c4x4key.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 C4X4KEY_H
#define C4X4KEY_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"
 
// -------------------------------------------------------------- PUBLIC MACROS 
#define C4X4KEY_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 )  
 
#define C4X4KEY_RETVAL  uint8_t
 
#define C4X4KEY_OK           0x00
#define C4X4KEY_INIT_ERROR   0xFF
 
// Button value
 
#define C4X4KEY_BUTTON_0          0xEFFF
#define C4X4KEY_BUTTON_1          0xFFFE
#define C4X4KEY_BUTTON_2          0xFFFD
#define C4X4KEY_BUTTON_3          0xFFFB
#define C4X4KEY_BUTTON_4          0xFFEF
#define C4X4KEY_BUTTON_5          0xFFDF
#define C4X4KEY_BUTTON_6          0xFFBF
#define C4X4KEY_BUTTON_7          0xFEFF
#define C4X4KEY_BUTTON_8          0xFDFF
#define C4X4KEY_BUTTON_9          0xFBFF
#define C4X4KEY_BUTTON_A          0xFFF7
#define C4X4KEY_BUTTON_B          0xFF7F
#define C4X4KEY_BUTTON_C          0xF7FF
#define C4X4KEY_BUTTON_D          0xBFFF
#define C4X4KEY_BUTTON_STAR       0x7FFF
#define C4X4KEY_BUTTON_HASH       0xDFFF
 
 
// Max 16-bit
 
#define C4X4KEY_MAX_16_BIT        0xFFFF
 // End group macro 
// --------------------------------------------------------------- PUBLIC TYPES
typedef struct
{  
    digital_out_t cs;
 
    // Modules 
 
    spi_master_t spi;
    pin_name_t chip_select;
 
} c4x4key_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;
 
} c4x4key_cfg_t;
 
 // End types group
// ----------------------------------------------- PUBLIC FUNCTION DECLARATIONS
 
#ifdef __cplusplus
extern "C"{
#endif
 
void c4x4key_cfg_setup ( c4x4key_cfg_t *cfg );
 
C4X4KEY_RETVAL c4x4key_init ( c4x4key_t *ctx, c4x4key_cfg_t *cfg );
 
void c4x4key_generic_transfer ( c4x4key_t *ctx, uint8_t *wr_buf, uint16_t wr_len, uint8_t *rd_buf, uint16_t rd_len );
 
uint16_t c4x4key_get_data ( c4x4key_t *ctx );
 
uint8_t c4x4key_get_btn_position ( c4x4key_t *ctx );
 
#ifdef __cplusplus
}
#endif
#endif  // _C4X4KEY_H_
 
 // End public_function group
 
// ------------------------------------------------------------------------- END