rs485isolator3.h

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/****************************************************************************
** Copyright (C) 2020 MikroElektronika d.o.o.
** Contact: https://www.mikroe.com/contact
**
** Permission is hereby granted, free of charge, to any person obtaining a copy
** of this software and associated documentation files (the "Software"), to deal
** in the Software without restriction, including without limitation the rights
** to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
** copies of the Software, and to permit persons to whom the Software is
** furnished to do so, subject to the following conditions:
** The above copyright notice and this permission notice shall be
** included in all copies or substantial portions of the Software.
**
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** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
** OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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#ifndef RS485ISOLATOR3_H
#define RS485ISOLATOR3_H
 
#ifdef __cplusplus
extern "C"{
#endif
 
#ifdef PREINIT_SUPPORTED
#include "preinit.h"
#endif
 
#ifdef MikroCCoreVersion
    #if MikroCCoreVersion >= 1
        #include "delays.h"
    #endif
#endif
 
#include "drv_digital_out.h"
#include "drv_digital_in.h"
#include "drv_uart.h"
 
#define RS485ISOLATOR3_TX_DRV_BUFFER_SIZE    100
#define RS485ISOLATOR3_RX_DRV_BUFFER_SIZE    300
 
 // rs485isolator3_cmd
 
#define RS485ISOLATOR3_MAP_MIKROBUS( cfg, mikrobus ) \
    cfg.tx_pin  = MIKROBUS( mikrobus, MIKROBUS_TX ); \
    cfg.rx_pin  = MIKROBUS( mikrobus, MIKROBUS_RX ); \
    cfg.re  = MIKROBUS( mikrobus, MIKROBUS_RST ); \
    cfg.de  = MIKROBUS( mikrobus, MIKROBUS_PWM ); \
    cfg.inv = MIKROBUS( mikrobus, MIKROBUS_INT );
 
 // rs485isolator3_map
 // rs485isolator3
 
typedef struct
{
    // Output pins
    digital_out_t re;   
    digital_out_t de;   
    digital_out_t inv;  
    // Modules
    uart_t uart;                                
    // Buffers
    char uart_rx_buffer[ RS485ISOLATOR3_RX_DRV_BUFFER_SIZE ];  
    char uart_tx_buffer[ RS485ISOLATOR3_TX_DRV_BUFFER_SIZE ];  
} rs485isolator3_t;
 
typedef struct
{
    // Communication gpio pins
    pin_name_t rx_pin;          
    pin_name_t tx_pin;          
    // Additional gpio pins
    pin_name_t re;              
    pin_name_t de;              
    pin_name_t inv;             
    // Static variable
    uint32_t         baud_rate;                 
    bool             uart_blocking;             
    uart_data_bits_t data_bit;                  
    uart_parity_t    parity_bit;                
    uart_stop_bits_t stop_bit;                  
} rs485isolator3_cfg_t;
 
typedef enum
{
    RS485ISOLATOR3_OK = 0,
    RS485ISOLATOR3_ERROR = -1
 
} rs485isolator3_return_value_t;
 
void rs485isolator3_cfg_setup ( rs485isolator3_cfg_t *cfg );
 
err_t rs485isolator3_init ( rs485isolator3_t *ctx, rs485isolator3_cfg_t *cfg );
 
void rs485isolator3_default_cfg ( rs485isolator3_t *ctx );
 
err_t rs485isolator3_generic_write ( rs485isolator3_t *ctx, char *data_in, uint16_t len );
 
err_t rs485isolator3_generic_read ( rs485isolator3_t *ctx, char *data_out, uint16_t len );
 
void rs485isolator3_enable_receiver_input ( rs485isolator3_t *ctx );
 
void rs485isolator3_disable_receiver_input ( rs485isolator3_t *ctx );
 
void rs485isolator3_enable_output ( rs485isolator3_t *ctx );
 
void rs485isolator3_disable_output ( rs485isolator3_t *ctx );
 
void rs485isolator3_inverted_inputs ( rs485isolator3_t *ctx );
 
void rs485isolator3_not_inverted_inputs ( rs485isolator3_t *ctx );
 
err_t rs485isolator3_send_bit_by_bit ( rs485isolator3_t *ctx, char *command );
 
#ifdef __cplusplus
}
#endif
#endif // RS485ISOLATOR3_H
 
 // rs485isolator3
 
// ------------------------------------------------------------------------ END