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#ifndef STMOS_GPIO_H_
#define STMOS_GPIO_H_
#define GP(a) ((a - 'A') << 4)
/**
* Defines possible modes for a gpio pin.
*/
enum GPIO_MODE
{
INPUT = 0, /**< digital input */
OUTPUT, /**< digital output */
ALTERNATE, /**< alternate function */
ANALOG /**< analog function */
};
/**
* Defines whether to use push-pull or open drain.
*/
enum GPIO_TYPE
{
PUSHPULL = 0, /**< push-pull */
OPENDRAIN /**< open drain */
};
/**
* Defines the pin's speed
*/
enum GPIO_SPEED
{
LOW = 0, /**< low */
MEDIUM, /**< medium */
HIGH, /**< high */
VERYHIGH /**< very high/maximum */
};
/**
* Defines if a pullup or pulldown should be used.
*/
enum GPIO_PUPD
{
NOPUPD, /**< no pullup/pulldown */
PULLUP, /**< use pullup */
PULLDOWN /**< use pulldown */
};
typedef unsigned int gpio_pin_t;
void gpioMode(gpio_pin_t pin, int mode);
void gpioType(gpio_pin_t pin, int type);
void gpioPuPd(gpio_pin_t pin, int pupd);
void gpioSpeed(gpio_pin_t pin, int speed);
void gpioWrite(gpio_pin_t pin, int value);
int gpioRead(gpio_pin_t pin);
#endif // STMOS_GPIO_H_
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