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SRTAG2KL 数据表(PDF) 45 Page - STMicroelectronics |
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SRTAG2KL 数据表(HTML) 45 Page - STMicroelectronics |
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45 / 51 page ![]() DocID026583 Rev 2 45/51 SRTAG2KL Functional procedures 7.5 Unlocking an NDEF file The RF host executes this procedure to read an NDEF file which has been locked previously. 1. Select the NDEF Tag Application 2. Select the NDEF file 3. Present the NDEF file Write password by using the Verify command 4. Unlock the NDEF file by sending the Disable verification command. 7.6 Reaching the read-only state for an NDEF file The RF host executes this procedure to read an NDEF file which has been locked previously. 1. Select the NDEF Tag Application 2. Select the NDEF file 3. Transmit the NDEF file Write password by using the Verify command 4. Send an EnablePermanentState command. 7.7 Changing a File type Procedure The RF host executes this procedure to change the File Type of a file for which all access rights were previously granted. 1. Select the NDEF Tag Application 2. Select the File to be modified 3. Set the File Length to 0x00 using the UpdateBinary command 4. Send an UpdateFileType command with the New file Type as data. |
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