Exception on start up in NppFromReaderToPhone about ismb-npp-java HOT 7 OPEN

Hi,

I get the same error :(. Every time I try the NppFromReaderToPhone, I get the 
""[DEBUG] {receiving [2 bytes]} 0x63 0x00 "". I´m using an ACR122 too...

Any solution?

Thanks in advance!

@Developer
Could you post your version of the firmware (ACR122)? Maybe the issue is 
related to a "bug", could be also a feature ;), inside a certain firmware 
version.

Cheers,
Roman

What would be the best way to publish the fix?

The solution for this issue is really trivial. The power of the antenna is off 
;) Before starting to transmit any kind of APDU towards the contactless 
interface, one has to switch on the power of the antenna according to the spec 
(http://www.nfc-reader.com/NFC-smart-card-reader/ACR122-API-Manual/API_ACR122.pd
f). Otherwise the answer will be 0x63 0x00.

Log:
Get factory
Get terminals
Terminal name: ACS ACR122U 00 00
T=0
Called rightProcedureTarget..
[DEBUG] {sending   [9 bytes]} 0xFF 0x00 0x00 0x00 0x04 0xD4 0x32 0x01 0x01 
[DEBUG] {receiving [4 bytes]} 0xD5 0x33 0x90 0x00 
[DEBUG] {sending   [50 bytes]} 0xFF 0x00 0x00 0x00 0x2D 0xD4 0x8C 0x01 0x00 
0x00 0x00 0x00 0x00 0x40 0x01 0xFE 0x0F 0xBB 0xBA 0xA6 0xC9 0x89 0x00 0x00 0x00 
0x00 0x00 0x00 0x00 0x00 0xFF 0xFF 0x01 0xFE 0x0F 0xBB 0xBA 0xA6 0xC9 0x89 0x00 
0x00 0x06 0x46 0x66 0x6D 0x01 0x01 0x10 0x00 
[DEBUG] {receiving [35 bytes]} 0xD5 0x8D 0x04 0x1E 0xD4 0x00 0xF9 0x2A 0x2A 
0xAB 0xBB 0x12 0xCE 0x64 0x29 0xC9 0x00 0x00 0x00 0x32 0x46 0x66 0x6D 0x01 0x01 
0x10 0x03 0x02 0x00 0x01 0x04 0x01 0x96 0x90 0x00 
[DEBUG] {sending   [7 bytes]} 0xFF 0x00 0x00 0x00 0x02 0xD4 0x86 
[DEBUG] {receiving [7 bytes]} 0xD5 0x87 0x00 0x00 0x00 0x90 0x00 
[DEBUG] {sending   [26 bytes]} 0xFF 0x00 0x00 0x00 0x15 0xD4 0x8E 0x05 0x20 
0x06 0x0F 0x63 0x6F 0x6D 0x2E 0x61 0x6E 0x64 0x72 0x6F 0x69 0x64 0x2E 0x6E 0x70 
0x70 
[DEBUG] {receiving [5 bytes]} 0xD5 0x8F 0x00 0x90 0x00 
[DEBUG] {sending   [7 bytes]} 0xFF 0x00 0x00 0x00 0x02 0xD4 0x86 
[DEBUG] {receiving [11 bytes]} 0xD5 0x87 0x00 0x81 0x90 0x02 0x02 0x00 0x78 
0x90 0x00 
[DEBUG] {sending   [77 bytes]} 0xFF 0x00 0x00 0x00 0x48 0xD4 0x8E 0x43 0x20 
0x00 0x01 0x00 0x00 0x00 0x01 0x01 0x00 0x00 0x00 0x39 0xD1 0x01 0x35 0x54 0x02 
0x65 0x6E 0x4E 0x50 0x50 0x20 0x74 0x65 0x73 0x74 0x20 0x63 0x6F 0x6D 0x6D 0x75 
0x6E 0x69 0x63 0x61 0x74 0x69 0x6F 0x6E 0x20 0x62 0x65 0x74 0x77 0x65 0x65 0x6E 
0x20 0x4E 0x45 0x58 0x55 0x53 0x2D 0x53 0x20 0x61 0x6E 0x64 0x20 0x41 0x43 0x52 
0x2D 0x31 0x32 0x32 
[DEBUG] {receiving [5 bytes]} 0xD5 0x8F 0x00 0x90 0x00 
Finished

Did anyone find a solution to this issue? 

I have also this problem. ...who can give a right solution???

Os jodéis todos

The solution is to transmit the following APDU before transmitting any APDU 
that is dedicated for the NFC application layer of the smartphone.

The APDU is: 0xFF 0x00 0x00 0x00 0x04 0xD4 0x32 0x01 0x01

CLA: 0xFF, INS: 0x00, P1:0x00, P2:0x00, payload's length: 0x04, payload: 0xD4, 
0x32, 0x01, 0x01

Log:

[DEBUG] {sending   [9 bytes]} 0xFF 0x00 0x00 0x00 0x04 0xD4 0x32 0x01 0x01 
[DEBUG] {receiving [4 bytes]} 0xD5 0x33 0x90 0x00 

Cheers,
Roman