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Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_gpio.c@80:66393a7b209d, 2014-01-30 (annotated)

Committer:
mbed_official
Date:
Thu Jan 30 12:15:05 2014 +0000
Revision:
80:66393a7b209d
Parent:
76:aeb1df146756 
Synchronized with git revision dba523f83fe09b7fce11fc1299dd1216e9776359



Full URL: https://github.com/mbedmicro/mbed/commit/dba523f83fe09b7fce11fc1299dd1216e9776359/



Update of I2C, SPI, SLEEP for NUCLEO_F103RB and L152RE

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 76:aeb1df146756 1 /**
mbed_official 76:aeb1df146756 2 ******************************************************************************
mbed_official 76:aeb1df146756 3 * @file stm32l1xx_gpio.c
mbed_official 76:aeb1df146756 4 * @author MCD Application Team
mbed_official 80:66393a7b209d 5 * @version V1.3.0
mbed_official 80:66393a7b209d 6 * @date 31-January-2014
mbed_official 76:aeb1df146756 7 * @brief This file provides firmware functions to manage the following
mbed_official 76:aeb1df146756 8 * functionalities of the GPIO peripheral:
mbed_official 76:aeb1df146756 9 * + Initialization and Configuration
mbed_official 76:aeb1df146756 10 * + GPIO Read and Write
mbed_official 76:aeb1df146756 11 * + GPIO Alternate functions configuration
mbed_official 76:aeb1df146756 12 *
mbed_official 76:aeb1df146756 13 * @verbatim
mbed_official 76:aeb1df146756 14 ===========================================================================
mbed_official 76:aeb1df146756 15 ##### How to use this driver #####
mbed_official 76:aeb1df146756 16 ===========================================================================
mbed_official 76:aeb1df146756 17 [..]
mbed_official 76:aeb1df146756 18 (#) Enable the GPIO AHB clock using RCC_AHBPeriphClockCmd()
mbed_official 76:aeb1df146756 19 (#) Configure the GPIO pin(s) using GPIO_Init()
mbed_official 76:aeb1df146756 20 Four possible configuration are available for each pin:
mbed_official 76:aeb1df146756 21 (++) Input: Floating, Pull-up, Pull-down.
mbed_official 76:aeb1df146756 22 (++) Output: Push-Pull (Pull-up, Pull-down or no Pull)
mbed_official 76:aeb1df146756 23 Open Drain (Pull-up, Pull-down or no Pull).
mbed_official 76:aeb1df146756 24 In output mode, the speed is configurable: Very Low, Low,
mbed_official 76:aeb1df146756 25 Medium or High.
mbed_official 76:aeb1df146756 26 (++) Alternate Function: Push-Pull (Pull-up, Pull-down or no Pull)
mbed_official 76:aeb1df146756 27 Open Drain (Pull-up, Pull-down or no Pull).
mbed_official 76:aeb1df146756 28 (++) Analog: required mode when a pin is to be used as ADC channel,
mbed_official 76:aeb1df146756 29 DAC output or comparator input.
mbed_official 76:aeb1df146756 30 (#) Peripherals alternate function:
mbed_official 76:aeb1df146756 31 (++) For ADC, DAC and comparators, configure the desired pin in
mbed_official 76:aeb1df146756 32 analog mode using GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AN
mbed_official 76:aeb1df146756 33 (++) For other peripherals (TIM, USART...):
mbed_official 76:aeb1df146756 34 (+++) Connect the pin to the desired peripherals' Alternate
mbed_official 76:aeb1df146756 35 Function (AF) using GPIO_PinAFConfig() function.
mbed_official 76:aeb1df146756 36 (+++) Configure the desired pin in alternate function mode using
mbed_official 76:aeb1df146756 37 GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF
mbed_official 76:aeb1df146756 38 (+++) Select the type, pull-up/pull-down and output speed via
mbed_official 76:aeb1df146756 39 GPIO_PuPd, GPIO_OType and GPIO_Speed members.
mbed_official 76:aeb1df146756 40 (+++) Call GPIO_Init() function.
mbed_official 76:aeb1df146756 41 (#) To get the level of a pin configured in input mode use GPIO_ReadInputDataBit()
mbed_official 76:aeb1df146756 42 (#) To set/reset the level of a pin configured in output mode use
mbed_official 76:aeb1df146756 43 GPIO_SetBits()/GPIO_ResetBits()
mbed_official 76:aeb1df146756 44 (#) During and just after reset, the alternate functions are not
mbed_official 76:aeb1df146756 45 active and the GPIO pins are configured in input floating mode
mbed_official 76:aeb1df146756 46 (except JTAG pins).
mbed_official 76:aeb1df146756 47 (#) The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as
mbed_official 76:aeb1df146756 48 general-purpose (PC14 and PC15, respectively) when the LSE
mbed_official 76:aeb1df146756 49 oscillator is off. The LSE has priority over the GPIO function.
mbed_official 76:aeb1df146756 50 (#) The HSE oscillator pins OSC_IN/OSC_OUT can be used as
mbed_official 76:aeb1df146756 51 general-purpose PH0 and PH1, respectively, when the HSE
mbed_official 76:aeb1df146756 52 oscillator is off. The HSE has priority over the GPIO function.
