shao ziyang / mbed-src-kl05

mbed library sources

Dependents:   frdm_kl05z_gpio_test

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_NUCLEO_F401RE/stm32f4xx_hal_gpio.c@323:9e901b0a5aa1, 2014-09-13 (annotated)

Committer:
shaoziyang
Date:
Sat Sep 13 14:25:46 2014 +0000
Revision:
323:9e901b0a5aa1
Parent:
226:b062af740e40 
test with CLOCK_SETUP = 0

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 226:b062af740e40 5 * @version V1.1.0RC2
mbed_official 226:b062af740e40 6 * @date 14-May-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 226:b062af740e40 12 *
mbed_official 87:085cde657901 13 @verbatim
mbed_official 87:085cde657901 14 ==============================================================================
mbed_official 87:085cde657901 15 ##### GPIO Peripheral features #####
mbed_official 226:b062af740e40 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 226:b062af740e40 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 226:b062af740e40 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 226:b062af740e40 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 226:b062af740e40 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 226:b062af740e40 49
mbed_official 87:085cde657901 50 ##### How to use this driver #####
mbed_official 87:085cde657901 51 ==============================================================================
mbed_official 226:b062af740e40 52 [..]
mbed_official 87:085cde657901 53 (#) Enable the GPIO AHB clock using the following function: __GPIOx_CLK_ENABLE().
mbed_official 226:b062af740e40 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 226:b062af740e40 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 226:b062af740e40 216 temp = GPIOx->AFR[position >> 3];
mbed_official 226:b062af740e40 217 temp &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;
mbed_official 226:b062af740e40 218 temp |= ((uint32_t)(GPIO_Init->Alternate) << (((uint32_t)position & (uint32_t)0x07) * 4));
mbed_official 226:b062af740e40 219 GPIOx->AFR[position >> 3] = temp;
mbed_official 87:085cde657901 220 }
mbed_official 87:085cde657901 221
mbed_official 87:085cde657901 222 /* Configure IO Direction mode (Input, Output, Alternate or Analog) */
mbed_official 226:b062af740e40 223 temp = GPIOx->MODER;
mbed_official 226:b062af740e40 224 temp &= ~(GPIO_MODER_MODER0 << (position * 2));
mbed_official 226:b062af740e40 225 temp |= ((GPIO_Init->Mode & GPIO_MODE) << (position * 2));
mbed_official 226:b062af740e40 226 GPIOx->MODER = temp;
mbed_official 87:085cde657901 227
mbed_official 87:085cde657901 228 /* In case of Output or Alternate function mode selection */
mbed_official 87:085cde657901 229 if((GPIO_Init->Mode == GPIO_MODE_OUTPUT_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_PP) ||
mbed_official 87:085cde657901 230 (GPIO_Init->Mode == GPIO_MODE_OUTPUT_OD) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
mbed_official 87:085cde657901 231 {
mbed_official 87:085cde657901 232 /* Check the Speed parameter */
mbed_official 87:085cde657901 233 assert_param(IS_GPIO_SPEED(GPIO_Init->Speed));
mbed_official 87:085cde657901 234 /* Configure the IO Speed */
mbed_official 226:b062af740e40 235 temp = GPIOx->OSPEEDR;
mbed_official 226:b062af740e40 236 temp &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2));
mbed_official 226:b062af740e40 237 temp |= (GPIO_Init->Speed << (position * 2));
mbed_official 226:b062af740e40 238 GPIOx->OSPEEDR = temp;
mbed_official 87:085cde657901 239
mbed_official 87:085cde657901 240 /* Configure the IO Output Type */
mbed_official 226:b062af740e40 241 temp = GPIOx->OTYPER;
mbed_official 226:b062af740e40 242 temp &= ~(GPIO_OTYPER_OT_0 << position) ;
