NXP AN14608 Based NFC Controllers User Guide

User Guide for NXP models including: PN7160, PN7220, AN14608 Based NFC Controllers, AN14608, Based NFC Controllers, NFC Controllers

PN7160/PN7220 – Android 15 porting guide

AN14608

PN7160, PN7220, NCI, EMVCo, NFC Forum, Android, NFC

NXP B.V.

PN7160/PN7220 – Android 15 porting guide

PN7160 | NFC Controller with Integrated Firmware and NCI Interface | NXP Semiconductors

14 Apr 2025 — This guide provides detailed instructions on how to integrate NXP NCI-based NFC controllers, PN7160 and PN7220, into an Android environment.

14 апр. 2025 г. — This guide provides detailed instructions on how to integrate NXP NCI-based NFC controllers, PN7160 and PN7220, into an Android environment.

File Info : application/pdf, 29 Pages, 731.65KB

AN14608

AN14608
PN7160/PN7220 Android 15 porting guide
Rev. 1.0 -- 14 April 2025

Application note

Document information

Information

Content

Keywords

PN7160, PN7220, NCI, EMVCo, NFC Forum, Android, NFC

Abstract

This document describes how to port PN7160/PN7220 common middleware release to Android 15.

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

1 Introduction
This guide provides detailed instructions on how to integrate NXP NCI-based NFC controllers, PN7160 and PN7220, into an Android environment. The process involves installing the necessary kernel driver and configuration of MW (see ref.[1]). For further information, refer to the product page for PN7160 ref.[2] and PN7220 ref.[3].
The Android Open Source Project (AOSP) has been updated to incorporate support for both PN7160 and PN7220 NFC controllers.
The PN7220 comes in two configurations: single-host and dual-host. The stack is generally the same for both. In dual-host mode, SMCU is added that means that all EMVCo related tasks are executed on SMCU. In singlehost EMVCo is executed in a dedicated EMVCo MW stack.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

2 Important notice

There are multiple tags related to Android 15 released on GitHub (ref.[1]). The table below explains each version:

Table 1.GitHub tags explanation Tag NFC_AR_INFRA_001E_15.01.00_OpnSrc NFC_AR_INFRA_0006_15.01.01_OpnSrc

Explanation
Initial release. Limited testing completed.
Release for PN7160 (full testing performed). PN7220 code is still there but with very limited testing completed.

Note: NXP is extending the test coverage which is why some tags have limited test coverage at the moment.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

3 Android MW stack
Figure 1 illustrates the architecture of the PN7220 Android NFC stack.

Figure 1.PN7220 Android NFC stack
· The NXP I2C Driver is a kernel module that allows access to the hardware resources of PN7220. · The HAL module is an implementation of the NXP NFC controller-specific hardware abstraction layer. · LibNfc-Nci is a native library that provides NFC functionality. · NFC JNI acts as a bridge between Java and Native classes. · The NFC and EMVCo Framework is a module of the application framework that allows access to NFC and
EMVCo functionalities.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

Figure 2 shows the architecture of the PN7160 Android NFC stack.

Figure 2.PN7160 Android MW stack
· The NXP I2C Driver is a kernel module that allows access to the hardware resources of PN7160. · The HAL module is an implementation of the NXP NFC controller-specific hardware abstraction layer. · LibNfc-nci is a native library that provides NFC functionality. · NFC JNI acts as a bridge between Java and Native classes. · The NFC is a module of the application framework that allows access to NFC functionalities. · The MW source code is the same for PN7160 and PN7220, but there are a few limitations.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

Table 2 shows unsupported features of each NFC controller.

Table 2.Unsupported features NFC controller PN7160
PN7220

Unsupported features
· EMVCo MW stack · SMCU · CT feature
· NFCEE_NDEF

Note: From Android 14 onwards P2P, is also not supported on PN7160.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

