STM32F0 Standard Peripheral bibliotheek
1.0
ST Microelectronics standard peripheral bibliotheek documentatie voor de STM32F0 familie
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This file provides firmware functions to manage the following functionalities of the EXTI peripheral: More...
#include "stm32f0xx_exti.h"
Macros | |
#define | EXTI_LINENONE ((uint32_t)0x00000) /* No interrupt selected */ |
Functions | |
void | EXTI_DeInit (void) |
Deinitializes the EXTI peripheral registers to their default reset values. More... | |
void | EXTI_Init (EXTI_InitTypeDef *EXTI_InitStruct) |
Initializes the EXTI peripheral according to the specified parameters in the EXTI_InitStruct. More... | |
void | EXTI_StructInit (EXTI_InitTypeDef *EXTI_InitStruct) |
Fills each EXTI_InitStruct member with its reset value. More... | |
void | EXTI_GenerateSWInterrupt (uint32_t EXTI_Line) |
Generates a Software interrupt on selected EXTI line. More... | |
FlagStatus | EXTI_GetFlagStatus (uint32_t EXTI_Line) |
Checks whether the specified EXTI line flag is set or not. More... | |
void | EXTI_ClearFlag (uint32_t EXTI_Line) |
Clears the EXTI's line pending flags. More... | |
ITStatus | EXTI_GetITStatus (uint32_t EXTI_Line) |
Checks whether the specified EXTI line is asserted or not. More... | |
void | EXTI_ClearITPendingBit (uint32_t EXTI_Line) |
Clears the EXTI's line pending bits. More... | |
This file provides firmware functions to manage the following functionalities of the EXTI peripheral:
============================================================================== ##### EXTI features ##### ============================================================================== [..] External interrupt/event lines are mapped as following: (#) All available GPIO pins are connected to the 16 external interrupt/event lines from EXTI0 to EXTI15. (#) EXTI line 16 is connected to the PVD output. (#) EXTI line 17 is connected to the RTC Alarm event. (#) EXTI line 19 is connected to the RTC Tamper and TimeStamp events (#) EXTI line 21 is connected to the Comparator 1 wakeup event (#) EXTI line 22 is connected to the Comparator 2 wakeup event (#) EXTI line 23 is connected to the I2C1 wakeup event (#) EXTI line 25 is connected to the USART1 wakeup event (#) EXTI line 27 is connected to the CEC wakeup event ##### How to use this driver ##### ============================================================================== [..] In order to use an I/O pin as an external interrupt source, follow steps below: (#) Configure the I/O in input mode using GPIO_Init() (#) Select the input source pin for the EXTI line using SYSCFG_EXTILineConfig(). (#) Select the mode(interrupt, event) and configure the trigger selection (Rising, falling or both) using EXTI_Init(). For the internal interrupt, the trigger selection is not needed( the active edge is always the rising one). (#) Configure NVIC IRQ channel mapped to the EXTI line using NVIC_Init(). (#) Optionally, you can generate a software interrupt using the function EXTI_GenerateSWInterrupt(). [..] (@) SYSCFG APB clock must be enabled to get write access to SYSCFG_EXTICRx registers using RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
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