modbus.h File Reference

#include <drivers/uart.h>

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Data Structures
struct	modbus_adu
	Frame struct used internally and for raw ADU support. More...
struct	modbus_user_callbacks
struct	modbus_serial_param
	Modbus serial line parameter. More...
struct	modbus_server_param
	Modbus server parameter. More...
struct	modbus_iface_param
	User parameter structure to configure Modbus interfase as client or server. More...

Macros
#define	MODBUS_MBAP_LENGTH   7
#define	MODBUS_MBAP_AND_FC_LENGTH   (MODBUS_MBAP_LENGTH + 1)

Typedefs
typedef int(*	modbus_raw_cb_t) (const int iface, const struct modbus_adu *adu)
	ADU raw callback function signature. More...

Enumerations
enum	modbus_mode { MODBUS_MODE_RTU , MODBUS_MODE_ASCII , MODBUS_MODE_RAW }
	Modbus interface mode. More...

Functions
int	modbus_read_coils (const int iface, const uint8_t unit_id, const uint16_t start_addr, uint8_t *const coil_tbl, const uint16_t num_coils)
	Coil read (FC01) More...
int	modbus_read_dinputs (const int iface, const uint8_t unit_id, const uint16_t start_addr, uint8_t *const di_tbl, const uint16_t num_di)
	Read discrete inputs (FC02) More...
int	modbus_read_holding_regs (const int iface, const uint8_t unit_id, const uint16_t start_addr, uint16_t *const reg_buf, const uint16_t num_regs)
	Read holding registers (FC03) More...
int	modbus_read_input_regs (const int iface, const uint8_t unit_id, const uint16_t start_addr, uint16_t *const reg_buf, const uint16_t num_regs)
	Read input registers (FC04) More...
int	modbus_write_coil (const int iface, const uint8_t unit_id, const uint16_t coil_addr, const bool coil_state)
	Write single coil (FC05) More...
int	modbus_write_holding_reg (const int iface, const uint8_t unit_id, const uint16_t start_addr, const uint16_t reg_val)
	Write single holding register (FC06) More...
int	modbus_request_diagnostic (const int iface, const uint8_t unit_id, const uint16_t sfunc, const uint16_t data, uint16_t *const data_out)
	Read diagnostic (FC08) More...
int	modbus_write_coils (const int iface, const uint8_t unit_id, const uint16_t start_addr, uint8_t *const coil_tbl, const uint16_t num_coils)
	Write coils (FC15) More...
int	modbus_write_holding_regs (const int iface, const uint8_t unit_id, const uint16_t start_addr, uint16_t *const reg_buf, const uint16_t num_regs)
	Write holding registers (FC16) More...
int	modbus_read_holding_regs_fp (const int iface, const uint8_t unit_id, const uint16_t start_addr, float *const reg_buf, const uint16_t num_regs)
	Read floating-point holding registers (FC03) More...
int	modbus_write_holding_regs_fp (const int iface, const uint8_t unit_id, const uint16_t start_addr, float *const reg_buf, const uint16_t num_regs)
	Write floating-point holding registers (FC16) More...
int	modbus_iface_get_by_name (const char *iface_name)
	Get Modbus interface index according to interface name. More...
int	modbus_init_server (const int iface, struct modbus_iface_param param)
	Configure Modbus Interface as raw ADU server. More...
int	modbus_init_client (const int iface, struct modbus_iface_param param)
	Configure Modbus Interface as raw ADU client. More...
int	modbus_disable (const uint8_t iface)
	Disable Modbus Interface. More...
int	modbus_raw_submit_rx (const int iface, const struct modbus_adu *adu)
	Submit raw ADU. More...
void	modbus_raw_put_header (const struct modbus_adu *adu, uint8_t *header)
	Put MBAP header into a buffer. More...
void	modbus_raw_get_header (struct modbus_adu *adu, const uint8_t *header)
	Get MBAP header from a buffer. More...
void	modbus_raw_set_server_failure (struct modbus_adu *adu)
	Set Server Device Failure exception. More...
int	modbus_raw_backend_txn (const int iface, struct modbus_adu *adu)
	Use interface as backend to send and receive ADU. More...