Collaboration diagram for TCP Private Functions:

Functions
static int	agile_modbus_tcp_set_slave (agile_modbus_t *ctx, int slave)
	TCP set address interface.

static int	agile_modbus_tcp_build_request_basis (agile_modbus_t ctx, int function, int addr, int nb, uint8_t req)
	TCP builds the basic request message interface (header message)

static int	agile_modbus_tcp_build_response_basis (agile_modbus_sft_t sft, uint8_t rsp)
	TCP builds a basic response message interface (header message)

static int	agile_modbus_tcp_prepare_response_tid (const uint8_t req, int req_length)
	TCP ready response interface.

static int	agile_modbus_tcp_send_msg_pre (uint8_t *req, int req_length)
	TCP pre-send data interface (calculate the value of the length field and store it)

static int	agile_modbus_tcp_check_integrity (agile_modbus_t ctx, uint8_t msg, const int msg_length)
	TCP check receiving data integrity interface.

static int	agile_modbus_tcp_pre_check_confirmation (agile_modbus_t ctx, const uint8_t req, const uint8_t *rsp, int rsp_length)
	TCP pre-check confirmation interface (compare transaction identifier and protocol identifier)

Detailed Description

Function Documentation

◆ agile_modbus_tcp_set_slave()

static int agile_modbus_tcp_set_slave	(	agile_modbus_t *	ctx,
		int	slave
	)

static

TCP set address interface.

Parameters

ctx	modbus handle
slave	slave address

Returns: 0: success

Definition at line 34 of file agile_modbus_tcp.c.

◆ agile_modbus_tcp_build_request_basis()

static int agile_modbus_tcp_build_request_basis	(	agile_modbus_t *	ctx,
		int	function,
		int	addr,
		int	nb,
		uint8_t *	req
	)

static

TCP builds the basic request message interface (header message)

Parameters

ctx	modbus handle
function	function code
addr	register address
nb	number of registers
req	data storage pointer

Returns: data length

Definition at line 49 of file agile_modbus_tcp.c.

◆ agile_modbus_tcp_build_response_basis()

static int agile_modbus_tcp_build_response_basis	(	agile_modbus_sft_t *	sft,
		uint8_t *	rsp
	)

static

TCP builds a basic response message interface (header message)

Parameters

sft	modbus header parameter structure pointer
rsp	data storage pointer

Returns: data length

Definition at line 86 of file agile_modbus_tcp.c.

◆ agile_modbus_tcp_prepare_response_tid()

static int agile_modbus_tcp_prepare_response_tid	(	const uint8_t *	req,
		int *	req_length
	)

static

TCP ready response interface.

Parameters

req	request data pointer
req_length	request data length

Returns: transaction identifier

Definition at line 114 of file agile_modbus_tcp.c.

◆ agile_modbus_tcp_send_msg_pre()

static int agile_modbus_tcp_send_msg_pre	(	uint8_t *	req,
		int	req_length
	)

static

TCP pre-send data interface (calculate the value of the length field and store it)

Parameters

req	data storage pointer
req_length	existing data length

Returns: data length

Definition at line 126 of file agile_modbus_tcp.c.

◆ agile_modbus_tcp_check_integrity()

static int agile_modbus_tcp_check_integrity	(	agile_modbus_t *	ctx,
		uint8_t *	msg,
		const int	msg_length
	)

static

TCP check receiving data integrity interface.

Parameters

ctx	modbus handle
msg	Receive data pointer
msg_length	valid data length

Returns: valid data length

Definition at line 144 of file agile_modbus_tcp.c.

◆ agile_modbus_tcp_pre_check_confirmation()

static int agile_modbus_tcp_pre_check_confirmation	(	agile_modbus_t *	ctx,
		const uint8_t *	req,
		const uint8_t *	rsp,
		int	rsp_length
	)

static

TCP pre-check confirmation interface (compare transaction identifier and protocol identifier)

Parameters

ctx	modbus handle
req	request data pointer
rsp	response data pointer
rsp_length	response data length

Returns: 0: success; others: exception

Definition at line 159 of file agile_modbus_tcp.c.