4 Kernel driver
To establish connection with the PN7220 or PN7160, the Android stack uses the nxpnfc kernel driver. It can be found in ref.[4].
4.1 Driver details
PN7220 supports I2C physical interface, while PN7160 supports I2C or SPI physical interface. When installed into the kernel, the driver is exposed via the device node in /dev/nxpnfc. Note: PN7160 and PN7220 use two different drivers, selection of the correct driver is required based on the chip type.
4.2 Getting the PN7160 driver source code
Copy the nfcandroid_platform_drivers/drivers/pn7160/nfc driver repository into the kernel directory, replacing the existing implementation. Refer to ref.[4] for the kernel files.
$rm -rf drivers/nfc $git clone "https://github.com/nxp-nfc-infra/nfcandroid_platform_drivers.git" -b
br_ar_15_comm_infra_dev
This ends up with the folder drivers/nfc containing the following files: · README.md: repository information · Makefile: driver heading makefile · Kconfig: driver configuration file · License: driver licensing terms · nfc subfolder containing:
commoc.c: generic driver implementation common.h: generic driver interface definition i2c_drv.c: i2c specific driver implementation i2c_drv.h: i2c specific driver interface definition spi_drv.c: spi specific driver implementation spi_drv.h: spi specific driver interface definition Makefile: makefile that is included in the makefile of the driver Kbuild => build file Kconfig => driver configuration file

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

4.3 Getting the PN7220 driver source code
Copy the nfcandroid_platform_drivers/drivers/pn7220cs/nfc (single-host use case) or nfcandroid_platform_ drivers/drivers/pn7220cms/nfc (dual-host use case) into the kernel directory drivers/nfc, replacing the existing driver. Refer to ref.[4] for the kernel files.
$rm -rf drivers/nfc $git clone "https://github.com/nxp-nfc-infra/nfcandroid_platform_drivers.git" -b
br_ar_15_comm_infra_dev
Following this command, the folder drivers/nfc contains the following files: · README.md: repository information · Makefile: driver heading makefile · Kconfig: driver configuration file · License: driver licensing terms · nfc subfolder containing:
commoc.c: generic driver implementation common.h: generic driver interface definition i2c_drv.c: i2c specific driver implementation i2c_drv.h: i2c specific driver interface definition Makefile: makefile that is included in the makefile of the driver Kbuild => build file Kconfig => driver configuration file
4.4 Building the driver
The devicetree is responsible for adding the driver to the kernel and loading it on device boot.
After upgrading the devicetree specification, the platform-related devicetree must be rebuilt. NXP recommends using kernel version 5.10 as it provides comprehensive validation.
To build the driver, the following steps must be performed:
1. Get the kernel driver 2. Get the source code for the driver 3. Modify the devicetree definition, which is unique to the device in use. 4. Build the driver:
a. Through the menuconfig procedure, add the target driver into the build.
After rebuilding the completed kernel, the driver will be included in the kernel image. All new kernel images must be copied into the AOSP build.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

5 AOSP adaptation

NXP adds modifications to the AOSP code. This means that the AOSP code is used as a foundation, but extended for NXP-specific features. ref.[5] is the current AOSP tag used by NXP. After obtaining the AOSP build, the existing AOSP code must be replaced, and a number of patches must be applied.
Note: A different version of the AOSP code can be used, but additional modifications must be performed.

5.1 AOSP build
1. Get AOSP source code.
$ repo init -u https://android.googlesource.com/platform/manifest -b android-15.0.0_r1 (check Section 2 for code releases)
$ repo sync
Note: The repo tool must be installed on the system. Refer to ref.[6] for instructions. 2. Build source code.
$cd Android_AROOT $source build/envsetup.sh $lunch select_target #target is DH we want to use for example: evk_8mn-userdebug $make -j

3. Copy all NXP repositories into the target location.

Table 3.Branch for specific Android version Android version
Android 15

Branch br_ar_15_comm_infra_dev

Note: While cloning, it is important to select the correct branch.

Table 4.Clone repositories AOSP Repos

NXP GitHub Repos

"$ANDROID_ROOT"/packages/ https://github.com/nxp-nfc-infra/nxp_nci_hal_nfc/tree/br_ar_15_comm_infra_dev apps/Nfc

"$ANDROID_ROOT"/system/nfc >https://github.com/nxp-nfc-infra/nxp_nci_hal_libnfc-nci/tree/br_ar_15_comm_infra_dev

"$ANDROID_ROOT"/hardware/ https://github.com/nxp-nfc-infra/nfcandroid_nfc_hidlimpl/tree/br_ar_15_comm_infra_dev nxp/nfc

"$ANDROID_ROOT"/vendor/nxp/ https://github.com/nxp-nfc-infra/nfcandroid_frameworks/tree/br_ar_15_comm_infra_dev frameworks

