Gan likun / mbed1-dev

001

targets/TARGET_STM/TARGET_STM32F4/device/stm32f4xx_hal_gpio.c@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:13413ea9a877 1 /**
ganlikun 0:13413ea9a877 2 ******************************************************************************
ganlikun 0:13413ea9a877 3 * @file stm32f4xx_hal_gpio.c
ganlikun 0:13413ea9a877 4 * @author MCD Application Team
ganlikun 0:13413ea9a877 5 * @version V1.7.1
ganlikun 0:13413ea9a877 6 * @date 14-April-2017
ganlikun 0:13413ea9a877 7 * @brief GPIO HAL module driver.
ganlikun 0:13413ea9a877 8 * This file provides firmware functions to manage the following
ganlikun 0:13413ea9a877 9 * functionalities of the General Purpose Input/Output (GPIO) peripheral:
ganlikun 0:13413ea9a877 10 * + Initialization and de-initialization functions
ganlikun 0:13413ea9a877 11 * + IO operation functions
ganlikun 0:13413ea9a877 12 *
ganlikun 0:13413ea9a877 13 @verbatim
ganlikun 0:13413ea9a877 14 ==============================================================================
ganlikun 0:13413ea9a877 15 ##### GPIO Peripheral features #####
ganlikun 0:13413ea9a877 16 ==============================================================================
ganlikun 0:13413ea9a877 17 [..]
ganlikun 0:13413ea9a877 18 Subject to the specific hardware characteristics of each I/O port listed in the datasheet, each
ganlikun 0:13413ea9a877 19 port bit of the General Purpose IO (GPIO) Ports, can be individually configured by software
ganlikun 0:13413ea9a877 20 in several modes:
ganlikun 0:13413ea9a877 21 (+) Input mode
ganlikun 0:13413ea9a877 22 (+) Analog mode
ganlikun 0:13413ea9a877 23 (+) Output mode
ganlikun 0:13413ea9a877 24 (+) Alternate function mode
ganlikun 0:13413ea9a877 25 (+) External interrupt/event lines
ganlikun 0:13413ea9a877 26
ganlikun 0:13413ea9a877 27 [..]
ganlikun 0:13413ea9a877 28 During and just after reset, the alternate functions and external interrupt
ganlikun 0:13413ea9a877 29 lines are not active and the I/O ports are configured in input floating mode.
ganlikun 0:13413ea9a877 30
ganlikun 0:13413ea9a877 31 [..]
ganlikun 0:13413ea9a877 32 All GPIO pins have weak internal pull-up and pull-down resistors, which can be
ganlikun 0:13413ea9a877 33 activated or not.
ganlikun 0:13413ea9a877 34
ganlikun 0:13413ea9a877 35 [..]
ganlikun 0:13413ea9a877 36 In Output or Alternate mode, each IO can be configured on open-drain or push-pull
ganlikun 0:13413ea9a877 37 type and the IO speed can be selected depending on the VDD value.
ganlikun 0:13413ea9a877 38
ganlikun 0:13413ea9a877 39 [..]
ganlikun 0:13413ea9a877 40 All ports have external interrupt/event capability. To use external interrupt
ganlikun 0:13413ea9a877 41 lines, the port must be configured in input mode. All available GPIO pins are
ganlikun 0:13413ea9a877 42 connected to the 16 external interrupt/event lines from EXTI0 to EXTI15.
ganlikun 0:13413ea9a877 43
ganlikun 0:13413ea9a877 44 [..]
ganlikun 0:13413ea9a877 45 The external interrupt/event controller consists of up to 23 edge detectors
ganlikun 0:13413ea9a877 46 (16 lines are connected to GPIO) for generating event/interrupt requests (each
ganlikun 0:13413ea9a877 47 input line can be independently configured to select the type (interrupt or event)
ganlikun 0:13413ea9a877 48 and the corresponding trigger event (rising or falling or both). Each line can
ganlikun 0:13413ea9a877 49 also be masked independently.
ganlikun 0:13413ea9a877 50
ganlikun 0:13413ea9a877 51 ##### How to use this driver #####
ganlikun 0:13413ea9a877 52 ==============================================================================
ganlikun 0:13413ea9a877 53 [..]
ganlikun 0:13413ea9a877 54 (#) Enable the GPIO AHB clock using the following function: __HAL_RCC_GPIOx_CLK_ENABLE().
ganlikun 0:13413ea9a877 55
ganlikun 0:13413ea9a877 56 (#) Configure the GPIO pin(s) using HAL_GPIO_Init().
ganlikun 0:13413ea9a877 57 (++) Configure the IO mode using "Mode" member from GPIO_InitTypeDef structure
ganlikun 0:13413ea9a877 58 (++) Activate Pull-up, Pull-down resistor using "Pull" member from GPIO_InitTypeDef
ganlikun 0:13413ea9a877 59 structure.
ganlikun 0:13413ea9a877 60 (++) In case of Output or alternate function mode selection: the speed is
ganlikun 0:13413ea9a877 61 configured through "Speed" member from GPIO_InitTypeDef structure.
ganlikun 0:13413ea9a877 62 (++) In alternate mode is selection, the alternate function connected to the IO
ganlikun 0:13413ea9a877 63 is configured through "Alternate" member from GPIO_InitTypeDef structure.
