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_L053R8/stm32l0xx_hal_gpio.c@323:9e901b0a5aa1, 2014-09-13 (annotated)

Committer:
shaoziyang
Date:
Sat Sep 13 14:25:46 2014 +0000
Revision:
323:9e901b0a5aa1
Parent:
181:a4cbdfbbd2f4 
test with CLOCK_SETUP = 0

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 181:a4cbdfbbd2f4 1 /**
mbed_official 181:a4cbdfbbd2f4 2 ******************************************************************************
mbed_official 181:a4cbdfbbd2f4 3 * @file stm32l0xx_hal_gpio.c
mbed_official 181:a4cbdfbbd2f4 4 * @author MCD Application Team
mbed_official 181:a4cbdfbbd2f4 5 * @version V1.0.0
mbed_official 181:a4cbdfbbd2f4 6 * @date 22-April-2014
mbed_official 181:a4cbdfbbd2f4 7 * @brief GPIO HAL module driver.
mbed_official 181:a4cbdfbbd2f4 8 * This file provides firmware functions to manage the following
mbed_official 181:a4cbdfbbd2f4 9 * functionalities of the General Purpose Input/Output (GPIO) peripheral:
mbed_official 181:a4cbdfbbd2f4 10 * + Initialization and de-initialization functions
mbed_official 181:a4cbdfbbd2f4 11 * + IO operation functions
mbed_official 181:a4cbdfbbd2f4 12 *
mbed_official 181:a4cbdfbbd2f4 13 @verbatim
mbed_official 181:a4cbdfbbd2f4 14 ==============================================================================
mbed_official 181:a4cbdfbbd2f4 15 ##### GPIO Peripheral features #####
mbed_official 181:a4cbdfbbd2f4 16 ==============================================================================
mbed_official 181:a4cbdfbbd2f4 17 [..]
mbed_official 181:a4cbdfbbd2f4 18 (+) Each port bit of the general-purpose I/O (GPIO) ports can be individually
mbed_official 181:a4cbdfbbd2f4 19 configured by software in several modes:
mbed_official 181:a4cbdfbbd2f4 20 (++) Input mode
mbed_official 181:a4cbdfbbd2f4 21 (++) Analog mode
mbed_official 181:a4cbdfbbd2f4 22 (++) Output mode
mbed_official 181:a4cbdfbbd2f4 23 (++) Alternate function mode
mbed_official 181:a4cbdfbbd2f4 24 (++) External interrupt/event lines
mbed_official 181:a4cbdfbbd2f4 25
mbed_official 181:a4cbdfbbd2f4 26 (+) During and just after reset, the alternate functions and external interrupt
mbed_official 181:a4cbdfbbd2f4 27 lines are not active and the I/O ports are configured in input floating mode.
mbed_official 181:a4cbdfbbd2f4 28
mbed_official 181:a4cbdfbbd2f4 29 (+) All GPIO pins have weak internal pull-up and pull-down resistors, which can be
mbed_official 181:a4cbdfbbd2f4 30 activated or not.
mbed_official 181:a4cbdfbbd2f4 31
mbed_official 181:a4cbdfbbd2f4 32 (+) In Output or Alternate mode, each IO can be configured on open-drain or push-pull
mbed_official 181:a4cbdfbbd2f4 33 type and the IO speed can be selected depending on the VDD value.
mbed_official 181:a4cbdfbbd2f4 34
mbed_official 181:a4cbdfbbd2f4 35 (+) The microcontroller IO pins are connected to onboard peripherals/modules through a
mbed_official 181:a4cbdfbbd2f4 36 multiplexer that allows only one peripheral alternate function (AF) connected
mbed_official 181:a4cbdfbbd2f4 37 to an IO pin at a time. In this way, there can be no conflict between peripherals
mbed_official 181:a4cbdfbbd2f4 38 sharing the same IO pin.
mbed_official 181:a4cbdfbbd2f4 39
mbed_official 181:a4cbdfbbd2f4 40 (+) All ports have external interrupt/event capability. To use external interrupt
mbed_official 181:a4cbdfbbd2f4 41 lines, the port must be configured in input mode. All available GPIO pins are
mbed_official 181:a4cbdfbbd2f4 42 connected to the 16 external interrupt/event lines from EXTI0 to EXTI15.
mbed_official 181:a4cbdfbbd2f4 43
mbed_official 181:a4cbdfbbd2f4 44 (+) The external interrupt/event controller consists of up to 23 edge detectors
mbed_official 181:a4cbdfbbd2f4 45 (16 lines are connected to GPIO) for generating event/interrupt requests (each
mbed_official 181:a4cbdfbbd2f4 46 input line can be independently configured to select the type (interrupt or event)
mbed_official 181:a4cbdfbbd2f4 47 and the corresponding trigger event (rising or falling or both). Each line can
mbed_official 181:a4cbdfbbd2f4 48 also be masked independently.
mbed_official 181:a4cbdfbbd2f4 49
mbed_official 181:a4cbdfbbd2f4 50 ##### How to use this driver #####
mbed_official 181:a4cbdfbbd2f4 51 ==============================================================================
mbed_official 181:a4cbdfbbd2f4 52 [..]
mbed_official 181:a4cbdfbbd2f4 53 (#) Enable the GPIO IOPORT clock using the following function: __GPIOx_CLK_ENABLE().
mbed_official 181:a4cbdfbbd2f4 54
mbed_official 181:a4cbdfbbd2f4 55 (#) In case of external interrupt/event mode selection, enable the SYSCFG clock
mbed_official 181:a4cbdfbbd2f4 56 using the following function __SYSCFG_CLK_ENABLE().
