thumbstick.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 THUMBSTICK_H
#define THUMBSTICK_H
 
#ifdef PREINIT_SUPPORTED
#include "preinit.h"
#endif
 
#ifdef MikroCCoreVersion
    #if MikroCCoreVersion >= 1
        #include "delays.h"
    #endif
#endif
 
#include "drv_digital_in.h"
#include "drv_spi_master.h"
 
// -------------------------------------------------------------- PUBLIC MACROS 
#define THUMBSTICK_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.int_pin = MIKROBUS( mikrobus, MIKROBUS_INT );
#define THUMBSTICK_RETVAL  uint8_t
 
#define THUMBSTICK_OK                       0x00
#define THUMBSTICK_INIT_ERROR               0xFF
#define THUMBSTICK_FUNCTION_ERROR           0xEE
#define THUMBSTICK_START_SINGLE_CONV        0x06
#define THUMBSTICK_START_DIFF_CONV          0x04
#define THUMBSTICK_VERTICAL                 0x00
#define THUMBSTICK_HORIZONTAL               0x60
#define THUMBSTICK_POSITION_DEFAULT         0x01
#define THUMBSTICK_POSITION_TOP             0x02
#define THUMBSTICK_POSITION_RIGHT           0x03
#define THUMBSTICK_POSITION_BOTTOM          0x04
#define THUMBSTICK_POSITION_LEFT            0x05
#define THUMBSTICK_BUTTON_INACTIVE          0x00
#define THUMBSTICK_BUTTON_ACTIVE            0x01
#define POSTION_SENS_DEFAULT    500
#define THUMBSTICK_PRESS_BUTTON 0x00
 // End group macro 
// --------------------------------------------------------------- PUBLIC TYPES
typedef struct
{
    digital_out_t cs;
 
    // Input pins 
 
    digital_in_t int_pin;
    
    // Modules 
 
    spi_master_t spi;
    pin_name_t chip_select;
 
} thumbstick_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 int_pin;
 
    // static variable 
 
    uint32_t spi_speed;
    spi_master_mode_t spi_mode;
    spi_master_chip_select_polarity_t cs_polarity;
 
} thumbstick_cfg_t;
 
typedef struct
{
    uint8_t vertical;
    uint8_t horizontal;
 
} thumbstick_position_t;
 
 // End types group
 
// ----------------------------------------------- PUBLIC FUNCTION DECLARATIONS
 
#ifdef __cplusplus
extern "C"{
#endif
 
void thumbstick_cfg_setup ( thumbstick_cfg_t *cfg );
 
THUMBSTICK_RETVAL thumbstick_init ( thumbstick_t *ctx, thumbstick_cfg_t *cfg );
 
void thumbstick_generic_transfer 
( 
    thumbstick_t *ctx, 
    uint8_t *wr_buf, 
    uint16_t wr_len, 
    uint8_t *rd_buf, 
    uint16_t rd_len 
);
 
uint16_t thumbstick_read_rawadc ( thumbstick_t *ctx, uint8_t type, uint8_t channel );
 
uint8_t thumbstick_get_single_axis_postion ( thumbstick_t *ctx, uint8_t axis );
 
void thumbstick_get_position ( thumbstick_t *ctx, thumbstick_position_t *position );
 
uint8_t thumbstick_button_state( thumbstick_t *ctx );
 
 
uint8_t thumbstick_set_sensitivity ( uint16_t sensitivity );
 
 
#ifdef __cplusplus
}
#endif
#endif  // _THUMBSTICK_H_
 
 // End public_function group
 
// ------------------------------------------------------------------------- END