sebopeho | Hlalosa | Tlhaloso |
| I2C | ST25DV_I2C_NR | E hlalosa nomoro ea peripheral ea I2C e sebelisoang ho buisana le ST25DVXXKC.
Boleng bo sebelisoa ho phethela tsela e eang /dev/i2c-X file. |
| GPO | ST25DV_GPO_GPIOCHIP | E hlalosa nomoro ea GPIOCHIP e hokahaneng le phini ea ST25DVXXKC GPO.
Boleng bo sebelisetsoa ho phethela tsela e eang ho /dev/gpiochipX file. |
| ST25DV_GPO_PIN | E hlalosa nomoro ea phini ea GPIO ea GPIOCHIP e hokahaneng le phini ea ST25DVXXKC GPO. | |
| LPD | ST25DV_LPD_PIN | E hlalosa nomoro ea phini ea GPIO ea lefats'e e hokahantsoeng le phini ea ST25DVXXKC LPD. E sebelisetsoa ho romela GPIO ena. |
| ST25DV_LPD_DIRECTION | E hlalosa tsela ea ho ea Linux file ho hlalosa tataiso ea GPIO e hokahantsoeng le phini ea ST25DVXXKC LPD joalo ka:
/sys/class/gpio/gpioXX/direction |
|
| ST25DV_LPD_VALUE | E hlalosa tsela ea ho ea Linux file ho hlalosa boleng ba GPIO bo hokahaneng le phini ea ST25DVXXKC LPD joalo ka:
/sys/class/gpio/gpioXX/value |
Ho hlophisoa ha Hardware
Litlhoko tsa Hardware:
- Mofuta o thehiloeng ho Ubuntu oa PC/Virtual-machine 16.04 kapa ho feta
- Letlapa la STM32MP157F-DK2
- X-NUCLEO-NFC07A1
- Karete ea 8 GB ea micro SD ho qala STM32MP157F-DK2
- Sebali sa karete ea SD / khokahano ea LAN
- thapo ya USB ya Mofuta wa A ho isa ho Mofuta o Monyane wa B wa USB (ha o rata)
- thapo ea USB ea Mofuta oa A ho ea ho Mofuta oa C
- Phepelo ea motlakase ea 5V 3A e lumellanang le USB PD
Mochini oa PC / Virtual o theha sethala sa nts'etsopele se fapaneng ho aha sample merero ea kopo khoutu. Hardware e hokahane ka tsela e latelang:
- Ho ipapisitse le STM32MP157F-DK2 tlhophiso ea boto ea I2C (e tloaelehileng, e potlakileng, e potlakileng+), X-NUCLEO-NFC07A1 boto ea katoloso ea I2C pullup resistors (R5 le R6) e ka eketseha ho fihla ho 10 kΩ.
- Hokela boto ea katoloso ea X-NUCLEO-NFC07A1 lihokelong tsa Arduino® ka lehlakoreng le ka tlase la boto ea ho sibolla ea STM32MP157F-DK2.
- Haeba ho hlokahala, hokela ST-LINK programmer/debugger e kenelletseng letlapeng la phumano ho amohela komporo ka tsela ea mofuta oa USB micro B port (CN11).
- Matlafatsa boto ea ho sibolla ka boema-kepe ba USB Type C (CN6).
Ho bokella le ho tsamaisa sample merero
E 'ngoe le e' ngoe ea STSW-ST25DV009 sample project tla le makefile 'me e ka bokelloa ho sebelisoa moqapi oa C joalo ka GCC. Laeborari ea pthread Linux e sebelisoa ho theha khoele e lemohang ketsahalo moleng oa GPO, laebrari ena ea hlokahala bakeng sa khokahano e nepahetseng ka nako ea ho bokella. Mekhoa ea ho bokella le ho tsamaisa:
- Ho moamoheli oa PC:
- kopitsa lifate tsohle tsa ST25DVLinux files ho PC / Virtual-mochini: scp -r :.
- Ho PC/Mochini oa Virtual:
- kopanya ts'ebeliso (sena se etsa hore ho khonehe ho sebetsa ka mokhoa o tsitsitseng file): cd ~//Projects/ hloekisa tsohle
- kopi exe file ho Linux target board (RPi, STM32MP157F-DK2, …): scp ~//Projects//st25dv-i2c_ motso @:.
- Lethathamo la lintlha tsa STM32MP157F-DK2
- tsamaisa kopi e qotsitsoeng file: chmod +x st25dv-i2c_ ./st25dv-i2c_
Nalane ea ntlafatso
TSEBISO EA BOHLOKOA – BALA KA HLOKO
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