NFC flow in ICS 4.0.3.

[Nishitha Adaranthe]

Even though NFC is found in packages, framework and external folders
of the android source, the link between NFC 's HAL and middleware is
missing.

We have referred a file called nfc_hw.c present in device/samsung
folder of the android source.

The device is getting listed in /dev folder as pn544 but when an
application is used to check if the device has NFC feature, the
returned result is false.

The NFC application includes

<uses-feature android:name="android.hardware.nfc"
android:required="false" />//(in AndroidManifest.xml)

hasSystemFeature(PackageManager.FEATURE_NFC) on PackageManager to see
if NFC is available on the current device.

The value returned is false.

So can anyone help as to how the gap between the NFC library (libnfc-
nxp) and HAL layer can be filled.

[Dragos Tatulea]

On Thursday, May 3, 2012 11:57:40 AM UTC+3, Nishitha Adaranthe wrote:

Even though NFC is found in packages, framework and external folders
of the android source, the link between NFC 's HAL and middleware is
missing.

We have referred a file called nfc_hw.c present in device/samsung
folder of the android source.

nfc_hw.c contains the eeprom_settings + path to dev used by NFC App to pass this information to the NFC Stack (libnfc-nxp) to flash them to NFC device. (see packages/apps/Nfc/jni/com_android_nfc_NativeNfcManager.cpp).

libnfc-nxp is actually an NFC stack + HAL (see libnfc-nxp/Linux_x86, which handles both i2c and uart drivers).

The device is getting listed in /dev folder as pn544 but when an
application is used to check if the device has NFC feature, the
returned result is false.

The NFC application includes

<uses-feature android:name="android.hardware.nfc"
android:required="false" />//(in AndroidManifest.xml)

hasSystemFeature(PackageManager.FEATURE_NFC) on PackageManager to see
if NFC is available on the current device.

The value returned is false.

So can anyone help as to how the gap between the NFC library (libnfc-
nxp) and HAL layer can be filled.

Do you actually have a NFC chip on your hw?

[Nishitha Adaranthe]

Thanks for the reply. I'll surely check this. Yes i do have NFC chip on the hardware.

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[Akash Ramani]

and is it a pn544 device (internal)?

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