AN11658 NXP-NCI LPCXpresso example Rev. 1.3 — 25 May 2016 323113 Application note COMPANY PUBLIC Document information Info Content Keywords NXP-NCI, NullOS, NFC, example, LPCXpresso Abstract This document intents to provide a description of the NXPNCI_LPCXpressoExample project. This project demonstrates simple integration of NXP NCI NFC Controller without any OS resources required. AN11658 NXP Semiconductors NXP-NCI LPCXpresso example Revision history Rev Date Description 1.3 20160525 Support of Arduino shields added. 1.2 20150706 1.1 20150521 Support of LPC82x and LPC11Uxx MCU families added. Adding chapter 5.2 for porting to others MCU recommendation Support of LPC11xx MCU family added 1.0 20150310 Released version 0.1 20141015 Initial version of the document Contact information For additional information, please visit: http://www.nxp.com For sales office addresses, please send an email to: [email protected] AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 2 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 1. Introduction The NXP-NCI_LPCXpressoExample project shows how to easily interact with NCI based NXP’s NFC Controller in order to provide NFC capability to an embedded system with no OS resources required. Obviously, this example can easily be ported in a system with RTOS support. This project is based on LPCXpresso platform and runs on NXP LPC122x, LPC11xx, LPC82x or LPC11Uxx microcontroller driving the NFC Controller. The present example demonstrates NDEF functionalities: - AN11658 Application note COMPANY PUBLIC R/W mode: o extract NDEF content from a remote NFC Forum tag o write NDEF content to NFC Forum Type 2 tag o authenticate/read/write MIFARE classic card - P2P mode: exchange (in both way) NDEF content with remote P2P device - Card emulation mode: expose NDEF content to a remote NFC reader All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 3 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 2. HW setup 2.1 LPC82x To set up the project we use LPC824 LPCXpresso board (http://www.embeddedartists.com/products/lpcxpresso/lpc824_xpr.php). Fig 1. LPC824 LPCXpresso board The board must be connected to NFC controller board using the following instructions: Table 1. AN11658 Application note COMPANY PUBLIC HW setup instructions LPC board pin NFC controller signal VOUT 3.3V <-> VBAT VOUT 3.3V <-> VDD(PAD) / PVDD +5V USB out <-> VANT (only OM5578) PIO0.10 / I2C0_SCL <-> I2CSCL PIO0.11 / I2C0_SDA <-> I2CSDA PIO0.13 <-> IRQ PIO0.17 <-> VEN GND <-> GND All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 4 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example This matches Arduino version of OM5577 (http://www.nxp.com/demoboard/OM5577) and OM5578 (http://www.nxp.com/demoboard/OM5578) demo kits. Those kits can then be plugged on LPC11U37H LPCXpresso board to run the example. AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 5 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 2.2 LPC11Uxx To set up the project we use LPC11U37H LPCXpresso board (http://www.embeddedartists.com/products/lpcxpresso/lpc11U37H_xpr.php) . Fig 2. LPC11U37H LPCXpresso board The board must be connected to NFC controller board using the following instructions: Table 2. HW setup instructions LPC board pin NFC controller signal VOUT 3.3V <-> VBAT VOUT 3.3V <-> VDD(PAD) / PVDD +5V USB out <-> VANT (only OM5578) PIO0.4 / I2C-SCL <-> I2CSCL PIO0.5 / I2C-SDA <-> I2CSDA PIO0.2 <-> IRQ PIO0.7 <-> VEN GND <-> GND This matches Arduino version of OM5577 (http://www.nxp.com/demoboard/OM5577) and OM5578 (http://www.nxp.com/demoboard/OM5578) demo kits. Those kits can then be plugged on LPC11U37H LPCXpresso board to run the example. AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 6 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 2.3 LPC122x To set up the project we use LPC1227 LPCXpresso board (http://www.embeddedartists.com/products/lpcxpresso/lpc1227_xpr.php) Fig 3. LPC1227 LPCXpresso board The board must be connected to NFC controller board using the following instructions: Table 3. HW setup instructions LPC board pin NFC controller signal VOUT 3.3V <-> VBAT VOUT 3.3V <-> VDD(PAD) / PVDD +5V USB out <-> VANT (only OM5578) PIO0.10 / I2C-SCL <-> I2CSCL PIO0.11 / I2C-SDA <-> I2CSDA PIO0.21 <-> IRQ PIO0.24 <-> VEN GND <-> GND IRQ and VEN NFC controller signals can eventually connected to other MCU PIOs, in this case the example must be adapted in consequence (see 5.4.2). AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 7 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 2.4 LPC11xx To set up the project we use LPC1114 LPCXpresso board (http://www.embeddedartists.com/products/lpcxpresso/lpc1114_xpr.php) Fig 4. LPC1114 LPCXpresso board The board must be connected to NFC controller board using the following instructions: Table 4. HW setup instructions LPC board pin NFC controller signal VOUT 3.3V <-> VBAT VOUT 3.3V <-> VDD(PAD) / PVDD +5V USB out <-> VANT (only OM5578) PIO0.4 / I2C-SCL <-> I2CSCL