slave_func.impl.h File Reference

Slave's functions for parsing requests (implementation) More...

#include "slave_func.h"
#include "slave.h"

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Functions
ModbusErrorInfo	modbusParseRequest01020304 (ModbusSlave *status, uint8_t function, const uint8_t *requestPDU, uint8_t requestLength)
	Handles requests 01, 02, 03 and 04 (Read Multiple XX) and generates response.
ModbusErrorInfo	modbusParseRequest0506 (ModbusSlave *status, uint8_t function, const uint8_t *requestPDU, uint8_t requestLength)
	Handles requests 05 and 06 (Write Single XX) and generates response.
ModbusErrorInfo	modbusParseRequest1516 (ModbusSlave *status, uint8_t function, const uint8_t *requestPDU, uint8_t requestLength)
	Handles requests 15 and 16 (Write Multiple XX) and generates response.
ModbusErrorInfo	modbusParseRequest22 (ModbusSlave *status, uint8_t function, const uint8_t *requestPDU, uint8_t requestLength)
	Handles request 22 (Mask Write Register) and generates response.

Detailed Description

Slave's functions for parsing requests (implementation)

Function Documentation

modbusParseRequest01020304()

ModbusErrorInfo modbusParseRequest01020304	(	ModbusSlave *	status,
		uint8_t	function,
		const uint8_t *	requestPDU,
		uint8_t	requestLength
	)

Handles requests 01, 02, 03 and 04 (Read Multiple XX) and generates response.

Parameters

function	function code
requestPDU	pointer to the PDU section of the request
requestLength	length of the PDU section in bytes

Returns

MODBUS_GENERAL_ERROR(ALLOC) on memory allocation error

MODBUS_GENERAL_ERROR(FUNCTION) if function is not 1, 2, 3 or 4

MODBUS_NO_ERROR() on success

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modbusParseRequest0506()

ModbusErrorInfo modbusParseRequest0506	(	ModbusSlave *	status,
		uint8_t	function,
		const uint8_t *	requestPDU,
		uint8_t	requestLength
	)

Handles requests 05 and 06 (Write Single XX) and generates response.

Parameters

function	function code
requestPDU	pointer to the PDU section of the request
requestLength	length of the PDU section in bytes

Returns

MODBUS_GENERAL_ERROR(ALLOC) on memory allocation error

MODBUS_NO_ERROR() on success

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modbusParseRequest1516()

ModbusErrorInfo modbusParseRequest1516	(	ModbusSlave *	status,
		uint8_t	function,
		const uint8_t *	requestPDU,
		uint8_t	requestLength
	)

Handles requests 15 and 16 (Write Multiple XX) and generates response.

Parameters

function	function code
requestPDU	pointer to the PDU section of the request
requestLength	length of the PDU section in bytes

Returns

MODBUS_GENERAL_ERROR(ALLOC) on memory allocation error

MODBUS_NO_ERROR() on success

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modbusParseRequest22()

ModbusErrorInfo modbusParseRequest22	(	ModbusSlave *	status,
		uint8_t	function,
		const uint8_t *	requestPDU,
		uint8_t	requestLength
	)

Handles request 22 (Mask Write Register) and generates response.

Parameters

function	function code
requestPDU	pointer to the PDU section of the request
requestLength	length of the PDU section in bytes

Returns

MODBUS_GENERAL_ERROR(ALLOC) on memory allocation error

MODBUS_NO_ERROR() on success

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