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Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_STM/TARGET_NUCLEO_F401RE/stm32f4xx_hal_gpio.c@87:085cde657901, 2014-02-08 (annotated)

Committer:
mbed_official
Date:
Sat Feb 08 19:45:06 2014 +0000
Revision:
87:085cde657901
Child:
106:ced8cbb51063
Synchronized with git revision 9272cdeb45ec7e6077641536509413da8fd2ebc2



Full URL: https://github.com/mbedmicro/mbed/commit/9272cdeb45ec7e6077641536509413da8fd2ebc2/



Add NUCLEO_F401RE, improvements

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 87:085cde657901 1 /**
mbed_official 87:085cde657901 2 ******************************************************************************
mbed_official 87:085cde657901 3 * @file stm32f4xx_hal_gpio.c
mbed_official 87:085cde657901 4 * @author MCD Application Team
mbed_official 87:085cde657901 5 * @version V1.0.0RC2
mbed_official 87:085cde657901 6 * @date 04-February-2014
mbed_official 87:085cde657901 7 * @brief GPIO HAL module driver.
mbed_official 87:085cde657901 8 * This file provides firmware functions to manage the following
mbed_official 87:085cde657901 9 * functionalities of the General Purpose Input/Output (GPIO) peripheral:
mbed_official 87:085cde657901 10 * + Initialization and de-initialization functions
mbed_official 87:085cde657901 11 * + IO operation functions
mbed_official 87:085cde657901 12 *
mbed_official 87:085cde657901 13 @verbatim
mbed_official 87:085cde657901 14 ==============================================================================
mbed_official 87:085cde657901 15 ##### GPIO Peripheral features #####
mbed_official 87:085cde657901 16 ==============================================================================
mbed_official 87:085cde657901 17 [..]
mbed_official 87:085cde657901 18 (+) Each port bit of the general-purpose I/O (GPIO) ports can be individually
mbed_official 87:085cde657901 19 configured by software in several modes:
mbed_official 87:085cde657901 20 (++) Input mode
mbed_official 87:085cde657901 21 (++) Analog mode
mbed_official 87:085cde657901 22 (++) Output mode
mbed_official 87:085cde657901 23 (++) Alternate function mode
mbed_official 87:085cde657901 24 (++) External interrupt/event lines
mbed_official 87:085cde657901 25
mbed_official 87:085cde657901 26 (+) During and just after reset, the alternate functions and external interrupt
mbed_official 87:085cde657901 27 lines are not active and the I/O ports are configured in input floating mode.
mbed_official 87:085cde657901 28
mbed_official 87:085cde657901 29 (+) All GPIO pins have weak internal pull-up and pull-down resistors, which can be
mbed_official 87:085cde657901 30 activated or not.
mbed_official 87:085cde657901 31
mbed_official 87:085cde657901 32 (+) In Output or Alternate mode, each IO can be configured on open-drain or push-pull
mbed_official 87:085cde657901 33 type and the IO speed can be selected depending on the VDD value.
mbed_official 87:085cde657901 34
mbed_official 87:085cde657901 35 (+) The microcontroller IO pins are connected to onboard peripherals/modules through a
mbed_official 87:085cde657901 36 multiplexer that allows only one peripheral alternate function (AF) connected
mbed_official 87:085cde657901 37 to an IO pin at a time. In this way, there can be no conflict between peripherals
mbed_official 87:085cde657901 38 sharing the same IO pin.
mbed_official 87:085cde657901 39
mbed_official 87:085cde657901 40 (+) All ports have external interrupt/event capability. To use external interrupt
mbed_official 87:085cde657901 41 lines, the port must be configured in input mode. All available GPIO pins are
mbed_official 87:085cde657901 42 connected to the 16 external interrupt/event lines from EXTI0 to EXTI15.
mbed_official 87:085cde657901 43
mbed_official 87:085cde657901 44 (+) The external interrupt/event controller consists of up to 23 edge detectors
mbed_official 87:085cde657901 45 (16 lines are connected to GPIO) for generating event/interrupt requests (each
mbed_official 87:085cde657901 46 input line can be independently configured to select the type (interrupt or event)
mbed_official 87:085cde657901 47 and the corresponding trigger event (rising or falling or both). Each line can
mbed_official 87:085cde657901 48 also be masked independently.
