gsm.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.
**
** 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 GSM_H
#define GSM_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 GSM_CMD_AT                          "AT"
#define GSM_CMD_ATI                         "ATI"
#define GSM_CMD_CFUN                        "AT+CFUN"
#define GSM_CMD_CREG                        "AT+CREG"
#define GSM_CMD_CGDCONT                     "AT+CGDCONT"
#define GSM_CMD_CSQ                         "AT+CSQ"
#define GSM_CMD_COPS                        "AT+COPS"
#define GSM_CMD_CMGS                        "AT+CMGS"
#define GSM_CMD_CMGF                        "AT+CMGF"
#define GSM_CMD_SGACT                       "AT#SGACT"
#define GSM_CMD_SD                          "AT#SD"
#define GSM_CMD_SH                          "AT#SH"
#define GSM_CMD_SSEND                       "AT#SSEND"
#define GSM_CMD_SRECV                       "AT#SRECV"
 
#define GSM_RSP_OK                          "OK"
#define GSM_RSP_ERROR                       "ERROR"
 
#define GSM_RX_DRV_BUFFER_SIZE              256
#define GSM_TX_DRV_BUFFER_SIZE              256
 
 // gsm_set
 
#define GSM_MAP_MIKROBUS( cfg, mikrobus ) \
    cfg.tx_pin  = MIKROBUS( mikrobus, MIKROBUS_TX ); \
    cfg.rx_pin  = MIKROBUS( mikrobus, MIKROBUS_RX ); \
    cfg.pwr = MIKROBUS( mikrobus, MIKROBUS_AN ); \
    cfg.rst = MIKROBUS( mikrobus, MIKROBUS_RST ); \
    cfg.rts = MIKROBUS( mikrobus, MIKROBUS_CS ); \
    cfg.gp2 = MIKROBUS( mikrobus, MIKROBUS_PWM ); \
    cfg.cts = MIKROBUS( mikrobus, MIKROBUS_INT )
 
 // gsm_map
 // gsm
 
typedef struct
{
    // Output pins
    digital_out_t rst;      
    digital_out_t rts;      
    // Input pins
    digital_in_t pwr;       
    digital_in_t gp2;       
    digital_in_t cts;       
    // Modules
    uart_t uart;            
    // Buffers
    uint8_t uart_rx_buffer[ GSM_RX_DRV_BUFFER_SIZE ];   
    uint8_t uart_tx_buffer[ GSM_TX_DRV_BUFFER_SIZE ];   
} gsm_t;
 
typedef struct
{
    // Communication gpio pins
    pin_name_t rx_pin;      
    pin_name_t tx_pin;      
    // Additional gpio pins
    pin_name_t pwr;         
    pin_name_t rst;         
    pin_name_t rts;         
    pin_name_t gp2;         
    pin_name_t cts;         
    // 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;         
} gsm_cfg_t;
 
typedef enum
{
    GSM_OK = 0,
    GSM_ERROR = -1,
    GSM_ERROR_TIMEOUT = -2,
    GSM_ERROR_CMD = -3,
    GSM_ERROR_UNKNOWN = -4
 
} gsm_return_value_t;
 
void gsm_cfg_setup ( gsm_cfg_t *cfg );
 
err_t gsm_init ( gsm_t *ctx, gsm_cfg_t *cfg );
 
err_t gsm_generic_write ( gsm_t *ctx, uint8_t *data_in, uint16_t len );
 
err_t gsm_generic_read ( gsm_t *ctx, uint8_t *data_out, uint16_t len );
 
void gsm_set_rts_pin ( gsm_t *ctx, uint8_t state );
 
void gsm_set_rst_pin ( gsm_t *ctx, uint8_t state );
 
uint8_t gsm_get_cts_pin ( gsm_t *ctx );
 
uint8_t gsm_get_pwr_pin ( gsm_t *ctx );
 
uint8_t gsm_get_gp2_pin ( gsm_t *ctx );
 
void gsm_send_cmd ( gsm_t *ctx, uint8_t *cmd );
 
void gsm_send_cmd_with_par ( gsm_t *ctx, uint8_t *at_cmd_buf, uint8_t *param_buf );
 
void gsm_send_cmd_check ( gsm_t *ctx, uint8_t *at_cmd_buf );
 
void gsm_send_cmd_par_check ( gsm_t *ctx, uint8_t *at_cmd_buf );
 
void gsm_set_sim_apn ( gsm_t *ctx, uint8_t *sim_apn );
 
void gsm_send_sms_text ( gsm_t *ctx, uint8_t *phone_number, uint8_t *sms_text );
 
err_t gsm_send_sms_pdu ( gsm_t *ctx, uint8_t *service_center_number, uint8_t *phone_number, uint8_t *sms_text );
 
#ifdef __cplusplus
}
#endif
#endif // GSM_H
 
 // gsm
 
// ------------------------------------------------------------------------ END