mbed_official 76:aeb1df146756 53 @endverbatim
mbed_official 76:aeb1df146756 54 *
mbed_official 76:aeb1df146756 55 ******************************************************************************
mbed_official 76:aeb1df146756 56 * @attention
mbed_official 76:aeb1df146756 57 *
mbed_official 80:66393a7b209d 58 * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
mbed_official 76:aeb1df146756 59 *
mbed_official 76:aeb1df146756 60 * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
mbed_official 76:aeb1df146756 61 * You may not use this file except in compliance with the License.
mbed_official 76:aeb1df146756 62 * You may obtain a copy of the License at:
mbed_official 76:aeb1df146756 63 *
mbed_official 76:aeb1df146756 64 * http://www.st.com/software_license_agreement_liberty_v2
mbed_official 76:aeb1df146756 65 *
mbed_official 76:aeb1df146756 66 * Unless required by applicable law or agreed to in writing, software
mbed_official 76:aeb1df146756 67 * distributed under the License is distributed on an "AS IS" BASIS,
mbed_official 76:aeb1df146756 68 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
mbed_official 76:aeb1df146756 69 * See the License for the specific language governing permissions and
mbed_official 76:aeb1df146756 70 * limitations under the License.
mbed_official 76:aeb1df146756 71 *
mbed_official 76:aeb1df146756 72 ******************************************************************************
mbed_official 76:aeb1df146756 73 */
mbed_official 76:aeb1df146756 74
mbed_official 76:aeb1df146756 75 /* Includes ------------------------------------------------------------------*/
mbed_official 76:aeb1df146756 76 #include "stm32l1xx_gpio.h"
mbed_official 76:aeb1df146756 77 #include "stm32l1xx_rcc.h"
mbed_official 76:aeb1df146756 78
mbed_official 76:aeb1df146756 79 /** @addtogroup STM32L1xx_StdPeriph_Driver
mbed_official 76:aeb1df146756 80 * @{
mbed_official 76:aeb1df146756 81 */
mbed_official 76:aeb1df146756 82
mbed_official 76:aeb1df146756 83 /** @defgroup GPIO
mbed_official 76:aeb1df146756 84 * @brief GPIO driver modules
mbed_official 76:aeb1df146756 85 * @{
mbed_official 76:aeb1df146756 86 */
mbed_official 76:aeb1df146756 87
mbed_official 76:aeb1df146756 88 /* Private typedef -----------------------------------------------------------*/
mbed_official 76:aeb1df146756 89 /* Private define ------------------------------------------------------------*/
mbed_official 76:aeb1df146756 90 /* Private macro -------------------------------------------------------------*/
mbed_official 76:aeb1df146756 91 /* Private variables ---------------------------------------------------------*/
mbed_official 76:aeb1df146756 92 /* Private function prototypes -----------------------------------------------*/
mbed_official 76:aeb1df146756 93 /* Private functions ---------------------------------------------------------*/
mbed_official 76:aeb1df146756 94
mbed_official 76:aeb1df146756 95 /** @defgroup GPIO_Private_Functions
mbed_official 76:aeb1df146756 96 * @{
mbed_official 76:aeb1df146756 97 */
mbed_official 76:aeb1df146756 98
mbed_official 76:aeb1df146756 99 /** @defgroup GPIO_Group1 Initialization and Configuration
mbed_official 76:aeb1df146756 100 * @brief Initialization and Configuration
mbed_official 76:aeb1df146756 101 *
mbed_official 76:aeb1df146756 102 @verbatim
mbed_official 76:aeb1df146756 103 ===============================================================================
mbed_official 76:aeb1df146756 104 ##### Initialization and Configuration #####
mbed_official 76:aeb1df146756 105 ===============================================================================
mbed_official 76:aeb1df146756 106
mbed_official 76:aeb1df146756 107 @endverbatim
mbed_official 76:aeb1df146756 108 * @{
mbed_official 76:aeb1df146756 109 */
mbed_official 76:aeb1df146756 110
mbed_official 76:aeb1df146756 111 /**
mbed_official 76:aeb1df146756 112 * @brief Deinitializes the GPIOx peripheral registers to their default reset
mbed_official 76:aeb1df146756 113 * values.
mbed_official 76:aeb1df146756 114 * By default, The GPIO pins are configured in input floating mode
mbed_official 76:aeb1df146756 115 * (except JTAG pins).
