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#ifndef GPIO_H
#define GPIO_H
#include "types.h"
/**
* The signal level of a GPIO line.
*/
enum gpio_level {
LOW = 0,
HIGH = 1,
};
/**
* The availables GPIO pins on the NRF82832.
*/
enum gpio_pin {
PIN_0 = 0,
PIN_1 = 1,
PIN_2 = 2,
PIN_3 = 3,
PIN_4 = 4,
PIN_5 = 5,
PIN_6 = 6,
PIN_7 = 7,
PIN_8 = 8,
PIN_9 = 9,
PIN_10 = 10,
PIN_11 = 11,
PIN_12 = 12,
PIN_13 = 13,
PIN_14 = 14,
PIN_15 = 15,
PIN_16 = 16,
PIN_17 = 17,
PIN_18 = 18,
PIN_19 = 19,
PIN_20 = 20,
PIN_21 = 21,
PIN_22 = 22,
PIN_23 = 23,
PIN_24 = 24,
PIN_25 = 25,
PIN_26 = 26,
PIN_27 = 27,
PIN_28 = 28,
PIN_29 = 29,
PIN_30 = 30,
PIN_31 = 31,
};
/**
* The pull configuration for a GPIO line.
*/
enum gpio_pull_configuration {
/** Keep the GPIO in a floating state when the circuit is open */
NO_PULL = 0,
/** Force the signal to the `LOW` level when the circuit is open */
PULL_DOWN = 1,
/** Force the signal to the `HIGH` level when the circuit is open */
PULL_UP = 3,
};
/**
* The drive configuration for a GPIO line.
*/
enum gpio_drive_configuration {
/** Standard 0, Standard 1 */
S0S1 = 0,
/** High drive 0, Standard 1 */
H0S1 = 1,
/** Standard 0, High drive 1 */
S0H1 = 2,
/** High drive 0, High Drive 1 */
H0H1 = 3,
/** Disconnect 0, Standard 1 */
D0S1 = 4,
/** Disconnect 0, High drive 1 */
D0H1 = 5,
/** Standard 0, Disconnect 1 */
S0D1 = 6,
/** High drive 0, Disconnect 1 */
H0D1 = 7,
};
/**
* Init the given pin as an input.
*/
void gpio_input_pin_init(enum gpio_pin pin, enum gpio_pull_configuration pull_config, enum gpio_level sensibility);
/**
* Init the given pin as output.
*/
void gpio_output_pin_init(enum gpio_pin pin, enum gpio_drive_configuration drive_config);
/**
* Disable a GPIO pin.
*/
u8 gpio_pin_disable(enum gpio_pin pin);
/**
* Read the current signal level of the given GPIO pin.
*/
enum gpio_level gpio_pin_get_level(enum gpio_pin pin);
/**
* Set the given GPIO pin to the given level.
*/
void gpio_pin_set_level(enum gpio_pin pin, enum gpio_level level);
#endif
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