UM3078 ST25DVXXKC Linux onye ọrụ ohere ọkwọ ụgbọ ala
Okwu mmalite
Akwụkwọ a na-egosi otu esi eji ngwungwu ngwanrọ STSW-ST25DV009 jikwaa ST25DVXXKC siri ike NFC tag site na Linux® ikpo okwu. Ngwa ngwanrọ STSW-ST25DV009 na-enye Linux® onye ọkwọ ụgbọ ala ohere yana ụfọdụ exampEnwere ike ịhazi nke ahụ ka ọ na-agba ọsọ n'elu ikpo okwu Linux ọ bụla. ST25DVXXKC bụ NFC ike tag, nke onye na-agụ RFID ma ọ bụ ekwentị NFC nwere ike ijikwa ya, ọ nwekwara interface I2C iji kparịta ụka na MCU ma ọ bụ MPU. ST25DVXXKC dị, maka example, na bọọdụ mgbasawanye X-NUCLEO-NFC07A1. Ozi na akwụkwọ metụtara akụkụ NFC, bọọdụ mgbasawanye X-NUCLEO-NFC07A1 yana ngwa STSWST25DV009 dị na www.st.com.
Ebumnuche
ST25DVXXKC NFC/RFID ike tags bụ sekit agbakwunyere nwere ike ịkparịta ụka na ha abụọ:
- Ndị na-agụ RFID na ekwentị NFC, dabere na ISO/IEC 15693 na NFC Forum Ụdị 5. tag nkọwa.
- Otu MCU ma ọ bụ MPU na-eji interface I2C.
Enwere ike iji ngwaọrụ ndị a n'elu ikpo okwu Linux iji mee ka nkwukọrịta ikuku nwee ike ịnyefe data ngwa ngwa site na ikpo okwu Linux gaa na ama (dịka ọmụmaatụ: URL, GPS nhazi, Out-Of-band data pairing data, and on). Ngwa ngwanrọ STSW-ST25DV009 na-enye koodu achọrọ iji jikwaa ngwaọrụ ST25DVXXKC site na oghere onye ọrụ nke ikpo okwu Linux nwere njikwa I2C.
Nhazi ngwanrọ
E kewara sọftụwia STSW-ST25DV009 n'ọtụtụ ọkwa:
- Onye ọkwọ ụgbọ ala ST25DVXXKC
- ngwugwu nkwado osisi
- NDEF ọbá akwụkwọ middleware
- Sampkoodu oru ngo
Onye ọkwọ ụgbọ ala ST25DVXXKC
Onye ọkwọ ụgbọ ala ST25DVXXKC na-enye ụzọ iji hazie na jikwaa ngwaọrụ ST25DVXXKC. Akụkụ a nke koodu ahụ nwere onwe ya na ngwaike, ọ na-achọkwa ka emejuputa ụfọdụ ọrụ IO (lee ngalaba 2.2 ngwugwu nkwado Board) dị ka I2C ịgụ / dee, njikwa gpio. Onye ọkwọ ụgbọ ala ST25DVXXKC files dị na ndị ọkwọ ụgbọala/BSP/Components/ST25DVxxKC ndekọ.
ngwugwu nkwado osisi
Ngwungwu nkwado bọọdụ na-arụ akụkụ abụọ dị iche iche:
- Ọrụ IO dị ala nke onye ọkwọ ụgbọ ala ST25DVXXKC na-akpọ
- API na ụzọ ọkwọ ụgbọ ala ST25DVXXKC
Ngwungwu nkwado osisi files dị na ndekọ ọkwọ ụgbọala/BSP/Linux.
