https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/Write-Data/m-p/2073563#M135 <P>&nbsp;</P><DIV>I am currently working on writing the following URL to an NDEF file after authentication:<BR /><BR /><A title="https://choose.url.com/ntag424?e=00000000000000000000000000000000&amp;c=0000000000000000" href="https://choose.url.com/ntag424?e=00000000000000000000000000000000&amp;c=0000000000000000" target="_blank" rel="noopener">https://choose.url.com/ntag424?e=00000000000000000000000000000000&amp;c=0000000000000000</A></DIV><DIV>The write file access was set to 0. Here are the details:</DIV><UL><LI>TI: 9D00C4DF</LI><LI>CmdCtr: 0000</LI><LI>KSesAuthMAC: 4C6626F5E72EA694202139295C7A7FC7</LI><LI><DIV>KSesAuthENC: 1309C877509E5A215007FF0ED19CA564<BR /><BR /></DIV></LI></UL><DIV>I referred to the AN12196.pdf, specifically section 5.8.2 "Write NDEF File - using Cmd.WriteData, CommMode.FULL".(values above are according to the document) However, I am having difficulty understanding how the commands were calculated to the final form:</DIV><P>&nbsp;</P><DIV>908D00009F02000000800000421C73A27D827658AF481 FDFF20A5025B559D0E3AA21E58D347F343CFFC768BFE596 C706BC00F2176781D4B0242642A0FF5A42C461AAF894D9 A1284B8C76BCFA658ACD40555D362E08DB15CF421B51283 F9064BCBE20E96CAE545B407C9D651A3315B27373772E5 DA2367D2064AE054AF996C6F1F669170FA88CE8C4E3A4A7 BBBEF0FD971FF532C3A802AF745660F2B4D1D9A8499661EBF300&nbsp; &nbsp;</DIV><DIV>&nbsp;&nbsp;</DIV> Thu, 03 Apr 2025 09:10:40 GMT athul_pm 2025-04-03T09:10:40Z https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/Write-Data/m-p/2073563#M135 <P>&nbsp;</P><DIV>I am currently working on writing the following URL to an NDEF file after authentication:<BR /><BR /><A title="https://choose.url.com/ntag424?e=00000000000000000000000000000000&amp;c=0000000000000000" href="https://choose.url.com/ntag424?e=00000000000000000000000000000000&amp;c=0000000000000000" target="_blank" rel="noopener">https://choose.url.com/ntag424?e=00000000000000000000000000000000&amp;c=0000000000000000</A></DIV><DIV>The write file access was set to 0. Here are the details:</DIV><UL><LI>TI: 9D00C4DF</LI><LI>CmdCtr: 0000</LI><LI>KSesAuthMAC: 4C6626F5E72EA694202139295C7A7FC7</LI><LI><DIV>KSesAuthENC: 1309C877509E5A215007FF0ED19CA564<BR /><BR /></DIV></LI></UL><DIV>I referred to the AN12196.pdf, specifically section 5.8.2 "Write NDEF File - using Cmd.WriteData, CommMode.FULL".(values above are according to the document) However, I am having difficulty understanding how the commands were calculated to the final form:</DIV><P>&nbsp;</P><DIV>908D00009F02000000800000421C73A27D827658AF481 FDFF20A5025B559D0E3AA21E58D347F343CFFC768BFE596 C706BC00F2176781D4B0242642A0FF5A42C461AAF894D9 A1284B8C76BCFA658ACD40555D362E08DB15CF421B51283 F9064BCBE20E96CAE545B407C9D651A3315B27373772E5 DA2367D2064AE054AF996C6F1F669170FA88CE8C4E3A4A7 BBBEF0FD971FF532C3A802AF745660F2B4D1D9A8499661EBF300&nbsp; &nbsp;</DIV><DIV>&nbsp;&nbsp;</DIV> Thu, 03 Apr 2025 09:10:40 GMT https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/Write-Data/m-p/2073563#M135 athul_pm 2025-04-03T09:10:40Z https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/Write-Data/m-p/2074918#M137 <P>Hello&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/247941">@athul_pm</a>&nbsp;</P> <P>All the steps are described in Table17, so what steps do you not understand?</P> Mon, 07 Apr 2025 07:46:07 GMT https://community.nxp.com/t5/TapLinx-SDK-TagWriter-and/Write-Data/m-p/2074918#M137 KaiLi 2025-04-07T07:46:07Z