mbed_official 181:a4cbdfbbd2f4 57
mbed_official 181:a4cbdfbbd2f4 58 (#) Configure the GPIO pin(s) using HAL_GPIO_Init().
mbed_official 181:a4cbdfbbd2f4 59 (++) Configure the IO mode using "Mode" member from GPIO_InitTypeDef structure
mbed_official 181:a4cbdfbbd2f4 60 (++) Activate Pull-up, Pull-down resistor using "Pull" member from GPIO_InitTypeDef
mbed_official 181:a4cbdfbbd2f4 61 structure.
mbed_official 181:a4cbdfbbd2f4 62 (++) In case of Output or alternate function mode selection: the speed is
mbed_official 181:a4cbdfbbd2f4 63 configured through "Speed" member from GPIO_InitTypeDef structure.
mbed_official 181:a4cbdfbbd2f4 64 (++) In alternate mode is selection, the alternate function connected to the IO
mbed_official 181:a4cbdfbbd2f4 65 is configured through "Alternate" member from GPIO_InitTypeDef structure.
mbed_official 181:a4cbdfbbd2f4 66 (++) Analog mode is required when a pin is to be used as ADC channel
mbed_official 181:a4cbdfbbd2f4 67 or DAC output.
mbed_official 181:a4cbdfbbd2f4 68 (++) In case of external interrupt/event selection the "Mode" member from
mbed_official 181:a4cbdfbbd2f4 69 GPIO_InitTypeDef structure select the type (interrupt or event) and
mbed_official 181:a4cbdfbbd2f4 70 the corresponding trigger event (rising or falling or both).
mbed_official 181:a4cbdfbbd2f4 71
mbed_official 181:a4cbdfbbd2f4 72 (#) In case of external interrupt/event mode selection, configure NVIC IRQ priority
mbed_official 181:a4cbdfbbd2f4 73 mapped to the EXTI line using HAL_NVIC_SetPriority() and enable it using
mbed_official 181:a4cbdfbbd2f4 74 HAL_NVIC_EnableIRQ().
mbed_official 181:a4cbdfbbd2f4 75
mbed_official 181:a4cbdfbbd2f4 76 (#) To get the level of a pin configured in input mode use HAL_GPIO_ReadPin().
mbed_official 181:a4cbdfbbd2f4 77
mbed_official 181:a4cbdfbbd2f4 78 (#) To set/reset the level of a pin configured in output mode use
mbed_official 181:a4cbdfbbd2f4 79 HAL_GPIO_WritePin()/HAL_GPIO_TogglePin().
mbed_official 181:a4cbdfbbd2f4 80
mbed_official 181:a4cbdfbbd2f4 81 (#) During and just after reset, the alternate functions are not
mbed_official 181:a4cbdfbbd2f4 82 active and the GPIO pins are configured in input floating mode (except JTAG
mbed_official 181:a4cbdfbbd2f4 83 pins).
mbed_official 181:a4cbdfbbd2f4 84
mbed_official 181:a4cbdfbbd2f4 85 (#) The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as general purpose
mbed_official 181:a4cbdfbbd2f4 86 (PC14 and PC15, respectively) when the LSE oscillator is off. The LSE has
mbed_official 181:a4cbdfbbd2f4 87 priority over the GPIO function.
mbed_official 181:a4cbdfbbd2f4 88
mbed_official 181:a4cbdfbbd2f4 89 (#) The HSE oscillator pins OSC_IN/OSC_OUT can be used as
mbed_official 181:a4cbdfbbd2f4 90 general purpose PH0 and PH1, respectively, when the HSE oscillator is off.
mbed_official 181:a4cbdfbbd2f4 91 The HSE has priority over the GPIO function.
mbed_official 181:a4cbdfbbd2f4 92
mbed_official 181:a4cbdfbbd2f4 93 @endverbatim
mbed_official 181:a4cbdfbbd2f4 94 ******************************************************************************
mbed_official 181:a4cbdfbbd2f4 95 * @attention
mbed_official 181:a4cbdfbbd2f4 96 *
mbed_official 181:a4cbdfbbd2f4 97 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 181:a4cbdfbbd2f4 98 *
mbed_official 181:a4cbdfbbd2f4 99 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 181:a4cbdfbbd2f4 100 * are permitted provided that the following conditions are met:
mbed_official 181:a4cbdfbbd2f4 101 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 102 * this list of conditions and the following disclaimer.
mbed_official 181:a4cbdfbbd2f4 103 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 181:a4cbdfbbd2f4 104 * this list of conditions and the following disclaimer in the documentation
mbed_official 181:a4cbdfbbd2f4 105 * and/or other materials provided with the distribution.
mbed_official 181:a4cbdfbbd2f4 106 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 181:a4cbdfbbd2f4 107 * may be used to endorse or promote products derived from this software
mbed_official 181:a4cbdfbbd2f4 108 * without specific prior written permission.
