buttonalarm.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 BUTTONALARM_H
#define BUTTONALARM_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_pwm.h"
 
#define BUTTONALARM_DEF_FREQ     500
 
 // buttonalarm_cfg
 
#define BUTTONALARM_MAP_MIKROBUS( cfg, mikrobus ) \
    cfg.pwm = MIKROBUS( mikrobus, MIKROBUS_PWM ); \
    cfg.int_pin = MIKROBUS( mikrobus, MIKROBUS_INT )
 
 // buttonalarm_map
 // buttonalarm
 
typedef struct
{
    digital_in_t int_pin;       
    // Modules
    pwm_t pwm;                  
    // ctx variable
    uint32_t pwm_freq;          
} buttonalarm_t;
 
typedef struct
{
    // Communication gpio pins
    pin_name_t pwm;          
    pin_name_t int_pin;      
    // Static variable
    uint32_t dev_pwm_freq;   
} buttonalarm_cfg_t;
 
typedef enum
{
   BUTTONALARM_OK = 0,
   BUTTONALARM_ERROR = -1
 
} buttonalarm_return_value_t;
 
void buttonalarm_cfg_setup ( buttonalarm_cfg_t *cfg );
 
err_t buttonalarm_init ( buttonalarm_t *ctx, buttonalarm_cfg_t *cfg );
 
err_t buttonalarm_set_duty_cycle ( buttonalarm_t *ctx, float duty_cycle );
 
err_t buttonalarm_pwm_stop ( buttonalarm_t *ctx );
 
err_t buttonalarm_pwm_start ( buttonalarm_t *ctx );
 
uint8_t buttonalarm_get_button_state ( buttonalarm_t *ctx );
 
#ifdef __cplusplus
}
#endif
#endif // BUTTONALARM_H
 
 // buttonalarm
 
// ------------------------------------------------------------------------ END