unleashed-firmware/firmware/targets/f7/furi_hal/furi_hal_ibutton.h

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/**
* @file furi_hal_ibutton.h
* iButton HAL API
*/
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#pragma once
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#include <stdbool.h>
#include <stdint.h>
#include <furi_hal_gpio.h>
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#ifdef __cplusplus
extern "C" {
#endif
typedef void (*FuriHalIbuttonEmulateCallback)(void* context);
/** Initialize */
void furi_hal_ibutton_init();
void furi_hal_ibutton_emulate_start(
uint32_t period,
FuriHalIbuttonEmulateCallback callback,
void* context);
void furi_hal_ibutton_emulate_set_next(uint32_t period);
void furi_hal_ibutton_emulate_stop();
/**
* Sets the pin to normal mode (open collector), and sets it to float
*/
void furi_hal_ibutton_start_drive();
/**
* Sets the pin to normal mode (open collector), and clears pin EXTI interrupt.
* Used in EXTI interrupt context.
*/
void furi_hal_ibutton_start_drive_in_isr();
/**
* Sets the pin to interrupt mode (EXTI interrupt on rise or fall), and sets it to float
*/
void furi_hal_ibutton_start_interrupt();
/**
* Sets the pin to interrupt mode (EXTI interrupt on rise or fall), and clears pin EXTI interrupt.
* Used in EXTI interrupt context.
*/
void furi_hal_ibutton_start_interrupt_in_isr();
/**
* Sets the pin to analog mode, and sets it to float
*/
void furi_hal_ibutton_stop();
/**
* Attach interrupt callback to iButton pin
* @param cb callback
* @param context context
*/
void furi_hal_ibutton_add_interrupt(GpioExtiCallback cb, void* context);
/**
* Remove interrupt callback from iButton pin
*/
void furi_hal_ibutton_remove_interrupt();
/**
* Sets the pin to low
*/
void furi_hal_ibutton_pin_low();
/**
* Sets the pin to high (float in iButton pin modes)
*/
void furi_hal_ibutton_pin_high();
/**
* Get pin level
* @return true if level is high
* @return false if level is low
*/
bool furi_hal_ibutton_pin_get_level();
/**
* Set the pin to normal mode (open collector), and sets it to float
*/
void furi_hal_ibutton_pin_configure();
/**
* Sets the pin to analog mode, and sets it to float
*/
void furi_hal_ibutton_pin_reset();
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/**
* iButton write pin
* @param state true / false
*/
void furi_hal_ibutton_pin_write(const bool state);
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#ifdef __cplusplus
}
#endif