mbed_official 181:a4cbdfbbd2f4 109 *
mbed_official 181:a4cbdfbbd2f4 110 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 181:a4cbdfbbd2f4 111 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 181:a4cbdfbbd2f4 112 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 181:a4cbdfbbd2f4 113 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 181:a4cbdfbbd2f4 114 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 181:a4cbdfbbd2f4 115 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 181:a4cbdfbbd2f4 116 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 181:a4cbdfbbd2f4 117 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 181:a4cbdfbbd2f4 118 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 181:a4cbdfbbd2f4 119 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 181:a4cbdfbbd2f4 120 *
mbed_official 181:a4cbdfbbd2f4 121 ******************************************************************************
mbed_official 181:a4cbdfbbd2f4 122 */
mbed_official 181:a4cbdfbbd2f4 123
mbed_official 181:a4cbdfbbd2f4 124 /* Includes ------------------------------------------------------------------*/
mbed_official 181:a4cbdfbbd2f4 125 #include "stm32l0xx_hal.h"
mbed_official 181:a4cbdfbbd2f4 126
mbed_official 181:a4cbdfbbd2f4 127 /** @addtogroup STM32L0xx_HAL_Driver
mbed_official 181:a4cbdfbbd2f4 128 * @{
mbed_official 181:a4cbdfbbd2f4 129 */
mbed_official 181:a4cbdfbbd2f4 130
mbed_official 181:a4cbdfbbd2f4 131 /** @defgroup GPIO
mbed_official 181:a4cbdfbbd2f4 132 * @brief GPIO HAL module driver
mbed_official 181:a4cbdfbbd2f4 133 * @{
mbed_official 181:a4cbdfbbd2f4 134 */
mbed_official 181:a4cbdfbbd2f4 135
mbed_official 181:a4cbdfbbd2f4 136 #ifdef HAL_GPIO_MODULE_ENABLED
mbed_official 181:a4cbdfbbd2f4 137
mbed_official 181:a4cbdfbbd2f4 138 /* Private typedef -----------------------------------------------------------*/
mbed_official 181:a4cbdfbbd2f4 139 /* Private define ------------------------------------------------------------*/
mbed_official 181:a4cbdfbbd2f4 140 /* Private macro -------------------------------------------------------------*/
mbed_official 181:a4cbdfbbd2f4 141 #define __HAL_GET_GPIO_SOURCE(__GPIOx__) \
mbed_official 181:a4cbdfbbd2f4 142 (((uint32_t)(__GPIOx__) == ((uint32_t)GPIOA_BASE))? 0 :\
mbed_official 181:a4cbdfbbd2f4 143 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x0400)))? 1 :\
mbed_official 181:a4cbdfbbd2f4 144 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x0800)))? 2 :\
mbed_official 181:a4cbdfbbd2f4 145 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x0C00)))? 3 :\
mbed_official 181:a4cbdfbbd2f4 146 ((uint32_t)(__GPIOx__) == ((uint32_t)(GPIOA_BASE + 0x1C00)))? 4 : 5)
mbed_official 181:a4cbdfbbd2f4 147
mbed_official 181:a4cbdfbbd2f4 148
mbed_official 181:a4cbdfbbd2f4 149 #define GPIO_MODE ((uint32_t)0x00000003)
mbed_official 181:a4cbdfbbd2f4 150 #define EXTI_MODE ((uint32_t)0x10000000)
mbed_official 181:a4cbdfbbd2f4 151 #define GPIO_MODE_IT ((uint32_t)0x00010000)
mbed_official 181:a4cbdfbbd2f4 152 #define GPIO_MODE_EVT ((uint32_t)0x00020000)
mbed_official 181:a4cbdfbbd2f4 153 #define RISING_EDGE ((uint32_t)0x00100000)
mbed_official 181:a4cbdfbbd2f4 154 #define FALLING_EDGE ((uint32_t)0x00200000)
mbed_official 181:a4cbdfbbd2f4 155 #define GPIO_OUTPUT_TYPE ((uint32_t)0x00000010)
mbed_official 181:a4cbdfbbd2f4 156
mbed_official 181:a4cbdfbbd2f4 157 #define GPIO_NUMBER ((uint32_t)16)
mbed_official 181:a4cbdfbbd2f4 158 /* Private variables ---------------------------------------------------------*/
mbed_official 181:a4cbdfbbd2f4 159 /* Private function prototypes -----------------------------------------------*/
mbed_official 181:a4cbdfbbd2f4 160 /* Private functions ---------------------------------------------------------*/
mbed_official 181:a4cbdfbbd2f4 161
mbed_official 181:a4cbdfbbd2f4 162 /** @defgroup GPIO_Private_Functions
mbed_official 181:a4cbdfbbd2f4 163 * @{
mbed_official 181:a4cbdfbbd2f4 164 */
mbed_official 181:a4cbdfbbd2f4 165
mbed_official 181:a4cbdfbbd2f4 166 /** @defgroup GPIO_Group1 Initialization and de-initialization functions
mbed_official 181:a4cbdfbbd2f4 167 * @brief Initialization and Configuration functions
mbed_official 181:a4cbdfbbd2f4 168 *
mbed_official 181:a4cbdfbbd2f4 169 @verbatim
mbed_official 181:a4cbdfbbd2f4 170 ===============================================================================
mbed_official 181:a4cbdfbbd2f4 171 ##### Initialization and de-initialization functions #####
mbed_official 181:a4cbdfbbd2f4 172 ===============================================================================
mbed_official 181:a4cbdfbbd2f4 173
mbed_official 181:a4cbdfbbd2f4 174 @endverbatim
mbed_official 181:a4cbdfbbd2f4 175 * @{
mbed_official 181:a4cbdfbbd2f4 176 */
mbed_official 181:a4cbdfbbd2f4 177
mbed_official 181:a4cbdfbbd2f4 178 /**
mbed_official 181:a4cbdfbbd2f4 179 * @brief Initializes the GPIOx peripheral according to the specified parameters in the GPIO_Init.
mbed_official 181:a4cbdfbbd2f4 180 * @param GPIOx: where x can be (A..D and H) to select the GPIO peripheral for STM32L0XX family devices.