ganlikun 0:13413ea9a877 64 (++) Analog mode is required when a pin is to be used as ADC channel
ganlikun 0:13413ea9a877 65 or DAC output.
ganlikun 0:13413ea9a877 66 (++) In case of external interrupt/event selection the "Mode" member from
ganlikun 0:13413ea9a877 67 GPIO_InitTypeDef structure select the type (interrupt or event) and
ganlikun 0:13413ea9a877 68 the corresponding trigger event (rising or falling or both).
ganlikun 0:13413ea9a877 69
ganlikun 0:13413ea9a877 70 (#) In case of external interrupt/event mode selection, configure NVIC IRQ priority
ganlikun 0:13413ea9a877 71 mapped to the EXTI line using HAL_NVIC_SetPriority() and enable it using
ganlikun 0:13413ea9a877 72 HAL_NVIC_EnableIRQ().
ganlikun 0:13413ea9a877 73
ganlikun 0:13413ea9a877 74 (#) To get the level of a pin configured in input mode use HAL_GPIO_ReadPin().
ganlikun 0:13413ea9a877 75
ganlikun 0:13413ea9a877 76 (#) To set/reset the level of a pin configured in output mode use
ganlikun 0:13413ea9a877 77 HAL_GPIO_WritePin()/HAL_GPIO_TogglePin().
ganlikun 0:13413ea9a877 78
ganlikun 0:13413ea9a877 79 (#) To lock pin configuration until next reset use HAL_GPIO_LockPin().
ganlikun 0:13413ea9a877 80
ganlikun 0:13413ea9a877 81
ganlikun 0:13413ea9a877 82 (#) During and just after reset, the alternate functions are not
ganlikun 0:13413ea9a877 83 active and the GPIO pins are configured in input floating mode (except JTAG
ganlikun 0:13413ea9a877 84 pins).
ganlikun 0:13413ea9a877 85
ganlikun 0:13413ea9a877 86 (#) The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as general purpose
ganlikun 0:13413ea9a877 87 (PC14 and PC15, respectively) when the LSE oscillator is off. The LSE has
ganlikun 0:13413ea9a877 88 priority over the GPIO function.
ganlikun 0:13413ea9a877 89
ganlikun 0:13413ea9a877 90 (#) The HSE oscillator pins OSC_IN/OSC_OUT can be used as
ganlikun 0:13413ea9a877 91 general purpose PH0 and PH1, respectively, when the HSE oscillator is off.
ganlikun 0:13413ea9a877 92 The HSE has priority over the GPIO function.
ganlikun 0:13413ea9a877 93
ganlikun 0:13413ea9a877 94 @endverbatim
ganlikun 0:13413ea9a877 95 ******************************************************************************
ganlikun 0:13413ea9a877 96 * @attention
ganlikun 0:13413ea9a877 97 *
ganlikun 0:13413ea9a877 98 * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
ganlikun 0:13413ea9a877 99 *
ganlikun 0:13413ea9a877 100 * Redistribution and use in source and binary forms, with or without modification,
ganlikun 0:13413ea9a877 101 * are permitted provided that the following conditions are met:
ganlikun 0:13413ea9a877 102 * 1. Redistributions of source code must retain the above copyright notice,
ganlikun 0:13413ea9a877 103 * this list of conditions and the following disclaimer.
ganlikun 0:13413ea9a877 104 * 2. Redistributions in binary form must reproduce the above copyright notice,
ganlikun 0:13413ea9a877 105 * this list of conditions and the following disclaimer in the documentation
ganlikun 0:13413ea9a877 106 * and/or other materials provided with the distribution.
ganlikun 0:13413ea9a877 107 * 3. Neither the name of STMicroelectronics nor the names of its contributors
ganlikun 0:13413ea9a877 108 * may be used to endorse or promote products derived from this software
ganlikun 0:13413ea9a877 109 * without specific prior written permission.