mbed_official 76:aeb1df146756 116 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 117 * @retval None
mbed_official 76:aeb1df146756 118 */
mbed_official 76:aeb1df146756 119 void GPIO_DeInit(GPIO_TypeDef* GPIOx)
mbed_official 76:aeb1df146756 120 {
mbed_official 76:aeb1df146756 121 /* Check the parameters */
mbed_official 76:aeb1df146756 122 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 123
mbed_official 76:aeb1df146756 124 if(GPIOx == GPIOA)
mbed_official 76:aeb1df146756 125 {
mbed_official 76:aeb1df146756 126 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOA, ENABLE);
mbed_official 76:aeb1df146756 127 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOA, DISABLE);
mbed_official 76:aeb1df146756 128 }
mbed_official 76:aeb1df146756 129 else if(GPIOx == GPIOB)
mbed_official 76:aeb1df146756 130 {
mbed_official 76:aeb1df146756 131 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOB, ENABLE);
mbed_official 76:aeb1df146756 132 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOB, DISABLE);
mbed_official 76:aeb1df146756 133 }
mbed_official 76:aeb1df146756 134 else if(GPIOx == GPIOC)
mbed_official 76:aeb1df146756 135 {
mbed_official 76:aeb1df146756 136 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOC, ENABLE);
mbed_official 76:aeb1df146756 137 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOC, DISABLE);
mbed_official 76:aeb1df146756 138 }
mbed_official 76:aeb1df146756 139 else if(GPIOx == GPIOD)
mbed_official 76:aeb1df146756 140 {
mbed_official 76:aeb1df146756 141 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOD, ENABLE);
mbed_official 76:aeb1df146756 142 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOD, DISABLE);
mbed_official 76:aeb1df146756 143 }
mbed_official 76:aeb1df146756 144 else if(GPIOx == GPIOE)
mbed_official 76:aeb1df146756 145 {
mbed_official 76:aeb1df146756 146 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOE, ENABLE);
mbed_official 76:aeb1df146756 147 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOE, DISABLE);
mbed_official 76:aeb1df146756 148 }
mbed_official 76:aeb1df146756 149 else if(GPIOx == GPIOF)
mbed_official 76:aeb1df146756 150 {
mbed_official 76:aeb1df146756 151 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOF, ENABLE);
mbed_official 76:aeb1df146756 152 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOF, DISABLE);
mbed_official 76:aeb1df146756 153 }
mbed_official 76:aeb1df146756 154 else if(GPIOx == GPIOG)
mbed_official 76:aeb1df146756 155 {
mbed_official 76:aeb1df146756 156 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOG, ENABLE);
mbed_official 76:aeb1df146756 157 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOG, DISABLE);
mbed_official 76:aeb1df146756 158 }
mbed_official 76:aeb1df146756 159 else
mbed_official 76:aeb1df146756 160 {
mbed_official 76:aeb1df146756 161 if(GPIOx == GPIOH)
mbed_official 76:aeb1df146756 162 {
mbed_official 76:aeb1df146756 163 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOH, ENABLE);
mbed_official 76:aeb1df146756 164 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOH, DISABLE);
mbed_official 76:aeb1df146756 165 }
mbed_official 76:aeb1df146756 166 }
mbed_official 76:aeb1df146756 167 }
mbed_official 76:aeb1df146756 168
mbed_official 76:aeb1df146756 169 /**
mbed_official 76:aeb1df146756 170 * @brief Initializes the GPIOx peripheral according to the specified
mbed_official 76:aeb1df146756 171 * parameters in the GPIO_InitStruct.
mbed_official 76:aeb1df146756 172 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 173 * @param GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure that
mbed_official 76:aeb1df146756 174 * contains the configuration information for the specified GPIO
mbed_official 76:aeb1df146756 175 * peripheral.
mbed_official 76:aeb1df146756 176
mbed_official 76:aeb1df146756 177 * @retval None
mbed_official 76:aeb1df146756 178 */
mbed_official 76:aeb1df146756 179 void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct)
mbed_official 76:aeb1df146756 180 {
mbed_official 76:aeb1df146756 181 uint32_t pinpos = 0x00, pos = 0x00 , currentpin = 0x00;
mbed_official 80:66393a7b209d 182 uint32_t tmpreg = 0x00;
mbed_official 76:aeb1df146756 183
mbed_official 76:aeb1df146756 184 /* Check the parameters */
mbed_official 76:aeb1df146756 185 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 186 assert_param(IS_GPIO_PIN(GPIO_InitStruct->GPIO_Pin));
mbed_official 76:aeb1df146756 187 assert_param(IS_GPIO_MODE(GPIO_InitStruct->GPIO_Mode));
mbed_official 76:aeb1df146756 188 assert_param(IS_GPIO_PUPD(GPIO_InitStruct->GPIO_PuPd));
mbed_official 76:aeb1df146756 189
mbed_official 76:aeb1df146756 190 /* -------------------------Configure the port pins---------------- */
mbed_official 76:aeb1df146756 191 /*-- GPIO Mode Configuration --*/
mbed_official 76:aeb1df146756 192 for (pinpos = 0x00; pinpos < 0x10; pinpos++)
mbed_official 76:aeb1df146756 193 {
mbed_official 76:aeb1df146756 194 pos = ((uint32_t)0x01) << pinpos;
mbed_official 76:aeb1df146756 195
mbed_official 76:aeb1df146756 196 /* Get the port pins position */
mbed_official 76:aeb1df146756 197 currentpin = (GPIO_InitStruct->GPIO_Pin) & pos;
mbed_official 76:aeb1df146756 198
mbed_official 76:aeb1df146756 199 if (currentpin == pos)
mbed_official 76:aeb1df146756 200 {
mbed_official 80:66393a7b209d 201 /* Use temporary variable to update MODER register configuration, to avoid
mbed_official 80:66393a7b209d 202 unexpected transition in the GPIO pin configuration. */
mbed_official 80:66393a7b209d 203 tmpreg = GPIOx->MODER;
mbed_official 80:66393a7b209d 204 tmpreg &= ~(GPIO_MODER_MODER0 << (pinpos * 2));
mbed_official 80:66393a7b209d 205 tmpreg |= (((uint32_t)GPIO_InitStruct->GPIO_Mode) << (pinpos * 2));
mbed_official 80:66393a7b209d 206 GPIOx->MODER = tmpreg;
mbed_official 76:aeb1df146756 207
mbed_official 76:aeb1df146756 208 if ((GPIO_InitStruct->GPIO_Mode == GPIO_Mode_OUT) || (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_AF))
mbed_official 76:aeb1df146756 209 {
mbed_official 76:aeb1df146756 210 /* Check Speed mode parameters */
mbed_official 76:aeb1df146756 211 assert_param(IS_GPIO_SPEED(GPIO_InitStruct->GPIO_Speed));
mbed_official 76:aeb1df146756 212
mbed_official 80:66393a7b209d 213 /* Use temporary variable to update OSPEEDR register configuration, to avoid
mbed_official 80:66393a7b209d 214 unexpected transition in the GPIO pin configuration. */
mbed_official 80:66393a7b209d 215 tmpreg = GPIOx->OSPEEDR;
mbed_official 80:66393a7b209d 216 tmpreg &= ~(GPIO_OSPEEDER_OSPEEDR0 << (pinpos * 2));
mbed_official 80:66393a7b209d 217 tmpreg |= ((uint32_t)(GPIO_InitStruct->GPIO_Speed) << (pinpos * 2));
mbed_official 80:66393a7b209d 218 GPIOx->OSPEEDR = tmpreg;
mbed_official 76:aeb1df146756 219
mbed_official 76:aeb1df146756 220 /*Check Output mode parameters */
mbed_official 76:aeb1df146756 221 assert_param(IS_GPIO_OTYPE(GPIO_InitStruct->GPIO_OType));
mbed_official 76:aeb1df146756 222
mbed_official 80:66393a7b209d 223 /* Use temporary variable to update OTYPER register configuration, to avoid
mbed_official 80:66393a7b209d 224 unexpected transition in the GPIO pin configuration. */
mbed_official 80:66393a7b209d 225 tmpreg = GPIOx->OTYPER;
mbed_official 80:66393a7b209d 226 tmpreg &= ~((GPIO_OTYPER_OT_0) << ((uint16_t)pinpos));
mbed_official 80:66393a7b209d 227 tmpreg |= (uint16_t)(((uint16_t)GPIO_InitStruct->GPIO_OType) << ((uint16_t)pinpos));
mbed_official 80:66393a7b209d 228 GPIOx->OTYPER = tmpreg;
mbed_official 76:aeb1df146756 229 }
mbed_official 76:aeb1df146756 230
mbed_official 80:66393a7b209d 231 /* Use temporary variable to update PUPDR register configuration, to avoid
mbed_official 80:66393a7b209d 232 unexpected transition in the GPIO pin configuration. */
mbed_official 80:66393a7b209d 233 tmpreg = GPIOx->PUPDR;
mbed_official 80:66393a7b209d 234 tmpreg &= ~(GPIO_PUPDR_PUPDR0 << ((uint16_t)pinpos * 2));
mbed_official 80:66393a7b209d 235 tmpreg |= (((uint32_t)GPIO_InitStruct->GPIO_PuPd) << (pinpos * 2));
mbed_official 80:66393a7b209d 236 GPIOx->PUPDR = tmpreg;
mbed_official 76:aeb1df146756 237 }
mbed_official 76:aeb1df146756 238 }
mbed_official 76:aeb1df146756 239 }
mbed_official 76:aeb1df146756 240
mbed_official 76:aeb1df146756 241 /**
mbed_official 76:aeb1df146756 242 * @brief Fills each GPIO_InitStruct member with its default value.
mbed_official 76:aeb1df146756 243 * @param GPIO_InitStruct : pointer to a GPIO_InitTypeDef structure which will
mbed_official 76:aeb1df146756 244 * be initialized.
mbed_official 76:aeb1df146756 245 * @retval None
mbed_official 76:aeb1df146756 246 */
mbed_official 76:aeb1df146756 247 void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct)
mbed_official 76:aeb1df146756 248 {
mbed_official 76:aeb1df146756 249 /* Reset GPIO init structure parameters values */
mbed_official 76:aeb1df146756 250 GPIO_InitStruct->GPIO_Pin = GPIO_Pin_All;
mbed_official 76:aeb1df146756 251 GPIO_InitStruct->GPIO_Mode = GPIO_Mode_IN;
mbed_official 76:aeb1df146756 252 GPIO_InitStruct->GPIO_Speed = GPIO_Speed_400KHz;
mbed_official 76:aeb1df146756 253 GPIO_InitStruct->GPIO_OType = GPIO_OType_PP;
mbed_official 76:aeb1df146756 254 GPIO_InitStruct->GPIO_PuPd = GPIO_PuPd_NOPULL;
mbed_official 76:aeb1df146756 255 }
mbed_official 76:aeb1df146756 256
mbed_official 76:aeb1df146756 257 /**
mbed_official 76:aeb1df146756 258 * @brief Locks GPIO Pins configuration registers.
mbed_official 76:aeb1df146756 259 * The locked registers are GPIOx_MODER, GPIOx_OTYPER, GPIOx_OSPEEDR,
mbed_official 76:aeb1df146756 260 * GPIOx_PUPDR, GPIOx_AFRL and GPIOx_AFRH.
mbed_official 76:aeb1df146756 261 * The configuration of the locked GPIO pins can no longer be modified
mbed_official 76:aeb1df146756 262 * until the next reset.
mbed_official 76:aeb1df146756 263 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 264 * @param GPIO_Pin: specifies the port bit to be written.
mbed_official 76:aeb1df146756 265 * This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
mbed_official 76:aeb1df146756 266 * @retval None
mbed_official 76:aeb1df146756 267 */
mbed_official 76:aeb1df146756 268 void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 76:aeb1df146756 269 {
mbed_official 76:aeb1df146756 270 __IO uint32_t tmp = 0x00010000;
mbed_official 76:aeb1df146756 271
mbed_official 76:aeb1df146756 272 /* Check the parameters */
mbed_official 76:aeb1df146756 273 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 274 assert_param(IS_GPIO_PIN(GPIO_Pin));
mbed_official 76:aeb1df146756 275
mbed_official 76:aeb1df146756 276 tmp |= GPIO_Pin;
mbed_official 76:aeb1df146756 277 /* Set LCKK bit */
mbed_official 76:aeb1df146756 278 GPIOx->LCKR = tmp;
mbed_official 76:aeb1df146756 279 /* Reset LCKK bit */
mbed_official 76:aeb1df146756 280 GPIOx->LCKR = GPIO_Pin;
mbed_official 76:aeb1df146756 281 /* Set LCKK bit */
mbed_official 76:aeb1df146756 282 GPIOx->LCKR = tmp;
mbed_official 76:aeb1df146756 283 /* Read LCKK bit*/
mbed_official 76:aeb1df146756 284 tmp = GPIOx->LCKR;
mbed_official 76:aeb1df146756 285 /* Read LCKK bit*/
mbed_official 76:aeb1df146756 286 tmp = GPIOx->LCKR;
mbed_official 76:aeb1df146756 287 }
mbed_official 76:aeb1df146756 288
mbed_official 76:aeb1df146756 289 /**
mbed_official 76:aeb1df146756 290 * @}
mbed_official 76:aeb1df146756 291 */
mbed_official 76:aeb1df146756 292
mbed_official 76:aeb1df146756 293 /** @defgroup GPIO_Group2 GPIO Read and Write
mbed_official 76:aeb1df146756 294 * @brief GPIO Read and Write
mbed_official 76:aeb1df146756 295 *
mbed_official 76:aeb1df146756 296 @verbatim
mbed_official 76:aeb1df146756 297 ===============================================================================
mbed_official 76:aeb1df146756 298 ##### GPIO Read and Write #####
mbed_official 76:aeb1df146756 299 ===============================================================================
mbed_official 76:aeb1df146756 300
mbed_official 76:aeb1df146756 301 @endverbatim
mbed_official 76:aeb1df146756 302 * @{
mbed_official 76:aeb1df146756 303 */
mbed_official 76:aeb1df146756 304
mbed_official 76:aeb1df146756 305 /**
mbed_official 76:aeb1df146756 306 * @brief Reads the specified input port pin.
mbed_official 76:aeb1df146756 307 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 308 * @param GPIO_Pin: specifies the port bit to read.
mbed_official 76:aeb1df146756 309 * This parameter can be GPIO_Pin_x where x can be (0..15).
mbed_official 76:aeb1df146756 310 * @retval The input port pin value.
mbed_official 76:aeb1df146756 311 */
mbed_official 76:aeb1df146756 312 uint8_t GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 76:aeb1df146756 313 {
mbed_official 76:aeb1df146756 314 uint8_t bitstatus = 0x00;
mbed_official 76:aeb1df146756 315
mbed_official 76:aeb1df146756 316 /* Check the parameters */
mbed_official 76:aeb1df146756 317 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 318 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 76:aeb1df146756 319
mbed_official 76:aeb1df146756 320 if ((GPIOx->IDR & GPIO_Pin) != (uint32_t)Bit_RESET)
mbed_official 76:aeb1df146756 321 {
mbed_official 76:aeb1df146756 322 bitstatus = (uint8_t)Bit_SET;
mbed_official 76:aeb1df146756 323 }
mbed_official 76:aeb1df146756 324 else
mbed_official 76:aeb1df146756 325 {
mbed_official 76:aeb1df146756 326 bitstatus = (uint8_t)Bit_RESET;
mbed_official 76:aeb1df146756 327 }
mbed_official 76:aeb1df146756 328 return bitstatus;
mbed_official 76:aeb1df146756 329 }
mbed_official 76:aeb1df146756 330
mbed_official 76:aeb1df146756 331 /**
mbed_official 76:aeb1df146756 332 * @brief Reads the specified GPIO input data port.
mbed_official 76:aeb1df146756 333 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 334 * @retval GPIO input data port value.
mbed_official 76:aeb1df146756 335 */
mbed_official 76:aeb1df146756 336 uint16_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx)
mbed_official 76:aeb1df146756 337 {
mbed_official 76:aeb1df146756 338 /* Check the parameters */
mbed_official 76:aeb1df146756 339 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 340
mbed_official 76:aeb1df146756 341 return ((uint16_t)GPIOx->IDR);
mbed_official 76:aeb1df146756 342 }
mbed_official 76:aeb1df146756 343
mbed_official 76:aeb1df146756 344 /**
mbed_official 76:aeb1df146756 345 * @brief Reads the specified output data port bit.
mbed_official 76:aeb1df146756 346 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 347 * @param GPIO_Pin: Specifies the port bit to read.
mbed_official 76:aeb1df146756 348 * This parameter can be GPIO_Pin_x where x can be (0..15).
mbed_official 76:aeb1df146756 349 * @retval The output port pin value.
