canbus.h

Go to the documentation of this file.

/****************************************************************************
** 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.
**
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
** OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
** DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT
** OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
**  USE OR OTHER DEALINGS IN THE SOFTWARE.
****************************************************************************/
 
#ifndef CANBUS_H
#define CANBUS_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 DRV_BUFFER_SIZE                       200
 
 // canbus_set
 
#define CANBUS_MAP_MIKROBUS( cfg, mikrobus )         \
    cfg.tx_pin  = MIKROBUS( mikrobus, MIKROBUS_TX ); \
    cfg.rx_pin  = MIKROBUS( mikrobus, MIKROBUS_RX ); \
    cfg.stb = MIKROBUS( mikrobus, MIKROBUS_AN )
 
 // canbus_map
 // canbus
 
typedef struct
{
    // Output pins
 
    digital_out_t stb;                       
    // Modules
 
    uart_t uart;                             
    // Buffers
 
    char uart_rx_buffer[ DRV_BUFFER_SIZE ];  
    char uart_tx_buffer[ DRV_BUFFER_SIZE ];  
} canbus_t;
 
typedef struct
{
    // Communication gpio pins
 
    pin_name_t rx_pin;                       
    pin_name_t tx_pin;                       
    // Additional gpio pins
 
    pin_name_t stb;                          
    // 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;              
} canbus_cfg_t;
 
typedef enum
{
   CANBUS_OK = 0,
   CANBUS_ERROR = -1
 
} canbus_return_value_t;
 
void canbus_cfg_setup ( canbus_cfg_t *cfg );
 
err_t canbus_init ( canbus_t *ctx, canbus_cfg_t *cfg );
 
err_t canbus_default_cfg ( canbus_t *ctx );
 
err_t canbus_generic_write ( canbus_t *ctx, char *data_buf, uint16_t len );
 
err_t canbus_generic_read ( canbus_t *ctx, char *data_buf, uint16_t max_len );
 
err_t canbus_set_low_current_standby_mode ( canbus_t *ctx );
 
err_t canbus_set_high_speed_mode ( canbus_t *ctx );
 
err_t canbus_send_data ( canbus_t *ctx, char *tx_data );
 
#ifdef __cplusplus
}
#endif
#endif // CANBUS_H
 
 // canbus
 
// ------------------------------------------------------------------------ END