"$ANDROID_ROOT"/hardware/ https://github.com/nxp-nfc-infra/nfcandroid_emvco_aidlimpl/tree/

nxp/emvco

br_ar_15_comm_infra_dev

"$ANDROID_ROOT"

https://github.com/nxp-nfc-infra/nfcandroid_platform_reference/tree/ br_ar_15_comm_infra_dev

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

Table 5.Clone repositories for test applications and TDA support

Folder in GitHub

AOSP Repos

NXP GitHub

IC Supported

test_apps/SMCU_Switch

"$ANDROID_ROOT"/ packages/apps/

https://github.com/ nxp-nfc-infra/ nfcandroid_infra_test_apps

PN7220

test_apps/EMVCoMode SwitchApp

"$ANDROID_ROOT"/ packages/apps/Nfc/

https://github.com/ nxp-nfc-infra/ nfcandroid_infra_test_apps

PN7220

test_apps/Cockpit

Not applicable anymore. Use Not applicable anymore. Use Not applicable anymore. Use

Cockpit tool from Quick start Cockpit tool from Quick start Cockpit tool from Quick start

guide

test_apps/SelfTest

"$ANDROID_ROOT"/ hardware/nxp/nfc/

https://github.com/ nxp-nfc-infra/ nfcandroid_infra_test_apps

PN7220

test_apps/SelfTest_pn7160 "$ANDROID_ROOT"/ hardware/nxp/nfc/

https://github.com/ nxp-nfc-infra/ nfcandroid_infra_test_apps

PN7160

test_apps/load_unload

"$ANDROID_ROOT"/ hardware/nxp/nfc/

https://github.com/ nxp-nfc-infra/ nfcandroid_infra_test_apps

PN7220

test_apps/SelfTestAidl

"$ANDROID_ROOT"/ hardware/nxp/nfc/

https://github.com/ nxp-nfc-infra/ nfcandroid_infra_test_apps

PN7220

nfc_tda

"$ANDROID_ROOT"/system/ https://github.com/

PN7220

nxp-nfc-infra/

nfcandroid_infra_comm_libs

emvco_tda

"$ANDROID_ROOT"/ hardware/nxp/emvco/

https://github.com/

PN7220

nxp-nfc-infra/

nfcandroid_infra_comm_libs

emvco_tda_test

"$ANDROID_ROOT"/ hardware/nxp/emvco/

https://github.com/

PN7220

nxp-nfc-infra/

nfcandroid_infra_comm_libs

NfcTdaTestApp

"$ANDROID_ROOT"/ packages/apps/Nfc/

https://github.com/

PN7220

nxp-nfc-infra/

nfcandroid_infra_comm_libs

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

4. Apply patches.

Table 6.Apply patches

Location to apply

Patch to apply

Location of the patch

"$ANDROID_ROOT"/build/ AROOT_build_bazel.

bazel/

patch

https://github.com/nxp-nfc-infra/nfcandroid_platform_reference/ tree/br_ar_15_comm_infra_dev/build_cfg/build_pf_patches/

"$ANDROID_ROOT"/build/ AROOT_build_make.

release/

patch

https://github.com/nxp-nfc-infra/nfcandroid_platform_reference/ tree/br_ar_15_comm_infra_dev/build_cfg/build_pf_patches/

"$ANDROID_ROOT"/ external/libchrome/

AROOT_build_soong. patch

https://github.com/nxp-nfc-infra/nfcandroid_platform_reference/ tree/br_ar_15_comm_infra_dev/build_cfg/build_pf_patches/

"$ANDROID_ROOT"/ frameworks/base/

AROOT_frameworks_ base.patch

https://github.com/nxp-nfc-infra/nfcandroid_platform_reference/ tree/br_ar_15_comm_infra_dev/build_cfg/build_pf_patches/

"$ANDROID_ROOT"/ system/logging/

AROOT_system_logging. https://github.com/nxp-nfc-infra/nfcandroid_platform_reference/

patch

tree/br_ar_15_comm_infra_dev/build_cfg/build_pf_patches/

Note: Check the output after applying the patch, if any issue was observed during the patching. 5. Add FW libraries. Refer to ref.[8] for FW. Note: Not mandatory. FW can always be updated. For PN7160:

$git clone https://github.com/NXP/nfc-NXPNFCC_FW.git $cp -r nfc-NXPNFCC_FW/InfraFW/pn7220/64-bit/libpn7160_fw.so AROOT/vendor/ nxp/7160/firmware/lib64/libpn7160_fw.so $cp -r nfc-NXPNFCC_FW/InfraFW/pn7220/32-bit/libpn7160_fw.so AROOT/vendor/ nxp/7160/firmware/lib/libpn7160_fw.so