mbed_official 226:b062af740e40 243 temp |= (((GPIO_Init->Mode & GPIO_OUTPUT_TYPE) >> 4) << position);
mbed_official 226:b062af740e40 244 GPIOx->OTYPER = temp;
mbed_official 87:085cde657901 245 }
mbed_official 87:085cde657901 246
mbed_official 87:085cde657901 247 /* Activate the Pull-up or Pull down resistor for the current IO */
mbed_official 226:b062af740e40 248 temp = GPIOx->PUPDR;
mbed_official 226:b062af740e40 249 temp &= ~(GPIO_PUPDR_PUPDR0 << (position * 2));
mbed_official 226:b062af740e40 250 temp |= ((GPIO_Init->Pull) << (position * 2));
mbed_official 226:b062af740e40 251 GPIOx->PUPDR = temp;
mbed_official 87:085cde657901 252
mbed_official 87:085cde657901 253 /*--------------------- EXTI Mode Configuration ------------------------*/
mbed_official 87:085cde657901 254 /* Configure the External Interrupt or event for the current IO */
mbed_official 87:085cde657901 255 if((GPIO_Init->Mode & EXTI_MODE) == EXTI_MODE)
mbed_official 87:085cde657901 256 {
mbed_official 87:085cde657901 257 /* Enable SYSCFG Clock */
mbed_official 87:085cde657901 258 __SYSCFG_CLK_ENABLE();
mbed_official 87:085cde657901 259
mbed_official 226:b062af740e40 260 temp = SYSCFG->EXTICR[position >> 2];
mbed_official 226:b062af740e40 261 temp &= ~(((uint32_t)0x0F) << (4 * (position & 0x03)));
mbed_official 226:b062af740e40 262 temp |= ((uint32_t)(__HAL_GET_GPIO_SOURCE(GPIOx)) << (4 * (position & 0x03)));
mbed_official 226:b062af740e40 263 SYSCFG->EXTICR[position >> 2] = temp;
mbed_official 226:b062af740e40 264
mbed_official 87:085cde657901 265 /* Clear EXTI line configuration */
mbed_official 226:b062af740e40 266 temp = EXTI->IMR;
mbed_official 226:b062af740e40 267 temp &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 268 if((GPIO_Init->Mode & GPIO_MODE_IT) == GPIO_MODE_IT)
mbed_official 87:085cde657901 269 {
mbed_official 226:b062af740e40 270 temp |= iocurrent;
mbed_official 87:085cde657901 271 }
mbed_official 226:b062af740e40 272 EXTI->IMR = temp;
mbed_official 226:b062af740e40 273
mbed_official 226:b062af740e40 274 temp = EXTI->EMR;
mbed_official 226:b062af740e40 275 temp &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 276 if((GPIO_Init->Mode & GPIO_MODE_EVT) == GPIO_MODE_EVT)
mbed_official 87:085cde657901 277 {
mbed_official 226:b062af740e40 278 temp |= iocurrent;
mbed_official 87:085cde657901 279 }
mbed_official 226:b062af740e40 280 EXTI->EMR = temp;
mbed_official 87:085cde657901 281
mbed_official 87:085cde657901 282 /* Clear Rising Falling edge configuration */
mbed_official 226:b062af740e40 283 temp = EXTI->RTSR;
mbed_official 226:b062af740e40 284 temp &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 285 if((GPIO_Init->Mode & RISING_EDGE) == RISING_EDGE)
mbed_official 87:085cde657901 286 {
mbed_official 226:b062af740e40 287 temp |= iocurrent;
mbed_official 87:085cde657901 288 }
mbed_official 226:b062af740e40 289 EXTI->RTSR = temp;
mbed_official 226:b062af740e40 290
mbed_official 226:b062af740e40 291 temp = EXTI->FTSR;
mbed_official 226:b062af740e40 292 temp &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 293 if((GPIO_Init->Mode & FALLING_EDGE) == FALLING_EDGE)
mbed_official 87:085cde657901 294 {
mbed_official 226:b062af740e40 295 temp |= iocurrent;
mbed_official 87:085cde657901 296 }
mbed_official 226:b062af740e40 297 EXTI->FTSR = temp;
mbed_official 87:085cde657901 298 }
mbed_official 87:085cde657901 299 }
mbed_official 87:085cde657901 300 }
mbed_official 87:085cde657901 301 }
mbed_official 87:085cde657901 302
mbed_official 87:085cde657901 303 /**
mbed_official 87:085cde657901 304 * @brief De-initializes the GPIOx peripheral registers to their default reset values.
