Smart Card Service

The smart card service provides functions for cards supporting ISO7816 protocol.

Macros
#define	CASE1   1
	Case for APDU commands. More...
#define	CASE2   2
#define	CASE3   3
#define	ISO7816_USART   USART0
	Checking board configuration of the ISO7816 handler. More...
#define	ISO_NULL_VAL   0x60
	NULL byte to restart byte procedure. More...
#define	RST_WAIT_TIME   120
	Reset wait time. More...
#define	RX_TIMEOUT   12000
	Receive timeout. More...
#define	USART_RCV   1
#define	USART_SEND   0
	Flip flop for send and receive char. More...

Functions
void	iso7816_cold_reset (void)
	Cold reset. More...
void	iso7816_data_block_atr (uint8_t *p_atr, uint8_t *p_length)
	Answer To Reset (ATR). More...
void	iso7816_decode_atr (uint8_t *p_atr)
	Decode ATR trace. More...
static uint32_t	iso7816_get_char (uint8_t *p_char_received)
	Get a character from ISO7816. More...
uint8_t	iso7816_get_reset_statuts (void)
	Pin status for ISO7816 RESET PIN. More...
void	iso7816_icc_power_off (void)
	ISO7816 ICC power off. More...
static void	iso7816_icc_power_on (void)
	ISO7816 ICC power on. More...
void	iso7816_init (const usart_iso7816_opt_t *p_usart_opt, uint32_t ul_mck, uint32_t ul_rst_pin_idx)
	Initializes a ISO7816 interface device. More...
static uint32_t	iso7816_send_char (uint8_t uc_char)
	Send a char to ISO7816. More...
void	iso7816_warm_reset (void)
	Warm reset. More...
uint16_t	iso7816_xfr_block_tpdu_t0 (const uint8_t *p_apdu, uint8_t *p_message, uint16_t us_length)
	Transfer Block TPDU T = 0. More...

Variables
volatile uint32_t	g_ul_clk
	Define the main clock of the system. More...
static uint8_t	gs_uc_state = USART_RCV
	Variable for state of send and receive from USART. More...
uint32_t	gs_ul_rst_pin_idx
	Card reset PIN. More...

#define CASE1   1

Case for APDU commands.

Referenced by iso7816_xfr_block_tpdu_t0().

#define CASE2   2

Referenced by iso7816_xfr_block_tpdu_t0().

#define CASE3   3

Referenced by iso7816_xfr_block_tpdu_t0().

#define ISO7816_USART   USART0

Checking board configuration of the ISO7816 handler.

Referenced by iso7816_cold_reset(), iso7816_get_char(), iso7816_init(), iso7816_send_char(), and iso7816_warm_reset().

#define ISO_NULL_VAL   0x60

NULL byte to restart byte procedure.

Referenced by iso7816_xfr_block_tpdu_t0().

#define RST_WAIT_TIME   120

Reset wait time.

Referenced by iso7816_cold_reset(), and iso7816_warm_reset().

#define RX_TIMEOUT   12000

Receive timeout.

Referenced by iso7816_get_char().

#define USART_RCV   1

Referenced by iso7816_get_char(), and iso7816_send_char().

#define USART_SEND   0

Flip flop for send and receive char.

Referenced by iso7816_get_char(), and iso7816_send_char().

void iso7816_cold_reset

(

void

)

Cold reset.

References iso7816_icc_power_on(), ISO7816_USART, RST_WAIT_TIME, usart_read(), usart_reset_iterations(), usart_reset_nack(), and usart_reset_status().

void iso7816_data_block_atr	(	uint8_t *	p_atr,
		uint8_t *	p_length
	)

Answer To Reset (ATR).

Parameters

p_atr	Pointer to ATR buffer.
p_length	Pointer for store the ATR length.

References iso7816_get_char().

Referenced by main().

void iso7816_decode_atr

(

uint8_t *

p_atr

)

Decode ATR trace.

Parameters

p_atr

Pinter on ATR buffer.

Referenced by main().

static uint32_t iso7816_get_char ( uint8_t *  p_char_received )

static

Get a character from ISO7816.

Parameters

p_char_received

Pointer for store the received char.

Returns

0: if timeout else status of US_CSR.

References ISO7816_USART, RX_TIMEOUT, usart_get_status(), USART_RCV, usart_read(), usart_reset_iterations(), usart_reset_nack(), usart_reset_status(), and USART_SEND.

Referenced by iso7816_data_block_atr(), and iso7816_xfr_block_tpdu_t0().

uint8_t iso7816_get_reset_statuts

(

void

)

Pin status for ISO7816 RESET PIN.

Returns

1 if the Pin RESET is high; otherwise 0.

References gpio_pin_is_high, ioport_get_pin_level(), and IOPORT_PIN_LEVEL_HIGH.

void iso7816_icc_power_off

(

void

)

ISO7816 ICC power off.

References gpio_set_pin_low, IOPORT_PIN_LEVEL_LOW, and ioport_set_pin_level().

Referenced by iso7816_warm_reset().

static void iso7816_icc_power_on ( void  )

static

ISO7816 ICC power on.

References gpio_set_pin_high, IOPORT_PIN_LEVEL_HIGH, and ioport_set_pin_level().

Referenced by iso7816_cold_reset(), and iso7816_warm_reset().

void iso7816_init	(	const usart_iso7816_opt_t *	p_usart_opt,
		uint32_t	ul_mck,
		uint32_t	ul_rst_pin_idx
	)

Initializes a ISO7816 interface device.

Parameters

p_usart_opt	Pointer to an ISO7816 instance.
ul_mck	USART module input clock frequency.
ul_rst_pin_idx	Control smart card RST pin index.

References gpio_set_pin_low, IOPORT_PIN_LEVEL_LOW, ioport_set_pin_level(), ISO7816_USART, usart_disable_interrupt(), usart_enable_rx(), usart_enable_tx(), usart_init_iso7816(), and usart_set_tx_timeguard().

Referenced by main().

static uint32_t iso7816_send_char ( uint8_t  uc_char )

static

Send a char to ISO7816.

Parameters

uc_char

Char to be sent.

Returns

status of US_CSR.

There are errors happened, reset the status bit.

References ISO7816_USART, usart_get_status(), USART_RCV, usart_reset_iterations(), usart_reset_nack(), usart_reset_status(), USART_SEND, and usart_write().

Referenced by iso7816_xfr_block_tpdu_t0().

void iso7816_warm_reset

(

void

)

Warm reset.

References iso7816_icc_power_off(), iso7816_icc_power_on(), ISO7816_USART, RST_WAIT_TIME, usart_read(), usart_reset_iterations(), usart_reset_nack(), and usart_reset_status().

Referenced by main().

uint16_t iso7816_xfr_block_tpdu_t0	(	const uint8_t *	p_apdu,
		uint8_t *	p_message,
		uint16_t	us_length
	)

Transfer Block TPDU T = 0.

Parameters

p_apdu	Pointer to APDU buffer.
p_message	Pointer to message buffer.
us_length	Block length.

Returns

Message index.

References CASE1, CASE2, CASE3, iso7816_get_char(), iso7816_send_char(), and ISO_NULL_VAL.

Referenced by send_receive_cmd().

volatile uint32_t g_ul_clk

Define the main clock of the system.

uint8_t gs_uc_state = USART_RCV

static

Variable for state of send and receive from USART.

uint32_t gs_ul_rst_pin_idx

Card reset PIN.