Slave Operation Functions

Collaboration diagram for Slave Operation Functions:

Functions
int	agile_modbus_slave_handle (agile_modbus_t *ctx, int msg_length, uint8_t slave_strict, agile_modbus_slave_callback_t slave_cb, const void *slave_data, int *frame_length)
	slave data processing
void	agile_modbus_slave_io_set (uint8_t *buf, int index, int status)
	slave IO settings
uint8_t	agile_modbus_slave_io_get (uint8_t *buf, int index)
	Read slave IO status.
void	agile_modbus_slave_register_set (uint8_t *buf, int index, uint16_t data)
	slave register settings
uint16_t	agile_modbus_slave_register_get (uint8_t *buf, int index)
	Read slave register data.

Detailed Description

Function Documentation

agile_modbus_slave_handle()

int agile_modbus_slave_handle	(	agile_modbus_t *	ctx,
		int	msg_length,
		uint8_t	slave_strict,
		agile_modbus_slave_callback_t	slave_cb,
		const void *	slave_data,
		int *	frame_length
	)

slave data processing

Parameters

ctx	modbus handle
msg_length	received data length
slave_strict	slave address strict check flag 0: Do not compare slave addresses 1: Compare slave address
slave_cb	slave callback function
slave_data	slave callback function private data
frame_length	stores modbus data frame length

Returns

>=0: length of data to be responded to; others: exception

warning: comparison is always false due to limited range of data type [-Wtype-limits]

warning: comparison is always false due to limited range of data type [-Wtype-limits]

warning: comparison is always false due to limited range of data type [-Wtype-limits]

Definition at line 1203 of file agile_modbus.c.

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agile_modbus_slave_io_set()

void agile_modbus_slave_io_set	(	uint8_t *	buf,
		int	index,
		int	status
	)

slave IO settings

Parameters

buf	stores IO data area
index	IO index (number of IO)
status	IO status

Definition at line 1139 of file agile_modbus.c.

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agile_modbus_slave_io_get()

uint8_t agile_modbus_slave_io_get	(	uint8_t *	buf,
		int	index
	)

Read slave IO status.

Parameters

buf	IO data area
index	IO index (number of IO)

Returns

IO status (1/0)

Definition at line 1156 of file agile_modbus.c.

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agile_modbus_slave_register_set()

void agile_modbus_slave_register_set	(	uint8_t *	buf,
		int	index,
		uint16_t	data
	)

slave register settings

Parameters

buf	storage data area
index	register index (register number)
data	register data

Definition at line 1172 of file agile_modbus.c.

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agile_modbus_slave_register_get()

uint16_t agile_modbus_slave_register_get	(	uint8_t *	buf,
		int	index
	)

Read slave register data.

Parameters

buf	register data area
index	register index (register number)

Returns

register data

Definition at line 1184 of file agile_modbus.c.

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