twr_atsha204

Driver for Atmel ATSHA204 CryptoAuthentication. More...

Typedefs
typedef struct twr_atsha204_t	twr_atsha204_t
	ATSHA204 instance.

Enumerations
enum	twr_atsha204_event_t {   TWR_ATSHA204_EVENT_ERROR = 0 ,   TWR_ATSHA204_EVENT_REVISION_NUMBER = 1 ,   TWR_ATSHA204_EVENT_SERIAL_NUMBER = 2 }

Functions
void	twr_atsha204_init (twr_atsha204_t *self, twr_i2c_channel_t i2c_channel, uint8_t i2c_address)
	Initialize ATSHA204 driver. More...
void	twr_atsha204_set_event_handler (twr_atsha204_t *self, void(*event_handler)(twr_atsha204_t *, twr_atsha204_event_t, void *), void *event_param)
	Set callback function. More...
bool	twr_atsha204_is_ready (twr_atsha204_t *self)
	Check if is ready for commands. More...
bool	twr_atsha204_read_serial_number (twr_atsha204_t *self)
	Reqeust for serial number. More...
bool	twr_atsha204_get_serial_number (twr_atsha204_t *self, void *destination, size_t size)
	Get serial number. More...

Detailed Description

Driver for Atmel ATSHA204 CryptoAuthentication.

Enumeration Type Documentation

twr_atsha204_event_t

enum twr_atsha204_event_t

Enumerator
TWR_ATSHA204_EVENT_ERROR	Error event.
TWR_ATSHA204_EVENT_REVISION_NUMBER	Event revision number is available.
TWR_ATSHA204_EVENT_SERIAL_NUMBER	Event serial number is available.

Definition at line 14 of file twr_atsha204.h.

Function Documentation

twr_atsha204_get_serial_number()

bool twr_atsha204_get_serial_number	(	twr_atsha204_t *	self,
		void *	destination,
		size_t	size
	)

Get serial number.

Parameters

[in]	self	Instance
[out]	destination	Pointer to destination object where device unique ID will be stored
[in]	size	Size of destination object (in bytes)

Returns

true When value is valid

false When value is invalid

Definition at line 59 of file twr_atsha204.c.

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twr_atsha204_init()

void twr_atsha204_init	(	twr_atsha204_t *	self,
		twr_i2c_channel_t	i2c_channel,
		uint8_t	i2c_address
	)

Initialize ATSHA204 driver.

Parameters

[in]	self	Instance
[in]	i2c_channel	I2C channel
[in]	i2c_address	I2C device address

Definition at line 15 of file twr_atsha204.c.

Referenced by twr_radio_init().

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twr_atsha204_is_ready()

bool twr_atsha204_is_ready

(

twr_atsha204_t *

self

)

Check if is ready for commands.

Parameters

[in]

self

Instance

Returns

true If ready

false If not ready

Definition at line 35 of file twr_atsha204.c.

Referenced by twr_atsha204_get_serial_number(), and twr_atsha204_read_serial_number().

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twr_atsha204_read_serial_number()

bool twr_atsha204_read_serial_number

(

twr_atsha204_t *

self

)

Reqeust for serial number.

Parameters

[in]

self

Instance

Returns

true On success

False When other command is in progress

Definition at line 40 of file twr_atsha204.c.

Referenced by twr_radio_init().

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twr_atsha204_set_event_handler()

void twr_atsha204_set_event_handler	(	twr_atsha204_t *	self,
		void(*)(twr_atsha204_t *, twr_atsha204_event_t, void *)	event_handler,
		void *	event_param
	)

Set callback function.

Parameters

[in]	self	Instance
[in]	event_handler	Function address
[in]	event_param	Optional event parameter (can be NULL)

Definition at line 29 of file twr_atsha204.c.

Referenced by twr_radio_init().

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