Updated pheriph driver to 1.4
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t-moe
@@ -2,58 +2,64 @@
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******************************************************************************
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* @file stm32f4xx_exti.c
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* @author MCD Application Team
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* @version V1.0.0
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* @date 30-September-2011
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* @version V1.4.0
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* @date 04-August-2014
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* @brief This file provides firmware functions to manage the following
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* functionalities of the EXTI peripheral:
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* - Initialization and Configuration
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* - Interrupts and flags management
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* + Initialization and Configuration
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* + Interrupts and flags management
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*
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* @verbatim
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*
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* ===================================================================
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* EXTI features
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* ===================================================================
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*
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* External interrupt/event lines are mapped as following:
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* 1- All available GPIO pins are connected to the 16 external
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* interrupt/event lines from EXTI0 to EXTI15.
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* 2- EXTI line 16 is connected to the PVD Output
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* 3- EXTI line 17 is connected to the RTC Alarm event
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* 4- EXTI line 18 is connected to the USB OTG FS Wakeup from suspend event
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* 5- EXTI line 19 is connected to the Ethernet Wakeup event
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* 6- EXTI line 20 is connected to the USB OTG HS (configured in FS) Wakeup event
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* 7- EXTI line 21 is connected to the RTC Tamper and Time Stamp events
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* 8- EXTI line 22 is connected to the RTC Wakeup event
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*
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* ===================================================================
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* How to use this driver
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* ===================================================================
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*
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* In order to use an I/O pin as an external interrupt source, follow
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* steps below:
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* 1- Configure the I/O in input mode using GPIO_Init()
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* 2- Select the input source pin for the EXTI line using SYSCFG_EXTILineConfig()
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* 3- Select the mode(interrupt, event) and configure the trigger
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* selection (Rising, falling or both) using EXTI_Init()
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* 4- Configure NVIC IRQ channel mapped to the EXTI line using NVIC_Init()
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*
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* @note SYSCFG APB clock must be enabled to get write access to SYSCFG_EXTICRx
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* registers using RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
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*
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* @endverbatim
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@verbatim
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===============================================================================
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##### EXTI features #####
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===============================================================================
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[..] External interrupt/event lines are mapped as following:
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(#) All available GPIO pins are connected to the 16 external
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interrupt/event lines from EXTI0 to EXTI15.
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(#) EXTI line 16 is connected to the PVD Output
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(#) EXTI line 17 is connected to the RTC Alarm event
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(#) EXTI line 18 is connected to the USB OTG FS Wakeup from suspend event
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(#) EXTI line 19 is connected to the Ethernet Wakeup event
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(#) EXTI line 20 is connected to the USB OTG HS (configured in FS) Wakeup event
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(#) EXTI line 21 is connected to the RTC Tamper and Time Stamp events
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(#) EXTI line 22 is connected to the RTC Wakeup event
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##### How to use this driver #####
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===============================================================================
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[..] In order to use an I/O pin as an external interrupt source, follow steps
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below:
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(#) Configure the I/O in input mode using GPIO_Init()
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(#) Select the input source pin for the EXTI line using SYSCFG_EXTILineConfig()
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(#) Select the mode(interrupt, event) and configure the trigger
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selection (Rising, falling or both) using EXTI_Init()
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(#) Configure NVIC IRQ channel mapped to the EXTI line using NVIC_Init()
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[..]
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(@) SYSCFG APB clock must be enabled to get write access to SYSCFG_EXTICRx
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registers using RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
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@endverbatim
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*
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******************************************************************************
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* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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* <h2><center>© COPYRIGHT 2014 STMicroelectronics</center></h2>
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*
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* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/software_license_agreement_liberty_v2
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
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******************************************************************************
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*/
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@@ -88,8 +94,8 @@
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*
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@verbatim
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===============================================================================
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Initialization and Configuration functions
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===============================================================================
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##### Initialization and Configuration functions #####
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===============================================================================
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@endverbatim
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* @{
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@@ -204,8 +210,8 @@ void EXTI_GenerateSWInterrupt(uint32_t EXTI_Line)
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*
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@verbatim
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===============================================================================
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Interrupts and flags management functions
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===============================================================================
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##### Interrupts and flags management functions #####
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===============================================================================
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@endverbatim
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* @{
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@@ -256,13 +262,11 @@ void EXTI_ClearFlag(uint32_t EXTI_Line)
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*/
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ITStatus EXTI_GetITStatus(uint32_t EXTI_Line)
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{
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ITStatus bitstatus = RESET;
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uint32_t enablestatus = 0;
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FlagStatus bitstatus = RESET;
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/* Check the parameters */
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assert_param(IS_GET_EXTI_LINE(EXTI_Line));
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enablestatus = EXTI->IMR & EXTI_Line;
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if (((EXTI->PR & EXTI_Line) != (uint32_t)RESET) && (enablestatus != (uint32_t)RESET))
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if ((EXTI->PR & EXTI_Line) != (uint32_t)RESET)
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{
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bitstatus = SET;
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}
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@@ -271,6 +275,7 @@ ITStatus EXTI_GetITStatus(uint32_t EXTI_Line)
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bitstatus = RESET;
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}
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return bitstatus;
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}
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/**
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@@ -303,4 +308,4 @@ void EXTI_ClearITPendingBit(uint32_t EXTI_Line)
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* @}
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*/
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/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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