PetitModbus.h

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#ifndef __PETITMODBUS__H
#define __PETITMODBUS__H
 
// Petit Modbus Port Header
#include "PetitModbusPort.h"
 
 
// Buffers for Petit Modbus RTU Slave
// sized to hold a write to all registers
// +2 address; +2 number of registers; +1 number of bytes to follow; +2 CRC16
// +1 slave address; +1 function
#define PETITMODBUS_RXTX_BUFFER_SIZE  (2*(NUMBER_OF_REGISTERS_IN_BUFFER) + 9)
 
#if PETIT_CRC == PETIT_CRC_TABULAR
extern PETIT_CODE const short PetitCRCtable[];
#endif
 
typedef enum
{
    PETIT_RXTX_RX = 0,
    PETIT_RXTX_PROCESS,
    PETIT_RXTX_TX_DATABUF,
    PETIT_RXTX_TX_DLY,
    PETIT_RXTX_TX,
    PETIT_RXTX_TIMEOUT
}  PETIT_RXTX_STATE;
 
extern PETIT_RXTX_STATE Petit_RxTx_State;
 
// Main Functions
extern void                  ProcessPetitModbus(void);
 
#endif