mbed_official 87:085cde657901 305 * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
mbed_official 87:085cde657901 306 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
mbed_official 87:085cde657901 307 * @param GPIO_Pin: specifies the port bit to be written.
mbed_official 87:085cde657901 308 * This parameter can be one of GPIO_PIN_x where x can be (0..15).
mbed_official 87:085cde657901 309 * @retval None
mbed_official 87:085cde657901 310 */
mbed_official 87:085cde657901 311 void HAL_GPIO_DeInit(GPIO_TypeDef *GPIOx, uint32_t GPIO_Pin)
mbed_official 87:085cde657901 312 {
mbed_official 87:085cde657901 313 uint32_t position;
mbed_official 87:085cde657901 314 uint32_t ioposition = 0x00;
mbed_official 87:085cde657901 315 uint32_t iocurrent = 0x00;
mbed_official 87:085cde657901 316 uint32_t tmp = 0x00;
mbed_official 87:085cde657901 317
mbed_official 87:085cde657901 318 /* Configure the port pins */
mbed_official 87:085cde657901 319 for(position = 0; position < GPIO_NUMBER; position++)
mbed_official 87:085cde657901 320 {
mbed_official 87:085cde657901 321 /* Get the IO position */
mbed_official 87:085cde657901 322 ioposition = ((uint32_t)0x01) << position;
mbed_official 87:085cde657901 323 /* Get the current IO position */
mbed_official 87:085cde657901 324 iocurrent = (GPIO_Pin) & ioposition;
mbed_official 87:085cde657901 325
mbed_official 87:085cde657901 326 if(iocurrent == ioposition)
mbed_official 87:085cde657901 327 {
mbed_official 87:085cde657901 328 /*------------------------- GPIO Mode Configuration --------------------*/
mbed_official 87:085cde657901 329 /* Configure IO Direction in Input Floting Mode */
mbed_official 87:085cde657901 330 GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (position * 2));
mbed_official 87:085cde657901 331
mbed_official 87:085cde657901 332 /* Configure the default Alternate Function in current IO */
mbed_official 87:085cde657901 333 GPIOx->AFR[position >> 3] &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;
mbed_official 87:085cde657901 334
mbed_official 87:085cde657901 335 /* Configure the default value for IO Speed */
mbed_official 87:085cde657901 336 GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2));
mbed_official 87:085cde657901 337
mbed_official 87:085cde657901 338 /* Configure the default value IO Output Type */
mbed_official 87:085cde657901 339 GPIOx->OTYPER &= ~(GPIO_OTYPER_OT_0 << position) ;
mbed_official 87:085cde657901 340
mbed_official 87:085cde657901 341 /* Deactivate the Pull-up oand Pull-down resistor for the current IO */
mbed_official 87:085cde657901 342 GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << (position * 2));
mbed_official 87:085cde657901 343
mbed_official 87:085cde657901 344 /*------------------------- EXTI Mode Configuration --------------------*/
mbed_official 87:085cde657901 345 /* Configure the External Interrupt or event for the current IO */
mbed_official 87:085cde657901 346 tmp = ((uint32_t)0x0F) << (4 * (position & 0x03));
mbed_official 87:085cde657901 347 SYSCFG->EXTICR[position >> 2] &= ~tmp;
mbed_official 87:085cde657901 348
mbed_official 87:085cde657901 349 /* Clear EXTI line configuration */
mbed_official 87:085cde657901 350 EXTI->IMR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 351 EXTI->EMR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 352
mbed_official 87:085cde657901 353 /* Clear Rising Falling edge configuration */