PIO0.5 / I2C-SDA <-> I2CSDA PIO3.4 <-> IRQ <-> VEN (Note: wrong text in silkscreen, written 2.4) PIO3.5 (Note: wrong text in silkscreen, written 2.5) AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 8 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example LPC board pin GND NFC controller signal <-> GND IRQ and VEN NFC controller signals can eventually connected to other MCU PIOs, in this case the example must be adapted in consequence (see 5.4.2). AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 9 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 3. SW setup LPCXpresso IDE can be downloaded from http://www.lpcware.com/lpcxpresso/home. 1. Create an empty workplace in LPCXpresso IDE: Fig 5. LPCXpresso IDE workplace 2. Import the project from the NXP-NCI_LPCXpressoExample zip file: AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 10 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example Fig 6. Importing project in LPCXpresso IDE 3. Build the project in « Debug » mode (clicking on the “hammer” icon): Fig 7. Building project in LPCXpresso IDE 4. Debug the project (clicking on the “bug” icon). This is flashing the LPC122x MCU and sets the execution pointer to the first instruction: AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 11 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example Fig 8. Building project in LPCXpresso IDE 5. Start the execution (clicking on « Resume » button or pressing f8). This launches the discovery and following message is displayed in the « console » window of LPCXpresso: Fig 9. AN11658 Application note COMPANY PUBLIC LPCXpresso console window starting project execution All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 12 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 4. Demo 4.1 R/W mode Bringing a NFC Forum Tag containing NDEF content leads to a message display in the « console » window (here the tag contains Text type NDEF message “NXP Semiconductors”): Fig 10. LPCXpresso console window when NDEF tag is read Bringing a MIFARE classic card (with generic keys for sector 1) gives such result: Fig 11. LPCXpresso console window when NDEF tag is read AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 13 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 4.2 P2P mode Bringing a NFC android phone and « beaming » an URL gives such result: Fig 12. LPCXpresso console window when exchanging data with Android NFC phone And simultaneously, the phone displays the received NDEF record from the NXP-NCI example project (NDEF Text type « Test » message). Fig 13. Android phone receiving NDEF message from NXP-NCI example project AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 14 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 4.3 Card Emulation mode Bringing an NFC reader gives such result: Fig 14. LPCXpresso console window when exchanging data with Android NFC phone Note: To perform such scenario an Android phone can be used but then P2P and R/W modes must be disabled and Discovery loop adapted inside the NXP-NCI example project (see following chapters 5.4.1 and 5.4.3 for details) since otherwise the P2P communication is favored. AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 15 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 5. SW description 5.1 Architecture overview Fig 15. Example SW architecture overview The Application consists in one “main.c” file. It uses NFC library API to register for NDEF functionalities and manage NXP-NCI processing. {NXP-NCI} module offers high level NFC API: - Connection and configuration of the NFC controller - Start of the NFC discovery - Wait for NFC discovery - Process the NFC discovery {NDEF library} module is composed of independent sub-module: - {RW_NDEF} implements NDEF extraction from NFC Forum tags (all 4 NFC Forum defined tag types) - {P2P_NDEF} implements NDEF data exchange with P2P device (over NFC Forum LLCP and SNEP protocols) - {T4T_NDEF_emu} implements NDEF message exposure through card emulation (NFC Forum Type 4 Tag protocol) {TML} module brings HW abstraction to NFC library (abstract how the connection to NFC controller IC is managed). {I2C driver} module provides handle on the I2C communication with NFC Controller IC. AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 16 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example {GPIO driver} module provides handle on the NFC Controller VEN (Hard reset) and IRQ (interface interrupt) pins. 5.2 Stack size Below is insights about the stack size, compiled on an ARM Cortex M0: Table 5. Stack size from ARM Cortex M0 Module Size (in bytes) Application 2758 NDEF library 2732 RW_NDEF 112 RW_NDEF_T1T 437 RW_NDEF_T2T 325 RW_NDEF_T3T 337 RW_NDEF_T4T 646 P2P_NDEF 473 T4T_NDEF_emu 402 NXP-NCI 2108 TML 218 I2C driver (based on LPC82x implementation) 272 GPIO driver (based on LPC82x implementation) 158 The NFC library (NDEF library + NXP-NCI) is about 4840 bytes in its full configuration (RW, P2P and Card Emulation) but could be substantially reduced according to the targeted use case (for instance for T2T RW only support, size would be about 1455 bytes). 