From 1702ce6ce430a66bb7af51644b91b7c196e719d9 Mon Sep 17 00:00:00 2001 From: Alexander Date: Wed, 29 Jun 2022 11:03:02 +0300 Subject: =?UTF-8?q?=D0=A1=D0=BE=D0=B7=D0=B4=D0=B0=D1=8E=20=D0=BD=D0=BE?= =?UTF-8?q?=D0=B2=D1=8B=D0=B9=20=D1=80=D0=B5=D0=BF=D0=BE=D0=B7=D0=B8=D1=82?= =?UTF-8?q?=D0=BE=D1=80=D0=B8=D0=B9.=20=D0=9F=D1=80=D0=BE=D0=B3=D1=80?= =?UTF-8?q?=D0=B0=D0=BC=D0=BC=D0=B0=20=D0=B4=D0=BB=D1=8F=20=D0=B2=D0=B5?= =?UTF-8?q?=D1=80=D1=81=D0=B8=D0=B8=20NixieClock=5Fv2.=20=D0=A0=D0=B0?= =?UTF-8?q?=D0=B1=D0=BE=D1=82=D0=B0=D0=B5=D1=82,=20=D1=87=D0=B0=D1=81?= =?UTF-8?q?=D1=8B=20=D1=82=D0=B8=D0=BA=D0=B0=D1=8E=D1=82.=20=D0=95=D1=81?= =?UTF-8?q?=D1=82=D1=8C=20=D0=BF=D1=80=D0=BE=D0=B1=D0=BB=D0=B5=D0=BC=D0=B0?= =?UTF-8?q?,=20=D1=87=D1=82=D0=BE=20=D1=81=D0=BA=D0=B0=D1=87=D0=B5=D1=82?= =?UTF-8?q?=20=D0=B2=D1=82=D0=BE=D1=80=D0=B0=D1=8F=20=D1=81=D0=B5=D0=BD?= =?UTF-8?q?=D0=BE=D1=81=D1=80=D0=BD=D0=B0=D1=8F=20=D0=BA=D0=BD=D0=BE=D0=BF?= =?UTF-8?q?=D0=BA=D0=B0=20(=D0=BE=D0=BD=D0=B0=20=D0=B2=20=D0=B4=D1=80?= =?UTF-8?q?=D1=83=D0=B3=D0=BE=D0=BC=20=D0=BA=D0=B0=D0=BD=D0=B0=D0=BB=D0=B5?= =?UTF-8?q?).=20=D0=9F=D0=BE=D1=8D=D1=82=D0=BE=D0=BC=D1=83=20=D0=BD=D0=B0?= =?UTF-8?q?=20=D0=BD=D0=B5=D0=B5=20=D1=81=D0=BE=D0=B1=D0=B8=D1=80=D0=B0?= =?UTF-8?q?=D1=8E=D1=81=D1=8C=20=D1=81=D0=B4=D0=B5=D0=BB=D0=B0=D1=82=D1=8C?= =?UTF-8?q?=20=D0=B0=D0=BD=D1=82=D0=B8=D0=B4=D1=80=D0=B5=D0=B1=D0=B5=D0=B7?= =?UTF-8?q?=D0=B3.?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../src/stm32f0xx_exti.c | 314 +++++++++++++++++++++ 1 file changed, 314 insertions(+) create mode 100644 Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_exti.c (limited to 'Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_exti.c') diff --git a/Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_exti.c b/Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_exti.c new file mode 100644 index 0000000..684a7de --- /dev/null +++ b/Libraries/STM32F0xx_StdPeriph_Driver/src/stm32f0xx_exti.c @@ -0,0 +1,314 @@ +/** + ****************************************************************************** + * @file stm32f0xx_exti.c + * @author MCD Application Team + * @version V1.3.0 + * @date 16-January-2014 + * @brief This file provides firmware functions to manage the following + * functionalities of the EXTI peripheral: + * + Initialization and Configuration + * + Interrupts and flags management + * + * @verbatim + ============================================================================== + ##### 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, not applicable for STM32F030 devices. + (#) EXTI line 17 is connected to the RTC Alarm event. + (#) EXTI line 18 is connected to the RTC Alarm event, applicable only for STM32F072 devices. + (#) EXTI line 19 is connected to the RTC Tamper and TimeStamp events. + (#) EXTI line 20 is connected to the RTC wakeup event, applicable only for STM32F072 devices. + (#) EXTI line 21 is connected to the Comparator 1 wakeup event, applicable only for STM32F051 and STM32F072 devices. + (#) EXTI line 22 is connected to the Comparator 2 wakeup event, applicable only for STM32F051 and STM32F072 devices. + (#) EXTI line 23 is connected to the I2C1 wakeup event, not applicable for STM32F030 devices. + (#) EXTI line 25 is connected to the USART1 wakeup event, not applicable for STM32F030 devices. + (#) EXTI