AN3128 datasheet(86/105 Pages) STMICROELECTRONICS

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Multi-input embedded GUI library firmware

AN3128

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Doc ID 16918 Rev 5

4.6.32

GL_JoyStickStateIOEXP HAL function

Table 71 describes the GL_JoyStickStateIOEXP function of the hardware abstraction layer.

4.6.33

GL_JoyStickStatePolling HAL function

The state acquisition of the joystick is implemented by reading the relative pins with a period

of 50 ms in order to easily recognize if one of the joystick commands has been activated for

a long period of time.

Table 72 describes the GL_JoyStickStatePolling function of the hardware abstraction layer.

Input parameter {x}

None

Output parameter {x}

None

Return value

None

Required preconditions None

Called functions

None

Table 70.

GL_JoyStickConfig_GPIO (continued)

Name

Description

Table 71.

GL_JoyStickStateIOEXP

Name

Description

Function name

GL_JoyStickStateIOEXP

Function prototype

uint32_t GL_JoyStickStateIOEXP(void)

Behavior description

Return the joystick status

Input parameter {x}

None

Output parameter {x}

None

Return value

The code of the joystick key pressed

Required preconditions None

Called functions

None

Table 72.

GL_JoyStickConfig_GPIO

Name

Description

Function name

GL_JoyStickStatePolling

Function prototype

uint32_t GL_JoyStickStatePolling (void)

Behavior description

Return the joystick status

Input parameter {x}

None

Output parameter {x}

None

Return value

The code of the joystick key pressed

Required preconditions None

Called functions

None

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