For PN7220:

$git clone https://github.com/NXP/nfc-NXPNFCC_FW.git $cp -r nfc-NXPNFCC_FW/InfraFW/pn7220/64-bit/libpn7220_64bit.so AROOT/vendor/nxp/ pn7220/firmware/lib64/libpn72xx_fw.so

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

6. Adding NFC to the build In the device.mk makefile (for example, device/brand/platform/device.mk), include specific makefiles:
$(call inherit-product, vendor/nxp/nfc/device-nfc.mk)
In the BoardConfig.mk makefile (for example, device/brand/platform/BoardConfig.mk), include a specific makefile:
-include vendor/nxp/nfc/BoardConfigNfc.mk
7. Adding the DTA application
$git clone https://github.com/NXPNFCProject/NXPAndroidDTA.git $cd NXPAndroidDTA $git checkout br_ar_new_dta_arch $cp -r NXPAndroidDTA /vendor/nxp/ #User can clone it into vendor/nxp/ NXPAndroidDTA directly $<AROOT>/vendor/nxp/NXPAndroidDTA$ mm -j
8. Build AOSP with changes:
$cd framework/base $mm $cd ../.. $cd vendor/nxp/frameworks $mm #after this one, com.nxp.emvco.jar and com.nxp.nfc.jar should be inside out/ target/product/xxxx/system/framwework/ $cd ../../.. $cd hardware/nxp/nfc $mm $cd ../../.. $make -j
Now, flash the device with new Android images.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

5.2 Android NFC applications and libraries on the target devices

After the build, the created libraries must be installed on the target device. Android NFC applications and libraries on the target devices specifies the project location, the corresponding library, and the target device location where to be installed.
Note: EMVCo binaries are only applicable for PN7220.

Table 7.Compiled files with device target

Project location

Compiled Files

"$ANDROID_ROOT"/ packages/apps/Nfc

NfcNci.odex NfcNci.vdex lib/NfcNci.apk oat/libnfc_nci_jni.so

"$ANDROID_ROOT"/ system/nfc "$ANDROID_ROOT"/ system/nfc_tda" "$ANDROID_ROOT"/ hardware/nxp/nfc
"$ANDROID_ROOT/ hardware/interfaces/nfc"
"$ANDROID_ROOT"/ vendor/nxp/frameworks "$ANDROID_ROOT"/ hardware/nxp/emvco
"$ANDROID_ROOT/ hardware/nxp/emvco_tda"

libnfc_nci.so
nfc_tda.so
nfc_nci_nxp_pn72xx.so android.hardware.nfc-service.nxp nfc-service-nxp.rc android.hardware.nfc@1.0.so android.hardware.nfc@1.1.so android.hardware.nfc@1.2.so vendor.nxp.nxpnfc_aidl-V2-ndk.so vendor.nxp.nxpnfc_aidl-V1-ndk.so
android.hardware.nfc-V1-ndk.so android.hardware.nfc@1.0.so android.hardware.nfc@1.1.so android.hardware.nfc@1.2.so android.hardware.nfc@1.0.so android.hardware.nfc@1.1.so android.hardware.nfc@1.2.so
com.nxp.emvco.jar (PN7220) com.nxp.nfc.jar
emvco_poller.so (PN7220) vendor.nxp.emvco-V1-ndk.so vendor.nxp.emvco-V2-ndk.so vendor.nxp.emvco-V2-ndk.so vendor.nxp.emvco-service vendor.nxp.emvco-service.rc
emvco_tda.so

Comments

Location in target device
/system/app/NfcNci/ oat/arm64/ /system/app/NfcNci/ oat/arm64/ /system/app/NfcNci/ /system/lib64/
/system/lib64/

Applicable only for CT /system/lib64/ feature.
/vendor/lib64 /vendor/bin/hw/ /vendor/bin/init /system/lib64/ /system/lib64/ /system/lib64/ /vendor/lib64/ /vendor/lib64/
/system\/ib64/ /system/lib64/ /system/lib64/ /system/lib64/ /vendor/lib64/ /vendor/lib64/ /vendor/lib64/
/system/framework /system/framework
/vendor/lib64/ /system/lib64/ /system/lib64/ /vendor/lib64/ /vendor/bin/hw/ /vendor/etc/init/
Applicable only for CT /vendor/lib64/ feature.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

5.3 Block mapping

Mapping the block name from Section 1 to target location in AOSP code.