mbed_official 87:085cde657901 49
mbed_official 87:085cde657901 50 ##### How to use this driver #####
mbed_official 87:085cde657901 51 ==============================================================================
mbed_official 87:085cde657901 52 [..]
mbed_official 87:085cde657901 53 (#) Enable the GPIO AHB clock using the following function: __GPIOx_CLK_ENABLE().
mbed_official 87:085cde657901 54
mbed_official 87:085cde657901 55 (#) Configure the GPIO pin(s) using HAL_GPIO_Init().
mbed_official 87:085cde657901 56 (++) Configure the IO mode using "Mode" member from GPIO_InitTypeDef structure
mbed_official 87:085cde657901 57 (++) Activate Pull-up, Pull-down resistor using "Pull" member from GPIO_InitTypeDef
mbed_official 87:085cde657901 58 structure.
mbed_official 87:085cde657901 59 (++) In case of Output or alternate function mode selection: the speed is
mbed_official 87:085cde657901 60 configured through "Speed" member from GPIO_InitTypeDef structure.
mbed_official 87:085cde657901 61 (++) In alternate mode is selection, the alternate function connected to the IO
mbed_official 87:085cde657901 62 is configured through "Alternate" member from GPIO_InitTypeDef structure.
mbed_official 87:085cde657901 63 (++) Analog mode is required when a pin is to be used as ADC channel
mbed_official 87:085cde657901 64 or DAC output.
mbed_official 87:085cde657901 65 (++) In case of external interrupt/event selection the "Mode" member from
mbed_official 87:085cde657901 66 GPIO_InitTypeDef structure select the type (interrupt or event) and
mbed_official 87:085cde657901 67 the corresponding trigger event (rising or falling or both).
mbed_official 87:085cde657901 68
mbed_official 87:085cde657901 69 (#) In case of external interrupt/event mode selection, configure NVIC IRQ priority
mbed_official 87:085cde657901 70 mapped to the EXTI line using HAL_NVIC_SetPriority() and enable it using
mbed_official 87:085cde657901 71 HAL_NVIC_EnableIRQ().
mbed_official 87:085cde657901 72
mbed_official 87:085cde657901 73 (#) To get the level of a pin configured in input mode use HAL_GPIO_ReadPin().
mbed_official 87:085cde657901 74
mbed_official 87:085cde657901 75 (#) To set/reset the level of a pin configured in output mode use
mbed_official 87:085cde657901 76 HAL_GPIO_WritePin()/HAL_GPIO_TogglePin().
mbed_official 87:085cde657901 77
mbed_official 87:085cde657901 78 (#) During and just after reset, the alternate functions are not
mbed_official 87:085cde657901 79 active and the GPIO pins are configured in input floating mode (except JTAG
mbed_official 87:085cde657901 80 pins).
mbed_official 87:085cde657901 81
mbed_official 87:085cde657901 82 (#) The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as general purpose
mbed_official 87:085cde657901 83 (PC14 and PC15, respectively) when the LSE oscillator is off. The LSE has
mbed_official 87:085cde657901 84 priority over the GPIO function.
mbed_official 87:085cde657901 85
mbed_official 87:085cde657901 86 (#) The HSE oscillator pins OSC_IN/OSC_OUT can be used as
mbed_official 87:085cde657901 87 general purpose PH0 and PH1, respectively, when the HSE oscillator is off.
mbed_official 87:085cde657901 88 The HSE has priority over the GPIO function.
mbed_official 87:085cde657901 89
mbed_official 87:085cde657901 90 @endverbatim
mbed_official 87:085cde657901 91 ******************************************************************************
mbed_official 87:085cde657901 92 * @attention
mbed_official 87:085cde657901 93 *
mbed_official 87:085cde657901 94 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 87:085cde657901 95 *
mbed_official 87:085cde657901 96 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 87:085cde657901 97 * are permitted provided that the following conditions are met:
mbed_official 87:085cde657901 98 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 87:085cde657901 99 * this list of conditions and the following disclaimer.
mbed_official 87:085cde657901 100 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 87:085cde657901 101 * this list of conditions and the following disclaimer in the documentation
mbed_official 87:085cde657901 102 * and/or other materials provided with the distribution.
