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targets/cmsis/TARGET_STM/TARGET_STM32F3XX/stm32f30x_gpio.c@637:ed69428d4850, 2015-12-22 (annotated)

Committer:
jaerts
Date:
Tue Dec 22 13:22:16 2015 +0000
Revision:
637:ed69428d4850
Parent:
155:8435094ec241 
Add very shady LPC1768 CAN Filter implementation

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 155:8435094ec241 1 /**
mbed_official 155:8435094ec241 2 ******************************************************************************
mbed_official 155:8435094ec241 3 * @file stm32f30x_gpio.c
mbed_official 155:8435094ec241 4 * @author MCD Application Team
mbed_official 155:8435094ec241 5 * @version V1.1.0
mbed_official 155:8435094ec241 6 * @date 27-February-2014
mbed_official 155:8435094ec241 7 * @brief This file provides firmware functions to manage the following
mbed_official 155:8435094ec241 8 * functionalities of the GPIO peripheral:
mbed_official 155:8435094ec241 9 * + Initialization and Configuration functions
mbed_official 155:8435094ec241 10 * + GPIO Read and Write functions
mbed_official 155:8435094ec241 11 * + GPIO Alternate functions configuration functions
mbed_official 155:8435094ec241 12 *
mbed_official 155:8435094ec241 13 * @verbatim
mbed_official 155:8435094ec241 14
mbed_official 155:8435094ec241 15
mbed_official 155:8435094ec241 16 ===============================================================================
mbed_official 155:8435094ec241 17 ##### How to use this driver #####
mbed_official 155:8435094ec241 18 ===============================================================================
mbed_official 155:8435094ec241 19 [..]
mbed_official 155:8435094ec241 20 (#) Enable the GPIO AHB clock using RCC_AHBPeriphClockCmd()
mbed_official 155:8435094ec241 21 (#) Configure the GPIO pin(s) using GPIO_Init()
mbed_official 155:8435094ec241 22 Four possible configuration are available for each pin:
mbed_official 155:8435094ec241 23 (++) Input: Floating, Pull-up, Pull-down.
mbed_official 155:8435094ec241 24 (++) Output: Push-Pull (Pull-up, Pull-down or no Pull),
mbed_official 155:8435094ec241 25 Open Drain (Pull-up, Pull-down or no Pull).
mbed_official 155:8435094ec241 26 In output mode, the speed is configurable: Low, Medium, Fast or High.
mbed_official 155:8435094ec241 27 (++) Alternate Function: Push-Pull (Pull-up, Pull-down or no Pull),
mbed_official 155:8435094ec241 28 Open Drain (Pull-up, Pull-down or no Pull).
mbed_official 155:8435094ec241 29 (++) Analog: required mode when a pin is to be used as ADC channel,
mbed_official 155:8435094ec241 30 DAC output or comparator input.
mbed_official 155:8435094ec241 31 (#) Peripherals alternate function:
mbed_official 155:8435094ec241 32 (++) For ADC, DAC and comparators, configure the desired pin in
mbed_official 155:8435094ec241 33 analog mode using GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AN
mbed_official 155:8435094ec241 34 (++) For other peripherals (TIM, USART...):
mbed_official 155:8435094ec241 35 (+++) Connect the pin to the desired peripherals' Alternate
mbed_official 155:8435094ec241 36 Function (AF) using GPIO_PinAFConfig() function.
mbed_official 155:8435094ec241 37 (+++) Configure the desired pin in alternate function mode using
mbed_official 155:8435094ec241 38 GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF
mbed_official 155:8435094ec241 39 (+++) Select the type, pull-up/pull-down and output speed via
mbed_official 155:8435094ec241 40 GPIO_PuPd, GPIO_OType and GPIO_Speed members.
mbed_official 155:8435094ec241 41 (+++) Call GPIO_Init() function.
mbed_official 155:8435094ec241 42 (#) To get the level of a pin configured in input mode use GPIO_ReadInputDataBit()
mbed_official 155:8435094ec241 43 (#) To set/reset the level of a pin configured in output mode use
mbed_official 155:8435094ec241 44 GPIO_SetBits()/GPIO_ResetBits()
mbed_official 155:8435094ec241 45 (#) During and just after reset, the alternate functions are not active
mbed_official 155:8435094ec241 46 and the GPIO pins are configured in input floating mode (except JTAG pins).