mbed_official 87:085cde657901 354 EXTI->RTSR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 355 EXTI->FTSR &= ~((uint32_t)iocurrent);
mbed_official 87:085cde657901 356 }
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 * @}
mbed_official 87:085cde657901 362 */
mbed_official 87:085cde657901 363
mbed_official 87:085cde657901 364 /** @defgroup GPIO_Group2 IO operation functions
mbed_official 87:085cde657901 365 * @brief GPIO Read and Write
mbed_official 87:085cde657901 366 *
mbed_official 87:085cde657901 367 @verbatim
mbed_official 87:085cde657901 368 ===============================================================================
mbed_official 87:085cde657901 369 ##### IO operation functions #####
mbed_official 87:085cde657901 370 ===============================================================================
mbed_official 87:085cde657901 371
mbed_official 87:085cde657901 372 @endverbatim
mbed_official 87:085cde657901 373 * @{
mbed_official 87:085cde657901 374 */
mbed_official 87:085cde657901 375
mbed_official 87:085cde657901 376 /**
mbed_official 87:085cde657901 377 * @brief Reads the specified input port pin.
mbed_official 87:085cde657901 378 * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
mbed_official 87:085cde657901 379 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
mbed_official 87:085cde657901 380 * @param GPIO_Pin: specifies the port bit to read.
mbed_official 87:085cde657901 381 * This parameter can be GPIO_PIN_x where x can be (0..15).
mbed_official 87:085cde657901 382 * @retval The input port pin value.
mbed_official 87:085cde657901 383 */
mbed_official 87:085cde657901 384 GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 87:085cde657901 385 {
mbed_official 87:085cde657901 386 GPIO_PinState bitstatus;
mbed_official 87:085cde657901 387
mbed_official 87:085cde657901 388 /* Check the parameters */
mbed_official 87:085cde657901 389 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 87:085cde657901 390
mbed_official 87:085cde657901 391 if((GPIOx->IDR & GPIO_Pin) != (uint32_t)GPIO_PIN_RESET)
mbed_official 87:085cde657901 392 {
mbed_official 87:085cde657901 393 bitstatus = GPIO_PIN_SET;
mbed_official 87:085cde657901 394 }
mbed_official 87:085cde657901 395 else
mbed_official 87:085cde657901 396 {
mbed_official 87:085cde657901 397 bitstatus = GPIO_PIN_RESET;
mbed_official 87:085cde657901 398 }
mbed_official 87:085cde657901 399 return bitstatus;
mbed_official 87:085cde657901 400 }
mbed_official 87:085cde657901 401
mbed_official 87:085cde657901 402 /**
mbed_official 87:085cde657901 403 * @brief Sets or clears the selected data port bit.
mbed_official 87:085cde657901 404 *
mbed_official 87:085cde657901 405 * @note This function uses GPIOx_BSRR register to allow atomic read/modify
mbed_official 87:085cde657901 406 * accesses. In this way, there is no risk of an IRQ occurring between
mbed_official 87:085cde657901 407 * the read and the modify access.
mbed_official 87:085cde657901 408 *
mbed_official 87:085cde657901 409 * @param GPIOx: where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
mbed_official 87:085cde657901 410 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
mbed_official 87:085cde657901 411 * @param GPIO_Pin: specifies the port bit to be written.
mbed_official 87:085cde657901 412 * This parameter can be one of GPIO_PIN_x where x can be (0..15).
mbed_official 87:085cde657901 413 * @param PinState: specifies the value to be written to the selected bit.