mbed_official 76:aeb1df146756 350 */
mbed_official 76:aeb1df146756 351 uint8_t GPIO_ReadOutputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 76:aeb1df146756 352 {
mbed_official 76:aeb1df146756 353 uint8_t bitstatus = 0x00;
mbed_official 76:aeb1df146756 354
mbed_official 76:aeb1df146756 355 /* Check the parameters */
mbed_official 76:aeb1df146756 356 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 357 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 76:aeb1df146756 358
mbed_official 76:aeb1df146756 359 if ((GPIOx->ODR & GPIO_Pin) != (uint32_t)Bit_RESET)
mbed_official 76:aeb1df146756 360 {
mbed_official 76:aeb1df146756 361 bitstatus = (uint8_t)Bit_SET;
mbed_official 76:aeb1df146756 362 }
mbed_official 76:aeb1df146756 363 else
mbed_official 76:aeb1df146756 364 {
mbed_official 76:aeb1df146756 365 bitstatus = (uint8_t)Bit_RESET;
mbed_official 76:aeb1df146756 366 }
mbed_official 76:aeb1df146756 367 return bitstatus;
mbed_official 76:aeb1df146756 368 }
mbed_official 76:aeb1df146756 369
mbed_official 76:aeb1df146756 370 /**
mbed_official 76:aeb1df146756 371 * @brief Reads the specified GPIO output data port.
mbed_official 76:aeb1df146756 372 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 373 * @retval GPIO output data port value.
mbed_official 76:aeb1df146756 374 */
mbed_official 76:aeb1df146756 375 uint16_t GPIO_ReadOutputData(GPIO_TypeDef* GPIOx)
mbed_official 76:aeb1df146756 376 {
mbed_official 76:aeb1df146756 377 /* Check the parameters */
mbed_official 76:aeb1df146756 378 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 379
mbed_official 76:aeb1df146756 380 return ((uint16_t)GPIOx->ODR);
mbed_official 76:aeb1df146756 381 }
mbed_official 76:aeb1df146756 382
mbed_official 76:aeb1df146756 383 /**
mbed_official 76:aeb1df146756 384 * @brief Sets the selected data port bits.
mbed_official 76:aeb1df146756 385 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 386 * @param GPIO_Pin: specifies the port bits to be written.
mbed_official 76:aeb1df146756 387 * This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
mbed_official 76:aeb1df146756 388 * @note This functions uses GPIOx_BSRR register to allow atomic read/modify
mbed_official 76:aeb1df146756 389 * accesses. In this way, there is no risk of an IRQ occurring between
mbed_official 76:aeb1df146756 390 * the read and the modify access.
mbed_official 76:aeb1df146756 391 * @retval None
mbed_official 76:aeb1df146756 392 */
mbed_official 76:aeb1df146756 393 void GPIO_SetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 76:aeb1df146756 394 {
mbed_official 76:aeb1df146756 395 /* Check the parameters */
mbed_official 76:aeb1df146756 396 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 397 assert_param(IS_GPIO_PIN(GPIO_Pin));
mbed_official 76:aeb1df146756 398
mbed_official 76:aeb1df146756 399 GPIOx->BSRRL = GPIO_Pin;
mbed_official 76:aeb1df146756 400 }
mbed_official 76:aeb1df146756 401
mbed_official 76:aeb1df146756 402 /**
mbed_official 76:aeb1df146756 403 * @brief Clears the selected data port bits.
mbed_official 76:aeb1df146756 404 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 405 * @param GPIO_Pin: specifies the port bits to be written.
mbed_official 76:aeb1df146756 406 * This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
mbed_official 76:aeb1df146756 407 * @note This functions uses GPIOx_BSRR register to allow atomic read/modify
mbed_official 76:aeb1df146756 408 * accesses. In this way, there is no risk of an IRQ occurring between
mbed_official 76:aeb1df146756 409 * the read and the modify access.
mbed_official 76:aeb1df146756 410 * @retval None
mbed_official 76:aeb1df146756 411 */
mbed_official 76:aeb1df146756 412 void GPIO_ResetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 76:aeb1df146756 413 {
mbed_official 76:aeb1df146756 414 /* Check the parameters */
mbed_official 76:aeb1df146756 415 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 416 assert_param(IS_GPIO_PIN(GPIO_Pin));
mbed_official 76:aeb1df146756 417
mbed_official 76:aeb1df146756 418 GPIOx->BSRRH = GPIO_Pin;
mbed_official 76:aeb1df146756 419 }
mbed_official 76:aeb1df146756 420
mbed_official 76:aeb1df146756 421 /**
mbed_official 76:aeb1df146756 422 * @brief Sets or clears the selected data port bit.
mbed_official 76:aeb1df146756 423 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 424 * @param GPIO_Pin: specifies the port bit to be written.
mbed_official 76:aeb1df146756 425 * This parameter can be one of GPIO_Pin_x where x can be (0..15).
mbed_official 76:aeb1df146756 426 * @param BitVal: specifies the value to be written to the selected bit.
mbed_official 76:aeb1df146756 427 * This parameter can be one of the BitAction enum values:
mbed_official 76:aeb1df146756 428 * @arg Bit_RESET: to clear the port pin
mbed_official 76:aeb1df146756 429 * @arg Bit_SET: to set the port pin
mbed_official 76:aeb1df146756 430 * @retval None
mbed_official 76:aeb1df146756 431 */
mbed_official 76:aeb1df146756 432 void GPIO_WriteBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, BitAction BitVal)
mbed_official 76:aeb1df146756 433 {
mbed_official 76:aeb1df146756 434 /* Check the parameters */
mbed_official 76:aeb1df146756 435 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 436 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 76:aeb1df146756 437 assert_param(IS_GPIO_BIT_ACTION(BitVal));
mbed_official 76:aeb1df146756 438
mbed_official 76:aeb1df146756 439 if (BitVal != Bit_RESET)
mbed_official 76:aeb1df146756 440 {
mbed_official 76:aeb1df146756 441 GPIOx->BSRRL = GPIO_Pin;
mbed_official 76:aeb1df146756 442 }
mbed_official 76:aeb1df146756 443 else
mbed_official 76:aeb1df146756 444 {
mbed_official 76:aeb1df146756 445 GPIOx->BSRRH = GPIO_Pin ;
mbed_official 76:aeb1df146756 446 }
mbed_official 76:aeb1df146756 447 }
mbed_official 76:aeb1df146756 448
mbed_official 76:aeb1df146756 449 /**
mbed_official 76:aeb1df146756 450 * @brief Writes data to the specified GPIO data port.
mbed_official 76:aeb1df146756 451 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 452 * @param PortVal: specifies the value to be written to the port output data
mbed_official 76:aeb1df146756 453 * register.
mbed_official 76:aeb1df146756 454 * @retval None
mbed_official 76:aeb1df146756 455 */
mbed_official 76:aeb1df146756 456 void GPIO_Write(GPIO_TypeDef* GPIOx, uint16_t PortVal)
mbed_official 76:aeb1df146756 457 {
mbed_official 76:aeb1df146756 458 /* Check the parameters */
mbed_official 76:aeb1df146756 459 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 460
mbed_official 76:aeb1df146756 461 GPIOx->ODR = PortVal;
mbed_official 76:aeb1df146756 462 }
mbed_official 76:aeb1df146756 463
mbed_official 76:aeb1df146756 464 /**
mbed_official 76:aeb1df146756 465 * @brief Toggles the specified GPIO pins..
mbed_official 76:aeb1df146756 466 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 467 * @param GPIO_Pin: Specifies the pins to be toggled.
mbed_official 76:aeb1df146756 468 * @retval None
mbed_official 76:aeb1df146756 469 */
mbed_official 76:aeb1df146756 470 void GPIO_ToggleBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 76:aeb1df146756 471 {
mbed_official 76:aeb1df146756 472 /* Check the parameters */
mbed_official 76:aeb1df146756 473 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 474
mbed_official 76:aeb1df146756 475 GPIOx->ODR ^= GPIO_Pin;
mbed_official 76:aeb1df146756 476 }
mbed_official 76:aeb1df146756 477
mbed_official 76:aeb1df146756 478 /**
mbed_official 76:aeb1df146756 479 * @}
mbed_official 76:aeb1df146756 480 */
mbed_official 76:aeb1df146756 481
mbed_official 76:aeb1df146756 482 /** @defgroup GPIO_Group3 GPIO Alternate functions configuration functions
mbed_official 76:aeb1df146756 483 * @brief GPIO Alternate functions configuration functions
mbed_official 76:aeb1df146756 484 *
mbed_official 76:aeb1df146756 485 @verbatim
mbed_official 76:aeb1df146756 486 ===============================================================================
mbed_official 76:aeb1df146756 487 ##### GPIO Alternate functions configuration functions #####
mbed_official 76:aeb1df146756 488 ===============================================================================
mbed_official 76:aeb1df146756 489
mbed_official 76:aeb1df146756 490 @endverbatim
mbed_official 76:aeb1df146756 491 * @{
mbed_official 76:aeb1df146756 492 */
mbed_official 76:aeb1df146756 493
mbed_official 76:aeb1df146756 494 /**
mbed_official 76:aeb1df146756 495 * @brief Changes the mapping of the specified pin.
mbed_official 76:aeb1df146756 496 * @param GPIOx: where x can be (A..H) to select the GPIO peripheral.
mbed_official 76:aeb1df146756 497 * @param GPIO_PinSource: specifies the pin for the Alternate function.
mbed_official 76:aeb1df146756 498 * This parameter can be GPIO_PinSourcex where x can be (0..15).
mbed_official 76:aeb1df146756 499 * @param GPIO_AFSelection: selects the pin to used as Alternat function.
