gainamp2.h

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/*
 * MikroSDK - MikroE Software Development Kit
 * Copyright© 2020 MikroElektronika d.o.o.
 * 
 * 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 GAINAMP2_H
#define GAINAMP2_H
 
#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 "drv_analog_in.h"
 
// -------------------------------------------------------------- PUBLIC MACROS 
#define GAINAMP2_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 ); \
   cfg.vout    = MIKROBUS( mikrobus, MIKROBUS_AN )
#define GAINAMP2_RETVAL  uint8_t
 
#define GAINAMP2_OK           0x00
#define GAINAMP2_INIT_ERROR   0xFF
#define  GAINAMP2_NOP_INS        0x00 
#define  GAINAMP2_SHUTDOWN_INS   0x20 
#define  GAINAMP2_WRITE_INS      0x40 
#define  GAINAMP2_CH             0x01
#define  GAINAMP2_GAIN           0x00
#define  GAINAMP2_GAIN_1X        0x00
#define  GAINAMP2_GAIN_2X        0x01
#define  GAINAMP2_GAIN_4X        0x02
#define  GAINAMP2_GAIN_5X        0x03
#define  GAINAMP2_GAIN_8X        0x04
#define  GAINAMP2_GAIN_10X       0x05
#define  GAINAMP2_GAIN_16X       0x06
#define  GAINAMP2_GAIN_32X       0x07
#define  GAINAMP2_CH0            0x00
#define  GAINAMP2_CH1            0x01
#define  GAINAMP2_CH2            0x02
#define  GAINAMP2_CH3            0x03
#define  GAINAMP2_CH4            0x04
#define  GAINAMP2_CH5            0x05
 // End group macro 
// --------------------------------------------------------------- PUBLIC TYPES
typedef struct
{
    // Output pins
 
    digital_out_t cs;
    
    // Modules 
 
    spi_master_t spi;
    pin_name_t chip_select;
    analog_in_t  adc;  
    
    float vref; 
 
} gainamp2_t;
 
typedef struct
{
    // Communication gpio pins 
 
    pin_name_t miso;
    pin_name_t mosi;
    pin_name_t sck;
    pin_name_t cs;
 
    // Additional gpio pins 
 
    pin_name_t vout;
 
    // static variable 
 
    analog_in_resolution_t  resolution;    
    float  vref;                          
    uint32_t spi_speed;
    spi_master_mode_t   spi_mode;
    spi_master_chip_select_polarity_t cs_polarity;
 
} gainamp2_cfg_t;
 
 // End types group
 
// ----------------------------------------------- PUBLIC FUNCTION DECLARATIONS
 
#ifdef __cplusplus
extern "C"{
#endif
 
void gainamp2_cfg_setup ( gainamp2_cfg_t *cfg );
 
GAINAMP2_RETVAL gainamp2_init ( gainamp2_t *ctx, gainamp2_cfg_t *cfg );
 
void gainamp2_generic_transfer ( gainamp2_t *ctx, uint8_t *wr_buf, uint16_t wr_len, uint8_t *rd_buf,  uint16_t rd_len );
 
void gainamp2_write_command( gainamp2_t *ctx, uint8_t instruction, uint8_t input );
 
void gainamp2_set_channel_gain ( gainamp2_t *ctx, uint8_t channel, uint8_t gain );
 
float gainamp2_get_voltage ( gainamp2_t *ctx );
 
#ifdef __cplusplus
}
#endif
#endif  // _GAINAMP2_H_
 
 // End public_function group
 
// ------------------------------------------------------------------------- END