mbed_official 87:085cde657901 414 * This parameter can be one of the GPIO_PinState enum values:
mbed_official 226:b062af740e40 415 * @arg GPIO_PIN_RESET: to clear the port pin
mbed_official 226:b062af740e40 416 * @arg GPIO_PIN_SET: to set the port pin
mbed_official 87:085cde657901 417 * @retval None
mbed_official 87:085cde657901 418 */
mbed_official 87:085cde657901 419 void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState)
mbed_official 87:085cde657901 420 {
mbed_official 87:085cde657901 421 /* Check the parameters */
mbed_official 87:085cde657901 422 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 87:085cde657901 423 assert_param(IS_GPIO_PIN_ACTION(PinState));
mbed_official 87:085cde657901 424
mbed_official 87:085cde657901 425 if(PinState != GPIO_PIN_RESET)
mbed_official 87:085cde657901 426 {
mbed_official 87:085cde657901 427 GPIOx->BSRRL = GPIO_Pin;
mbed_official 87:085cde657901 428 }
mbed_official 87:085cde657901 429 else
mbed_official 87:085cde657901 430 {
mbed_official 87:085cde657901 431 GPIOx->BSRRH = GPIO_Pin ;
mbed_official 87:085cde657901 432 }
mbed_official 87:085cde657901 433 }
mbed_official 87:085cde657901 434
mbed_official 87:085cde657901 435 /**
mbed_official 87:085cde657901 436 * @brief Toggles the specified GPIO pins.
mbed_official 87:085cde657901 437 * @param GPIOx: Where x can be (A..K) to select the GPIO peripheral for STM32F429X device or
mbed_official 87:085cde657901 438 * x can be (A..I) to select the GPIO peripheral for STM32F40XX and STM32F427X devices.
mbed_official 87:085cde657901 439 * @param GPIO_Pin: Specifies the pins to be toggled.
mbed_official 87:085cde657901 440 * @retval None
mbed_official 87:085cde657901 441 */
mbed_official 87:085cde657901 442 void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 87:085cde657901 443 {
mbed_official 87:085cde657901 444 /* Check the parameters */
mbed_official 87:085cde657901 445 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 87:085cde657901 446
mbed_official 87:085cde657901 447 GPIOx->ODR ^= GPIO_Pin;
mbed_official 87:085cde657901 448 }
mbed_official 87:085cde657901 449
mbed_official 87:085cde657901 450 /**
mbed_official 226:b062af740e40 451 * @brief Locks GPIO Pins configuration registers.
mbed_official 226:b062af740e40 452 * @note The locked registers are GPIOx_MODER, GPIOx_OTYPER, GPIOx_OSPEEDR,
mbed_official 226:b062af740e40 453 * GPIOx_PUPDR, GPIOx_AFRL and GPIOx_AFRH.
mbed_official 226:b062af740e40 454 * @note The configuration of the locked GPIO pins can no longer be modified
mbed_official 226:b062af740e40 455 * until the next reset.
mbed_official 226:b062af740e40 456 * @param GPIOx: where x can be (A..F) to select the GPIO peripheral for STM32F4 family
mbed_official 226:b062af740e40 457 * @param GPIO_Pin: specifies the port bit to be locked.
mbed_official 226:b062af740e40 458 * This parameter can be any combination of GPIO_PIN_x where x can be (0..15).
