tm_stm32f4_keypad.h

#ifndef TM_KEYPAD_H
#define TM_KEYPAD_H 200

/* C++ detection */
#ifdef __cplusplus
extern C {
#endif

#include "stm32f4xx.h"
#include "defines.h"
#include "tm_stm32f4_gpio.h"


/* Rows */
/* Row 1 default */
#ifndef KEYPAD_ROW_1_PIN
#define KEYPAD_ROW_1_PORT           GPIOC
#define KEYPAD_ROW_1_PIN            GPIO_PIN_1
#endif
/* Row 2 default */
#ifndef KEYPAD_ROW_2_PIN
#define KEYPAD_ROW_2_PORT           GPIOC
#define KEYPAD_ROW_2_PIN            GPIO_PIN_2
#endif
/* Row 3 default */
#ifndef KEYPAD_ROW_3_PIN
#define KEYPAD_ROW_3_PORT           GPIOC
#define KEYPAD_ROW_3_PIN            GPIO_PIN_3
#endif
/* Row 4 default */
#ifndef KEYPAD_ROW_4_PIN
#define KEYPAD_ROW_4_PORT           GPIOC
#define KEYPAD_ROW_4_PIN            GPIO_PIN_5
#endif

/* Columns */
/* Column 1 default */
#ifndef KEYPAD_COLUMN_1_PIN
#define KEYPAD_COLUMN_1_PORT        GPIOD
#define KEYPAD_COLUMN_1_PIN         GPIO_PIN_0
#endif
/* Column 2 default */
#ifndef KEYPAD_COLUMN_2_PIN
#define KEYPAD_COLUMN_2_PORT        GPIOD
#define KEYPAD_COLUMN_2_PIN         GPIO_PIN_1
#endif
/* Column 3 default */
#ifndef KEYPAD_COLUMN_3_PIN
#define KEYPAD_COLUMN_3_PORT        GPIOD
#define KEYPAD_COLUMN_3_PIN         GPIO_PIN_2
#endif
/* Column 4 default */
#ifndef KEYPAD_COLUMN_4_PIN
#define KEYPAD_COLUMN_4_PORT        GPIOD
#define KEYPAD_COLUMN_4_PIN         GPIO_PIN_3
#endif

/* Number of milliseconds between 2 reads */
#ifndef KEYPAD_READ_INTERVAL
#define KEYPAD_READ_INTERVAL        100
#endif

/* Keypad no pressed */
#define KEYPAD_NO_PRESSED           (uint8_t)0xFF

typedef enum {
    TM_KEYPAD_Button_0 = 0x00,                     
    TM_KEYPAD_Button_1 = 0x01,                     
    TM_KEYPAD_Button_2 = 0x02,                     
    TM_KEYPAD_Button_3 = 0x03,                     
    TM_KEYPAD_Button_4 = 0x04,                     
    TM_KEYPAD_Button_5 = 0x05,                     
    TM_KEYPAD_Button_6 = 0x06,                     
    TM_KEYPAD_Button_7 = 0x07,                     
    TM_KEYPAD_Button_8 = 0x08,                     
    TM_KEYPAD_Button_9 = 0x09,                     
    TM_KEYPAD_Button_STAR = 0x0A,                  
    TM_KEYPAD_Button_HASH = 0x0B,                  
    TM_KEYPAD_Button_A = 0x0C,                     
    TM_KEYPAD_Button_B = 0x0D,                     
    TM_KEYPAD_Button_C = 0x0E,                     
    TM_KEYPAD_Button_D = 0x0F,                     
    TM_KEYPAD_Button_NOPRESSED = KEYPAD_NO_PRESSED 
} TM_KEYPAD_Button_t;

typedef enum {
    TM_KEYPAD_Type_Large = 0x00, 
    TM_KEYPAD_Type_Small         
} TM_KEYPAD_Type_t;

void TM_KEYPAD_Init(TM_KEYPAD_Type_t type);

TM_KEYPAD_Button_t TM_KEYPAD_Read(void);

void TM_KEYPAD_Update(void);

/* C++ detection */
#ifdef __cplusplus
}
#endif

#endif