Hello Community,
i have a custom PCB with PN7642.
The Datasheet says, that before turning on the RF part, an initial calibration needs to be done.
Is there any further documentation about this than:
1. Write EEPROM configuration NOV_CFG_CAL.
2. Write REGISTER TX_NOV_CALIBRATE_AND_STORE_VAL_REG.
3. Write EEPROM configuration NOV_CFG_CAL.?
Which values should be set?
Thank for helping.
Best regards
Oliver
Hello @MPEngineering
This part should be encapsulated, and recommends to run the project:
PN7642_MCUXpresso_SDK_02-15-003_PUB\boards\pnev7642fama\nfc_examples\pub\NFC_Config, and select "RFLD_NFCLD_CONFIG"
After that, the device can be initialized and calibrated.
Hey @KaiLi ,
thanks for replying.
Yes, i have the SDK. So with flashing an example its calibrated?
I looked for the definitions of the Registers in some examples and also in the API Reference Manual.
I don´t see them.
Maybe my question was a bit unclear.
I want to know, what i have to write into REGISTER TX_NOV_CALIBRATE_AND_STORE_VAL_REG.
Cause there is no further explanation. Its 2 bit r/w register. What happens if i write 0x1, 0x2 or 0x3 into it?
NOV_CONFIG_CAL is clear. First write 0x01 for cold boot FW calibration and after succesfull calibration write 0x02 to reference to NOV_CAL_VAL1 and 2.
Best regards
Oliver
Hello @MPEngineering
It's recommended that you can run SDK the example
log in:
Best-in-Class NFC Frontend with Integrated MCU | NXP Semiconductors
and download:
