Hello,
Im currently using the Adafruit PN532 NFC-Shield, from which I want to supply an NTAG I2C Antenna with power.
With the Vout of the NTAG I2C I want to power an MCU.
I want to generate an RF-Field to get 3,3V to the Vout Pin of the NTAG I2C to run my MCU.
I do not exactly how to get an RF-Field without sending Messages with the PN532.
I think I have to set the Tx2RFEn and TX1RFEn Bits of the CIU_TxControl Register (0x6304).
When I write an 0x83 into the Register 0x6304 then there is an RF-Field for a few Milliseconds.
If I read the Register 0x6304 after I have set the two Bits, then there is still the value "0x80" in the Register.
Thanks,
timk
Hi,
Have you verified that Tx2RFEn and Tx1RFEn are not being overwritten in another part of the code before reading CIU_TxControl register?
Regards,
Ivan.