line 26 is connected to the USART2 wakeup event, applicable only for STM32F072 devices. + (#) EXTI line 27 is connected to the CEC wakeup event, applicable only for STM32F051 and STM32F072 devices. + (#) EXTI line 31 is connected to the VDD USB monitor event, applicable only for STM32F072 devices. + + ##### 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); + @endverbatim + * + ****************************************************************************** + * @attention + * + *

© COPYRIGHT 2014 STMicroelectronics

+ * + * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); + * You may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.st.com/software_license_agreement_liberty_v2 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32f0xx_exti.h" + +/** @addtogroup STM32F0xx_StdPeriph_Driver + * @{ + */ + +/** @defgroup EXTI + * @brief EXTI driver modules + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +#define EXTI_LINENONE ((uint32_t)0x00000) /* No interrupt selected */ + +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** @defgroup EXTI_Private_Functions + * @{ + */ + +/** @defgroup EXTI_Group1 Initialization and Configuration functions + * @brief Initialization and Configuration functions + * +@verbatim + ============================================================================== + ##### Initialization and Configuration functions ##### + ============================================================================== + +@endverbatim + * @{ + */ + +/** + * @brief Deinitializes the EXTI peripheral registers to their default reset + * values. + * @param None + * @retval None + */ +void EXTI_DeInit(void) +{ + EXTI->IMR = 0x0F940000; + EXTI->EMR = 0x00000000; + EXTI->RTSR = 0x00000000; + EXTI->FTSR = 0x00000000; + EXTI->PR = 0x006BFFFF; +} + +/** + * @brief Initializes the EXTI peripheral according to the specified + * parameters in the EXTI_InitStruct. + * @param EXTI_InitStruct: pointer to a EXTI_InitTypeDef structure that + * contains the configuration information for the EXTI peripheral. + * @retval None + */ +void EXTI_Init(EXTI_InitTypeDef* EXTI_InitStruct) +{ + uint32_t tmp = 0; + + /* Check the parameters */ + assert_param(IS_EXTI_MODE(EXTI_InitStruct->EXTI_Mode)); + assert_param(IS_EXTI_TRIGGER(EXTI_InitStruct->EXTI_Trigger)); + assert_param(IS_EXTI_LINE(EXTI_InitStruct->EXTI_Line)); + assert_param(IS_FUNCTIONAL_STATE(EXTI_InitStruct->EXTI_LineCmd)); + + tmp = (uint32_t)EXTI_BASE; + + if (EXTI_InitStruct->EXTI_LineCmd != DISABLE) + { + /* Clear EXTI line configuration */ + EXTI->IMR &= ~EXTI_InitStruct->EXTI_Line; + EXTI->EMR &= ~EXTI_InitStruct->EXTI_Line; + + tmp += EXTI_InitStruct->EXTI_Mode; + + *(__IO uint32_t *) tmp |= EXTI_InitStruct->EXTI_Line; + + /* Clear Rising Falling edge configuration */ + EXTI->RTSR &= ~EXTI_InitStruct->EXTI_Line; + EXTI->FTSR &= ~EXTI_InitStruct->EXTI_Line; + + /* Select the trigger for the selected interrupts */ + if (EXTI_InitStruct->EXTI_Trigger == EXTI_Trigger_Rising_Falling) + { + /* Rising Falling edge */ + EXTI->RTSR |= EXTI_InitStruct->EXTI_Line; + EXTI->FTSR |= EXTI_InitStruct->EXTI_Line; + } + else + { + tmp = (uint32_t)EXTI_BASE; + tmp += EXTI_InitStruct->EXTI_Trigger; + + *(__IO uint32_t *) tmp |= EXTI_InitStruct->EXTI_Line; + } + } + else + { + tmp += EXTI_InitStruct->EXTI_Mode; + + /* Disable the selected external lines */ + *(__IO uint32_t *) tmp &= ~EXTI_InitStruct->EXTI_Line; + } +} + +/** + * @brief Fills each EXTI_InitStruct member with its reset value. + * @param EXTI_InitStruct: pointer to a EXTI_InitTypeDef structure which will + * be initialized. + * @retval None + */ +void EXTI_StructInit(EXTI_InitTypeDef* EXTI_InitStruct) +{ + EXTI_InitStruct->EXTI_Line = EXTI_LINENONE; + EXTI_InitStruct->EXTI_Mode = EXTI_Mode_Interrupt; + EXTI_InitStruct->EXTI_Trigger = EXTI_Trigger_Falling; + EXTI_InitStruct->EXTI_LineCmd = DISABLE; +} + +/** + * @brief Generates a Software interrupt on selected EXTI line. + * @param EXTI_Line: specifies the EXTI line on which the software interrupt + * will be generated. + * This parameter can be any combination of EXTI_Linex where x can be (0..27). + * @retval None + */ +void EXTI_GenerateSWInterrupt(uint32_t EXTI_Line) +{ + /* Check the parameters */ + assert_param(IS_EXTI_LINE(EXTI_Line)); + + EXTI->SWIER |= EXTI_Line; +} + +/** + * @} + */ + +/** @defgroup EXTI_Group2 Interrupts and flags management functions + * @brief Interrupts and flags management functions + * +@verbatim + ============================================================================== + ##### Interrupts and flags management functions ##### + ============================================================================== + +@endverbatim + * @{ + */ + +/** + * @brief Checks whether the specified EXTI line flag is set or not. + * @param EXTI_Line: specifies the EXTI line flag to check. + * This parameter can be EXTI_Linex where x can be (0..27). + * @retval The new state of EXTI_Line (SET or RESET). + */ +FlagStatus EXTI_GetFlagStatus(uint32_t EXTI_Line) +{ + FlagStatus bitstatus = RESET; + /* Check the parameters */ + assert_param(IS_GET_EXTI_LINE(EXTI_Line)); + + if ((EXTI->PR & EXTI_Line) != (uint32_t)RESET) + { + bitstatus = SET; + } + else + { + bitstatus = RESET; + } + return bitstatus; +} + +/** + * @brief Clears the EXTI's line pending flags. + * @param EXTI_Line: specifies the EXTI lines flags to clear. + * This parameter can be any combination of EXTI_Linex where x can be (0..27). + * @retval None + */ +void EXTI_ClearFlag(uint32_t EXTI_Line) +{ + /* Check the parameters */ + assert_param(IS_EXTI_LINE(EXTI_Line)); + + EXTI->PR = EXTI_Line; +} + +/** + * @brief Checks whether the specified EXTI line is asserted or not. + * @param EXTI_Line: specifies the EXTI line to check. + * This parameter can be EXTI_Linex where x can be (0..27). + * @retval The new state of EXTI_Line (SET or RESET). + */ +ITStatus EXTI_GetITStatus(uint32_t EXTI_Line) +{ + ITStatus bitstatus = RESET; + + /* Check the parameters */ + assert_param(IS_GET_EXTI_LINE(EXTI_Line)); + + if ((EXTI->PR & EXTI_Line) != (uint32_t)RESET) + { + bitstatus = SET; + } + else + { + bitstatus = RESET; + } + return bitstatus; +} + +/** + * @brief Clears the EXTI's line pending bits. + * @param EXTI_Line: specifies the EXTI lines to clear. + * This parameter can be any combination of EXTI_Linex where x can be (0..27). + * @retval None + */ +void EXTI_ClearITPendingBit(uint32_t EXTI_Line) +{ + /* Check the parameters */ + assert_param(IS_EXTI_LINE(EXTI_Line)); + + EXTI->PR = EXTI_Line; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ -- cgit v1.2.3