mbed_official 226:b062af740e40 459 * @retval None
mbed_official 226:b062af740e40 460 */
mbed_official 226:b062af740e40 461 HAL_StatusTypeDef HAL_GPIO_LockPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 226:b062af740e40 462 {
mbed_official 226:b062af740e40 463 __IO uint32_t tmp = GPIO_LCKR_LCKK;
mbed_official 226:b062af740e40 464
mbed_official 226:b062af740e40 465 /* Check the parameters */
mbed_official 226:b062af740e40 466 assert_param(IS_GPIO_PIN(GPIO_Pin));
mbed_official 226:b062af740e40 467
mbed_official 226:b062af740e40 468 /* Apply lock key write sequence */
mbed_official 226:b062af740e40 469 tmp |= GPIO_Pin;
mbed_official 226:b062af740e40 470 /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */
mbed_official 226:b062af740e40 471 GPIOx->LCKR = tmp;
mbed_official 226:b062af740e40 472 /* Reset LCKx bit(s): LCKK='0' + LCK[15-0] */
mbed_official 226:b062af740e40 473 GPIOx->LCKR = GPIO_Pin;
mbed_official 226:b062af740e40 474 /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */
mbed_official 226:b062af740e40 475 GPIOx->LCKR = tmp;
mbed_official 226:b062af740e40 476 /* Read LCKK bit*/
mbed_official 226:b062af740e40 477 tmp = GPIOx->LCKR;
mbed_official 226:b062af740e40 478
mbed_official 226:b062af740e40 479 if(GPIOx->LCKR & GPIO_LCKR_LCKK)
mbed_official 226:b062af740e40 480 {
mbed_official 226:b062af740e40 481 return HAL_OK;
mbed_official 226:b062af740e40 482 }
mbed_official 226:b062af740e40 483 else
mbed_official 226:b062af740e40 484 {
mbed_official 226:b062af740e40 485 return HAL_ERROR;
mbed_official 226:b062af740e40 486 }
mbed_official 226:b062af740e40 487 }
mbed_official 226:b062af740e40 488
mbed_official 226:b062af740e40 489 /**
mbed_official 87:085cde657901 490 * @brief This function handles EXTI interrupt request.
mbed_official 87:085cde657901 491 * @param GPIO_Pin: Specifies the pins connected EXTI line
mbed_official 87:085cde657901 492 * @retval None
mbed_official 87:085cde657901 493 */
mbed_official 87:085cde657901 494 void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)
mbed_official 87:085cde657901 495 {
mbed_official 87:085cde657901 496 /* EXTI line interrupt detected */
mbed_official 87:085cde657901 497 if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET)
mbed_official 87:085cde657901 498 {
mbed_official 87:085cde657901 499 __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin);
mbed_official 87:085cde657901 500 HAL_GPIO_EXTI_Callback(GPIO_Pin);
mbed_official 87:085cde657901 501 }
mbed_official 87:085cde657901 502 }
mbed_official 87:085cde657901 503
mbed_official 87:085cde657901 504 /**
mbed_official 87:085cde657901 505 * @brief EXTI line detection callbacks.
mbed_official 87:085cde657901 506 * @param GPIO_Pin: Specifies the pins connected EXTI line
mbed_official 87:085cde657901 507 * @retval None
mbed_official 87:085cde657901 508 */
mbed_official 87:085cde657901 509 __weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
mbed_official 87:085cde657901 510 {
mbed_official 87:085cde657901 511 /* NOTE: This function Should not be modified, when the callback is needed,
mbed_official 87:085cde657901 512 the HAL_GPIO_EXTI_Callback could be implemented in the user file
mbed_official 87:085cde657901 513 */
mbed_official 87:085cde657901 514 }
mbed_official 87:085cde657901 515
mbed_official 87:085cde657901 516 /**
mbed_official 87:085cde657901 517 * @}
mbed_official 87:085cde657901 518 */
mbed_official 87:085cde657901 519
mbed_official 87:085cde657901 520
mbed_official 87:085cde657901 521 /**
mbed_official 87:085cde657901 522 * @}
mbed_official 87:085cde657901 523 */
mbed_official 87:085cde657901 524
mbed_official 87:085cde657901 525 #endif /* HAL_GPIO_MODULE_ENABLED */
mbed_official 87:085cde657901 526 /**
mbed_official 87:085cde657901 527 * @}
mbed_official 87:085cde657901 528 */
mbed_official 87:085cde657901 529
mbed_official 87:085cde657901 530 /**
mbed_official 87:085cde657901 531 * @}
mbed_official 87:085cde657901 532 */
mbed_official 87:085cde657901 533
mbed_official 87:085cde657901 534 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/