mbed_official 76:aeb1df146756 500 * This parameter can be one of the following values:
mbed_official 76:aeb1df146756 501 * @arg GPIO_AF_RTC_50Hz: RTC 50/60 Hz synchronization
mbed_official 76:aeb1df146756 502 * @arg GPIO_AF_MCO: Microcontroller clock output
mbed_official 76:aeb1df146756 503 * @arg GPIO_AF_RTC_AF1: Time stamp, Tamper, Alarm A out, Alarm B out,
mbed_official 76:aeb1df146756 504 * 512 Hz clock output (with an LSE oscillator of 32.768 kHz)
mbed_official 76:aeb1df146756 505 * @arg GPIO_AF_WKUP: wakeup
mbed_official 76:aeb1df146756 506 * @arg GPIO_AF_SWJ: SWJ (SW and JTAG)
mbed_official 76:aeb1df146756 507 * @arg GPIO_AF_TRACE: Connect TRACE pins to AF0 (default after reset)
mbed_official 76:aeb1df146756 508 * @arg GPIO_AF_TIM2c: Connect TIM2 pins to AF1
mbed_official 76:aeb1df146756 509 * @arg GPIO_AF_TIM3: Connect TIM3 pins to AF2
mbed_official 76:aeb1df146756 510 * @arg GPIO_AF_TIM4: Connect TIM4 pins to AF2
mbed_official 76:aeb1df146756 511 * @arg GPIO_AF_TIM5: Connect TIM5 pins to AF2
mbed_official 76:aeb1df146756 512 * @arg GPIO_AF_TIM9: Connect TIM9 pins to AF3
mbed_official 76:aeb1df146756 513 * @arg GPIO_AF_TIM10: Connect TIM10 pins to AF3
mbed_official 76:aeb1df146756 514 * @arg GPIO_AF_TIM11: Connect TIM11 pins to AF3
mbed_official 76:aeb1df146756 515 * @arg GPIO_AF_I2C1: Connect I2C1 pins to AF4
mbed_official 76:aeb1df146756 516 * @arg GPIO_AF_I2C2: Connect I2C2 pins to AF4
mbed_official 76:aeb1df146756 517 * @arg GPIO_AF_SPI1: Connect SPI1 pins to AF5
mbed_official 76:aeb1df146756 518 * @arg GPIO_AF_SPI2: Connect SPI2/I2S2 pins to AF5
mbed_official 76:aeb1df146756 519 * @arg GPIO_AF_SPI3: Connect SPI3/I2S3 pins to AF6
mbed_official 76:aeb1df146756 520 * @arg GPIO_AF_USART1: Connect USART1 pins to AF7
mbed_official 76:aeb1df146756 521 * @arg GPIO_AF_USART2: Connect USART2 pins to AF7
mbed_official 76:aeb1df146756 522 * @arg GPIO_AF_USART3: Connect USART3 pins to AF7
mbed_official 76:aeb1df146756 523 * @arg GPIO_AF_UART4: Connect UART4 pins to AF8
mbed_official 76:aeb1df146756 524 * @arg GPIO_AF_UART5: Connect UART5 pins to AF8
mbed_official 76:aeb1df146756 525 * @arg GPIO_AF_USB: Connect USB pins to AF10
mbed_official 76:aeb1df146756 526 * @arg GPIO_AF_LCD: Connect LCD pins to AF11
mbed_official 76:aeb1df146756 527 * @arg GPIO_AF_FSMC: Connect FSMC pins to AF12
mbed_official 76:aeb1df146756 528 * @arg GPIO_AF_SDIO: Connect SDIO pins to AF12
mbed_official 76:aeb1df146756 529 * @arg GPIO_AF_RI: Connect RI pins to AF14
mbed_official 76:aeb1df146756 530 * @arg GPIO_AF_EVENTOUT: Cortex-M3 EVENTOUT signal
mbed_official 76:aeb1df146756 531 * @note The pin should already been configured in Alternate Function mode(AF)
mbed_official 76:aeb1df146756 532 * using GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF
mbed_official 76:aeb1df146756 533 * @note Please refer to the Alternate function mapping table in the device
mbed_official 76:aeb1df146756 534 * datasheet for the detailed mapping of the system and peripherals'
mbed_official 76:aeb1df146756 535 * alternate function I/O pins.
mbed_official 76:aeb1df146756 536 * @note EVENTOUT is not mapped on PH0, PH1 and PH2.
mbed_official 76:aeb1df146756 537 * @retval None
mbed_official 76:aeb1df146756 538 */
mbed_official 76:aeb1df146756 539 void GPIO_PinAFConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_PinSource, uint8_t GPIO_AF)
mbed_official 76:aeb1df146756 540 {
mbed_official 76:aeb1df146756 541 uint32_t temp = 0x00;
mbed_official 76:aeb1df146756 542 uint32_t temp_2 = 0x00;
mbed_official 76:aeb1df146756 543
mbed_official 76:aeb1df146756 544 /* Check the parameters */
mbed_official 76:aeb1df146756 545 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 76:aeb1df146756 546 assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
mbed_official 76:aeb1df146756 547 assert_param(IS_GPIO_AF(GPIO_AF));
mbed_official 76:aeb1df146756 548
mbed_official 76:aeb1df146756 549 temp = ((uint32_t)(GPIO_AF) << ((uint32_t)((uint32_t)GPIO_PinSource & (uint32_t)0x07) * 4)) ;
mbed_official 76:aeb1df146756 550 GPIOx->AFR[GPIO_PinSource >> 0x03] &= ~((uint32_t)0xF << ((uint32_t)((uint32_t)GPIO_PinSource & (uint32_t)0x07) * 4)) ;
mbed_official 76:aeb1df146756 551 temp_2 = GPIOx->AFR[GPIO_PinSource >> 0x03] | temp;
mbed_official 76:aeb1df146756 552 GPIOx->AFR[GPIO_PinSource >> 0x03] = temp_2;
mbed_official 76:aeb1df146756 553 }
mbed_official 76:aeb1df146756 554
mbed_official 76:aeb1df146756 555 /**
mbed_official 76:aeb1df146756 556 * @}
mbed_official 76:aeb1df146756 557 */
mbed_official 76:aeb1df146756 558
mbed_official 76:aeb1df146756 559 /**
mbed_official 76:aeb1df146756 560 * @}
mbed_official 76:aeb1df146756 561 */
mbed_official 76:aeb1df146756 562
mbed_official 76:aeb1df146756 563 /**
mbed_official 76:aeb1df146756 564 * @}
mbed_official 76:aeb1df146756 565 */
mbed_official 76:aeb1df146756 566
mbed_official 76:aeb1df146756 567 /**
mbed_official 76:aeb1df146756 568 * @}
mbed_official 76:aeb1df146756 569 */
mbed_official 76:aeb1df146756 570 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/