mbed_official 181:a4cbdfbbd2f4 181 * @param GPIO_Init: pointer to a GPIO_InitTypeDef structure that contains
mbed_official 181:a4cbdfbbd2f4 182 * the configuration information for the specified GPIO peripheral.
mbed_official 181:a4cbdfbbd2f4 183 * @retval None
mbed_official 181:a4cbdfbbd2f4 184 */
mbed_official 181:a4cbdfbbd2f4 185 void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init)
mbed_official 181:a4cbdfbbd2f4 186 {
mbed_official 181:a4cbdfbbd2f4 187 uint32_t position;
mbed_official 181:a4cbdfbbd2f4 188 uint32_t ioposition = 0x00;
mbed_official 181:a4cbdfbbd2f4 189 uint32_t iocurrent = 0x00;
mbed_official 181:a4cbdfbbd2f4 190 uint32_t temp = 0x00;
mbed_official 181:a4cbdfbbd2f4 191
mbed_official 181:a4cbdfbbd2f4 192 /* Check the parameters */
mbed_official 181:a4cbdfbbd2f4 193 assert_param(IS_GPIO_PIN(GPIO_Init->Pin));
mbed_official 181:a4cbdfbbd2f4 194 assert_param(IS_GPIO_MODE(GPIO_Init->Mode));
mbed_official 181:a4cbdfbbd2f4 195 assert_param(IS_GPIO_PULL(GPIO_Init->Pull));
mbed_official 181:a4cbdfbbd2f4 196
mbed_official 181:a4cbdfbbd2f4 197 /* Configure the port pins */
mbed_official 181:a4cbdfbbd2f4 198 for(position = 0; position < GPIO_NUMBER; position++)
mbed_official 181:a4cbdfbbd2f4 199 {
mbed_official 181:a4cbdfbbd2f4 200 /* Get the IO position */
mbed_official 181:a4cbdfbbd2f4 201 ioposition = ((uint32_t)0x01) << position;
mbed_official 181:a4cbdfbbd2f4 202 /* Get the current IO position */
mbed_official 181:a4cbdfbbd2f4 203 iocurrent = (uint32_t)(GPIO_Init->Pin) & ioposition;
mbed_official 181:a4cbdfbbd2f4 204
mbed_official 181:a4cbdfbbd2f4 205 if(iocurrent == ioposition)
mbed_official 181:a4cbdfbbd2f4 206 {
mbed_official 181:a4cbdfbbd2f4 207 /*--------------------- GPIO Mode Configuration ------------------------*/
mbed_official 181:a4cbdfbbd2f4 208 /* In case of Alternate function mode selection */
mbed_official 181:a4cbdfbbd2f4 209 if((GPIO_Init->Mode == GPIO_MODE_AF_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
mbed_official 181:a4cbdfbbd2f4 210 {
mbed_official 181:a4cbdfbbd2f4 211 /* Check the Alternate function parameter */
mbed_official 181:a4cbdfbbd2f4 212 assert_param(IS_GPIO_AF(GPIO_Init->Alternate));
mbed_official 181:a4cbdfbbd2f4 213 /* Configure Alternate function mapped with the current IO */
mbed_official 181:a4cbdfbbd2f4 214 temp = GPIOx->AFR[position >> 3];
mbed_official 181:a4cbdfbbd2f4 215 temp &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;
mbed_official 181:a4cbdfbbd2f4 216 temp |= ((uint32_t)(GPIO_Init->Alternate) << (((uint32_t)position & (uint32_t)0x07) * 4)) ;
mbed_official 181:a4cbdfbbd2f4 217 GPIOx->AFR[position >> 3] = temp;
mbed_official 181:a4cbdfbbd2f4 218 }
mbed_official 181:a4cbdfbbd2f4 219
mbed_official 181:a4cbdfbbd2f4 220 /* In case of Output or Alternate function mode selection */
mbed_official 181:a4cbdfbbd2f4 221 if((GPIO_Init->Mode == GPIO_MODE_OUTPUT_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_PP) ||
mbed_official 181:a4cbdfbbd2f4 222 (GPIO_Init->Mode == GPIO_MODE_OUTPUT_OD) || (GPIO_Init->Mode == GPIO_MODE_AF_OD))
mbed_official 181:a4cbdfbbd2f4 223 {
mbed_official 181:a4cbdfbbd2f4 224 /* Check the Speed parameter */
mbed_official 181:a4cbdfbbd2f4 225 assert_param(IS_GPIO_SPEED(GPIO_Init->Speed));
mbed_official 181:a4cbdfbbd2f4 226 /* Configure the IO Speed */
mbed_official 181:a4cbdfbbd2f4 227 temp = GPIOx->OSPEEDR;
mbed_official 181:a4cbdfbbd2f4 228 temp &= ~(GPIO_OSPEEDER_OSPEED0 << (position * 2));
mbed_official 181:a4cbdfbbd2f4 229 temp |= (GPIO_Init->Speed << (position * 2));
mbed_official 181:a4cbdfbbd2f4 230 GPIOx->OSPEEDR = temp;
mbed_official 181:a4cbdfbbd2f4 231
mbed_official 181:a4cbdfbbd2f4 232 /* Configure the IO Output Type */
mbed_official 181:a4cbdfbbd2f4 233 temp= GPIOx->OTYPER;
mbed_official 181:a4cbdfbbd2f4 234 temp &= ~(GPIO_OTYPER_OT_0 << position) ;
mbed_official 181:a4cbdfbbd2f4 235 temp |= (((GPIO_Init->Mode & GPIO_OUTPUT_TYPE) >> 4) << position);
mbed_official 181:a4cbdfbbd2f4 236 GPIOx->OTYPER = temp;
mbed_official 181:a4cbdfbbd2f4 237 }
mbed_official 181:a4cbdfbbd2f4 238
mbed_official 181:a4cbdfbbd2f4 239 /* Configure IO Direction mode (Input, Output, Alternate or Analog) */
mbed_official 181:a4cbdfbbd2f4 240 temp = GPIOx->MODER;
mbed_official 181:a4cbdfbbd2f4 241 temp &= ~(GPIO_MODER_MODE0 << (position * 2));
mbed_official 181:a4cbdfbbd2f4 242 temp |= ((GPIO_Init->Mode & GPIO_MODE) << (position * 2));
mbed_official 181:a4cbdfbbd2f4 243 GPIOx->MODER = temp;
mbed_official 181:a4cbdfbbd2f4 244
mbed_official 181:a4cbdfbbd2f4 245 /* Activate the Pull-up or Pull down resistor for the current IO */
mbed_official 181:a4cbdfbbd2f4 246 temp = GPIOx->PUPDR;
mbed_official 181:a4cbdfbbd2f4 247 temp &= ~(GPIO_PUPDR_PUPD0 << (position * 2));
mbed_official 181:a4cbdfbbd2f4 248 temp |= ((GPIO_Init->Pull) << (position * 2));
mbed_official 181:a4cbdfbbd2f4 249 GPIOx->PUPDR = temp;
mbed_official 181:a4cbdfbbd2f4 250
mbed_official 181:a4cbdfbbd2f4 251 /*--------------------- EXTI Mode Configuration ------------------------*/
mbed_official 181:a4cbdfbbd2f4 252 /* Configure the External Interrupt or event for the current IO */
mbed_official 181:a4cbdfbbd2f4 253 if((GPIO_Init->Mode & EXTI_MODE) == EXTI_MODE)
mbed_official 181:a4cbdfbbd2f4 254 {
mbed_official 181:a4cbdfbbd2f4 255 /* Enable SYSCFG Clock */
mbed_official 181:a4cbdfbbd2f4 256 __SYSCFG_CLK_ENABLE();
mbed_official 181:a4cbdfbbd2f4 257
mbed_official 181:a4cbdfbbd2f4 258 temp = SYSCFG->EXTICR[position >> 2];
mbed_official 181:a4cbdfbbd2f4 259 temp &= ~((uint32_t)0x0F) << (4 * (position & 0x03));
mbed_official 181:a4cbdfbbd2f4 260 temp |= ((uint32_t)(__HAL_GET_GPIO_SOURCE(GPIOx)) << (4 * (position & 0x03)));
mbed_official 181:a4cbdfbbd2f4 261 SYSCFG->EXTICR[position >> 2] = temp;
mbed_official 181:a4cbdfbbd2f4 262
mbed_official 181:a4cbdfbbd2f4 263 /* Clear EXTI line configuration */
mbed_official 181:a4cbdfbbd2f4 264 temp = EXTI->IMR;
mbed_official 181:a4cbdfbbd2f4 265 temp &= ~((uint32_t)iocurrent);
mbed_official 181:a4cbdfbbd2f4 266 if((GPIO_Init->Mode & GPIO_MODE_IT) == GPIO_MODE_IT)
mbed_official 181:a4cbdfbbd2f4 267 {
mbed_official 181:a4cbdfbbd2f4 268 temp |= iocurrent;
mbed_official 181:a4cbdfbbd2f4 269 }
mbed_official 181:a4cbdfbbd2f4 270 EXTI->IMR = temp;
mbed_official 181:a4cbdfbbd2f4 271
mbed_official 181:a4cbdfbbd2f4 272 temp = EXTI->EMR;
mbed_official 181:a4cbdfbbd2f4 273 temp &= ~((uint32_t)iocurrent);
mbed_official 181:a4cbdfbbd2f4 274 if((GPIO_Init->Mode & GPIO_MODE_EVT) == GPIO_MODE_EVT)
mbed_official 181:a4cbdfbbd2f4 275 {
mbed_official 181:a4cbdfbbd2f4 276 temp |= iocurrent;
mbed_official 181:a4cbdfbbd2f4 277 }
mbed_official 181:a4cbdfbbd2f4 278 EXTI->EMR = temp;
mbed_official 181:a4cbdfbbd2f4 279
mbed_official 181:a4cbdfbbd2f4 280 /* Clear Rising Falling edge configuration */
mbed_official 181:a4cbdfbbd2f4 281 temp = EXTI->RTSR;
mbed_official 181:a4cbdfbbd2f4 282 temp &= ~((uint32_t)iocurrent);
mbed_official 181:a4cbdfbbd2f4 283 if((GPIO_Init->Mode & RISING_EDGE) == RISING_EDGE)
mbed_official 181:a4cbdfbbd2f4 284 {
mbed_official 181:a4cbdfbbd2f4 285 temp |= iocurrent;
mbed_official 181:a4cbdfbbd2f4 286 }
mbed_official 181:a4cbdfbbd2f4 287 EXTI->RTSR = temp;
mbed_official 181:a4cbdfbbd2f4 288
mbed_official 181:a4cbdfbbd2f4 289 temp = EXTI->FTSR;
mbed_official 181:a4cbdfbbd2f4 290 temp &= ~((uint32_t)iocurrent);
mbed_official 181:a4cbdfbbd2f4 291 if((GPIO_Init->Mode & FALLING_EDGE) == FALLING_EDGE)
mbed_official 181:a4cbdfbbd2f4 292 {
mbed_official 181:a4cbdfbbd2f4 293 temp |= iocurrent;
mbed_official 181:a4cbdfbbd2f4 294 }
mbed_official 181:a4cbdfbbd2f4 295 EXTI->FTSR = temp;
mbed_official 181:a4cbdfbbd2f4 296 }
mbed_official 181:a4cbdfbbd2f4 297 }
mbed_official 181:a4cbdfbbd2f4 298 }
mbed_official 181:a4cbdfbbd2f4 299 }
mbed_official 181:a4cbdfbbd2f4 300
mbed_official 181:a4cbdfbbd2f4 301 /**
mbed_official 181:a4cbdfbbd2f4 302 * @brief De-initializes the GPIOx peripheral registers to their default reset values.
