ifx_i2c_transport_layer.c File Reference

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

#include "ifx_i2c_transport_layer.h"
#include "ifx_i2c_data_link_layer.h"

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Functions
optiga_lib_status_t	ifx_i2c_tl_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_tl_transceive (ifx_i2c_context_t *p_ctx, uint8_t *p_packet, uint16_t packet_len, uint8_t *p_recv_packet, uint16_t *p_recv_packet_len)
	Function to transmit and receive a packet. More...
_STATIC_H optiga_lib_status_t	ifx_i2c_tl_resend_packets (ifx_i2c_context_t *p_ctx)
_STATIC_H uint8_t	ifx_i2c_tl_calculate_pctr (const ifx_i2c_context_t *p_ctx)
_STATIC_H optiga_lib_status_t	ifx_i2c_tl_send_next_fragment (ifx_i2c_context_t *p_ctx)
_STATIC_H optiga_lib_status_t	ifx_i2c_tl_send_chaining_error (ifx_i2c_context_t *p_ctx)
_STATIC_H optiga_lib_status_t	ifx_i2c_tl_check_chaining_error (uint8_t current_chaning, uint8_t previous_chaining)
_STATIC_H optiga_lib_status_t	presence_bit_check (const ifx_i2c_context_t *p_ctx, uint8_t pctr)
_STATIC_H void	ifx_i2c_dl_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 transport 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_event_handler()

_STATIC_H void ifx_i2c_dl_event_handler	(	ifx_i2c_context_t *	p_ctx,
		optiga_lib_status_t	event,
		const uint8_t *	p_data,
		uint16_t	data_len
	)

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ifx_i2c_tl_calculate_pctr()

_STATIC_H uint8_t ifx_i2c_tl_calculate_pctr

(

const ifx_i2c_context_t *

p_ctx

)

ifx_i2c_tl_check_chaining_error()

_STATIC_H optiga_lib_status_t ifx_i2c_tl_check_chaining_error	(	uint8_t	current_chaning,
		uint8_t	previous_chaining
	)

ifx_i2c_tl_init()

optiga_lib_status_t ifx_i2c_tl_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.

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ifx_i2c_tl_resend_packets()

_STATIC_H optiga_lib_status_t ifx_i2c_tl_resend_packets

(

ifx_i2c_context_t *

p_ctx

)

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ifx_i2c_tl_send_chaining_error()

_STATIC_H optiga_lib_status_t ifx_i2c_tl_send_chaining_error

(

ifx_i2c_context_t *

p_ctx

)

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ifx_i2c_tl_send_next_fragment()

_STATIC_H optiga_lib_status_t ifx_i2c_tl_send_next_fragment

(

ifx_i2c_context_t *

p_ctx

)

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ifx_i2c_tl_transceive()

optiga_lib_status_t ifx_i2c_tl_transceive	(	ifx_i2c_context_t *	p_ctx,
		uint8_t *	p_packet,
		uint16_t	packet_len,
		uint8_t *	p_recv_packet,
		uint16_t *	p_recv_packet_len
	)

Function to transmit and receive a packet.

• The function returns immediately.
• One of the following events is propagated to the event handler registered with ifx_i2c_tl_init

Precondition

• This function must be called before using the module.

Note

• None

Parameters

[in,out]	p_ctx	Pointer to ifx i2c context.
[in]	p_packet	Buffer containing the packet header.
[in]	packet_len	Packet header length.
[in]	p_recv_packet	Buffer containing the packet payload.
[in]	p_recv_packet_len	Packet payload length.

Return values

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

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presence_bit_check()

_STATIC_H optiga_lib_status_t presence_bit_check	(	const ifx_i2c_context_t *	p_ctx,
		uint8_t	pctr
	)