mbed_official 155:8435094ec241 47 (#) The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as
mbed_official 155:8435094ec241 48 general-purpose (PC14 and PC15, respectively) when the LSE
mbed_official 155:8435094ec241 49 oscillator is off. The LSE has priority over the GPIO function.
mbed_official 155:8435094ec241 50 (#) The HSE oscillator pins OSC_IN/OSC_OUT can be used as general-purpose
mbed_official 155:8435094ec241 51 (PF0 and PF1 respectively) when the HSE oscillator is off. The HSE has
mbed_official 155:8435094ec241 52 the priority over the GPIO function.
mbed_official 155:8435094ec241 53
mbed_official 155:8435094ec241 54 @endverbatim
mbed_official 155:8435094ec241 55
mbed_official 155:8435094ec241 56 ******************************************************************************
mbed_official 155:8435094ec241 57 * @attention
mbed_official 155:8435094ec241 58 *
mbed_official 155:8435094ec241 59 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 155:8435094ec241 60 *
mbed_official 155:8435094ec241 61 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 155:8435094ec241 62 * are permitted provided that the following conditions are met:
mbed_official 155:8435094ec241 63 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 155:8435094ec241 64 * this list of conditions and the following disclaimer.
mbed_official 155:8435094ec241 65 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 155:8435094ec241 66 * this list of conditions and the following disclaimer in the documentation
mbed_official 155:8435094ec241 67 * and/or other materials provided with the distribution.
mbed_official 155:8435094ec241 68 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 155:8435094ec241 69 * may be used to endorse or promote products derived from this software
mbed_official 155:8435094ec241 70 * without specific prior written permission.
mbed_official 155:8435094ec241 71 *
mbed_official 155:8435094ec241 72 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 155:8435094ec241 73 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 155:8435094ec241 74 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 155:8435094ec241 75 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 155:8435094ec241 76 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 155:8435094ec241 77 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 155:8435094ec241 78 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 155:8435094ec241 79 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 155:8435094ec241 80 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 155:8435094ec241 81 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 155:8435094ec241 82 *
mbed_official 155:8435094ec241 83 ******************************************************************************
mbed_official 155:8435094ec241 84 */
mbed_official 155:8435094ec241 85
mbed_official 155:8435094ec241 86 /* Includes ------------------------------------------------------------------*/
mbed_official 155:8435094ec241 87 #include "stm32f30x_gpio.h"
mbed_official 155:8435094ec241 88 #include "stm32f30x_rcc.h"
mbed_official 155:8435094ec241 89
mbed_official 155:8435094ec241 90 /** @addtogroup STM32F30x_StdPeriph_Driver
mbed_official 155:8435094ec241 91 * @{
mbed_official 155:8435094ec241 92 */
mbed_official 155:8435094ec241 93
mbed_official 155:8435094ec241 94 /** @defgroup GPIO
mbed_official 155:8435094ec241 95 * @brief GPIO driver modules
mbed_official 155:8435094ec241 96 * @{
mbed_official 155:8435094ec241 97 */
mbed_official 155:8435094ec241 98
mbed_official 155:8435094ec241 99
mbed_official 155:8435094ec241 100 /* Private typedef -----------------------------------------------------------*/
mbed_official 155:8435094ec241 101 /* Private define ------------------------------------------------------------*/
mbed_official 155:8435094ec241 102
mbed_official 155:8435094ec241 103
mbed_official 155:8435094ec241 104 /* Private macro -------------------------------------------------------------*/
mbed_official 155:8435094ec241 105 /* Private variables ---------------------------------------------------------*/
mbed_official 155:8435094ec241 106 /* Private function prototypes -----------------------------------------------*/
mbed_official 155:8435094ec241 107 /* Private functions ---------------------------------------------------------*/
mbed_official 155:8435094ec241 108
mbed_official 155:8435094ec241 109 /** @defgroup GPIO_Private_Functions
mbed_official 155:8435094ec241 110 * @{
mbed_official 155:8435094ec241 111 */
mbed_official 155:8435094ec241 112
mbed_official 155:8435094ec241 113 /** @defgroup GPIO_Group1 Initialization and Configuration
mbed_official 155:8435094ec241 114 * @brief Initialization and Configuration
mbed_official 155:8435094ec241 115 *
mbed_official 155:8435094ec241 116 @verbatim
mbed_official 155:8435094ec241 117 ===============================================================================
mbed_official 155:8435094ec241 118 ##### Initialization and Configuration #####
mbed_official 155:8435094ec241 119 ===============================================================================
mbed_official 155:8435094ec241 120
mbed_official 155:8435094ec241 121 @endverbatim
mbed_official 155:8435094ec241 122 * @{
mbed_official 155:8435094ec241 123 */
mbed_official 155:8435094ec241 124
mbed_official 155:8435094ec241 125 /**
mbed_official 155:8435094ec241 126 * @brief Deinitializes the GPIOx peripheral registers to their default reset
mbed_official 155:8435094ec241 127 * values.
mbed_official 155:8435094ec241 128 * @param GPIOx: where x can be (A, B, C, D, E or F) to select the GPIO peripheral.
mbed_official 155:8435094ec241 129 * @retval None
mbed_official 155:8435094ec241 130 */
mbed_official 155:8435094ec241 131 void GPIO_DeInit(GPIO_TypeDef* GPIOx)
mbed_official 155:8435094ec241 132 {
mbed_official 155:8435094ec241 133 /* Check the parameters */
mbed_official 155:8435094ec241 134 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 155:8435094ec241 135
mbed_official 155:8435094ec241 136 if(GPIOx == GPIOA)
mbed_official 155:8435094ec241 137 {
mbed_official 155:8435094ec241 138 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOA, ENABLE);
mbed_official 155:8435094ec241 139 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOA, DISABLE);
mbed_official 155:8435094ec241 140 }
mbed_official 155:8435094ec241 141 else if(GPIOx == GPIOB)
mbed_official 155:8435094ec241 142 {
mbed_official 155:8435094ec241 143 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOB, ENABLE);
mbed_official 155:8435094ec241 144 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOB, DISABLE);
mbed_official 155:8435094ec241 145 }
mbed_official 155:8435094ec241 146 else if(GPIOx == GPIOC)
mbed_official 155:8435094ec241 147 {
mbed_official 155:8435094ec241 148 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOC, ENABLE);
mbed_official 155:8435094ec241 149 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOC, DISABLE);
mbed_official 155:8435094ec241 150 }
mbed_official 155:8435094ec241 151 else if(GPIOx == GPIOD)
mbed_official 155:8435094ec241 152 {
mbed_official 155:8435094ec241 153 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOD, ENABLE);
mbed_official 155:8435094ec241 154 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOD, DISABLE);
mbed_official 155:8435094ec241 155 }
mbed_official 155:8435094ec241 156 else if(GPIOx == GPIOE)
mbed_official 155:8435094ec241 157 {
mbed_official 155:8435094ec241 158 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOE, ENABLE);
mbed_official 155:8435094ec241 159 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOE, DISABLE);
mbed_official 155:8435094ec241 160 }
mbed_official 155:8435094ec241 161 else
mbed_official 155:8435094ec241 162 {
mbed_official 155:8435094ec241 163 if(GPIOx == GPIOF)
mbed_official 155:8435094ec241 164 {
mbed_official 155:8435094ec241 165 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOF, ENABLE);
mbed_official 155:8435094ec241 166 RCC_AHBPeriphResetCmd(RCC_AHBPeriph_GPIOF, DISABLE);
mbed_official 155:8435094ec241 167 }
mbed_official 155:8435094ec241 168 }
mbed_official 155:8435094ec241 169 }
mbed_official 155:8435094ec241 170
mbed_official 155:8435094ec241 171 /**
mbed_official 155:8435094ec241 172 * @brief Initializes the GPIOx peripheral according to the specified
mbed_official 155:8435094ec241 173 * parameters in the GPIO_InitStruct.
mbed_official 155:8435094ec241 174 * @param GPIOx: where x can be (A, B, C, D, E or F) to select the GPIO peripheral.