Table 8.Patch location in NFC Stack Block name NFC HAL and EMVCo HAL NFC Stack EMVCo L1 Data Exchange Layer = EMVCo Stack LibNfc-Nci NFC JNI NFC Service NFC Framework EMVCo Framework

Location in AOSP code hardware/interfaces/ hardware/nxp/nfc/ hardware/nxp/emvco/ system/nfc/ packages/apps/nfc/ packages/apps/nfc/ frameworks/base/ vendor/nxp/frameworks/

5.4 EMVCo API
PN7220 MW stack extends AOSP code with EMVCo MW stack. This section describes the EMVCo APIs.
Note: APIs can be called only when using PN7220 IC. If calling it with PN7160 IC, the API does not work.
EMVCo Profile Discovery. Those APIs can be used with contact and contactless profiles.
· registerEMVCoEventListener() ndk::ScopedAStatus registerEMVCoEventListener ( const std::shared_ptr< INxpEmvcoClientCallback > & in_clientCallback, bool * in_aidl_return )
Description: Register EMVCo callback function to receive the events from a listener device Note: This function is must to ball before invoking any other api. Parameters:
[in] *in_clientCallback: has EMVCo client HAL callback [in] *in_aidl_return: indicates register status in return to caller Returns boolean returns true, if success and returns false, if failed to register · getCurrentDiscoveryMode() ndk::ScopedAStatus
getCurrentDiscoveryMode(::aidl::vendor::nxp::emvco::NxpDiscoveryMode * _aidl_return)
Description: returns the current active profile type. Returns
NxpDiscoveryMode - NFC/EMVCo/Unknown

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

· onNfcStateChange() ndk::ScopedAStatus onNfcStateChange(NxpNfcState in_nfcState)
Description: updated NFC state to EMVCo HAL. Parameters:
[in] in_nfcState: specifies the NFC state Returns:
void · registerNFCStateChangeCallback()
ndk::ScopedAStatus registerNFCStateChangeCallback ( const std::shared_ptr< ::aidl::vendor::nxp::emvco::INxpNfcStateChangeRequestCallback > & in_nfcStateChangeRequestCallback,
bool * _aidl_return )
Description: Register an NFC callback function to receive the events from a listener device. Note: This function is must call before invoking any other api. Parameters:
[in] in_nfcStateChangeCallback: INxpNfcStateChangeRequestCallback the event callback function to be passed by the caller. It should implement to turn ON/OFF NFC based on the request received.
Returns: boolean returns true, if success and returns false, if failed to register. · setByteConfig()
ndk::ScopedAStatus setByteConfig ( ::aidl::vendor::nxp::emvco::NxpConfigType in_type, int32_t in_length, int8_t in_value, ::aidl::vendor::nxp::emvco::NxpEmvcoStatus * _aidl_return
)
· setEMVCoMode()
ndk::ScopedAStatus setEMVCoMode ( int8_t in_disc_mask, bool in_isStartEMVCo
)
Description: Starts the EMVCo mode with the Device-Controller. Once the Application Data Channel is established, the Application may send start the EMVCo mode with the Device-Controller.
Parameters: [in] in_disc_mask EMVCo: polling technologies are configured through this parameter [in]in_isStartEMVCo: specifies to start or stop the EMVCo mode
Returns: void
· setLed()
ndk::ScopedAStatus setLed ( ::aidl::vendor::nxp::emvco::NxpLedControl in_ledControl, ::aidl::vendor::nxp::emvco::NxpEmvcoStatus * emvco_status
)

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

For Contact EMVCo, the following APIs can be used on top of the previous ones.
· closeTDA()
ndk::ScopedAStatus closeTDA ( int8_t in_tdaID, bool in_standBy )
Description: Closes the smart card connected over TDA Parameters:
[in] tdaID: id of the tda slot to be closed Exceptions:
EMVCO_STATUS_INVALID_PARAMETER, if provided tdaID is in-valid EMVCO_STATUS_FEATURE_NOT_SUPPORTED when the contact card feature is not supported. Returns: void
· discoverTDA()
ndk::ScopedAStatus discoverTDA ( std::vector<::aidl::vendor::nxp::emvco::NxpEmvcoTDAInfo > * emvcoTDAInfo )
Description: discoverTDA provides all the details of smart card connected over TDA Parameters:
[in]*in_clientCallback: provides EMVCo state and TDA state as callback Exceptions:
EMVCO_STATUS_FEATURE_NOT_SUPPORTED when the contact card feature is not supported. Returns:
NxpEmvcoTDAInfo[] returns all the smart card connected over TDA. valid emvcoTDAInfo is received only when the status is EMVCO_STATUS_OK
· openTDA()
ndk::ScopedAStatus openTDA ( int8_t in_tdaID, bool in_standBy, int8_t * out_connID )
Description: opens the smart card connected over TDA Parameters:
[in]tdaID: tda id of the smart card received through discoverTDA Exceptions:
EMVCO_STATUS_INVALID_PARAMETER, if provided tdaID is in-valid EMVCO_STATUS_FEATURE_NOT_SUPPORTED when the contact card feature is not supported. Returns: byte returns the connection id of the smart card. valid connection id received only when status is
EMVCO_STATUS_OK

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

· registerEMVCoCTListener()
ndk::ScopedAStatus registerEMVCoCTListener ( const std::shared_ptr<::aidl::vendor::nxp::emvco::INxpEmvcoTDACallback > & in_in_clientCallback,
bool * _aidl_return )
Description: registers the EMVCoCT callback to the EMVCo stack Parameters:
[in]*in_in_clientCallback: provides EMVCo state and TDA state as callback Returns:
void
· transceive()
ndk::ScopedAStatus transceive ( const std::vector< uint8_t > & in_cmd_data, std::vector< uint8_t > * out_rsp_data )
Description: sends application data with the Device-Controller and receives response data from the controller
Note: connection id of the TDA should be added as part of the NCI header. Parameters:
[in]in_cmd_data: Application command data buffer Exceptions:
EMVCO_STATUS_INVALID_PARAMETER, if provided connection id is in-valid EMVCO_STATUS_FEATURE_NOT_SUPPORTED when the contact card feature is not supported. Returns: Response APDU received from controller. valid Response APDU received only when status is
EMVCO_STATUS_OK
For EMVCo contactless, the following APIs can be called:
· registerEMVCoEventListener()
ndk::ScopedAStatus registerEMVCoEventListener ( const std::shared_ptr< INxpEmvcoClientCallback > & in_clientCallback,
bool * _aidl_return )
Description: Register an EMVCo callback function to receive the events from a listener device. Note: This function is must call before invoking any other api. Parameters:
[in]*in_clientCallback: has EMVCo client HAL callback [in]*in_aidl_return: indicates register status in return to caller Returns: boolean returns true, if success and returns false, if failed to register

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

· setEMVCoMode()
ndk::ScopedAStatus setEMVCoMode ( int8_t in_config, bool in_isStartEMVCo )
Description: Starts the EMVCo mode with the Device-Controller. Once the Application Data Channel is established, the Application may send start the EMVCo mode with the Device-Controller.
Parameters: [in]in_config: EMVCo polling technologies are configured through this parameter [in]in_isStartEMVCo: specifies to start or stop the EMVCo mode
Returns: void
· stopRFDisovery()
ndk::ScopedAStatus stopRFDisovery ( ::aidl::vendor::nxp::emvco::NxpDeactivationType in_deactivationType,
::aidl::vendor::nxp::emvco::NxpEmvcoStatus * emvco_status )
Description: stops the RF field and moves in to the specified deactivation state. Parameters:
[in]in_deactivationType: specifies the state to be in after RF deactivation Returns:
NxpEmvcoStatus returns EMVCO_STATUS_OK if command processed successfully and returns EMVCO_STATUS_FAILED, if command is not processed due to in-valid state. EMVCo mode should be ON to call this API
· transceive()
ndk::ScopedAStatus transceive ( const std::vector< uint8_t > & in_data, int32_t * _aidl_return )
Description: send application data with the Device-Controller. Note: In case if send data is failed, the Application shall again invoke open() before invoking this API. Parameters:
[in]in_data: Application data buffer Returns:
NxpEmvcoStatus indicating execution status

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

5.5 Configuration files PN7160

For PN7160, there are two different configuration files. 1. libnfc-nci.conf 2. libnfc-nxp.conf
Note: Configuration files provided by NXP are examples related to the NFC controller demo board. These files must be adopted according to the targeted integration.
Configuration files must be placed in the target location (see Table 9).

