Question

我正在使用Android手机在NT3H2111 nfc芯片的EEPROM中读取和写入一些数据。

更改扇区的方法似乎正在起作用，但无论如何，当我尝试读取内容时，扇区没有更改，它仍然位于扇区0上。

declare @flg int=3--test with 1,2,3,4 ...
create table #temp(id int identity(1,1),col varchar(10))
insert into #temp values ('A'),('B'),('C'),('D'),('E'),('F'),('G'),('H')

create table #temp1(id int ,col varchar(10),flag int,rownum int)
declare @PvtCol varchar(500)=''
declare @Headcol varchar(500)
declare @Sql nvarchar(500)


WITH CTE
     AS (SELECT id,
                col,
                CASE
                    WHEN(id % @flg) = 0
                    THEN @flg
                    ELSE(id % @flg)
                END flag
         FROM #temp),
     CTE1
     AS (SELECT *,
                ROW_NUMBER() OVER(PARTITION BY flag
                ORDER BY id) rownum
         FROM cte)

     INSERT INTO #temp1
     (id,
      col,
      flag,
      rownum
     )
            SELECT id,
                   col,
                   flag,
                   rownum
            FROM cte1;

SELECT @PvtCol = COALESCE(@PvtCol + ', ' + QUOTENAME(rownum), QUOTENAME(rownum)),
       @Headcol = COALESCE(@Headcol + ', ' + QUOTENAME(rownum) + ' as ' + 'col', QUOTENAME(rownum) + ' as ' + 'col') + CAST(rownum AS VARCHAR)
FROM #temp1
WHERE flag = 1;

SET @PvtCol = STUFF(@PvtCol, 1, 1, '');

SELECT @PvtCol,
       @Headcol;

SET @Sql = 'select flag,' + @Headcol + ' from 
(
select flag, col,rownum from #temp1
)src
pivot(max(col) for rownum in(' + @PvtCol + ')) as pvt';

PRINT @Sql;

EXECUTE sp_executesql
        @Sql;

DROP TABLE #temp, #temp1;

...

@Override
protected void onNewIntent(Intent intent) {
    try {
        Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
        ntagHandler = new NtagHandler(tag);
        ntagHandler.connect();
        if(mode == AppMode.READ) {
            Ve95_DataModelHandler.readSectionNames(ve95DataModel, ntagHandler);
            populateView();
        } else if(mode == AppMode.WRITE) {
            populateDataModel();
            Ve95_DataModelHandler.writeSectionNames(ve95DataModel, ntagHandler);
        }
        ntagHandler.close();
        ImageView img = findViewById(R.id.imageViewNFCConnect);
        if(img != null) {
            img.setVisibility(View.INVISIBLE);
            mode = AppMode.READ;
        }
    } catch(IOException e) {
        Toast.makeText(this, "Caught exception: " + e.toString(), Toast.LENGTH_LONG).show();
    }
}

...

public boolean sectorSelect(int sector) throws IOException {
    byte[] cmd_sel1 = { (byte)0xC2, (byte)0xFF };
    byte[] cmd_sel2 = { (byte)sector, (byte)0x00, (byte)0x00, (byte)0x00 };
    byte[] result1 = nfca.transceive(cmd_sel1);
    if (result1 == null) {
        throw new TagLostException();
    } else if ((result1.length == 1) && ((result1[0] & 0x00A) == 0x000)) {
        return false;
    } else {
        try {
            byte[] result2 = nfca.transceive(cmd_sel2);
            if (result2 == null) {
                throw new TagLostException();
            } else if ((result2.length == 1) && ((result2[0] & 0x00A) == 0x000)) {
                // NACK response according to DigitalProtocol
                return false;
            } else {
                return true;
            }
        } catch (Exception e) {
            // passive ACK
            Log.d(TAG, "sectorSelect caught exception, but succeeded anyway");
            return true;
        }
    }
}

我得到了这个结果，但是从数据中我可以看到该扇区仍然为零，并且尚未更改为扇区1。

D / Ve95_DataModelHandler：读取节名称

D /：sectorSelect捕获了异常，但还是成功了

D / Ve95_DataModelHandler：扇区选择返回true

D / Ve95_DataModelHandler：04，B2,87，CA，D4,64,80,00,44,00,00,00,00 ....

有人知道如何改变行业吗？

致谢

亨里克

Answer 1

自己解决了。安装了1K芯片而不是2K芯片。难怪它没有用：）

如何在NT3H2111 NFC芯片上选择扇区

1 个答案: