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NFC NTAG NT3H1101 pass-through SRAM issues

Question asked by Martin Birkebaek on Sep 26, 2017
Latest reply on Aug 26, 2018 by 伟 高

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.