Ọrụ IO dị ala
Igwe oyi akwa IO dị ala na-arụ ọrụ niile dị ala nke onye ọkwọ ụgbọ ala ST25DVXXKC chọrọ. A na-emejuputa akwa akwa a na ndekọ ndị ọkwọ ụgbọ ala/BSP/Linux nwere ya files kọwara na tebụl 1.
| Files | Nkọwa |
| Ndị a filemejuputa ọrụ ndị a: | |
| st25dv-i2c_linux.c | • Hazie, gụọ na dee interface I2C |
| st25dv-i2c_linux.h | • Nweta akọrọ millisekọnd |
| Koodu a dabere na /dev/i2c-X file iji weghara I2C peripheral. | |
| st25dv-i2c-gpo.c st25dv-i2c-gpo.h | Ndị a files mejuputa ọrụ ahụ iji hazie ma nweta nkwụsịtụ site na pin GPO nke ST25DVXXKC.
Koodu a na-eji /dev/gpiochipX file na eriri raara onwe ya nye maka ntuli aka maka emume na GPIO. |
|
st25dv-i2c-lpd.c st25dv-i2c-lpd.h |
Ndị a files mejuputa atumatu iji hazie na jikwaa obere ike ala nke ST25DVXXKC. Koodu a na-eji ihe ndị a files ijikwa GPIO:
•/sys/klas/gpio/bupu •/sys/klas/gpio/gpioXX/direction • /sys/class/gpio/gpioXX/value. |
Ọrụ ndị a bụ kpọmkwem na bọọdụ eji eme ihe, a ga-emerịrị ya ka ọ dị n'elu ikpo okwu a na-eji ha eme ihe (lee Nkebi nke 3 Otu esi ahazi bọọdụ).
API gaa na ụzọ ọkwọ ụgbọ ala ST25DVXXKC
API a bụ naanị ihe mkpuchi ihe n'akụkụ ọkwọ ụgbọ ala ST25DVXXKC. A na-emejuputa ya na Drivers/BSP/Linux/bsp_nfctag.c na ndị ọkwọ ụgbọala/BSP/Linux/bsp_nfctag.h files.
NDEF ọbá akwụkwọ middleware
Nzukọ NFC na-akọwa usoro ọkọlọtọ ị ga-eji mgbe ị na-agụ / na-ede ngwaọrụ NFC. A maara usoro a dị ka
Ozi NDEF. Ọbá akwụkwọ NDEF na-eme usoro dị elu iji hazie data n'ụzọ dị mfe ka ọ bụrụ nnabata NDEF
uzo. A na-ebunye ọba akwụkwọ STMicroelectronics a dị ka etiti, nweere onwe ya kpamkpam na ngwaike yana
na-abịa na interface file a ga-emejuputa maka ikpo okwu ezubere iche.
Na ngwungwu ngwanrọ STSW-ST25DV009 interface ndị a fileA na-emejuputa atumatu na:
- Projects\NDEF_URI\Src\lib_NDEF_config.c
- Projects\NDEF_BLUETOOTH\Src\lib_NDEF_config.c
Ọbá akwụkwọ NDEF middleware files dị na Middlewares/ST/lib_nfc ndekọ
Sample oru ngo
N'akụkụ a, a obere n'eluview nke sample oru ngo gụnyere na STSW-ST25DV009 mkpọ e nyere. Ihe sample oru ngo:
- a ga-emegharị na ikpo okwu Linux ezubere iche (dị ka akọwara na ngalaba 3 Otu esi ahazi bọọdụ)
- gosi onye ọrụ ka esi eji API bido nke ọma wee jiri NFC/RFID dị ike tag IC (ngwaọrụ ST25DVxxKC)
Ndị sample oru ngo dị na ./Projects ndekọ.
