STM32F0xx_Nucleo BSP User Manual: BUTTON Functions

STM32F0xx Nucleo

STM32F0xx_Nucleo BSP User Manual
BUTTON Functions

Functions

void BSP_PB_Init (Button_TypeDef Button, ButtonMode_TypeDef ButtonMode)
 Configures Button GPIO and EXTI Line.
void BSP_PB_DeInit (Button_TypeDef Button)
 Push Button DeInit.
uint32_t BSP_PB_GetState (Button_TypeDef Button)
 Returns the selected Button state.
uint8_t BSP_JOY_Init (void)
 Configures joystick available on adafruit 1.8" TFT shield managed through ADC to detect motion.
JOYState_TypeDef BSP_JOY_GetState (void)
 Returns the Joystick key pressed.
void BSP_JOY_DeInit (void)
 DeInit joystick GPIOs.

Function Documentation

void BSP_JOY_DeInit ( void  )

DeInit joystick GPIOs.

Note:
JOY DeInit does not disable the Mfx, just set the Mfx pins in Off mode
Return values:
None.

Definition at line 856 of file stm32f0xx_nucleo.c.

References ADCx_DeInit().

Returns 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 873 of file stm32f0xx_nucleo.c.

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

uint8_t BSP_JOY_Init ( void  )

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

Return values:
Joystickstatus(0=> success, 1=> fail)

Definition at line 836 of file stm32f0xx_nucleo.c.

References ADCx_Init(), hnucleo_Adc, and sConfig.

void BSP_PB_DeInit ( Button_TypeDef  Button)

Push Button DeInit.

Parameters:
Button,:Button to be configured This parameter should be: BUTTON_USER
Note:
PB DeInit does not disable the GPIO clock
Return values:
None

Definition at line 299 of file stm32f0xx_nucleo.c.

References BUTTON_IRQn, BUTTON_PIN, and BUTTON_PORT.

uint32_t BSP_PB_GetState ( Button_TypeDef  Button)

Returns the selected Button state.

Parameters:
Button,:Specifies the Button to be checked. This parameter should be: BUTTON_USER
Return values:
Buttonstate.

Definition at line 314 of file stm32f0xx_nucleo.c.

References BUTTON_PIN, and BUTTON_PORT.

void BSP_PB_Init ( Button_TypeDef  Button,
ButtonMode_TypeDef  ButtonMode 
)

Configures 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 260 of file stm32f0xx_nucleo.c.

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

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