mbed_official 181:a4cbdfbbd2f4 303 * @param GPIOx: where x can be (A..D and H) to select the GPIO peripheral for STM32L0XX family devices.
mbed_official 181:a4cbdfbbd2f4 304 * @param GPIO_Pin: specifies the port bit to be written.
mbed_official 181:a4cbdfbbd2f4 305 * This parameter can be one of GPIO_PIN_x where x can be (0..15) except for GPIOD(2) and GPIOH(1:0).
mbed_official 181:a4cbdfbbd2f4 306 * @retval None
mbed_official 181:a4cbdfbbd2f4 307 */
mbed_official 181:a4cbdfbbd2f4 308 void HAL_GPIO_DeInit(GPIO_TypeDef *GPIOx, uint32_t GPIO_Pin)
mbed_official 181:a4cbdfbbd2f4 309 {
mbed_official 181:a4cbdfbbd2f4 310 uint32_t position;
mbed_official 181:a4cbdfbbd2f4 311 uint32_t ioposition = 0x00;
mbed_official 181:a4cbdfbbd2f4 312 uint32_t iocurrent = 0x00;
mbed_official 181:a4cbdfbbd2f4 313 uint32_t tmp = 0x00;
mbed_official 181:a4cbdfbbd2f4 314
mbed_official 181:a4cbdfbbd2f4 315 /* Configure the port pins */
mbed_official 181:a4cbdfbbd2f4 316 for(position = 0; position < GPIO_NUMBER; position++)
mbed_official 181:a4cbdfbbd2f4 317 {
mbed_official 181:a4cbdfbbd2f4 318 /* Get the IO position */
mbed_official 181:a4cbdfbbd2f4 319 ioposition = ((uint32_t)0x01) << position;
mbed_official 181:a4cbdfbbd2f4 320 /* Get the current IO position */
mbed_official 181:a4cbdfbbd2f4 321 iocurrent = (GPIO_Pin) & ioposition;
mbed_official 181:a4cbdfbbd2f4 322
mbed_official 181:a4cbdfbbd2f4 323 if(iocurrent == ioposition)
mbed_official 181:a4cbdfbbd2f4 324 {
mbed_official 181:a4cbdfbbd2f4 325 /*------------------------- GPIO Mode Configuration --------------------*/
mbed_official 181:a4cbdfbbd2f4 326 /* Configure IO Direction in Input Floting Mode */
mbed_official 181:a4cbdfbbd2f4 327 GPIOx->MODER &= ~(GPIO_MODER_MODE0 << (position * 2));
mbed_official 181:a4cbdfbbd2f4 328
mbed_official 181:a4cbdfbbd2f4 329 /* Configure the default Alternate Function in current IO */
mbed_official 181:a4cbdfbbd2f4 330 GPIOx->AFR[position >> 3] &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ;
mbed_official 181:a4cbdfbbd2f4 331
mbed_official 181:a4cbdfbbd2f4 332 /* Configure the default value for IO Speed */
mbed_official 181:a4cbdfbbd2f4 333 GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEED0 << (position * 2));
mbed_official 181:a4cbdfbbd2f4 334
mbed_official 181:a4cbdfbbd2f4 335 /* Configure the default value IO Output Type */
mbed_official 181:a4cbdfbbd2f4 336 GPIOx->OTYPER &= ~(GPIO_OTYPER_OT_0 << position) ;
mbed_official 181:a4cbdfbbd2f4 337
mbed_official 181:a4cbdfbbd2f4 338 /* Deactivate the Pull-up oand Pull-down resistor for the current IO */
mbed_official 181:a4cbdfbbd2f4 339 GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPD0 << (position * 2));
mbed_official 181:a4cbdfbbd2f4 340
mbed_official 181:a4cbdfbbd2f4 341
mbed_official 181:a4cbdfbbd2f4 342 /*------------------------- EXTI Mode Configuration --------------------*/
mbed_official 181:a4cbdfbbd2f4 343 /* Configure the External Interrupt or event for the current IO */
mbed_official 181:a4cbdfbbd2f4 344 tmp = ((uint32_t)0x0F) << (4 * (position & 0x03));
mbed_official 181:a4cbdfbbd2f4 345 SYSCFG->EXTICR[position >> 2] &= ~tmp;
mbed_official 181:a4cbdfbbd2f4 346
mbed_official 181:a4cbdfbbd2f4 347 /* Clear EXTI line configuration */
mbed_official 181:a4cbdfbbd2f4 348 EXTI->IMR &= ~((uint32_t)iocurrent);
mbed_official 181:a4cbdfbbd2f4 349 EXTI->EMR &= ~((uint32_t)iocurrent);
mbed_official 181:a4cbdfbbd2f4 350
mbed_official 181:a4cbdfbbd2f4 351 /* Clear Rising Falling edge configuration */
mbed_official 181:a4cbdfbbd2f4 352 EXTI->RTSR &= ~((uint32_t)iocurrent);