Table 9.Locations of configuration files Name of configuration file libnfc-nci.conf libnfc-nxp.conf

Location in device system/etc vendor/etc

To get more informations on the configuration files, see ref.[9].

5.6 Configuration files PN7220

For PN7220, there are five different configuration files.
1. libemvco-nxp.conf 2. libnfc-nci.conf 3. libnfc-nxp.conf 4. libnfc-nxp-eeprom.conf 5. libnfc-nxp-rfExt.conf
Note: Configuration files provided by NXP are examples related to the NFC controller demo board. These files must be adopted according to the targeted integration.
Configuration files need to be placed in the target location (see Table 10).

Table 10.Locations of configuration files Name of configuration file libemvco-nxp.conf libnfc-nci.conf libnfc-nxp.conf libnfc-nxp-eeprom.conf libnfc-nxprfExt.conf

Location in device vendor/etc system/etc vendor/etc vendor/etc vendor/etc

To get more informations on the configuration files, see ref.[9].

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

5.7 DTA application
To allow NFC Forum certification testing, a device test application is provided. It is composed of several components in the different Android layers, which must be built and included in the Android image. To push the DTA application, the following steps must be executed: 1. Copy DTA apk to one location:
$cp -rf "out/target/product/evk_8mm/vendor/app/NXPDTA/NXPDATA.apk" /DTAPN7220
2. Install the apk: adb install NXPDTA.apk
After flashing the target, the DTA application should then be present in the list of installed applications. Refer to ref.[7] for a detailed description of how to use the application.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

6 Abbreviations

Table 11.Abbreviations

Acronym

Description

APDU

application protocol data unit

AOSP

Android Open Source Project

device host

HAL

hardware abstraction layer

firmware

I2C

Inter-Integrated Circuit

LPCD

lower powered card detection

NCI

NFC controller interface

NFC

near-field communication

middleware

PLL

phase-locked loop

P2P

peer to peer

radio frequency

SDA

serial data

SMCU

secure microcontroller

software

AN14608
PN7160/PN7220 Android 15 porting guide

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

7 References
[1] GitHub repository PN7160 and PN7220 Common MW (link) [2] Web page PN7160 NFC Plug and Play Controller with Integrated Firmware and NCI Interface (link) [3] Web page PN7220 EMV L1 Compliant NFC Controller with NCI Interface Supporting EMV and NFC
Forum Applications (link) [4] GitHub repository PN7160 and PN7220 kernel driver (link) [5] Resources AOSP r2 tag (link) [6] Resources Source control tools (link) [7] User guide UG10068 PN7220 Quick start guide (link) [8] GitHub repository PN7160 and PN7220 FW location (link) [9] Application note AN14431 PN7160/PN7220 configuration files (link)

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

8 Note about the source code in the document
Example code shown in this document has the following copyright and BSD-3-Clause license:
Copyright 2025 NXP Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials must be provided with the distribution.
3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

9 Revision history

Table 12.Revision history Document ID
AN14608 v.1.0

Release date 14 April 2025

AN14608
PN7160/PN7220 Android 15 porting guide
Description · Initial version

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

Legal information
Definitions
Draft -- A draft status on a document indicates that 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 in a draft version of a document and shall have no liability for the consequences of use of such information.
Disclaimers
Limited warranty and liability -- Information in this document is believed to be accurate and reliable. However, NXP Semiconductors does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information. NXP Semiconductors takes no responsibility for the content in this document if provided by an information source outside of NXP Semiconductors. In no event shall NXP Semiconductors be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, NXP Semiconductors' aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of NXP Semiconductors.
Right to make changes -- NXP Semiconductors reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof.
Suitability for use -- NXP Semiconductors products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury, death or severe property or environmental damage. NXP Semiconductors and its suppliers accept no liability for inclusion and/or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and/or use is at the customer's own risk.
Applications -- Applications that are described herein for any of these products are for illustrative purposes only. NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Customers are responsible for the design and operation of their applications and products using NXP Semiconductors products, and NXP Semiconductors accepts no liability for any assistance with applications or customer product design. It is customer's sole responsibility to determine whether the NXP Semiconductors product is suitable and fit for the customer's applications and products planned, as well as for the planned application and use of customer's third party customer(s). Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. 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 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.

