src/ctccid/ccid_usb.c File Reference

#include <stdint.h>
#include <string.h>
#include "ccid_usb.h"
#include "scr.h"

Functions
int	PC_to_RDR_IccPowerOn (scr_t *ctx)
int	DetermineBaudrate (int F, int D)
int	DecodeATRValues (scr_t *ctx)
int	PC_to_RDR_SetParameters (scr_t *ctx)
int	PC_to_RDR_GetSlotStatus (scr_t *ctx)
int	PC_to_RDR_IccPowerOff (scr_t *ctx)
int	PC_to_RDR_XfrBlock (scr_t *ctx, unsigned int outlen, unsigned char *outbuf)
int	RDR_to_PC_DataBlock (scr_t *ctx, unsigned int *inlen, unsigned char *inbuf)
Variables
int	FTable [] = { 372, 372, 558, 744, 1116, 1488, 1860, -1, -1, 512, 768, 1024, 1536, 2048, -1, -1}
int	DTable [] = { -1, 1, 2, 4, 8, 16, 32, -1, 12, 20, -1, -1, -1, -1, -1, -1}

---

Function Documentation

int DecodeATRValues

(

scr_t *

ctx

)

Decode protocol specified ATR values and store them in the reader context

Parameters:

ctx	Reader context

Returns:

0 on success, negative value otherwise

int DetermineBaudrate	(	int	F,
		int	D
	)

Calculate the current baudrate depending on the values of F and D

Parameters:

F	Clock rate conversion integer
D	Baud rate adjustment integer

Returns:

Calculated baudrate

int PC_to_RDR_GetSlotStatus

(

scr_t *

ctx

)

Get the current state of the reader slot

Parameters:

ctx	Reader context

Returns:

ICC_PRESENT_AND_INACTIVE, ICC_PRESENT_AND_ACTIVE, NO_ICC_PRESENT or -1 on error

int PC_to_RDR_IccPowerOff

(

scr_t *

ctx

)

Power off the ICC in the reader

Parameters:

ctx	Reader context

Returns:

0 on success, negative value otherwise

int PC_to_RDR_IccPowerOn

(

scr_t *

ctx

)

Power on the ICC in the reader and set the ATR and the communication parameters as specified

Parameters:

ctx	Reader context

Returns:

0 on success, negative value otherwise

int PC_to_RDR_SetParameters

(

scr_t *

ctx

)

Set communication protocol parameters (guard time, FI, DI, IFSC)

Parameters:

ctx	Reader context

Returns:

0 on success, negative value otherwise

int PC_to_RDR_XfrBlock	(	scr_t *	ctx,
		unsigned int	outlen,
		unsigned char *	outbuf
	)

Exchange data block between PC and reader

Parameters:

ctx	Reader context
outlen	Length of outgoing data
outbuf	Outgoing data buffer

Returns:

0 on success, negative value otherwise

int RDR_to_PC_DataBlock	(	scr_t *	ctx,
		unsigned int *	inlen,
		unsigned char *	inbuf
	)

Exchange data block between reader and PC

Parameters:

ctx	Reader context
inlen	Length of data buffer/actual length of incoming data
inbuf	Incoming data buffer

Returns:

0 on success, negative value otherwise

---

Variable Documentation

int DTable[] = { -1, 1, 2, 4, 8, 16, 32, -1, 12, 20, -1, -1, -1, -1, -1, -1}

int FTable[] = { 372, 372, 558, 744, 1116, 1488, 1860, -1, -1, 512, 768, 1024, 1536, 2048, -1, -1}