mbed_official 87:085cde657901 103 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 87:085cde657901 104 * may be used to endorse or promote products derived from this software
mbed_official 87:085cde657901 105 * without specific prior written permission.
mbed_official 87:085cde657901 106 *
mbed_official 87:085cde657901 107 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 87:085cde657901 108 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 87:085cde657901 109 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 87:085cde657901 110 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 87:085cde657901 111 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 87:085cde657901 112 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 87:085cde657901 113 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 87:085cde657901 114 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 87:085cde657901 115 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 87:085cde657901 116 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 87:085cde657901 117 *
mbed_official 87:085cde657901 118 ******************************************************************************
mbed_official 87:085cde657901 119 */
mbed_official 87:085cde657901 120
mbed_official 87:085cde657901 121 /* Includes ------------------------------------------------------------------*/
mbed_official 87:085cde657901 122 #include "stm32f4xx_hal.h"
mbed_official 87:085cde657901 123
mbed_official 87:085cde657901 124 /** @addtogroup STM32F4xx_HAL_Driver
mbed_official 87:085cde657901 125 * @{
mbed_official 87:085cde657901 126 */
mbed_official 87:085cde657901 127
mbed_official 87:085cde657901 128 /** @defgroup GPIO
mbed_official 87:085cde657901 129 * @brief GPIO HAL module driver
mbed_official 87:085cde657901 130 * @{
mbed_official 87:085cde657901 131 */
mbed_official 87:085cde657901 132
mbed_official 87:085cde657901 133 #ifdef HAL_GPIO_MODULE_ENABLED
mbed_official 87:085cde657901 134
mbed_official 87:085cde657901 135 /* Private typedef -----------------------------------------------------------*/
mbed_official 87:085cde657901 136 /* Private define ------------------------------------------------------------*/
mbed_official 87:085cde657901 137 /* Private macro -------------------------------------------------------------*/
mbed_official 87:085cde657901 138 #define __HAL_GET_GPIO_SOURCE(__GPIOx__) \
mbed_official 87:085cde657901 139 (((uint32_t)(__GPIOx__) == ((uint32_t)GPIOA_BASE))? (uint32_t)0 :\
mbed_official 87:085cde657901 140 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x0400)))? (uint32_t)1 :\
mbed_official 87:085cde657901 141 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x0800)))? (uint32_t)2 :\
mbed_official 87:085cde657901 142 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x0C00)))? (uint32_t)3 :\
mbed_official 87:085cde657901 143 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x1000)))? (uint32_t)4 :\
mbed_official 87:085cde657901 144 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x1400)))? (uint32_t)5 :\
mbed_official 87:085cde657901 145 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x1800)))? (uint32_t)6 :\
mbed_official 87:085cde657901 146 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x1C00)))? (uint32_t)7 :\
mbed_official 87:085cde657901 147 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x2000)))? (uint32_t)8 :\
mbed_official 87:085cde657901 148 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x2400)))? (uint32_t)9 : (uint32_t)10)
mbed_official 87:085cde657901 149
mbed_official 87:085cde657901 150 #define GPIO_MODE ((uint32_t)0x00000003)
mbed_official 87:085cde657901 151 #define EXTI_MODE ((uint32_t)0x10000000)
mbed_official 87:085cde657901 152 #define GPIO_MODE_IT ((uint32_t)0x00010000)
mbed_official 87:085cde657901 153 #define GPIO_MODE_EVT ((uint32_t)0x00020000)
mbed_official 87:085cde657901 154 #define RISING_EDGE ((uint32_t)0x00100000)
mbed_official 87:085cde657901 155 #define FALLING_EDGE ((uint32_t)0x00200000)
mbed_official 87:085cde657901 156 #define GPIO_OUTPUT_TYPE ((uint32_t)0x00000010)
mbed_official 87:085cde657901 157
mbed_official 87:085cde657901 158 #define GPIO_NUMBER ((uint32_t)16)
mbed_official 87:085cde657901 159 /* Private variables ---------------------------------------------------------*/
mbed_official 87:085cde657901 160 /* Private function prototypes -----------------------------------------------*/
mbed_official 87:085cde657901 161 /* Private functions ---------------------------------------------------------*/
mbed_official 87:085cde657901 162
mbed_official 87:085cde657901 163 /** @defgroup GPIO_Private_Functions
mbed_official 87:085cde657901 164 * @{
mbed_official 87:085cde657901 165 */
mbed_official 87:085cde657901 166
mbed_official 87:085cde657901 167 /** @defgroup GPIO_Group1 Initialization and de-initialization functions
mbed_official 87:085cde657901 168 * @brief Initialization and Configuration functions
mbed_official 87:085cde657901 169 *
mbed_official 87:085cde657901 170 @verbatim
mbed_official 87:085cde657901 171 ===============================================================================
mbed_official 87:085cde657901 172 ##### Initialization and de-initialization functions #####
mbed_official 87:085cde657901 173 ===============================================================================
mbed_official 87:085cde657901 174
mbed_official 87:085cde657901 175 @endverbatim
mbed_official 87:085cde657901 176 * @{
mbed_official 87:085cde657901 177 */
mbed_official 87:085cde657901 178
mbed_official 87:085cde657901 179 /**
mbed_official 87:085cde657901 180 * @brief Initializes the GPIOx peripheral according to the specified parameters in the GPIO_Init.
