STM32L4xx_Nucleo_144 BSP User Manual: BUTTON Functions

DeInitialize joystick GPIOs.

Return values:

None.

Definition at line 372 of file stm32l4xx_nucleo_144.c.

References ADCx_DeInit().

Return the Joystick key pressed.

Note:

To know which Joystick key is pressed we need to detect the voltage level on each key output

• None : 3.3 V / 4095
• SEL : 1.055 V / 1308
• DOWN : 0.71 V / 88
• LEFT : 3.0 V / 3720
• RIGHT : 0.595 V / 737
• UP : 1.65 V / 2046

Return values:

JOYState_TypeDef,:

Code of the Joystick key pressed.

Definition at line 389 of file stm32l4xx_nucleo_144.c.

References hnucleo_Adc, JOY_DOWN, JOY_LEFT, JOY_NONE, JOY_RIGHT, JOY_SEL, and JOY_UP.

Configure joystick available on adafruit 1.8" TFT shield managed through ADC to detect motion.

Return values:

Joystickstatus

(0=> success, 1=> fail)

Definition at line 352 of file stm32l4xx_nucleo_144.c.

References ADCx_Init(), hnucleo_Adc, NUCLEO_ADCx_CHANNEL, NUCLEO_ADCx_SAMPLETIME, and sConfig.

DeInitialize Push Button.

Parameters:

Button,:

Button to be configured This parameter should be: BUTTON_USER

Note:

BSP_PB_DeInit() does not disable the GPIO clock

Return values:

None

Definition at line 326 of file stm32l4xx_nucleo_144.c.

References BUTTON_IRQn, BUTTON_PIN, and BUTTON_PORT.

Return the selected Button state.

Parameters:

Button,:

Specifies the Button to be checked. This parameter should be: BUTTON_USER

Return values:

The	Button GPIO pin value.

Definition at line 341 of file stm32l4xx_nucleo_144.c.

References BUTTON_PIN, and BUTTON_PORT.

Configure Button GPIO and EXTI Line.

Parameters:

Button,:	Specifies the Button to be configured. This parameter should be: BUTTON_USER
ButtonMode,:	Specifies Button mode. This parameter can be one of following parameters: BUTTON_MODE_GPIO: Button will be used as simple IO BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt generation capability

Return values:

None

Definition at line 289 of file stm32l4xx_nucleo_144.c.

References BUTTON_IRQn, BUTTON_MODE_EXTI, BUTTON_MODE_GPIO, BUTTON_PIN, BUTTON_PORT, and BUTTONx_GPIO_CLK_ENABLE.