Master Raw Operation Functions

Collaboration diagram for Master Raw Operation Functions:

Functions
int	agile_modbus_compute_response_length_from_request (agile_modbus_t *ctx, uint8_t *req)
	Calculate the expected response data length.
int	agile_modbus_serialize_raw_request (agile_modbus_t *ctx, const uint8_t *raw_req, int raw_req_length)
	Pack the original data into a request message.
int	agile_modbus_deserialize_raw_response (agile_modbus_t *ctx, int msg_length)
	parses the original response data

Detailed Description

Function Documentation

agile_modbus_compute_response_length_from_request()

int agile_modbus_compute_response_length_from_request	(	agile_modbus_t *	ctx,
		uint8_t *	req
	)

Calculate the expected response data length.

Note

If it is a special function code, AGILE_MODBUS_MSG_LENGTH_UNDEFINED is returned, but this does not mean an exception. When agile_modbus_check_confirmation calls this API processing, it is considered that the return value of AGILE_MODBUS_MSG_LENGTH_UNDEFINED is also valid.

Parameters

ctx	modbus handle
req	request data pointer

Returns

expected response data length

Definition at line 984 of file agile_modbus.c.

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agile_modbus_serialize_raw_request()

int agile_modbus_serialize_raw_request	(	agile_modbus_t *	ctx,
		const uint8_t *	raw_req,
		int	raw_req_length
	)

Pack the original data into a request message.

Parameters

ctx	modbus handle
raw_req	original message (PDU + Slave address)
raw_req_length	original message length

Returns

>0: Request data length; Others: Exception

Definition at line 1031 of file agile_modbus.c.

agile_modbus_deserialize_raw_response()

int agile_modbus_deserialize_raw_response	(	agile_modbus_t *	ctx,
		int	msg_length
	)

parses the original response data

Parameters

ctx	modbus handle
msg_length	received data length

Returns

>=0: The length of the corresponding function code response object (such as 03 function code, the value represents the number of registers); Others: exception (-1: message error; others: exception code can be obtained according to -128 -$return value)

Definition at line 1073 of file agile_modbus.c.

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