ifx_i2c_data_link_layer.c File Reference

This file implements the APIs for data link layer of the Infineon I2C Protocol Stack library. More...

#include "ifx_i2c_data_link_layer.h"
#include "ifx_i2c_physical_layer.h"

Include dependency graph for ifx_i2c_data_link_layer.c:

Functions
optiga_lib_status_t	ifx_i2c_dl_init (ifx_i2c_context_t *p_ctx, ifx_i2c_event_handler_t handler)
	Function for initializing the module. More...
optiga_lib_status_t	ifx_i2c_dl_send_frame (ifx_i2c_context_t *p_ctx, uint16_t frame_len)
	Function for sending a frame. More...
optiga_lib_status_t	ifx_i2c_dl_receive_frame (ifx_i2c_context_t *p_ctx)
	Function for receiving a frame. More...
_STATIC_H optiga_lib_status_t	ifx_i2c_dl_calc_crc_byte (uint16_t seed, uint8_t byte)
_STATIC_H optiga_lib_status_t	ifx_i2c_dl_calc_crc (const uint8_t *p_data, uint16_t data_len)
_STATIC_H optiga_lib_status_t	ifx_i2c_dl_send_frame_internal (ifx_i2c_context_t *p_ctx, uint16_t frame_len, uint8_t seqctr_value, uint8_t resend)
_STATIC_H optiga_lib_status_t	ifx_i2c_dl_resync (ifx_i2c_context_t *p_ctx)
_STATIC_H void	ifx_i2c_dl_resend_frame (ifx_i2c_context_t *p_ctx, uint8_t seqctr_value)
_STATIC_H void	ifx_i2c_pl_event_handler (ifx_i2c_context_t *p_ctx, optiga_lib_status_t event, const uint8_t *p_data, uint16_t data_len)

Detailed Description

This file implements the APIs for data link layer of the Infineon I2C Protocol Stack library.

Copyright

MIT License

Copyright (c) 2019 Infineon Technologies AG

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE

\endcopyright

Author

Infineon Technologies AG

Function Documentation

ifx_i2c_dl_calc_crc()

_STATIC_H optiga_lib_status_t ifx_i2c_dl_calc_crc	(	const uint8_t *	p_data,
		uint16_t	data_len
	)

Here is the call graph for this function:

ifx_i2c_dl_calc_crc_byte()

_STATIC_H optiga_lib_status_t ifx_i2c_dl_calc_crc_byte	(	uint16_t	seed,
		uint8_t	byte
	)

ifx_i2c_dl_init()

optiga_lib_status_t ifx_i2c_dl_init	(	ifx_i2c_context_t *	p_ctx,
		ifx_i2c_event_handler_t	handler
	)

Function for initializing the module.

Function initializes and enables the module and registers an event handler to receive events from this module.

Precondition

• This function must be called before using the module.

Note

• None

Parameters

[in,out]	p_ctx	Pointer to ifx i2c context.
[in]	handler	Function pointer to the event handler of the upper layer.

Return values

IFX_I2C_STACK_SUCCESS	If initialization was successful.
IFX_I2C_STACK_ERROR	If the module is already initialized.

Here is the call graph for this function:

ifx_i2c_dl_receive_frame()

optiga_lib_status_t ifx_i2c_dl_receive_frame

(

ifx_i2c_context_t *

p_ctx

)

Function for receiving a frame.

Asynchronous function to receive a frame

• The function returns immediately.
• One of the following events is propagated to the event handler registered with ifx_i2c_dl_init.

Precondition

• None

Note

• None

Parameters

[in,out]

p_ctx

Pointer to ifx i2c context.

Return values

IFX_I2C_STACK_SUCCESS	If function was successful.
IFX_I2C_STACK_ERROR	If the module is busy.

Here is the call graph for this function:

ifx_i2c_dl_resend_frame()

_STATIC_H void ifx_i2c_dl_resend_frame	(	ifx_i2c_context_t *	p_ctx,
		uint8_t	seqctr_value
	)

Here is the call graph for this function:

ifx_i2c_dl_resync()

_STATIC_H optiga_lib_status_t ifx_i2c_dl_resync

(

ifx_i2c_context_t *

p_ctx

)

Here is the call graph for this function:

ifx_i2c_dl_send_frame()

optiga_lib_status_t ifx_i2c_dl_send_frame	(	ifx_i2c_context_t *	p_ctx,
		uint16_t	frame_len
	)

Function for sending a frame.

Asynchronous function to send a frame

• The function returns immediately.
• One of the following events is propagated to the event handler registered with ifx_i2c_dl_init.

Precondition

• None

Note

• None

Parameters

[in,out]	p_ctx	Pointer to ifx i2c context.
[in]	frame_len	Frame length.

Return values

IFX_I2C_STACK_SUCCESS	If function was successful.
IFX_I2C_STACK_ERROR	If the module is busy.

Here is the call graph for this function:

ifx_i2c_dl_send_frame_internal()

_STATIC_H optiga_lib_status_t ifx_i2c_dl_send_frame_internal	(	ifx_i2c_context_t *	p_ctx,
		uint16_t	frame_len,
		uint8_t	seqctr_value,
		uint8_t	resend
	)

Here is the call graph for this function:

ifx_i2c_pl_event_handler()

_STATIC_H void ifx_i2c_pl_event_handler	(	ifx_i2c_context_t *	p_ctx,
		optiga_lib_status_t	event,
		const uint8_t *	p_data,
		uint16_t	data_len
	)

Here is the call graph for this function: