SCR331-DI Product Technical Manual
Any other value sent as mode will set the type as the default one, that is TYPE AB.
5.8 READER_CNTLESS_RF_SWITCH
This escape message ID can be used to retrieve the current RF state (ON/OFF) in reader and to
switch the RF state. Applications may call this escape message, to switch ON or OFF the RF Field.
The first byte of the input buffer shall contain the escape message value. The second byte contains
the value indicating the function ON / OFF / GET_STATE.
For the function values ON/OFF there will be no output and the output buffer shall point to NULL. This
functions influence RF state of reader appropriately.
For the function value GET_STATE, the output buffer will be a BYTE buffer and it will contain the
current state (ON/OFF).
Following table gives the value of second byte of input buffer as interpreted by firmware
S.No.
Field state
Value
Remarks
1
OFF
0x00
Switch RF Field off
2
ON
0x01
Switch RF- Field on
3
GET_STATE 0xFF
Get Current Field state
Following table gives the value of field state returned for GET_STATE function ID.
S.No.
Field state
Value
Remarks
1
OFF
0x00
RF Field off
2
ON
0x01
RF- Field on
The default state is RF ON.
5.9 READER_CNTLESS_RAW_CFG
This escape message ID configures the reader in raw mode. Applications may call this function to
configure the reader to any specific raw. Initially user needs to switch from the normal mode to the
RAW mode. In Raw mode, user can configure the type of card, the CRC values. After this, user can
issue any type of command to the card.
During this mode, the contact-less polling (PCSC- standard) has been disabled because in
contact-less polling we issue ISO specific command set.
The input buffer values are as given below
S.No. Types
Offset Remarks
1 Escape
Function
value
0
Escape Function value
2
Type
1
Type A (0) / Type B (1)
3 CRC
(Higher
Byte)
2
User specified higher byte of CRC
4 CRC
(Lower
Byte)
3
User specified lower byte of CRC
Once these parameters are set we can do Raw transmit.
IND.SCR331-DI.MANUAL.VER.1.8
VER1.8
Page 29 of 36