- NDEF_URI
Ngwa a na-egosi otu esi ede ozi URI NDEF dị mfe na ST25DVXXKC EEPROM site na iji NDEF lib middleware. A na-egosipụta ozi mgbe edere ozi nke ọma. Enwere ike iji smartphone ma ọ bụ onye na-agụ NFC gụọ ozi NDEF_URI. - NDEF_BLUETOOTH
Ngwa a na-egosi otu esi ede ozi Bluetooth® OOB NDEF na ST25DVXXKC EEPROM site na iji NDEF lib middleware. A na-egosipụta ozi mgbe edere ozi nke ọma. Enwere ike iji smartphone ma ọ bụ onye na-agụ NFC gụọ ozi NDEF_BLUETOOTH. - GPO (mpụta ebumnuche izugbe)
Nke a example gosi otu esi eme ka ma jiri GPO. Mgbe mmalite, a na-ahazi nkwụsịtụ iji chọpụta mgbanwe mpaghara na nso ST25DVXXKC. A na-egosipụta ozi mgbe achọpụtara ubi na mgbe ubi ahụ ga-apụ n'anya. - I2CPROTECTION
Nke a example gosi otu esi emepụta mpaghara na ST25DVXXKC yana otu esi echekwa ha. E gosipụtara ederede na njikwa. - LPD (obere ike ala)
Nke a example na-egosi otu esi arụ ọrụ obere ike ala (LPD) pin. Site na itinye "1" ma ọ bụ "0", a na-eme ka pin LPD rụọ ọrụ ma ọ bụ gbanyụọ. Mgbe agbanyere pin LPD, ebipụ ST25DVXXKC VCC, oriri ike kacha nta na nkwukọrịta site na I2C adịghị.
Mara: Enweghị ike iji bọọdụ mgbasawanye X-NUCLEO-NFC07A1 mee ule a n'ihi na bọọdụ anaghị ejikọta ụdị pin ahụ. - Igbe ozi
Nke a example na-egosi otu esi ede ozi n'ime igbe ozi yana otu esi agụ ndekọ ọnọdụ igbe ozi nke ngwaọrụ ST25DVXXKC. Egosiri ederede. - I2Cchannel
Nke a example na-egosi otu esi agbanwe adreesị ohu I2C wee gosi na ịde ozi n'ime igbe ozi na ịgụ akwụkwọ ndekọ aha igbe ozi nke ngwaọrụ ST25DVXXKC na-arụ ọrụ na adreesị ohu ọhụrụ. Egosiri ederede a na adreesị ohu I2C ga-alaghachi na uru ndabara.
Mara: Ọ bụrụ na onye ọrụ kwụsịrị ngwa ahụ tupu njedebe ya, a ga-eji adreesị ohu I2C kwesịrị ekwesị maka ozi ST25DVXXKC na-esote. - I2CMỌd
Nke a example na-egosi otú ịgbanwe I2C ohu mode (Normal/RF Gbanyụọ) na na na I2C ohu mode atọrọ 'RFOFF' ọzọ NFC nkwurịta okwu na-edozi ebe na I2C ohu mode atọrọ 'Normal' na NFC nkwurịta okwu.
Otu esi ahazi bọọdụ
Ngwunye ngwugwu nkwado bọọdụ ga-emerịrị nke ọma na ikpo okwu Linux ezubere iche, ka ịhọrọ mpaghara I2C ka ya na ST25DVXXKC na-ekwurịta okwu na GPIO jikọtara ya na ST25DVXXKC GPO na atụdo LPD. Edepụtara nkọwapụta niile achọrọ na ndị a fileNdị ọkwọ ụgbọala/BSP/Linux/hwconfig.h.
Tebụl 2. Nkọwa nhazi ngwaike:
| Njirimara | Kọwaa | Nkọwa |
| I2C | ST25DV_I2C_NR | Ọ na-akọwapụta ọnụọgụ mpụta I2C ejiri mee mkparịta ụka na ST25DVXXKC.
A na-eji uru ahụ emechaa ụzọ gaa na /dev/i2c-X file. |
| GPO | ST25DV_GPO_GPIOCHIP | Ọ na-akọwa nọmba GPIOCHIP ejikọrọ na pin ST25DVXXKC GPO.
