Hello, In the ST25DV dynamic tag, RF passwords can only be changed from NFC interface, not from I2C interface.In the same way, the I2C password can only be changed from the I2C interface.There is no possibility to modify an RF password other than usi...
Hello, The values you have are not correct.GPO_EN bit is bit 0, both in GPO configuration Byte and in GPO_CTRL_Dyn register.In your setting, this bit is set to 0, so nothing will go out of the GPO pin.Most probably, you are using the wrong documentat...
Hello, Can you please provide the values you read in:- GPO1 (I2C system address 0000h, or RF read configuration @00h)- GPO2 (I2C system address 0000h, or RF read configuration @01h)- and GPO_CTRL_Dyn register (I2C user address 2000h or RF read dynami...
Hello, It is not completely clear to me:- Do you want to provide power to the display from the ST25DV? In this case the GPO output is not the correct output to use. VEH (energy harvesting output) should be used.- Or do you want to trigger the power o...
Hello, Normally, the resistance of the antenna doesn't influence the resonant frequency. The effect will be that the Q factor will be flattened, but resonant point should be the same.What is strange in your case is that despite a very flat S11 curve ...