adc19.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 ADC19_H
#define ADC19_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_spi_master.h"
#include "spi_specifics.h"
 
#define ADC19_INPUT_CHANNEL_1                   1
#define ADC19_INPUT_CHANNEL_2                   2
 
#define ADC19_RESOLUTION_12BIT                  0x0FFF
#define ADC19_VREF_3V3                          3.3
#define ADC19_VREF_5V                           5.0
 
#define ADC19_SET_DATA_SAMPLE_EDGE              SET_SPI_DATA_SAMPLE_EDGE
#define ADC19_SET_DATA_SAMPLE_MIDDLE            SET_SPI_DATA_SAMPLE_MIDDLE
 
 // adc19_set
 
#define ADC19_MAP_MIKROBUS( cfg, mikrobus ) \
    cfg.miso = MIKROBUS( mikrobus, MIKROBUS_MISO ); \
    cfg.mosi = MIKROBUS( mikrobus, MIKROBUS_MOSI ); \
    cfg.sck  = MIKROBUS( mikrobus, MIKROBUS_SCK ); \
    cfg.cs   = MIKROBUS( mikrobus, MIKROBUS_CS );
 
 // adc19_map
 // adc19
 
typedef struct
{
    // Modules
    spi_master_t spi;                               
    pin_name_t   chip_select;                       
    float        vref;                              
} adc19_t;
 
typedef struct
{
    // Communication gpio pins
    pin_name_t  miso;                               
    pin_name_t  mosi;                               
    pin_name_t  sck;                                
    pin_name_t  cs;                                 
    // static variable
    uint32_t                           spi_speed;   
    spi_master_mode_t                  spi_mode;    
    spi_master_chip_select_polarity_t  cs_polarity; 
} adc19_cfg_t;
 
typedef enum
{
    ADC19_OK = 0,
    ADC19_ERROR = -1
 
} adc19_return_value_t;
 
void adc19_cfg_setup ( adc19_cfg_t *cfg );
 
err_t adc19_init ( adc19_t *ctx, adc19_cfg_t *cfg );
 
void adc19_set_vref ( adc19_t *ctx, float vref );
 
err_t adc19_set_input_channel ( adc19_t *ctx, uint8_t input_ch );
 
err_t adc19_get_voltage ( adc19_t *ctx, float *voltage );
 
#ifdef __cplusplus
}
#endif
#endif // ADC19_H
 
 // adc19
 
// ------------------------------------------------------------------------ END