A na-eji uru ahụ emechaa ụzọ gaa na /dev/gpiochipX file. |
| ST25DV_GPO_PIN | Ọ na-akọwapụta nọmba pin GPIO nke GPIOCHIP ejikọrọ na pin ST25DVXXKC GPO. | |
| LPD | ST25DV_LPD_PIN | Ọ na-akọwapụta akara ntụtụ GPIO zuru ụwa ọnụ ejikọrọ na pin ST25DVXXKC LPD. A na-eji ya ebupụ GPIO a. |
| ST25DV_LPD_DIRECTION | Ọ na-akọwa ụzọ nke Linux file na-akọwa ntụziaka GPIO ejikọrọ na pin ST25DVXXKC LPD dị ka:
/sys/class/gpio/gpioXX/direction |
|
| ST25DV_LPD_VALUE | Ọ na-akọwa ụzọ nke Linux file na-akọwa uru GPIO ejikọrọ na pin ST25DVXXKC LPD dị ka:
/sys/class/gpio/gpioXX/value |
Ntọlite ngwaike
Hardware chọrọ:
- Ụdị PC/Virtual-igwe nke dabeere na Ubuntu 16.04 ma ọ bụ karịa
- bọọdụ STM32MP157F-DK2 (ihe nchọpụta)
- X-NUCLEO-NFC07A1
- 8 GB micro SD kaadị iji buut STM32MP157F-DK2
- Njikọ kaadị SD / LAN
- USB Ụdị-A ka ụdị-micro B eriri USB (nhọrọ)
- USB Ụdị A ruo Ụdị-C eriri USB
- USB PD-dabara 5V 3A ike ọkọnọ
Igwe PC/Virtual-igwe na-etolite ikpo okwu mmepe iji wuo sample oru ngo koodu. Ejikọrọ ngwaike dị ka ndị a:
- Dabere na bọọdụ nchọpụta STM32MP157F-DK2 I2C nhazi ọnọdụ (nkịtị, ngwa ngwa, ngwa ngwa +), X-NUCLEO-NFC07A1 mgbasawanye osisi I2C pullup resistors (R5 na R6) nwere ike ịbawanye ruo 10 kΩ.
- Tinye bọọdụ mgbasawanye X-NUCLEO-NFC07A1 na njikọ Arduino® n'akụkụ ala nke bọọdụ nchọpụta STM32MP157F-DK2.
- Ọ bụrụ na achọrọ, jikọọ ST-LINK programmer/debugger agbakwunyere na bọọdụ nchoputa iji kwado PC site na ọdụ ụgbọ USB micro B (CN11).
- Kwanye bọọdụ nchọpụta site na ọdụ ụgbọ USB Ụdị C (CN6).
Na-achịkọta ma na-agba ọsọ sample oru ngo
Nke ọ bụla STSW-ST25DV009 sample oru ngo na-abia na emefile enwere ike chịkọta ya site na iji mkpokọta C dị ka GCC. A na-eji ọba akwụkwọ Linux pthread mepụta eriri na-achọpụta ihe omume na ahịrị GPO, achọrọ ọba akwụkwọ a maka njikọ ziri ezi n'oge nchịkọta. Nchịkọta na usoro usoro:
- Na PC onye ọbịa:
- detuo osisi ST25DVLinux niile files na PC/igwe Virtual: scp -r :
- Na PC/igwe Virtual:
- cross-ịchịkọta ngwa (nke a na-ebute statically jikọtara executable file): cd ~// Ọrụ / mee ka ihe niile dị ọcha
- oyiri exe file gaa na bọọdụ lekwasịrị anya Linux (RPi, STM32MP157F-DK2,…): scp ~//Projects//st25dv-i2c_ mgbọrọgwụ @:.
- Na bọọdụ STM32MP157F-DK2:
- megharịa exe nke oyiri file: chmod +x st25dv-i2c_ ./st25dv-i2c_
Akụkọ ngbanwe
ỌMỤMỤ dị mkpa – Gụọ nke ọma
STMicroelectronics NV na ndị enyemaka ya (“ST”) debere ikike ime mgbanwe, mmezi, nkwalite, mgbanwe na nkwalite na ST.
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