NFC fixes and workarounds

Fixes for hardware-related anomalies. More...

Functions
static bool	type_52840_check (void)
	Internal auxiliary function to check if the program is running on NRF52840 chip. More...
static bool	type_52840_sample_check (void)
	Internal auxiliary function to check if the program is running on first sample of NRF52840 chip. More...
static bool	type_52840_final_check (void)
	Internal auxiliary function to check if the program is running on final version of NRF52840 chip. More...

Detailed Description

Fixes for hardware-related anomalies.

If you are using PCA10040 (part of nRF52 Development Kit), you must define the macro HAL_NFC_ENGINEERING_BC_FTPAN_WORKAROUND in order to apply workarounds for the following anomalies:

• 79. NFCT: A false EVENTS_FIELDDETECTED event occurs after the field is lost.
• 116. NFCT does not release HFCLK when switching from ACTIVATED to SENSE mode.

If you are using PCA10056 Engineering A (part of nRF52840 Development Kit), you must define the macro HAL_NFC_NRF52840_ENGINEERING_ABC_WORKAROUND in order to apply workarounds for the following anomalies:

• 98. NFCT: The NFCT is not able to communicate with the peer.
• 116. NFCT does not release HFCLK when switching from ACTIVATED to SENSE mode.
• 144. NFCT: Not optimal NFC performance

If you are using PCA10056 Engineering B or C (part of nRF52840 Development Kit), you must define the macro HAL_NFC_NRF52840_ENGINEERING_ABC_WORKAROUND in order to apply workarounds for the following anomalies:

• 190. NFCT: Event FIELDDETECTED may be generated too early.

The use of implemented workarounds for PCA10056 are determined at the runtime and depends on the chip variant.

The current code contains a patch for anomaly 25 (NFCT: Reset value of SENSRES register is incorrect), so that it now works on Windows Phone.

Function Documentation

static bool type_52840_check ( void  )

inlinestatic

Internal auxiliary function to check if the program is running on NRF52840 chip.

Return values

true	It is NRF52480 chip
false	It is other chip

static bool type_52840_final_check ( void  )

inlinestatic

Internal auxiliary function to check if the program is running on final version of NRF52840 chip.

Return values

true	It is NRF52480 chip and it is final version
false	It is other chip

static bool type_52840_sample_check ( void  )

inlinestatic

Internal auxiliary function to check if the program is running on first sample of NRF52840 chip.

Return values

true	It is NRF52480 chip and it is first sample version
false	It is other chip