NFC NTAG NT3H1101 pass-through SRAM issues

[martinbirkebaek]

I want to transfer data via NFC to a microcontroller via the pass-through interface. I have it working so that i am able to transmit data from a windows application to the microcontroller via NFC reader/writter. But when I try to respond from the microcontroller, my writes to SRAM fails. I can address the NFC chip via I2C, but as soon as i transmit the first byte, it gets nak'ed by the NFC chip and i do not understand why. NS REG reads 0x65.

[chengwei_gao112]

I meet the same problem with you,do you solve it now? I care for it very much ! My email is154824072@qq.com

[Kan_Li]

Hi Martin,

Was the tag VCC powered?

Have a great day,
Kan

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[sunxin]

I meet the same problem with you,do you solve it now? I care for it very much ! My email is 1015902665@qq.com

[martinbirkebaek]

Hi Kan,

Yes VCC is powered.

best regards,

Martin