GPIO_Driver.h

#ifndef GPIO_Driver
#define GPIO_Driver

#include "stm32f10x.h"
#include <stdint.h>

//STATES
#define LOW 0
#define HIGH 1

//PORT NAMES
#define PORTA           GPIOA
#define PORTB           GPIOB
#define PORTC           GPIOC
#define PORTD           GPIOD
#define PORTE           GPIOE
#define PORTF           GPIOF
#define PORTG           GPIOG

//PIN MODES
#define OUTPUT                              ((int32_t)0x01)
#define INPUT                                   ((uint32_t)0x00)

//INPUT TYPES
#define INPUT_ANALOG                        ((uint32_t)0x00)
#define INPUT_FLOATING                  ((uint32_t)0x01)
#define INPUT_PU_PD                         ((uint32_t)0x02)

//OUTPUT TYPES
#define OUTPUT_GEN_PURPOSE          ((uint32_t)0x00)
#define OUTPUT_OD                       ((uint32_t)0x01)
#define OUTPUT_ALT_FUNCTION         ((uint32_t)0x02)
#define OUTPUT_ALT_FUNCTION_OD  ((uint32_t)0x03)

//PIN speed/slew rates
#define SPEED_2MHZ                      ((uint32_t)0x02)
#define SPEED_10MHZ                     ((uint32_t)0x01)
#define SPEED_50MHZ                     ((uint32_t)0x03)

//CLOCK enables
#define CLOCK_GPIO_EN_ALT_FUNC      (RCC->APB2ENR |= (1<<0))
#define CLOCK_GPIO_EN_PORTA         (RCC->APB2ENR |= (1<<2))
#define CLOCK_GPIO_EN_PORTB         (RCC->APB2ENR |= (1<<3))
#define CLOCK_GPIO_EN_PORTC         (RCC->APB2ENR |= (1<<4))
#define CLOCK_GPIO_EN_PORTD         (RCC->APB2ENR |= (1<<5))

//CONFIG REG CNF AND MODE
#define MODE_POS_BIT1       (PINPOS[pinNumber])
#define MODE_POS_BIT2           (PINPOS[pinNumber] + 1)
#define CNF_POS_BIT1            (PINPOS[pinNumber] + 2)
#define CNF_POS_BIT2            (PINPOS[pinNumber] + 3)

//CONFIG STRUCT
typedef struct
{
    GPIO_TypeDef *port;
    uint32_t pin;
    uint32_t mode;
    uint32_t mode_type;
    uint32_t pull;
    uint32_t speed;
    uint32_t alt;
}   GPIO_TYPE;

//EDGE ENUM
typedef enum
{
    RISING_EDGE,
    FALLING_EDGE,
    RISING_FALLING_EDGE,
}edge_select;

//FUNCTION PROTOTYPES

//====================================
//       GPIO CONFIGURATIONS
//====================================

void config_pin(GPIO_TypeDef *port, uint32_t pinNumber, uint32_t modeType, uint32_t pinSpeed, uint32_t mode);
void init_gpio(GPIO_TYPE gpio_type);

//=====================================
//         GPIO COMMANDS
//=====================================

void pin_write(GPIO_TypeDef *port, uint32_t pinNumber, uint32_t state);
void pin_toggle(GPIO_TypeDef *port, uint32_t pinNumber);
uint32_t pin_read(GPIO_TypeDef *port, uint32_t pinNumber);

//=====================================
//      GPIO INTERRUPT COMMANDS
//=====================================

void config_gpio_interrupt(GPIO_TypeDef *port, uint32_t pinNumber, edge_select edge);
void enable_gpio_interrupt(uint32_t pinNumber, IRQn_Type irqNumber);
void clear_gpio_interrupt(uint32_t pinNumber);

//=====================================
//        SLEEP FUNCTIONS
//=====================================

void goToSleep(void);


#endif