ganlikun 0:13413ea9a877 110 *
ganlikun 0:13413ea9a877 111 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
ganlikun 0:13413ea9a877 112 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
ganlikun 0:13413ea9a877 113 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
ganlikun 0:13413ea9a877 114 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
ganlikun 0:13413ea9a877 115 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
ganlikun 0:13413ea9a877 116 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
ganlikun 0:13413ea9a877 117 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
ganlikun 0:13413ea9a877 118 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
ganlikun 0:13413ea9a877 119 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
ganlikun 0:13413ea9a877 120 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
ganlikun 0:13413ea9a877 121 *
ganlikun 0:13413ea9a877 122 ******************************************************************************
ganlikun 0:13413ea9a877 123 */
ganlikun 0:13413ea9a877 124
ganlikun 0:13413ea9a877 125 /* Includes ------------------------------------------------------------------*/
ganlikun 0:13413ea9a877 126 #include "stm32f4xx_hal.h"
ganlikun 0:13413ea9a877 127
ganlikun 0:13413ea9a877 128 /** @addtogroup STM32F4xx_HAL_Driver
ganlikun 0:13413ea9a877 129 * @{
ganlikun 0:13413ea9a877 130 */
ganlikun 0:13413ea9a877 131
ganlikun 0:13413ea9a877 132 /** @defgroup GPIO GPIO
ganlikun 0:13413ea9a877 133 * @brief GPIO HAL module driver
ganlikun 0:13413ea9a877 134 * @{
ganlikun 0:13413ea9a877 135 */
ganlikun 0:13413ea9a877 136
ganlikun 0:13413ea9a877 137 #ifdef HAL_GPIO_MODULE_ENABLED
ganlikun 0:13413ea9a877 138
ganlikun 0:13413ea9a877 139 /* Private typedef -----------------------------------------------------------*/
ganlikun 0:13413ea9a877 140 /* Private define ------------------------------------------------------------*/
ganlikun 0:13413ea9a877 141 /** @addtogroup GPIO_Private_Constants GPIO Private Constants
ganlikun 0:13413ea9a877 142 * @{
ganlikun 0:13413ea9a877 143 */
ganlikun 0:13413ea9a877 144 #define GPIO_MODE 0x00000003U
ganlikun 0:13413ea9a877 145 #define EXTI_MODE 0x10000000U
ganlikun 0:13413ea9a877 146 #define GPIO_MODE_IT 0x00010000U
ganlikun 0:13413ea9a877 147 #define GPIO_MODE_EVT 0x00020000U
ganlikun 0:13413ea9a877 148 #define RISING_EDGE 0x00100000U
ganlikun 0:13413ea9a877 149 #define FALLING_EDGE 0x00200000U
ganlikun 0:13413ea9a877 150 #define GPIO_OUTPUT_TYPE 0x00000010U
ganlikun 0:13413ea9a877 151
ganlikun 0:13413ea9a877 152 #define GPIO_NUMBER 16U
ganlikun 0:13413ea9a877 153 /**
ganlikun 0:13413ea9a877 154 * @}
ganlikun 0:13413ea9a877 155 */
ganlikun 0:13413ea9a877 156 /* Private macro -------------------------------------------------------------*/
ganlikun 0:13413ea9a877 157 /* Private variables ---------------------------------------------------------*/
ganlikun 0:13413ea9a877 158 /* Private function prototypes -----------------------------------------------*/
ganlikun 0:13413ea9a877 159 /* Private functions ---------------------------------------------------------*/
ganlikun 0:13413ea9a877 160 /* Exported functions --------------------------------------------------------*/
ganlikun 0:13413ea9a877 161 /** @defgroup GPIO_Exported_Functions GPIO Exported Functions
ganlikun 0:13413ea9a877 162 * @{
ganlikun 0:13413ea9a877 163 */
ganlikun 0:13413ea9a877 164
ganlikun 0:13413ea9a877 165 /** @defgroup GPIO_Exported_Functions_Group1 Initialization and de-initialization functions
ganlikun 0:13413ea9a877 166 * @brief Initialization and Configuration functions
ganlikun 0:13413ea9a877 167 *
ganlikun 0:13413ea9a877 168 @verbatim
ganlikun 0:13413ea9a877 169 ===============================================================================
ganlikun 0:13413ea9a877 170 ##### Initialization and de-initialization functions #####
ganlikun 0:13413ea9a877 171 ===============================================================================
ganlikun 0:13413ea9a877 172 [..]
ganlikun 0:13413ea9a877 173 This section provides functions allowing to initialize and de-initialize the GPIOs
ganlikun 0:13413ea9a877 174 to be ready for use.
ganlikun 0:13413ea9a877 175
ganlikun 0:13413ea9a877 176 @endverbatim
ganlikun 0:13413ea9a877 177 * @{
ganlikun 0:13413ea9a877 178 */
ganlikun 0:13413ea9a877 179
ganlikun 0:13413ea9a877 180
ganlikun 0:13413ea9a877 181 /**
ganlikun 0:13413ea9a877 182 * @brief Initializes the GPIOx peripheral according to the specified parameters in the GPIO_Init.
ganlikun 0:13413ea9a877 183 * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
ganlikun 0:13413ea9a877 184 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
ganlikun 0:13413ea9a877 185 * @param GPIO_Init: pointer to a GPIO_InitTypeDef structure that contains
ganlikun 0:13413ea9a877 186 * the configuration information for the specified GPIO peripheral.
ganlikun 0:13413ea9a877 187 * @retval None
ganlikun 0:13413ea9a877 188 */
ganlikun 0:13413ea9a877 189 void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init)
ganlikun 0:13413ea9a877 190 {
ganlikun 0:13413ea9a877 191 uint32_t position;
ganlikun 0:13413ea9a877 192 uint32_t ioposition = 0x00U;
ganlikun 0:13413ea9a877 193 uint32_t iocurrent = 0x00U;
ganlikun 0:13413ea9a877 194 uint32_t temp = 0x00U;
ganlikun 0:13413ea9a877 195
ganlikun 0:13413ea9a877 196 /* Check the parameters */
ganlikun 0:13413ea9a877 197 assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
ganlikun 0:13413ea9a877 198 assert_param(IS_GPIO_PIN(GPIO_Init->Pin));
ganlikun 0:13413ea9a877 199 assert_param(IS_GPIO_MODE(GPIO_Init->Mode));
ganlikun 0:13413ea9a877 200 assert_param(IS_GPIO_PULL(GPIO_Init->Pull));
ganlikun 0:13413ea9a877 201
ganlikun 0:13413ea9a877 202 /* Configure the port pins */
ganlikun 0:13413ea9a877 203 for(position = 0U; position < GPIO_NUMBER; position++)
ganlikun 0:13413ea9a877 204 {
ganlikun 0:13413ea9a877 205 /* Get the IO position */
ganlikun 0:13413ea9a877 206 ioposition = 0x01U << position;
ganlikun 0:13413ea9a877 207 /* Get the current IO position */
ganlikun 0:13413ea9a877 208 iocurrent = (uint32_t)(GPIO_Init->Pin) & ioposition;
ganlikun 0:13413ea9a877 209
ganlikun 0:13413ea9a877 210 if(iocurrent == ioposition)
ganlikun 0:13413ea9a877 211 {
ganlikun 0:13413ea9a877 212 /*--------------------- GPIO Mode Configuration ------------------------*/
ganlikun 0:13413ea9a877 213 /* In case of Alternate function mode selection */
ganlikun 0:13413ea9a877 214 if((GPIO_Init->Mode == GPIO_MODE_AF_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
ganlikun 0:13413ea9a877 215 {
ganlikun 0:13413ea9a877 216 /* Check the Alternate function parameter */
ganlikun 0:13413ea9a877 217 assert_param(IS_GPIO_AF(GPIO_Init->Alternate));
ganlikun 0:13413ea9a877 218 /* Configure Alternate function mapped with the current IO */
ganlikun 0:13413ea9a877 219 temp = GPIOx->AFR[position >> 3U];
ganlikun 0:13413ea9a877 220 temp &= ~(0xFU << ((uint32_t)(position & 0x07U) * 4U)) ;
ganlikun 0:13413ea9a877 221 temp |= ((uint32_t)(GPIO_Init->Alternate) << (((uint32_t)position & 0x07U) * 4U));
ganlikun 0:13413ea9a877 222 GPIOx->AFR[position >> 3U] = temp;
ganlikun 0:13413ea9a877 223 }
ganlikun 0:13413ea9a877 224
ganlikun 0:13413ea9a877 225 /* Configure IO Direction mode (Input, Output, Alternate or Analog) */
ganlikun 0:13413ea9a877 226 temp = GPIOx->MODER;
ganlikun 0:13413ea9a877 227 temp &= ~(GPIO_MODER_MODER0 << (position * 2U));
ganlikun 0:13413ea9a877 228 temp |= ((GPIO_Init->Mode & GPIO_MODE) << (position * 2U));
ganlikun 0:13413ea9a877 229 GPIOx->MODER = temp;
ganlikun 0:13413ea9a877 230
ganlikun 0:13413ea9a877 231 /* In case of Output or Alternate function mode selection */
ganlikun 0:13413ea9a877 232 if((GPIO_Init->Mode == GPIO_MODE_OUTPUT_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_PP) ||
ganlikun 0:13413ea9a877 233 (GPIO_Init->Mode == GPIO_MODE_OUTPUT_OD) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
ganlikun 0:13413ea9a877 234 {
ganlikun 0:13413ea9a877 235 /* Check the Speed parameter */
ganlikun 0:13413ea9a877 236 assert_param(IS_GPIO_SPEED(GPIO_Init->Speed));
ganlikun 0:13413ea9a877 237 /* Configure the IO Speed */
ganlikun 0:13413ea9a877 238 temp = GPIOx->OSPEEDR;
ganlikun 0:13413ea9a877 239 temp &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2U));
ganlikun 0:13413ea9a877 240 temp |= (GPIO_Init->Speed << (position * 2U));
ganlikun 0:13413ea9a877 241 GPIOx->OSPEEDR = temp;
ganlikun 0:13413ea9a877 242
ganlikun 0:13413ea9a877 243 /* Configure the IO Output Type */
ganlikun 0:13413ea9a877 244 temp = GPIOx->OTYPER;
ganlikun 0:13413ea9a877 245 temp &= ~(GPIO_OTYPER_OT_0 << position) ;
ganlikun 0:13413ea9a877 246 temp |= (((GPIO_Init->Mode & GPIO_OUTPUT_TYPE) >> 4U) << position);
ganlikun 0:13413ea9a877 247 GPIOx->OTYPER = temp;
ganlikun 0:13413ea9a877 248 }
ganlikun 0:13413ea9a877 249
ganlikun 0:13413ea9a877 250 /* Activate the Pull-up or Pull down resistor for the current IO */
ganlikun 0:13413ea9a877 251 temp = GPIOx->PUPDR;
ganlikun 0:13413ea9a877 252 temp &= ~(GPIO_PUPDR_PUPDR0 << (position * 2U));
ganlikun 0:13413ea9a877 253 temp |= ((GPIO_Init->Pull) << (position * 2U));
ganlikun 0:13413ea9a877 254 GPIOx->PUPDR = temp;
ganlikun 0:13413ea9a877 255
ganlikun 0:13413ea9a877 256 /*--------------------- EXTI Mode Configuration ------------------------*/
ganlikun 0:13413ea9a877 257 /* Configure the External Interrupt or event for the current IO */
ganlikun 0:13413ea9a877 258 if((GPIO_Init->Mode & EXTI_MODE) == EXTI_MODE)
ganlikun 0:13413ea9a877 259 {
ganlikun 0:13413ea9a877 260 /* Enable SYSCFG Clock */
ganlikun 0:13413ea9a877 261 __HAL_RCC_SYSCFG_CLK_ENABLE();
ganlikun 0:13413ea9a877 262
ganlikun 0:13413ea9a877 263 temp = SYSCFG->EXTICR[position >> 2U];
ganlikun 0:13413ea9a877 264 temp &= ~(0x0FU << (4U * (position & 0x03U)));
ganlikun 0:13413ea9a877 265 temp |= ((uint32_t)(GPIO_GET_INDEX(GPIOx)) << (4U * (position & 0x03U)));
ganlikun 0:13413ea9a877 266 SYSCFG->EXTICR[position >> 2U] = temp;
ganlikun 0:13413ea9a877 267
ganlikun 0:13413ea9a877 268 /* Clear EXTI line configuration */
ganlikun 0:13413ea9a877 269 temp = EXTI->IMR;
ganlikun 0:13413ea9a877 270 temp &= ~((uint32_t)iocurrent);
ganlikun 0:13413ea9a877 271 if((GPIO_Init->Mode & GPIO_MODE_IT) == GPIO_MODE_IT)
ganlikun 0:13413ea9a877 272 {
ganlikun 0:13413ea9a877 273 temp |= iocurrent;
ganlikun 0:13413ea9a877 274 }
ganlikun 0:13413ea9a877 275 EXTI->IMR = temp;
ganlikun 0:13413ea9a877 276
ganlikun 0:13413ea9a877 277 temp = EXTI->EMR;
ganlikun 0:13413ea9a877 278 temp &= ~((uint32_t)iocurrent);
ganlikun 0:13413ea9a877 279 if((GPIO_Init->Mode & GPIO_MODE_EVT) == GPIO_MODE_EVT)
ganlikun 0:13413ea9a877 280 {
ganlikun 0:13413ea9a877 281 temp |= iocurrent;
ganlikun 0:13413ea9a877 282 }
ganlikun 0:13413ea9a877 283 EXTI->EMR = temp;
ganlikun 0:13413ea9a877 284
ganlikun 0:13413ea9a877 285 /* Clear Rising Falling edge configuration */
ganlikun 0:13413ea9a877 286 temp = EXTI->RTSR;
ganlikun 0:13413ea9a877 287 temp &= ~((uint32_t)iocurrent);
ganlikun 0:13413ea9a877 288 if((GPIO_Init->Mode & RISING_EDGE) == RISING_EDGE)
ganlikun 0:13413ea9a877 289 {
ganlikun 0:13413ea9a877 290 temp |= iocurrent;
ganlikun 0:13413ea9a877 291 }
ganlikun 0:13413ea9a877 292 EXTI->RTSR = temp;
ganlikun 0:13413ea9a877 293
ganlikun 0:13413ea9a877 294 temp = EXTI->FTSR;
ganlikun 0:13413ea9a877 295 temp &= ~((uint32_t)iocurrent);
ganlikun 0:13413ea9a877 296 if((GPIO_Init->Mode & FALLING_EDGE) == FALLING_EDGE)
ganlikun 0:13413ea9a877 297 {
ganlikun 0:13413ea9a877 298 temp |= iocurrent;
ganlikun 0:13413ea9a877 299 }
ganlikun 0:13413ea9a877 300 EXTI->FTSR = temp;
ganlikun 0:13413ea9a877 301 }
ganlikun 0:13413ea9a877 302 }
ganlikun 0:13413ea9a877 303 }
ganlikun 0:13413ea9a877 304 }
ganlikun 0:13413ea9a877 305
ganlikun 0:13413ea9a877 306 /**
ganlikun 0:13413ea9a877 307 * @brief De-initializes the GPIOx peripheral registers to their default reset values.
ganlikun 0:13413ea9a877 308 * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
ganlikun 0:13413ea9a877 309 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
ganlikun 0:13413ea9a877 310 * @param GPIO_Pin: specifies the port bit to be written.
ganlikun 0:13413ea9a877 311 * This parameter can be one of GPIO_PIN_x where x can be (0..15).
ganlikun 0:13413ea9a877 312 * @retval None
ganlikun 0:13413ea9a877 313 */
ganlikun 0:13413ea9a877 314 void HAL_GPIO_DeInit(GPIO_TypeDef *GPIOx, uint32_t GPIO_Pin)
ganlikun 0:13413ea9a877 315 {
ganlikun 0:13413ea9a877 316 uint32_t position;
ganlikun 0:13413ea9a877 317 uint32_t ioposition = 0x00U;
ganlikun 0:13413ea9a877 318 uint32_t iocurrent = 0x00U;
ganlikun 0:13413ea9a877 319 uint32_t tmp = 0x00U;
ganlikun 0:13413ea9a877 320
ganlikun 0:13413ea9a877 321 /* Check the parameters */
ganlikun 0:13413ea9a877 322 assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
ganlikun 0:13413ea9a877 323
ganlikun 0:13413ea9a877 324 /* Configure the port pins */
ganlikun 0:13413ea9a877 325 for(position = 0U; position < GPIO_NUMBER; position++)
ganlikun 0:13413ea9a877 326 {
ganlikun 0:13413ea9a877 327 /* Get the IO position */
ganlikun 0:13413ea9a877 328 ioposition = 0x01U << position;
ganlikun 0:13413ea9a877 329 /* Get the current IO position */
ganlikun 0:13413ea9a877 330 iocurrent = (GPIO_Pin) & ioposition;
ganlikun 0:13413ea9a877 331
ganlikun 0:13413ea9a877 332 if(iocurrent == ioposition)
ganlikun 0:13413ea9a877 333 {
ganlikun 0:13413ea9a877 334 /*------------------------- GPIO Mode Configuration --------------------*/
ganlikun 0:13413ea9a877 335 /* Configure IO Direction in Input Floating Mode */
ganlikun 0:13413ea9a877 336 GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (position * 2U));
ganlikun 0:13413ea9a877 337
ganlikun 0:13413ea9a877 338 /* Configure the default Alternate Function in current IO */
ganlikun 0:13413ea9a877 339 GPIOx->AFR[position >> 3U] &= ~(0xFU << ((uint32_t)(position & 0x07U) * 4U)) ;
ganlikun 0:13413ea9a877 340
ganlikun 0:13413ea9a877 341 /* Configure the default value for IO Speed */
ganlikun 0:13413ea9a877 342 GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2U));
ganlikun 0:13413ea9a877 343
ganlikun 0:13413ea9a877 344 /* Configure the default value IO Output Type */
ganlikun 0:13413ea9a877 345 GPIOx->OTYPER &= ~(GPIO_OTYPER_OT_0 << position) ;
ganlikun 0:13413ea9a877 346
ganlikun 0:13413ea9a877 347 /* Deactivate the Pull-up and Pull-down resistor for the current IO */
ganlikun 0:13413ea9a877 348 GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << (position * 2U));
ganlikun 0:13413ea9a877 349
ganlikun 0:13413ea9a877 350 /*------------------------- EXTI Mode Configuration --------------------*/
ganlikun 0:13413ea9a877 351 tmp = SYSCFG->EXTICR[position >> 2U];
ganlikun 0:13413ea9a877 352 tmp &= (0x0FU << (4U * (position & 0x03U)));
ganlikun 0:13413ea9a877 353 if(tmp == ((uint32_t)(GPIO_GET_INDEX(GPIOx)) << (4U * (position & 0x03U))))
ganlikun 0:13413ea9a877 354 {
ganlikun 0:13413ea9a877 355 /* Configure the External Interrupt or event for the current IO */
ganlikun 0:13413ea9a877 356 tmp = 0x0FU << (4U * (position & 0x03U));
ganlikun 0:13413ea9a877 357 SYSCFG->EXTICR[position >> 2U] &= ~tmp;
ganlikun 0:13413ea9a877 358
ganlikun 0:13413ea9a877 359 /* Clear EXTI line configuration */
ganlikun 0:13413ea9a877 360 EXTI->IMR &= ~((uint32_t)iocurrent);
ganlikun 0:13413ea9a877 361 EXTI->EMR &= ~((uint32_t)iocurrent);
ganlikun 0:13413ea9a877 362
ganlikun 0:13413ea9a877 363 /* Clear Rising Falling edge configuration */
ganlikun 0:13413ea9a877 364 EXTI->RTSR &= ~((uint32_t)iocurrent);
ganlikun 0:13413ea9a877 365 EXTI->FTSR &= ~((uint32_t)iocurrent);
ganlikun 0:13413ea9a877 366 }
ganlikun 0:13413ea9a877 367 }
ganlikun 0:13413ea9a877 368 }
ganlikun 0:13413ea9a877 369 }
ganlikun 0:13413ea9a877 370
ganlikun 0:13413ea9a877 371 /**
ganlikun 0:13413ea9a877 372 * @}
ganlikun 0:13413ea9a877 373 */
ganlikun 0:13413ea9a877 374
ganlikun 0:13413ea9a877 375 /** @defgroup GPIO_Exported_Functions_Group2 IO operation functions
ganlikun 0:13413ea9a877 376 * @brief GPIO Read and Write
ganlikun 0:13413ea9a877 377 *
ganlikun 0:13413ea9a877 378 @verbatim
ganlikun 0:13413ea9a877 379 ===============================================================================
ganlikun 0:13413ea9a877 380 ##### IO operation functions #####
ganlikun 0:13413ea9a877 381 ===============================================================================
ganlikun 0:13413ea9a877 382
ganlikun 0:13413ea9a877 383 @endverbatim
ganlikun 0:13413ea9a877 384 * @{
ganlikun 0:13413ea9a877 385 */
ganlikun 0:13413ea9a877 386
ganlikun 0:13413ea9a877 387 /**
ganlikun 0:13413ea9a877 388 * @brief Reads the specified input port pin.
ganlikun 0:13413ea9a877 389 * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
ganlikun 0:13413ea9a877 390 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
ganlikun 0:13413ea9a877 391 * @param GPIO_Pin: specifies the port bit to read.
ganlikun 0:13413ea9a877 392 * This parameter can be GPIO_PIN_x where x can be (0..15).
ganlikun 0:13413ea9a877 393 * @retval The input port pin value.
ganlikun 0:13413ea9a877 394 */
ganlikun 0:13413ea9a877 395 GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
ganlikun 0:13413ea9a877 396 {
ganlikun 0:13413ea9a877 397 GPIO_PinState bitstatus;
ganlikun 0:13413ea9a877 398
ganlikun 0:13413ea9a877 399 /* Check the parameters */
ganlikun 0:13413ea9a877 400 assert_param(IS_GPIO_PIN(GPIO_Pin));
ganlikun 0:13413ea9a877 401
ganlikun 0:13413ea9a877 402 if((GPIOx->IDR & GPIO_Pin) != (uint32_t)GPIO_PIN_RESET)
ganlikun 0:13413ea9a877 403 {
ganlikun 0:13413ea9a877 404 bitstatus = GPIO_PIN_SET;
ganlikun 0:13413ea9a877 405 }
ganlikun 0:13413ea9a877 406 else
ganlikun 0:13413ea9a877 407 {
ganlikun 0:13413ea9a877 408 bitstatus = GPIO_PIN_RESET;
ganlikun 0:13413ea9a877 409 }
ganlikun 0:13413ea9a877 410 return bitstatus;
ganlikun 0:13413ea9a877 411 }
ganlikun 0:13413ea9a877 412
ganlikun 0:13413ea9a877 413 /**
ganlikun 0:13413ea9a877 414 * @brief Sets or clears the selected data port bit.
ganlikun 0:13413ea9a877 415 *
ganlikun 0:13413ea9a877 416 * @note This function uses GPIOx_BSRR register to allow atomic read/modify
ganlikun 0:13413ea9a877 417 * accesses. In this way, there is no risk of an IRQ occurring between
ganlikun 0:13413ea9a877 418 * the read and the modify access.
ganlikun 0:13413ea9a877 419 *
ganlikun 0:13413ea9a877 420 * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
ganlikun 0:13413ea9a877 421 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
ganlikun 0:13413ea9a877 422 * @param GPIO_Pin: specifies the port bit to be written.
ganlikun 0:13413ea9a877 423 * This parameter can be one of GPIO_PIN_x where x can be (0..15).
ganlikun 0:13413ea9a877 424 * @param PinState: specifies the value to be written to the selected bit.
ganlikun 0:13413ea9a877 425 * This parameter can be one of the GPIO_PinState enum values:
ganlikun 0:13413ea9a877 426 * @arg GPIO_PIN_RESET: to clear the port pin
ganlikun 0:13413ea9a877 427 * @arg GPIO_PIN_SET: to set the port pin
ganlikun 0:13413ea9a877 428 * @retval None
ganlikun 0:13413ea9a877 429 */
ganlikun 0:13413ea9a877 430 void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState)
ganlikun 0:13413ea9a877 431 {
ganlikun 0:13413ea9a877 432 /* Check the parameters */
ganlikun 0:13413ea9a877 433 assert_param(IS_GPIO_PIN(GPIO_Pin));
ganlikun 0:13413ea9a877 434 assert_param(IS_GPIO_PIN_ACTION(PinState));
ganlikun 0:13413ea9a877 435
ganlikun 0:13413ea9a877 436 if(PinState != GPIO_PIN_RESET)
ganlikun 0:13413ea9a877 437 {
ganlikun 0:13413ea9a877 438 GPIOx->BSRR = GPIO_Pin;
ganlikun 0:13413ea9a877 439 }
ganlikun 0:13413ea9a877 440 else
ganlikun 0:13413ea9a877 441 {
ganlikun 0:13413ea9a877 442 GPIOx->BSRR = (uint32_t)GPIO_Pin << 16U;
ganlikun 0:13413ea9a877 443 }
ganlikun 0:13413ea9a877 444 }
ganlikun 0:13413ea9a877 445
ganlikun 0:13413ea9a877 446 /**
ganlikun 0:13413ea9a877 447 * @brief Toggles the specified GPIO pins.
ganlikun 0:13413ea9a877 448 * @param GPIOx: Where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
ganlikun 0:13413ea9a877 449 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
ganlikun 0:13413ea9a877 450 * @param GPIO_Pin: Specifies the pins to be toggled.
ganlikun 0:13413ea9a877 451 * @retval None
ganlikun 0:13413ea9a877 452 */
ganlikun 0:13413ea9a877 453 void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
ganlikun 0:13413ea9a877 454 {
ganlikun 0:13413ea9a877 455 /* Check the parameters */
ganlikun 0:13413ea9a877 456 assert_param(IS_GPIO_PIN(GPIO_Pin));
ganlikun 0:13413ea9a877 457
ganlikun 0:13413ea9a877 458 GPIOx->ODR ^= GPIO_Pin;
ganlikun 0:13413ea9a877 459 }
ganlikun 0:13413ea9a877 460
ganlikun 0:13413ea9a877 461 /**
ganlikun 0:13413ea9a877 462 * @brief Locks GPIO Pins configuration registers.
ganlikun 0:13413ea9a877 463 * @note The locked registers are GPIOx_MODER, GPIOx_OTYPER, GPIOx_OSPEEDR,
ganlikun 0:13413ea9a877 464 * GPIOx_PUPDR, GPIOx_AFRL and GPIOx_AFRH.
ganlikun 0:13413ea9a877 465 * @note The configuration of the locked GPIO pins can no longer be modified
ganlikun 0:13413ea9a877 466 * until the next reset.
ganlikun 0:13413ea9a877 467 * @param GPIOx: where x can be (A..F) to select the GPIO peripheral for STM32F4 family
ganlikun 0:13413ea9a877 468 * @param GPIO_Pin: specifies the port bit to be locked.
ganlikun 0:13413ea9a877 469 * This parameter can be any combination of GPIO_PIN_x where x can be (0..15).
ganlikun 0:13413ea9a877 470 * @retval None
ganlikun 0:13413ea9a877 471 */
ganlikun 0:13413ea9a877 472 HAL_StatusTypeDef HAL_GPIO_LockPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
ganlikun 0:13413ea9a877 473 {
ganlikun 0:13413ea9a877 474 __IO uint32_t tmp = GPIO_LCKR_LCKK;
ganlikun 0:13413ea9a877 475
ganlikun 0:13413ea9a877 476 /* Check the parameters */
ganlikun 0:13413ea9a877 477 assert_param(IS_GPIO_PIN(GPIO_Pin));
ganlikun 0:13413ea9a877 478
ganlikun 0:13413ea9a877 479 /* Apply lock key write sequence */
ganlikun 0:13413ea9a877 480 tmp |= GPIO_Pin;
ganlikun 0:13413ea9a877 481 /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */
ganlikun 0:13413ea9a877 482 GPIOx->LCKR = tmp;
ganlikun 0:13413ea9a877 483 /* Reset LCKx bit(s): LCKK='0' + LCK[15-0] */
ganlikun 0:13413ea9a877 484 GPIOx->LCKR = GPIO_Pin;
ganlikun 0:13413ea9a877 485 /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */
ganlikun 0:13413ea9a877 486 GPIOx->LCKR = tmp;
ganlikun 0:13413ea9a877 487 /* Read LCKK bit*/
ganlikun 0:13413ea9a877 488 tmp = GPIOx->LCKR;
ganlikun 0:13413ea9a877 489
ganlikun 0:13413ea9a877 490 if((GPIOx->LCKR & GPIO_LCKR_LCKK) != RESET)
ganlikun 0:13413ea9a877 491 {
ganlikun 0:13413ea9a877 492 return HAL_OK;
ganlikun 0:13413ea9a877 493 }
ganlikun 0:13413ea9a877 494 else
ganlikun 0:13413ea9a877 495 {
ganlikun 0:13413ea9a877 496 return HAL_ERROR;
ganlikun 0:13413ea9a877 497 }
ganlikun 0:13413ea9a877 498 }
ganlikun 0:13413ea9a877 499
ganlikun 0:13413ea9a877 500 /**
ganlikun 0:13413ea9a877 501 * @brief This function handles EXTI interrupt request.
ganlikun 0:13413ea9a877 502 * @param GPIO_Pin: Specifies the pins connected EXTI line
ganlikun 0:13413ea9a877 503 * @retval None
ganlikun 0:13413ea9a877 504 */
ganlikun 0:13413ea9a877 505 void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)
ganlikun 0:13413ea9a877 506 {
ganlikun 0:13413ea9a877 507 /* EXTI line interrupt detected */
ganlikun 0:13413ea9a877 508 if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET)
ganlikun 0:13413ea9a877 509 {
ganlikun 0:13413ea9a877 510 __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin);
ganlikun 0:13413ea9a877 511 HAL_GPIO_EXTI_Callback(GPIO_Pin);
ganlikun 0:13413ea9a877 512 }
ganlikun 0:13413ea9a877 513 }
ganlikun 0:13413ea9a877 514
ganlikun 0:13413ea9a877 515 /**
ganlikun 0:13413ea9a877 516 * @brief EXTI line detection callbacks.
ganlikun 0:13413ea9a877 517 * @param GPIO_Pin: Specifies the pins connected EXTI line
ganlikun 0:13413ea9a877 518 * @retval None
ganlikun 0:13413ea9a877 519 */
ganlikun 0:13413ea9a877 520 __weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
ganlikun 0:13413ea9a877 521 {
ganlikun 0:13413ea9a877 522 /* Prevent unused argument(s) compilation warning */
ganlikun 0:13413ea9a877 523 UNUSED(GPIO_Pin);
ganlikun 0:13413ea9a877 524 /* NOTE: This function Should not be modified, when the callback is needed,
ganlikun 0:13413ea9a877 525 the HAL_GPIO_EXTI_Callback could be implemented in the user file
ganlikun 0:13413ea9a877 526 */
ganlikun 0:13413ea9a877 527 }
ganlikun 0:13413ea9a877 528
ganlikun 0:13413ea9a877 529 /**
ganlikun 0:13413ea9a877 530 * @}
ganlikun 0:13413ea9a877 531 */
ganlikun 0:13413ea9a877 532
ganlikun 0:13413ea9a877 533
ganlikun 0:13413ea9a877 534 /**
ganlikun 0:13413ea9a877 535 * @}
ganlikun 0:13413ea9a877 536 */
ganlikun 0:13413ea9a877 537
ganlikun 0:13413ea9a877 538 #endif /* HAL_GPIO_MODULE_ENABLED */
ganlikun 0:13413ea9a877 539 /**
ganlikun 0:13413ea9a877 540 * @}
ganlikun 0:13413ea9a877 541 */
ganlikun 0:13413ea9a877 542
ganlikun 0:13413ea9a877 543 /**
ganlikun 0:13413ea9a877 544 * @}
ganlikun 0:13413ea9a877 545 */
ganlikun 0:13413ea9a877 546
ganlikun 0:13413ea9a877 547 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
ganlikun 0:13413ea9a877 548