Databases
StackOverflow2013
Postsdbo
PONfcV Transceive command throws tag lost exception with TI HF-I plus tag(ISO15693) in android
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PONfcV Transceive command throws tag lost exception with TI HF-I plus tag(ISO15693) in android
    primarykey
    data
    text
    <p>I am trying to talk to a ISO15693 Tag. Tag type is TI HF-I Plus. When I issue a Get System Info command, the command executes normally and a proper response is received. For most other commands sent to the tag, the framework does not seem to handle the response properly. TAG LOST exception is thrown for most other commands. Has anyone successfully implemented ISO15693 commands in Android ?</p> <p>Source code:</p> <pre><code>@Override protected byte[] doInBackground(byte[]... params) { NfcV mNfcVObject = NfcV.get(mTag); byte[] mCommand = null; switch(params[0][0]){ case ReadSingleBlock: mCommand = new byte[]{0x02, 0x20, params[1][0]}; break; case ReadMultipleBlocks: mCommand = new byte[]{0x02, 0x23,params[1][0],params[2][0]}; break; case WriteSingleBlock: mCommand = new byte[]{0x42, 0x21, (byte)params[1][0],params[2][0],params[2][1],params[2][2],params[2][3]}; break; case GetSystemInfo: mCommand = new byte[]{0x00,(byte)0x2B}; break; } if (mNfcVObject != null) { try { mNfcVObject.connect(); } catch (IOException e) { e.printStackTrace(); Log.e(LOG_TAG, e.toString()); } if (mNfcVObject.isConnected()) { int i = 0; try { mResponse = mNfcVObject.transceive(mCommand); String responseString = FlomioNdefHelper.mBytesToHexString(mResponse); Log.d(String.format(LOG_TAG + " Response %d", i), responseString); } catch (IOException e) { e.printStackTrace(); Log.e(LOG_TAG, e.toString()); } try { mNfcVObject.close(); } catch (IOException e) { e.printStackTrace(); Log.e(LOG_TAG, e.toString()); } } } return mResponse; } @Override protected void onPostExecute(byte[] response) { super.onPostExecute(response); mOnCommandExecutedCallBack.onCommandExecuted(response); return; } </code></pre>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USMichael Roland
    1. USperceptron
    plurals
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PONfcV Transceive command throws tag lost exception with TI HF-I plus tag(ISO15693) in android
      1. USericn
      1. VTFavorite
    1. COCould you show some of your source code?
      singulars
      1. PONfcV Transceive command throws tag lost exception with TI HF-I plus tag(ISO15693) in android
      1. USNFC guy
    2. CO@NFC guy updated the post to include the code. Actually, this problem still exists. However for time being I am reading back the each block from the ISO15693 tag(since Read Single Block command works) to verify my write operation(Write operation to single block or multiple blocks fails with TAG_LOST Exception).
      singulars
      1. PONfcV Transceive command throws tag lost exception with TI HF-I plus tag(ISO15693) in android
      1. USperceptron
    3. CO@NFC guy Also I see from your post here, http://stackoverflow.com/questions/10277337/why-i-cant-read-st-m24lr64-as-ndef-messages-with-android-nfc, you say NfcV Object is supported on Nexus 4. Are you saying, if TI's ISO15693 tag, Plus, Pro or Standard is tapped against a Nexus 4, the intent will go to to NDEF_Discovered instead of TAG_Discovered ?
      singulars
      1. PONfcV Transceive command throws tag lost exception with TI HF-I plus tag(ISO15693) in android
      1. USperceptron
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload