Posted on November 15, 2017 at 17:34Hi,
we are trying to using the ST25DV64K to implement the reading and writing data via RF between the ST25DV64K and Android device.
The area 3 is protected by RF password 3 with default password .
Tried to use the below code to open the RF security session but always return �(byte)0x01�. Could you advise ?
It would be appreciated if the sample code of reading and writing the data on the protected Area is also provided.
Thanks.
public static byte
[]
SendPresentPasswordCommand
(Tag myTag
, byte
PasswordNumber
, byte
[] PasswordData
,
DataDevice ma)
{
byte
[] response =
new byte
[] {(
byte
)
0xFF
}
;
byte
[] PresentPasswordFrame
;
PresentPasswordFrame =
new byte
[]{(
byte
)
0x02
,
(
byte
)
0xB3
,
(
byte
)
0x02
,
PasswordNumber
,
PasswordData[
0
]
,
PasswordData[
1
]
,
PasswordData[
2
]
,
PasswordData[
3
]}
;
PresentPasswordFrame =
new byte
[]{(
byte
)
0x02
,
(
byte
)
0xB3
,
(
byte
)
0x02
,
(
byte
)
0x03
,
(
byte
)
0x00
,
(
byte
)
0x00
,
(
byte
)
0x00
,
(
byte
)
0x00
}
;
int
errorOccured =
1
;
while
(errorOccured !=
0
)
{
try
{
NfcV nfcvTag = NfcV.
get
(myTag)
;
nfcvTag.close()
;
nfcvTag.connect()
;
response = nfcvTag.transceive(PresentPasswordFrame)
;
if
(response[
0
] == (
byte
)
0x00
|| response[
0
] == (
byte
)
0x01
)
//response 01 = error sent back by tag (new Android 4.2.2) or BC
{
errorOccured =
0
;
//Used for DEBUG :
}
}
catch
(Exception e)
{
errorOccured++
;
//Used for DEBUG :
if
(errorOccured ==
2
)
{
//Used for DEBUG :
//Used for DEBUG :
return
response
;
}
}
}
return
response
;
}
#st25dv64k #android