mbed_official 87:085cde657901 181 * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
mbed_official 87:085cde657901 182 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
mbed_official 87:085cde657901 183 * @param GPIO_Init: pointer to a GPIO_InitTypeDef structure that contains
mbed_official 87:085cde657901 184 * the configuration information for the specified GPIO peripheral.
mbed_official 87:085cde657901 185 * @retval None
mbed_official 87:085cde657901 186 */
mbed_official 87:085cde657901 187 void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init)
mbed_official 87:085cde657901 188 {
mbed_official 87:085cde657901 189 uint32_t position;
mbed_official 87:085cde657901 190 uint32_t ioposition = 0x00;
mbed_official 87:085cde657901 191 uint32_t iocurrent = 0x00;
mbed_official 87:085cde657901 192 uint32_t temp = 0x00;
mbed_official 87:085cde657901 193
mbed_official 87:085cde657901 194 /* Check the parameters */
mbed_official 87:085cde657901 195 assert_param(IS_GPIO_PIN(GPIO_Init->Pin));
mbed_official 87:085cde657901 196 assert_param(IS_GPIO_MODE(GPIO_Init->Mode));
mbed_official 87:085cde657901 197 assert_param(IS_GPIO_PULL(GPIO_Init->Pull));
mbed_official 87:085cde657901 198
mbed_official 87:085cde657901 199 /* Configure the port pins */
mbed_official 87:085cde657901 200 for(position = 0; position < GPIO_NUMBER; position++)
mbed_official 87:085cde657901 201 {
mbed_official 87:085cde657901 202 /* Get the IO position */
mbed_official 87:085cde657901 203 ioposition = ((uint32_t)0x01) << position;
mbed_official 87:085cde657901 204 /* Get the current IO position */
mbed_official 87:085cde657901 205 iocurrent = (uint32_t)(GPIO_Init->Pin) & ioposition;
mbed_official 87:085cde657901 206
mbed_official 87:085cde657901 207 if(iocurrent == ioposition)
mbed_official 87:085cde657901 208 {
mbed_official 87:085cde657901 209 /*--------------------- GPIO Mode Configuration ------------------------*/
mbed_official 87:085cde657901 210 /* In case of Alternate function mode selection */
mbed_official 87:085cde657901 211 if((GPIO_Init->Mode == GPIO_MODE_AF_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
mbed_official 87:085cde657901 212 {
mbed_official 87:085cde657901 213 /* Check the Alternate function parameter */
mbed_official 87:085cde657901 214 assert_param(IS_GPIO_AF(GPIO_Init->Alternate));
mbed_official 87:085cde657901 215 /* Configure Alternate function mapped with the current IO */
mbed_official 87:085cde657901 216 temp = ((uint32_t)(GPIO_Init->Alternate) << (((uint32_t)position & (uint32_t)0x07) * 4)) ;
mbed_official 87:085cde657901 217 GPIOx->AFR[position >> 3] &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;
mbed_official 87:085cde657901 218 GPIOx->AFR[position >> 3] |= temp;
mbed_official 87:085cde657901 219 }
mbed_official 87:085cde657901 220
mbed_official 87:085cde657901 221 /* Configure IO Direction mode (Input, Output, Alternate or Analog) */
mbed_official 87:085cde657901 222 GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (position * 2));
mbed_official 87:085cde657901 223 GPIOx->MODER |= ((GPIO_Init->Mode & GPIO_MODE) << (position * 2));
mbed_official 87:085cde657901 224
mbed_official 87:085cde657901 225 /* In case of Output or Alternate function mode selection */
mbed_official 87:085cde657901 226 if((GPIO_Init->Mode == GPIO_MODE_OUTPUT_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_PP) ||
mbed_official 87:085cde657901 227 (GPIO_Init->Mode == GPIO_MODE_OUTPUT_OD) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
mbed_official 87:085cde657901 228 {
mbed_official 87:085cde657901 229 /* Check the Speed parameter */
mbed_official 87:085cde657901 230 assert_param(IS_GPIO_SPEED(GPIO_Init->Speed));
mbed_official 87:085cde657901 231 /* Configure the IO Speed */
mbed_official 87:085cde657901 232 GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2));
mbed_official 87:085cde657901 233 GPIOx->OSPEEDR |= (GPIO_Init->Speed << (position * 2));
mbed_official 87:085cde657901 234
mbed_official 87:085cde657901 235 /* Configure the IO Output Type */
mbed_official 87:085cde657901 236 GPIOx->OTYPER &= ~(GPIO_OTYPER_OT_0 << position) ;
mbed_official 87:085cde657901 237 GPIOx->OTYPER |= (((GPIO_Init->Mode & GPIO_OUTPUT_TYPE) >> 4) << position);
mbed_official 87:085cde657901 238 }
mbed_official 87:085cde657901 239
mbed_official 87:085cde657901 240 /* Activate the Pull-up or Pull down resistor for the current IO */
mbed_official 87:085cde657901 241 GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << (position * 2));
mbed_official 87:085cde657901 242 GPIOx->PUPDR |= ((GPIO_Init->Pull) << (position * 2));
mbed_official 87:085cde657901 243
mbed_official 87:085cde657901 244
mbed_official 87:085cde657901 245 /*--------------------- EXTI Mode Configuration ------------------------*/
mbed_official 87:085cde657901 246 /* Configure the External Interrupt or event for the current IO */
mbed_official 87:085cde657901 247 if((GPIO_Init->Mode & EXTI_MODE) == EXTI_MODE)
mbed_official 87:085cde657901 248 {
mbed_official 87:085cde657901 249 /* Enable SYSCFG Clock */
mbed_official 87:085cde657901 250 __SYSCFG_CLK_ENABLE();
mbed_official 87:085cde657901 251
mbed_official 87:085cde657901 252 temp = ((uint32_t)0x0F) << (4 * (position & 0x03));
mbed_official 87:085cde657901 253 SYSCFG->EXTICR[position >> 2] &= ~temp;
mbed_official 87:085cde657901 254 SYSCFG->EXTICR[position >> 2] |= ((uint32_t)(__HAL_GET_GPIO_SOURCE(GPIOx)) << (4 * (position & 0x03)));
mbed_official 87:085cde657901 255
mbed_official 87:085cde657901 256 /* Clear EXTI line configuration */
mbed_official 87:085cde657901 257 EXTI->IMR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 258 EXTI->EMR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 259
mbed_official 87:085cde657901 260 if((GPIO_Init->Mode & GPIO_MODE_IT) == GPIO_MODE_IT)
mbed_official 87:085cde657901 261 {
mbed_official 87:085cde657901 262 EXTI->IMR |= iocurrent;
mbed_official 87:085cde657901 263 }
mbed_official 87:085cde657901 264 if((GPIO_Init->Mode & GPIO_MODE_EVT) == GPIO_MODE_EVT)
mbed_official 87:085cde657901 265 {
mbed_official 87:085cde657901 266 EXTI->EMR |= iocurrent;
mbed_official 87:085cde657901 267 }
mbed_official 87:085cde657901 268
mbed_official 87:085cde657901 269 /* Clear Rising Falling edge configuration */
mbed_official 87:085cde657901 270 EXTI->RTSR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 271 EXTI->FTSR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 272
mbed_official 87:085cde657901 273 if((GPIO_Init->Mode & RISING_EDGE) == RISING_EDGE)
mbed_official 87:085cde657901 274 {
mbed_official 87:085cde657901 275 EXTI->RTSR |= iocurrent;
mbed_official 87:085cde657901 276 }
mbed_official 87:085cde657901 277 if((GPIO_Init->Mode & FALLING_EDGE) == FALLING_EDGE)
mbed_official 87:085cde657901 278 {
mbed_official 87:085cde657901 279 EXTI->FTSR |= iocurrent;
mbed_official 87:085cde657901 280 }
mbed_official 87:085cde657901 281 }
mbed_official 87:085cde657901 282 }
mbed_official 87:085cde657901 283 }
mbed_official 87:085cde657901 284 }
mbed_official 87:085cde657901 285
mbed_official 87:085cde657901 286 /**
mbed_official 87:085cde657901 287 * @brief De-initializes the GPIOx peripheral registers to their default reset values.
mbed_official 87:085cde657901 288 * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
mbed_official 87:085cde657901 289 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
mbed_official 87:085cde657901 290 * @param GPIO_Pin: specifies the port bit to be written.
mbed_official 87:085cde657901 291 * This parameter can be one of GPIO_PIN_x where x can be (0..15).
mbed_official 87:085cde657901 292 * @retval None
mbed_official 87:085cde657901 293 */
mbed_official 87:085cde657901 294 void HAL_GPIO_DeInit(GPIO_TypeDef *GPIOx, uint32_t GPIO_Pin)
mbed_official 87:085cde657901 295 {
mbed_official 87:085cde657901 296 uint32_t position;
mbed_official 87:085cde657901 297 uint32_t ioposition = 0x00;
mbed_official 87:085cde657901 298 uint32_t iocurrent = 0x00;
mbed_official 87:085cde657901 299 uint32_t tmp = 0x00;
mbed_official 87:085cde657901 300
mbed_official 87:085cde657901 301 /* Configure the port pins */
mbed_official 87:085cde657901 302 for(position = 0; position < GPIO_NUMBER; position++)
mbed_official 87:085cde657901 303 {
mbed_official 87:085cde657901 304 /* Get the IO position */
mbed_official 87:085cde657901 305 ioposition = ((uint32_t)0x01) << position;
mbed_official 87:085cde657901 306 /* Get the current IO position */
mbed_official 87:085cde657901 307 iocurrent = (GPIO_Pin) & ioposition;
mbed_official 87:085cde657901 308
mbed_official 87:085cde657901 309 if(iocurrent == ioposition)
mbed_official 87:085cde657901 310 {
mbed_official 87:085cde657901 311 /*------------------------- GPIO Mode Configuration --------------------*/
mbed_official 87:085cde657901 312 /* Configure IO Direction in Input Floting Mode */
mbed_official 87:085cde657901 313 GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (position * 2));
mbed_official 87:085cde657901 314
mbed_official 87:085cde657901 315 /* Configure the default Alternate Function in current IO */
mbed_official 87:085cde657901 316 GPIOx->AFR[position >> 3] &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;
mbed_official 87:085cde657901 317
mbed_official 87:085cde657901 318 /* Configure the default value for IO Speed */
mbed_official 87:085cde657901 319 GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2));
mbed_official 87:085cde657901 320
mbed_official 87:085cde657901 321 /* Configure the default value IO Output Type */
mbed_official 87:085cde657901 322 GPIOx->OTYPER &= ~(GPIO_OTYPER_OT_0 << position) ;
mbed_official 87:085cde657901 323
mbed_official 87:085cde657901 324 /* Deactivate the Pull-up oand Pull-down resistor for the current IO */
mbed_official 87:085cde657901 325 GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << (position * 2));
mbed_official 87:085cde657901 326
mbed_official 87:085cde657901 327
mbed_official 87:085cde657901 328 /*------------------------- EXTI Mode Configuration --------------------*/
mbed_official 87:085cde657901 329 /* Configure the External Interrupt or event for the current IO */
mbed_official 87:085cde657901 330 tmp = ((uint32_t)0x0F) << (4 * (position & 0x03));
mbed_official 87:085cde657901 331 SYSCFG->EXTICR[position >> 2] &= ~tmp;
mbed_official 87:085cde657901 332
mbed_official 87:085cde657901 333 /* Clear EXTI line configuration */
mbed_official 87:085cde657901 334 EXTI->IMR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 335 EXTI->EMR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 336
mbed_official 87:085cde657901 337 /* Clear Rising Falling edge configuration */
mbed_official 87:085cde657901 338 EXTI->RTSR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 339 EXTI->FTSR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 340 }
mbed_official 87:085cde657901 341 }
mbed_official 87:085cde657901 342 }
mbed_official 87:085cde657901 343
mbed_official 87:085cde657901 344 /**
mbed_official 87:085cde657901 345 * @}
mbed_official 87:085cde657901 346 */
mbed_official 87:085cde657901 347
mbed_official 87:085cde657901 348 /** @defgroup GPIO_Group2 IO operation functions
mbed_official 87:085cde657901 349 * @brief GPIO Read and Write
mbed_official 87:085cde657901 350 *
mbed_official 87:085cde657901 351 @verbatim
mbed_official 87:085cde657901 352 ===============================================================================
mbed_official 87:085cde657901 353 ##### IO operation functions #####
mbed_official 87:085cde657901 354 ===============================================================================
mbed_official 87:085cde657901 355
mbed_official 87:085cde657901 356 @endverbatim
mbed_official 87:085cde657901 357 * @{
mbed_official 87:085cde657901 358 */
mbed_official 87:085cde657901 359
mbed_official 87:085cde657901 360 /**
mbed_official 87:085cde657901 361 * @brief Reads the specified input port pin.
mbed_official 87:085cde657901 362 * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
mbed_official 87:085cde657901 363 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
mbed_official 87:085cde657901 364 * @param GPIO_Pin: specifies the port bit to read.
mbed_official 87:085cde657901 365 * This parameter can be GPIO_PIN_x where x can be (0..15).
mbed_official 87:085cde657901 366 * @retval The input port pin value.
mbed_official 87:085cde657901 367 */
mbed_official 87:085cde657901 368 GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 87:085cde657901 369 {
mbed_official 87:085cde657901 370 GPIO_PinState bitstatus;
mbed_official 87:085cde657901 371
mbed_official 87:085cde657901 372 /* Check the parameters */
mbed_official 87:085cde657901 373 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 87:085cde657901 374
mbed_official 87:085cde657901 375 if((GPIOx->IDR & GPIO_Pin) != (uint32_t)GPIO_PIN_RESET)
mbed_official 87:085cde657901 376 {
mbed_official 87:085cde657901 377 bitstatus = GPIO_PIN_SET;
mbed_official 87:085cde657901 378 }
mbed_official 87:085cde657901 379 else
mbed_official 87:085cde657901 380 {
mbed_official 87:085cde657901 381 bitstatus = GPIO_PIN_RESET;
mbed_official 87:085cde657901 382 }
mbed_official 87:085cde657901 383 return bitstatus;
mbed_official 87:085cde657901 384 }
mbed_official 87:085cde657901 385
mbed_official 87:085cde657901 386 /**
mbed_official 87:085cde657901 387 * @brief Sets or clears the selected data port bit.
mbed_official 87:085cde657901 388 *
mbed_official 87:085cde657901 389 * @note This function uses GPIOx_BSRR register to allow atomic read/modify
mbed_official 87:085cde657901 390 * accesses. In this way, there is no risk of an IRQ occurring between
mbed_official 87:085cde657901 391 * the read and the modify access.
mbed_official 87:085cde657901 392 *
mbed_official 87:085cde657901 393 * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
mbed_official 87:085cde657901 394 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
mbed_official 87:085cde657901 395 * @param GPIO_Pin: specifies the port bit to be written.
mbed_official 87:085cde657901 396 * This parameter can be one of GPIO_PIN_x where x can be (0..15).
mbed_official 87:085cde657901 397 * @param PinState: specifies the value to be written to the selected bit.
mbed_official 87:085cde657901 398 * This parameter can be one of the GPIO_PinState enum values:
mbed_official 87:085cde657901 399 * @arg GPIO_BIT_RESET: to clear the port pin
mbed_official 87:085cde657901 400 * @arg GPIO_BIT_SET: to set the port pin
mbed_official 87:085cde657901 401 * @retval None
mbed_official 87:085cde657901 402 */
mbed_official 87:085cde657901 403 void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState)
mbed_official 87:085cde657901 404 {
mbed_official 87:085cde657901 405 /* Check the parameters */
mbed_official 87:085cde657901 406 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 87:085cde657901 407 assert_param(IS_GPIO_PIN_ACTION(PinState));
mbed_official 87:085cde657901 408
mbed_official 87:085cde657901 409 if(PinState != GPIO_PIN_RESET)
mbed_official 87:085cde657901 410 {
mbed_official 87:085cde657901 411 GPIOx->BSRRL = GPIO_Pin;
mbed_official 87:085cde657901 412 }
mbed_official 87:085cde657901 413 else
mbed_official 87:085cde657901 414 {
mbed_official 87:085cde657901 415 GPIOx->BSRRH = GPIO_Pin ;
mbed_official 87:085cde657901 416 }
mbed_official 87:085cde657901 417 }
mbed_official 87:085cde657901 418
mbed_official 87:085cde657901 419 /**
mbed_official 87:085cde657901 420 * @brief Toggles the specified GPIO pins.
mbed_official 87:085cde657901 421 * @param GPIOx: Where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
mbed_official 87:085cde657901 422 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
mbed_official 87:085cde657901 423 * @param GPIO_Pin: Specifies the pins to be toggled.
mbed_official 87:085cde657901 424 * @retval None
mbed_official 87:085cde657901 425 */
mbed_official 87:085cde657901 426 void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 87:085cde657901 427 {
mbed_official 87:085cde657901 428 /* Check the parameters */
mbed_official 87:085cde657901 429 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 87:085cde657901 430
mbed_official 87:085cde657901 431 GPIOx->ODR ^= GPIO_Pin;
mbed_official 87:085cde657901 432 }
mbed_official 87:085cde657901 433
mbed_official 87:085cde657901 434 /**
mbed_official 87:085cde657901 435 * @brief This function handles EXTI interrupt request.
mbed_official 87:085cde657901 436 * @param GPIO_Pin: Specifies the pins connected EXTI line
mbed_official 87:085cde657901 437 * @retval None
mbed_official 87:085cde657901 438 */
mbed_official 87:085cde657901 439 void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)
mbed_official 87:085cde657901 440 {
mbed_official 87:085cde657901 441 /* EXTI line interrupt detected */
mbed_official 87:085cde657901 442 if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET)
mbed_official 87:085cde657901 443 {
mbed_official 87:085cde657901 444 __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin);
mbed_official 87:085cde657901 445 HAL_GPIO_EXTI_Callback(GPIO_Pin);
mbed_official 87:085cde657901 446 }
mbed_official 87:085cde657901 447 }
mbed_official 87:085cde657901 448
mbed_official 87:085cde657901 449 /**
mbed_official 87:085cde657901 450 * @brief EXTI line detection callbacks.
mbed_official 87:085cde657901 451 * @param GPIO_Pin: Specifies the pins connected EXTI line
mbed_official 87:085cde657901 452 * @retval None
mbed_official 87:085cde657901 453 */
mbed_official 87:085cde657901 454 __weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
mbed_official 87:085cde657901 455 {
mbed_official 87:085cde657901 456 /* NOTE: This function Should not be modified, when the callback is needed,
mbed_official 87:085cde657901 457 the HAL_GPIO_EXTI_Callback could be implemented in the user file
mbed_official 87:085cde657901 458 */
mbed_official 87:085cde657901 459 }
mbed_official 87:085cde657901 460
mbed_official 87:085cde657901 461 /**
mbed_official 87:085cde657901 462 * @}
mbed_official 87:085cde657901 463 */
mbed_official 87:085cde657901 464
mbed_official 87:085cde657901 465
mbed_official 87:085cde657901 466 /**
mbed_official 87:085cde657901 467 * @}
mbed_official 87:085cde657901 468 */
mbed_official 87:085cde657901 469
mbed_official 87:085cde657901 470 #endif /* HAL_GPIO_MODULE_ENABLED */
mbed_official 87:085cde657901 471 /**
mbed_official 87:085cde657901 472 * @}
mbed_official 87:085cde657901 473 */
mbed_official 87:085cde657901 474
mbed_official 87:085cde657901 475 /**
mbed_official 87:085cde657901 476 * @}
mbed_official 87:085cde657901 477 */
mbed_official 87:085cde657901 478
mbed_official 87:085cde657901 479 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/