User Manual
Table Of Contents
- E7 IC Card Reader Introduction
- 1.1 Overview
- 1.2 Features
- 1.3 Device Interface
- 1.4 Peader Packing List
- 1.5 Software
- 1.6 Reader Type Description
- 1.7 Function Instruction
- 1.8 API Function List
- Common Functions
- Device Function
- Keyboard Specific Functions
- S50 card functions
- S70 card specific function
- Ultralight card specific function
- Ultralight-C card specific function
- Mifare pro card specific function
- Mifare PLUS card specific function
- Contactless CPU card(ISO14443) specific function
- Desfire card specific function
- CPU(SAM) card specific functions
- 4442 card-specific functions
- 4428 Card-Specific Functions
- 1.9 Error codes and Meanings
- 2. API Function
- 2.1 Common Functions
- 2.2 Device Functions
- 2.3 Keyboard Special Functions
- 2.4 S50(M1)Functions
- 2.5 S70 card specific function
- 2.6 Ultralight card specific function
- 2.7 Ultralight-Ccard specific function
- 2.8 Mifare Pro card specific function
- 2.9 Contactless CPU card(ISO1443) specific functi
- 2.10 Desfirecard specific function
- 2.11 Mifare Plus card specific function
- 2.12 CPU(SAM)Functions
- 2.13 SLE4442 special Functions
- 2.14 SLE4428 special Functions
- 3.MIFARE ONE Card Structure
- 4.Appendix

29
Example
int st;
unsigned long value;
value=10;
st=fw_increment(icdev,1,value); /*Increment 10 to the value of block 1*/
st=fw_transfer(icdev,1);
Remark
After call this function,the function fw_transfer should be called immediately,
otherwise,the value will not be updated.
fw_readval(int icdev,unsigned char _Adr,unsigned long *_Value);
Description
Read value of certain block.
Parameters
icdev:Value of Device Handle.
_Adr:Address of block
_Value:[out]Value for read
Return Value
0 if successful; otherwise, Nonzero.
Example
int st;
unsigned long value;
st=fw_readval(icdev,1,&value); / * Read out the value of block 1, and
assign to value * /
int fw_decrement(int icdev,unsigned char _Adr,unsigned long _Value);
Description
Decrement value of certain block.
Parameters
icdev:Value of Device Handle.
_Adr:Address of block
_Value:Value for decrement
Return Value
0 if successful; otherwise, Nonzero.
Example
int st;
unsigned long value;
value=10;
st=fw_decrement(icdev,1,value); /*reduce value to the value of block 1 */
st=fw_transfer(icdev,1);
Remark
After call this function,the function fw_transfer should be called immediately ,
otherwise, the value will not be updated.
int fw_restore(int icdev,unsigned char _Adr);
Description