joystick.c File Reference

Implementation of joystick handling module (STM32 HAL). More...

#include "joystick.h"

Include dependency graph for joystick.c:

Macros
#define	JOYSTICK_TH_LOW   100
#define	JOYSTICK_TH_HIGH   3900

Functions
void	joystick_init (ADC_HandleTypeDef *adc_handler)
	Initializes joystick handling by passing given ADC handler and starting ADC.
vec2_t	joystick_read (void)
	Reads current joystick position from ADC.
bool	joystick_check_tilt (void)
	Checks if joystick is tilted past the defined dead zone.
direction_t	joystick_get_direction (void)
	interprets current joystick state as one of 4 directions or NONE.

Detailed Description

Implementation of joystick handling module (STM32 HAL).

Author

bslrd

Date

2026

SPDX-License-Identifier: MIT

Macro Definition Documentation

JOYSTICK_TH_HIGH

#define JOYSTICK_TH_HIGH   3900

JOYSTICK_TH_LOW

#define JOYSTICK_TH_LOW   100

Function Documentation

joystick_check_tilt()

bool joystick_check_tilt

(

void

)

Checks if joystick is tilted past the defined dead zone.

Returns

returns true if joystick is outside the deadzone and false otherwise

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joystick_get_direction()

direction_t joystick_get_direction

(

void

)

interprets current joystick state as one of 4 directions or NONE.

Returns

direction type value.

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joystick_init()

void joystick_init

(

ADC_HandleTypeDef *

adc_handler

)

Initializes joystick handling by passing given ADC handler and starting ADC.

Parameters

adc_handler

pointer to ADC handler of choice.

Note

Should be called from main() before use of other joystick functions

joystick_read()

vec2_t joystick_read

(

void

)

Reads current joystick position from ADC.

Parameters

adc_handler

pointer to ADC handler of choice.

Returns

vec2_t type vector with vec.x and vec.y values of joystick position.