Terms and conditions of commercial sale -- NXP Semiconductors products are sold subject to the general terms and conditions of commercial sale, as published at https://www.nxp.com/profile/terms, unless otherwise agreed in a valid written individual agreement. In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. NXP Semiconductors hereby expressly objects to applying the customer's general terms and conditions with regard to the purchase of NXP Semiconductors products by customer.
Export control -- This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities.
Suitability for use in non-automotive qualified products -- Unless this document expressly states that this specific NXP Semiconductors product is automotive qualified, the product is not suitable for automotive use. It is neither qualified nor tested in accordance with automotive testing or application requirements. NXP Semiconductors accepts no liability for inclusion and/or use of non-automotive qualified products in automotive equipment or applications. In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall use the product without NXP Semiconductors' warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the product for automotive applications beyond NXP Semiconductors' specifications such use shall be solely at customer's own risk, and (c) customer fully indemnifies NXP Semiconductors for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NXP Semiconductors' standard warranty and NXP Semiconductors' product specifications.
HTML publications -- An HTML version, if available, of this document is provided as a courtesy. Definitive information is contained in the applicable document in PDF format. If there is a discrepancy between the HTML document and the PDF document, the PDF document has priority.
Translations -- A non-English (translated) version of a document, including the legal information in that document, is for reference only. The English version shall prevail in case of any discrepancy between the translated and English versions.
Security -- Customer understands that all NXP products may be subject to unidentified vulnerabilities or may support established security standards or specifications with known limitations. Customer is responsible for the design and operation of its applications and products throughout their lifecycles to reduce the effect of these vulnerabilities on customer's applications and products. Customer's responsibility also extends to other open and/or proprietary technologies supported by NXP products for use in customer's applications. NXP accepts no liability for any vulnerability. Customer should regularly check security updates from NXP and follow up appropriately. Customer shall select products with security features that best meet rules, regulations, and standards of the intended application and make the ultimate design decisions regarding its products and is solely responsible for compliance with all legal, regulatory, and security related requirements concerning its products, regardless of any information or support that may be provided by NXP. NXP has a Product Security Incident Response Team (PSIRT) (reachable at PSIRT@nxp.com) that manages the investigation, reporting, and solution release to security vulnerabilities of NXP products.
NXP B.V. -- NXP B.V. is not an operating company and it does not distribute or sell products.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

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.

Trademarks
Notice: All referenced brands, product names, service names, and trademarks are the property of their respective owners. NXP -- wordmark and logo are trademarks of NXP B.V. I2C-bus -- logo is a trademark of NXP B.V.

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

Tables

Tab. 1. Tab. 2. Tab. 3. Tab. 4. Tab. 5.
Tab. 6.

GitHub tags explanation ....................................3 Unsupported features ........................................6 Branch for specific Android version ...................9 Clone repositories ............................................. 9 Clone repositories for test applications and TDA support .................................................... 10 Apply patches ..................................................11

Tab. 7. Tab. 8. Tab. 9. Tab. 10. Tab. 11. Tab. 12.

Compiled files with device target .....................13 Patch location in NFC Stack ........................... 14 Locations of configuration files ........................19 Locations of configuration files ........................19 Abbreviations ...................................................21 Revision history ...............................................24

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

AN14608
PN7160/PN7220 Android 15 porting guide

Figures
Fig. 1. PN7220 Android NFC stack .............................. 4 Fig. 2. PN7160 Android MW stack ...............................5

AN14608
Application note

All information provided in this document is subject to legal disclaimers.
Rev. 1.0 -- 14 April 2025

NXP Semiconductors

Contents

Introduction ...................................................... 2

Important notice ...............................................3

Android MW stack ........................................... 4

Kernel driver .................................................... 7

4.1

Driver details ......................................................7

4.2

Getting the PN7160 driver source code .............7

4.3

Getting the PN7220 driver source code .............8

4.4

Building the driver ..............................................8

AOSP adaptation ............................................. 9

5.1

AOSP build ........................................................ 9

5.2

Android NFC applications and libraries on

the target devices ............................................ 13

5.3

Block mapping ................................................. 14

5.4

EMVCo API ..................................................... 14

5.5

Configuration files PN7160 .............................. 19

5.6

Configuration files PN7220 .............................. 19

5.7

DTA application ................................................20

Abbreviations ................................................. 21

References ......................................................22

Note about the source code in the

document ........................................................23

Revision history .............................................24

Legal information ...........................................25

AN14608
PN7160/PN7220 Android 15 porting guide

Please be aware that important notices concerning this document and the product(s) described herein, have been included in section 'Legal information'.

References

Apache FOP Version 2.8