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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ST25TA02K датащи(PDF) 43 Page - STMicroelectronics |
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ST25TA02K датащи(HTML) 43 Page - STMicroelectronics |
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43 / 50 page  DocID027801 Rev 1 43/50 ST25TA02K Functional procedures 47 7 Functional procedures This section describes some procedure to access the memory or manage its protection. 7.1 Selection of an NDEF message The RF host shall use this procedure to detect the NDEF message inside an ST25TA02K. The NDEF detection procedure is as follows: 1. Open an RF session 2. Send the SelectNDEFTagApplication command 3. Select the CC file 4. Read the CC file 5. Select the NDEF file. 7.2 Reading of an NDEF message The RF host executes the NDEF read procedure to read the NDEF file. 1. Detect successfully the NDEF file using the NDEF detection procedure 2. Check that the read access without any security is granted for the NDEF file from the information provided by the CC file 3. Select the NDEF file 4. Read the NDEF file. 7.3 Reading a locked 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 Read password by using the Verify command 4. Read the data in the NDEF file. 7.4 Locking an NDEF file The RF host executes this procedure to protect an NDEF file. 1. Select the NDEF Tag Application 2. Check the right access provided by the CC file 3. Select the NDEF file 4. Present the NDEF file Write password by using the Verify command 5. Lock the NDEF file by sending the Enable verification command. |
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