mbed_official 181:a4cbdfbbd2f4 353 EXTI->FTSR &= ~((uint32_t)iocurrent);
mbed_official 181:a4cbdfbbd2f4 354 }
mbed_official 181:a4cbdfbbd2f4 355 }
mbed_official 181:a4cbdfbbd2f4 356 }
mbed_official 181:a4cbdfbbd2f4 357
mbed_official 181:a4cbdfbbd2f4 358 /**
mbed_official 181:a4cbdfbbd2f4 359 * @}
mbed_official 181:a4cbdfbbd2f4 360 */
mbed_official 181:a4cbdfbbd2f4 361
mbed_official 181:a4cbdfbbd2f4 362 /** @defgroup GPIO_Group2 IO operation functions
mbed_official 181:a4cbdfbbd2f4 363 * @brief GPIO Read and Write
mbed_official 181:a4cbdfbbd2f4 364 *
mbed_official 181:a4cbdfbbd2f4 365 @verbatim
mbed_official 181:a4cbdfbbd2f4 366 ===============================================================================
mbed_official 181:a4cbdfbbd2f4 367 ##### IO operation functions #####
mbed_official 181:a4cbdfbbd2f4 368 ===============================================================================
mbed_official 181:a4cbdfbbd2f4 369
mbed_official 181:a4cbdfbbd2f4 370 @endverbatim
mbed_official 181:a4cbdfbbd2f4 371 * @{
mbed_official 181:a4cbdfbbd2f4 372 */
mbed_official 181:a4cbdfbbd2f4 373
mbed_official 181:a4cbdfbbd2f4 374 /**
mbed_official 181:a4cbdfbbd2f4 375 * @brief Reads the specified input port pin.
mbed_official 181:a4cbdfbbd2f4 376 * @param GPIOx: where x can be (A..D and H) to select the GPIO peripheral for STM32L0xx family devices.
mbed_official 181:a4cbdfbbd2f4 377 * @param GPIO_Pin: specifies the port bit to read.
mbed_official 181:a4cbdfbbd2f4 378 * This parameter can be GPIO_PIN_x where x can be (0..15) except for GPIOD(2) and GPIOH(1:0).
mbed_official 181:a4cbdfbbd2f4 379 * @retval The input port pin value.
mbed_official 181:a4cbdfbbd2f4 380 */
mbed_official 181:a4cbdfbbd2f4 381 GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 181:a4cbdfbbd2f4 382 {
mbed_official 181:a4cbdfbbd2f4 383 GPIO_PinState bitstatus;
mbed_official 181:a4cbdfbbd2f4 384
mbed_official 181:a4cbdfbbd2f4 385 /* Check the parameters */
mbed_official 181:a4cbdfbbd2f4 386 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 181:a4cbdfbbd2f4 387
mbed_official 181:a4cbdfbbd2f4 388 if((GPIOx->IDR & GPIO_Pin) != (uint32_t)GPIO_PIN_RESET)
mbed_official 181:a4cbdfbbd2f4 389 {
mbed_official 181:a4cbdfbbd2f4 390 bitstatus = GPIO_PIN_SET;
mbed_official 181:a4cbdfbbd2f4 391 }
mbed_official 181:a4cbdfbbd2f4 392 else
mbed_official 181:a4cbdfbbd2f4 393 {
mbed_official 181:a4cbdfbbd2f4 394 bitstatus = GPIO_PIN_RESET;
mbed_official 181:a4cbdfbbd2f4 395 }
mbed_official 181:a4cbdfbbd2f4 396 return bitstatus;
mbed_official 181:a4cbdfbbd2f4 397 }
mbed_official 181:a4cbdfbbd2f4 398
mbed_official 181:a4cbdfbbd2f4 399 /**
mbed_official 181:a4cbdfbbd2f4 400 * @brief Sets or clears the selected data port bit.
mbed_official 181:a4cbdfbbd2f4 401 *
mbed_official 181:a4cbdfbbd2f4 402 * @note This function uses GPIOx_BSRR register to allow atomic read/modify
mbed_official 181:a4cbdfbbd2f4 403 * accesses. In this way, there is no risk of an IRQ occurring between
mbed_official 181:a4cbdfbbd2f4 404 * the read and the modify access.
mbed_official 181:a4cbdfbbd2f4 405 *
mbed_official 181:a4cbdfbbd2f4 406 * @param GPIOx: where x can be (A..D and H) to select the GPIO peripheral for STM32L0xx family devices.
mbed_official 181:a4cbdfbbd2f4 407 * @param GPIO_Pin: specifies the port bit to be written.
mbed_official 181:a4cbdfbbd2f4 408 * This parameter can be one of GPIO_PIN_x where x can be (0..15) except for GPIOD(2) and GPIOH(1:0).
mbed_official 181:a4cbdfbbd2f4 409 * @param PinState: specifies the value to be written to the selected bit.