5.3 Porting recommendation for other MCUs The present code example can be easily ported to any other target providing I2C bus master and GPIO capabilities (I2C master can eventually be implemented in SW via GPIO control in case of no HW support is provided by the target). The only modules requiring adaptations are I2C driver and GPIO driver (relates to how the target provides this support), others modules being platform agnostics. 5.4 Example customization 5.4.1 I2C address NFC Controller I2C address is by default set to 0x28. It can be changed in the file Drivers/inc/driver_config.h: AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 17 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example #define NXPNCI_I2C_ADDR 0x28U Fig 16. I2C address setting 5.4.2 PIOs assignment In case a different connection is used than the one described in chapter 2, the file Drivers/inc/driver_config.h must reflect PIOs assignment: #define #define #define #define PORT_IRQ PORT_VEN PIN_IRQ PIN_VEN PORT0 PORT0 13 // P0.13 17 // P0.17 Fig 17. PIOs assignment 5.4.3 Discovery configuration The discovery loop can be configured by setting “DiscoveryTechnologies” variable inside the “main” function. By default all technologies (required for the aimed demonstration) are enabled: Passive NFCA, NFCB and NFCF as well as Active NFCF, in both POLL and LISTEN modes. Simply adapt the discovery loop by commenting out the related technology you want to remove. unsigned char DiscoveryTechnologies[] = { MODE_POLL | TECH_PASSIVE_NFCA, MODE_POLL | TECH_PASSIVE_NFCB, MODE_POLL | TECH_PASSIVE_NFCF, MODE_POLL | TECH_ACTIVE_NFCF, MODE_LISTEN | TECH_PASSIVE_NFCA, MODE_LISTEN | TECH_PASSIVE_NFCF, MODE_LISTEN | TECH_ACTIVE_NFCA, MODE_LISTEN | TECH_ACTIVE_NFCF}; Fig 18. Discovery configuration variable 5.4.4 Modes compile flags Three compile flags exists in this SW example allowing to separately disable modes: - “RW_SUPPORT” “P2P_SUPPORT” “CARDEMU_SUPPORT” There are defined by default (all 3 modes supported). To disable a mode just remove the related definition in the project properties: AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 18 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example Fig 19. LPCXpresso project properties AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 19 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 6. Abbreviations AN11658 Application note COMPANY PUBLIC Abbr. Meaning AN Application Note EMU Emulation (card emulation) GND Ground GPIO General Purpose Input Output HW Hardware I²C Inter-Integrated Circuit (serial data bus) IC Integrated Circuit IO Input / Output IRQ Interrupt Request NDEF NFC Data Exchange Format NFC Near Field Communication NFCC NFC Controller OS Operating System P2P Peer to peer PCD Proximity Coupling Device (Contactless reader) PIO Programmed Input/Output PICC Proximity Integrated Circuit Card (Contactless card) RF Radiofrequency RTOS Real Time Operating System RST Reset RW Reader/Writer SW Software T1T Type 1 Tag (NFC Forum tag types definition) T2T Type 2 Tag (NFC Forum tag types definition) T3T Type 3 Tag (NFC Forum tag types definition) T4T Type 4 Tag (NFC Forum tag types definition) VEN V ENable pin (NFCC Hard reset control) All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 20 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 7. Legal information 7.1 Definitions Draft — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. third party customer(s). Customer is responsible for doing all necessary testing for the customer’s applications and products using NXP Semiconductors products in order to avoid a default of the applications and the products or of the application or use by customer’s third party customer(s). NXP does not accept any liability in this respect. Export control — This document as well as the item(s) described herein may be subject to export control regulations. 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Notwithstanding any damages that customer might incur for any reason whatsoever (including without limitation all damages referenced above and all direct or general damages) the entire liability of NXP Semiconductors its affiliates and their suppliers and customer’s exclusive remedy for all of the foregoing shall be limited to actual damages incurred by customer based on reasonable reliance up to the greater of the amount actually paid by customer for the product or five dollars (US$5.00). The foregoing limitations exclusions and disclaimers shall apply to the maximum extent permitted by applicable law even if any remedy fails of its essential purpose. 7.3 Licenses Purchase of NXP ICs with NFC technology Purchase of an NXP Semiconductors IC that complies with one of the Near Field Communication (NFC) standards ISO/IEC 18092 and ISO/IEC 21481 does not convey an implied license under any patent right infringed by implementation of any of those standards. Purchase of NXP Semiconductors IC does not include a license to any NXP patent (or other IP right) covering combinations of those products with other products, whether hardware or software. 