ST STM32F2 - Hal_Gpio_Exti_Callback; Hal_Gpio_Exti_Irqhandler; Hal_Gpio_Lockpin; Hal_Gpio_Togglepin

HAL GPIO Generic Driver
UM1940
262/1371
DocID028236 Rev 2
PinState: specifies the value to be written to the selected bit.
This parameter can be one of the GPIO_PinState enum
values:
GPIO_PIN_RESET: to clear the port pin
GPIO_PIN_SET: to set the port pin
Return values
None:
Notes
This function uses GPIOx_BSRR register to allow atomic
read/modify accesses. In this way, there is no risk of an IRQ
occurring between the read and the modify access.
HAL_GPIO_TogglePin
Function name
void HAL_GPIO_TogglePin (GPIO_TypeDef * GPIOx, uint16_t
GPIO_Pin)
Function description
Toggles the specified GPIO pins.
Parameters
GPIOx: where x can be (A..I) to select the GPIO peripheral.
GPIO_Pin: Specifies the pins to be toggled.
Return values
None:
HAL_GPIO_LockPin
Function name
HAL_StatusTypeDef HAL_GPIO_LockPin (GPIO_TypeDef *
GPIOx, uint16_t GPIO_Pin)
Function description
Locks GPIO Pins configuration registers.
Parameters
GPIOx: where x can be (A..I) to select the GPIO peripheral
for STM32F2XX family
GPIO_Pin: specifies the port bit to be locked. This parameter
can be any combination of GPIO_PIN_x where x can be
(0..15).
Return values
None:
Notes
The locked registers are GPIOx_MODER, GPIOx_OTYPER,
GPIOx_OSPEEDR, GPIOx_PUPDR, GPIOx_AFRL and
GPIOx_AFRH.
The configuration of the locked GPIO pins can no longer be
modified until the next reset.
HAL_GPIO_EXTI_IRQHandler
Function name
void HAL_GPIO_EXTI_IRQHandler (uint16_t GPIO_Pin)
Function description
This function handles EXTI interrupt request.
Parameters
GPIO_Pin: Specifies the pins connected EXTI line
Return values
None:
HAL_GPIO_EXTI_Callback
Function name
void HAL_GPIO_EXTI_Callback (uint16_t GPIO_Pin)
Function description
EXTI line detection callbacks.