mbed_official 181:a4cbdfbbd2f4 410 * This parameter can be one of the GPIO_PinState enum values:
mbed_official 181:a4cbdfbbd2f4 411 * @arg GPIO_PIN_RESET: to clear the port pin
mbed_official 181:a4cbdfbbd2f4 412 * @arg GPIO_PIN_SET: to set the port pin
mbed_official 181:a4cbdfbbd2f4 413 * @retval None
mbed_official 181:a4cbdfbbd2f4 414 */
mbed_official 181:a4cbdfbbd2f4 415 void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState)
mbed_official 181:a4cbdfbbd2f4 416 {
mbed_official 181:a4cbdfbbd2f4 417 /* Check the parameters */
mbed_official 181:a4cbdfbbd2f4 418 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 181:a4cbdfbbd2f4 419 assert_param(IS_GPIO_PIN_ACTION(PinState));
mbed_official 181:a4cbdfbbd2f4 420
mbed_official 181:a4cbdfbbd2f4 421 if(PinState != GPIO_PIN_RESET)
mbed_official 181:a4cbdfbbd2f4 422 {
mbed_official 181:a4cbdfbbd2f4 423 GPIOx->BSRR = GPIO_Pin;
mbed_official 181:a4cbdfbbd2f4 424 }
mbed_official 181:a4cbdfbbd2f4 425 else
mbed_official 181:a4cbdfbbd2f4 426 {
mbed_official 181:a4cbdfbbd2f4 427 GPIOx->BRR = GPIO_Pin ;
mbed_official 181:a4cbdfbbd2f4 428 }
mbed_official 181:a4cbdfbbd2f4 429 }
mbed_official 181:a4cbdfbbd2f4 430
mbed_official 181:a4cbdfbbd2f4 431 /**
mbed_official 181:a4cbdfbbd2f4 432 * @brief Toggles the specified GPIO pins.
mbed_official 181:a4cbdfbbd2f4 433 * @param GPIOx: Where x can be (A..D and H) to select the GPIO peripheral for STM32L0xx family devices.
mbed_official 181:a4cbdfbbd2f4 434 * @param GPIO_Pin: Specifies the pins to be toggled.
mbed_official 181:a4cbdfbbd2f4 435 * @retval None
mbed_official 181:a4cbdfbbd2f4 436 */
mbed_official 181:a4cbdfbbd2f4 437 void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 181:a4cbdfbbd2f4 438 {
mbed_official 181:a4cbdfbbd2f4 439 /* Check the parameters */
mbed_official 181:a4cbdfbbd2f4 440 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 181:a4cbdfbbd2f4 441
mbed_official 181:a4cbdfbbd2f4 442 GPIOx->ODR ^= GPIO_Pin;
mbed_official 181:a4cbdfbbd2f4 443 }
mbed_official 181:a4cbdfbbd2f4 444
mbed_official 181:a4cbdfbbd2f4 445 /**
mbed_official 181:a4cbdfbbd2f4 446 * @brief This function handles EXTI interrupt request.
mbed_official 181:a4cbdfbbd2f4 447 * @param GPIO_Pin: Specifies the pins connected EXTI line
mbed_official 181:a4cbdfbbd2f4 448 * @retval None
mbed_official 181:a4cbdfbbd2f4 449 */
mbed_official 181:a4cbdfbbd2f4 450 void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin)
mbed_official 181:a4cbdfbbd2f4 451 {
mbed_official 181:a4cbdfbbd2f4 452 /* EXTI line interrupt detected */
mbed_official 181:a4cbdfbbd2f4 453 if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET)
mbed_official 181:a4cbdfbbd2f4 454 {
mbed_official 181:a4cbdfbbd2f4 455 __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin);
mbed_official 181:a4cbdfbbd2f4 456 HAL_GPIO_EXTI_Callback(GPIO_Pin);
mbed_official 181:a4cbdfbbd2f4 457 }
mbed_official 181:a4cbdfbbd2f4 458 }
mbed_official 181:a4cbdfbbd2f4 459
mbed_official 181:a4cbdfbbd2f4 460 /**
mbed_official 181:a4cbdfbbd2f4 461 * @brief EXTI line detection callbacks.
mbed_official 181:a4cbdfbbd2f4 462 * @param GPIO_Pin: Specifies the pins connected EXTI line
mbed_official 181:a4cbdfbbd2f4 463 * @retval None
mbed_official 181:a4cbdfbbd2f4 464 */
mbed_official 181:a4cbdfbbd2f4 465 __weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
mbed_official 181:a4cbdfbbd2f4 466 {
mbed_official 181:a4cbdfbbd2f4 467 /* NOTE: This function Should not be modified, when the callback is needed,
mbed_official 181:a4cbdfbbd2f4 468 the HAL_GPIO_EXTI_Callback could be implemented in the user file
mbed_official 181:a4cbdfbbd2f4 469 */
mbed_official 181:a4cbdfbbd2f4 470 }
mbed_official 181:a4cbdfbbd2f4 471
mbed_official 181:a4cbdfbbd2f4 472 /**
mbed_official 181:a4cbdfbbd2f4 473 * @}
mbed_official 181:a4cbdfbbd2f4 474 */
mbed_official 181:a4cbdfbbd2f4 475
mbed_official 181:a4cbdfbbd2f4 476
mbed_official 181:a4cbdfbbd2f4 477 /**
mbed_official 181:a4cbdfbbd2f4 478 * @}
mbed_official 181:a4cbdfbbd2f4 479 */
mbed_official 181:a4cbdfbbd2f4 480
mbed_official 181:a4cbdfbbd2f4 481 #endif /* HAL_GPIO_MODULE_ENABLED */
mbed_official 181:a4cbdfbbd2f4 482 /**
mbed_official 181:a4cbdfbbd2f4 483 * @}
mbed_official 181:a4cbdfbbd2f4 484 */
mbed_official 181:a4cbdfbbd2f4 485
mbed_official 181:a4cbdfbbd2f4 486 /**
mbed_official 181:a4cbdfbbd2f4 487 * @}
mbed_official 181:a4cbdfbbd2f4 488 */
mbed_official 181:a4cbdfbbd2f4 489
mbed_official 181:a4cbdfbbd2f4 490 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/