rs485isolator  2.0.0.0
rs485isolator.h
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1 /*
2  * MikroSDK - MikroE Software Development Kit
3  * Copyright© 2020 MikroElektronika d.o.o.
4  *
5  * Permission is hereby granted, free of charge, to any person
6  * obtaining a copy of this software and associated documentation
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9  * publish, distribute, sublicense, and/or sell copies of the Software,
10  * and to permit persons to whom the Software is furnished to do so,
11  * subject to the following conditions:
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14  * included in all copies or substantial portions of the Software.
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17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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24 
33 // ----------------------------------------------------------------------------
34 
35 #ifndef RS485ISOLATOR_H
36 #define RS485ISOLATOR_H
37 
38 #include "mikrosdk_version.h"
39 
40 #ifdef __GNUC__
41 #if mikroSDK_GET_VERSION < 20800ul
42 #include "rcu_delays.h"
43 #else
44 #include "delays.h"
45 #endif
46 #endif
47 
48 #include "drv_digital_out.h"
49 #include "drv_digital_in.h"
50 #include "drv_uart.h"
51 
52 // -------------------------------------------------------------- PUBLIC MACROS
62 #define RS485ISOLATOR_MAP_MIKROBUS( cfg, mikrobus ) \
63  cfg.tx_pin = MIKROBUS( mikrobus, MIKROBUS_TX ); \
64  cfg.rx_pin = MIKROBUS( mikrobus, MIKROBUS_RX ); \
65  cfg.re = MIKROBUS( mikrobus, MIKROBUS_RST ); \
66  cfg.de = MIKROBUS( mikrobus, MIKROBUS_CS )
67 
73 #define RS485ISOLATOR_OK 0
74 #define RS485ISOLATOR_ERROR -1
75 
81 #define RS485ISOLATOR_RECEIVER_ENABLE 0
82 #define RS485ISOLATOR_RECEIVER_DISABLE 1
83 
89 #define RS485ISOLATOR_DRIVER_ENABLE 1
90 #define RS485ISOLATOR_DRIVER_DISABLE 0
91 
97 #define RS485ISOLATOR_DRV_RX_BUFFER_SIZE 200
98 #define RS485ISOLATOR_DRV_TX_BUFFER_SIZE 200
99  // End group macro
102 // --------------------------------------------------------------- PUBLIC TYPES
110 typedef struct
111 {
112  // Output pins
113  digital_out_t re;
114  digital_out_t de;
115 
116  // Modules
117  uart_t uart;
118 
119  uint8_t uart_rx_buffer[ RS485ISOLATOR_DRV_RX_BUFFER_SIZE ];
120  uint8_t uart_tx_buffer[ RS485ISOLATOR_DRV_TX_BUFFER_SIZE ];
121 
123 
127 typedef struct
128 {
129  // Communication gpio pins
130  pin_name_t rx_pin;
131  pin_name_t tx_pin;
132 
133  // Additional gpio pins
134  pin_name_t re;
135  pin_name_t de;
136 
137  // static variable
138  uint32_t baud_rate; // Clock speed.
140  uart_data_bits_t data_bit; // Data bits.
141  uart_parity_t parity_bit; // Parity bit.
142  uart_stop_bits_t stop_bit; // Stop bits.
143 
145  // End types group
147 // ----------------------------------------------- PUBLIC FUNCTION DECLARATIONS
148 
154 #ifdef __cplusplus
155 extern "C"{
156 #endif
157 
167 
176 
183 void rs485isolator_generic_write ( rs485isolator_t *ctx, uint8_t *data_buf, uint16_t len );
184 
192 err_t rs485isolator_generic_read ( rs485isolator_t *ctx, uint8_t *data_buf, uint16_t max_len );
193 
201 
208 void rs485isolator_set_driver_mode ( rs485isolator_t *ctx, uint8_t state );
209 
210 #ifdef __cplusplus
211 }
212 #endif
213 #endif // _RS485ISOLATOR_H_
214  // End public_function group
217 
218 // ------------------------------------------------------------------------- END
rs485isolator_generic_write
void rs485isolator_generic_write(rs485isolator_t *ctx, uint8_t *data_buf, uint16_t len)
Generic write function.
RS485ISOLATOR_DRV_TX_BUFFER_SIZE
#define RS485ISOLATOR_DRV_TX_BUFFER_SIZE
Definition: rs485isolator.h:98
rs485isolator_cfg_t::uart_blocking
bool uart_blocking
Definition: rs485isolator.h:139
rs485isolator_cfg_t::baud_rate
uint32_t baud_rate
Definition: rs485isolator.h:138
rs485isolator_t::de
digital_out_t de
Definition: rs485isolator.h:114
rs485isolator_cfg_t::stop_bit
uart_stop_bits_t stop_bit
Definition: rs485isolator.h:142
rs485isolator_init
err_t rs485isolator_init(rs485isolator_t *ctx, rs485isolator_cfg_t *cfg)
Initialization function.
rs485isolator_cfg_t
Click configuration structure definition.
Definition: rs485isolator.h:128
rs485isolator_cfg_t::data_bit
uart_data_bits_t data_bit
Definition: rs485isolator.h:140
RS485ISOLATOR_DRV_RX_BUFFER_SIZE
#define RS485ISOLATOR_DRV_RX_BUFFER_SIZE
Definition: rs485isolator.h:97
rs485isolator_cfg_t::re
pin_name_t re
Definition: rs485isolator.h:134
rs485isolator_set_driver_mode
void rs485isolator_set_driver_mode(rs485isolator_t *ctx, uint8_t state)
Set driver state.
rs485isolator_cfg_t::de
pin_name_t de
Definition: rs485isolator.h:135
rs485isolator_set_receiver_mode
void rs485isolator_set_receiver_mode(rs485isolator_t *ctx, uint8_t state)
Set receiver state.
rs485isolator_t
Click ctx object definition.
Definition: rs485isolator.h:111
rs485isolator_cfg_t::parity_bit
uart_parity_t parity_bit
Definition: rs485isolator.h:141
rs485isolator_t::re
digital_out_t re
Definition: rs485isolator.h:113
rs485isolator_cfg_setup
void rs485isolator_cfg_setup(rs485isolator_cfg_t *cfg)
Config Object Initialization function.
rs485isolator_generic_read
err_t rs485isolator_generic_read(rs485isolator_t *ctx, uint8_t *data_buf, uint16_t max_len)
Generic read function.
rs485isolator_t::uart
uart_t uart
Definition: rs485isolator.h:117
rs485isolator_cfg_t::rx_pin
pin_name_t rx_pin
Definition: rs485isolator.h:130
rs485isolator_cfg_t::tx_pin
pin_name_t tx_pin
Definition: rs485isolator.h:131