7.4 Trademarks Notice: All referenced brands, product names, service names and trademarks are property of their respective owners. DESFire — is a trademark of NXP B.V. I²C-bus — is a trademark of NXP B.V. MIFARE — is a trademark of NXP B.V. SmartMX — is a trademark of NXP B.V. NXP Semiconductors does not accept any liability related to any default damage costs or problem which is based on any weakness or default in the customer’s applications or products or the application or use by customer’s AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 21 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 8. List of figures Fig 1. Fig 2. Fig 3. Fig 4. Fig 5. Fig 6. Fig 7. Fig 8. Fig 9. Fig 10. Fig 11. Fig 12. Fig 13. Fig 14. Fig 15. Fig 16. Fig 17. Fig 18. Fig 19. LPC824 LPCXpresso board .............................. 4 LPC11U37H LPCXpresso board....................... 6 LPC1227 LPCXpresso board ............................ 7 LPC1114 LPCXpresso board ............................ 8 LPCXpresso IDE workplace ............................ 10 Importing project in LPCXpresso IDE ............. 11 Building project in LPCXpresso IDE................ 11 Building project in LPCXpresso IDE................ 12 LPCXpresso console window starting project execution......................................................... 12 LPCXpresso console window when NDEF tag is read ................................................................. 13 LPCXpresso console window when NDEF tag is read ................................................................. 13 LPCXpresso console window when exchanging data with Android NFC phone ......................... 14 Android phone receiving NDEF message from NXP-NCI example project ............................... 14 LPCXpresso console window when exchanging data with Android NFC phone ......................... 15 Example SW architecture overview ................ 16 I2C address setting ......................................... 18 PIOs assignment............................................. 18 Discovery configuration variable ..................... 18 LPCXpresso project properties ....................... 19 AN11658 Application note COMPANY PUBLIC All information provided in this document is subject to legal disclaimers. Rev. 1.3 — 25 May 2016 323113 © NXP B.V. 2016. All rights reserved. 22 of 23 AN11658 NXP Semiconductors NXP-NCI LPCXpresso example 9. Contents 1. 2. 2.1 2.2 2.3 2.4 3. 4. 4.1 4.2 4.3 5. 5.1 5.2 5.3 5.4 5.4.1 5.4.2 5.4.3 5.4.4 6. 7. 7.1 7.2 7.3 7.4 8. 9. Introduction ......................................................... 3 HW setup .............................................................. 4 LPC82x .............................................................. 4 LPC11Uxx .......................................................... 6 LPC122x ............................................................ 7 LPC11xx............................................................. 8 SW setup ............................................................ 10 Demo .................................................................. 13 R/W mode ........................................................ 13 P2P mode ........................................................ 14 Card Emulation mode ...................................... 15 SW description .................................................. 16 Architecture overview ....................................... 16 Stack size ......................................................... 17 Porting recommendation for other MCUs ......... 17 Example customization .................................... 17 I2C address ...................................................... 17 PIOs assignment .............................................. 18 Discovery configuration .................................... 18 Modes compile flags ........................................ 18 Abbreviations .................................................... 20 Legal information .............................................. 21 Definitions ........................................................ 21 Disclaimers....................................................... 21 Licenses ........................................................... 21 Trademarks ...................................................... 21 List of figures..................................................... 22 Contents ............................................................. 23 Please be aware that important notices concerning this document and the product(s) described herein, have been included in the section 'Legal information'. © NXP B.V. 2016. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: [email protected] Date of release: 25 May 2016 323113 Document identifier: AN11658