mbed_official 155:8435094ec241 175 * @param GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure that
mbed_official 155:8435094ec241 176 * contains the configuration information for the specified GPIO
mbed_official 155:8435094ec241 177 * peripheral.
mbed_official 155:8435094ec241 178 * @note GPIO_Pin: selects the pin to be configured:
mbed_official 155:8435094ec241 179 * GPIO_Pin_0->GPIO_Pin_15 for GPIOA, GPIOB, GPIOC, GPIOD and GPIOE;
mbed_official 155:8435094ec241 180 * GPIO_Pin_0->GPIO_Pin_2, GPIO_Pin_4, GPIO_Pin_6, GPIO_Pin_9
mbed_official 155:8435094ec241 181 * and GPIO_Pin_10 for GPIOF.
mbed_official 155:8435094ec241 182 * @retval None
mbed_official 155:8435094ec241 183 */
mbed_official 155:8435094ec241 184 void GPIO_Init(GPIO_TypeDef* GPIOx, GPIO_InitTypeDef* GPIO_InitStruct)
mbed_official 155:8435094ec241 185 {
mbed_official 155:8435094ec241 186 uint32_t pinpos = 0x00, pos = 0x00 , currentpin = 0x00;
mbed_official 155:8435094ec241 187 uint32_t tmpreg = 0x00;
mbed_official 155:8435094ec241 188
mbed_official 155:8435094ec241 189 /* Check the parameters */
mbed_official 155:8435094ec241 190 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 155:8435094ec241 191 assert_param(IS_GPIO_PIN(GPIO_InitStruct->GPIO_Pin));
mbed_official 155:8435094ec241 192 assert_param(IS_GPIO_MODE(GPIO_InitStruct->GPIO_Mode));
mbed_official 155:8435094ec241 193 assert_param(IS_GPIO_PUPD(GPIO_InitStruct->GPIO_PuPd));
mbed_official 155:8435094ec241 194
mbed_official 155:8435094ec241 195 /*-------------------------- Configure the port pins -----------------------*/
mbed_official 155:8435094ec241 196 /*-- GPIO Mode Configuration --*/
mbed_official 155:8435094ec241 197 for (pinpos = 0x00; pinpos < 0x10; pinpos++)
mbed_official 155:8435094ec241 198 {
mbed_official 155:8435094ec241 199 pos = ((uint32_t)0x01) << pinpos;
mbed_official 155:8435094ec241 200
mbed_official 155:8435094ec241 201 /* Get the port pins position */
mbed_official 155:8435094ec241 202 currentpin = (GPIO_InitStruct->GPIO_Pin) & pos;
mbed_official 155:8435094ec241 203
mbed_official 155:8435094ec241 204 if (currentpin == pos)
mbed_official 155:8435094ec241 205 {
mbed_official 155:8435094ec241 206 if ((GPIO_InitStruct->GPIO_Mode == GPIO_Mode_OUT) || (GPIO_InitStruct->GPIO_Mode == GPIO_Mode_AF))
mbed_official 155:8435094ec241 207 {
mbed_official 155:8435094ec241 208 /* Check Speed mode parameters */
mbed_official 155:8435094ec241 209 assert_param(IS_GPIO_SPEED(GPIO_InitStruct->GPIO_Speed));
mbed_official 155:8435094ec241 210
mbed_official 155:8435094ec241 211 /* Speed mode configuration */
mbed_official 155:8435094ec241 212 GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (pinpos * 2));
mbed_official 155:8435094ec241 213 GPIOx->OSPEEDR |= ((uint32_t)(GPIO_InitStruct->GPIO_Speed) << (pinpos * 2));
mbed_official 155:8435094ec241 214
mbed_official 155:8435094ec241 215 /* Check Output mode parameters */
mbed_official 155:8435094ec241 216 assert_param(IS_GPIO_OTYPE(GPIO_InitStruct->GPIO_OType));
mbed_official 155:8435094ec241 217
mbed_official 155:8435094ec241 218 /* Output mode configuration */
mbed_official 155:8435094ec241 219 GPIOx->OTYPER &= ~((GPIO_OTYPER_OT_0) << ((uint16_t)pinpos));
mbed_official 155:8435094ec241 220 GPIOx->OTYPER |= (uint16_t)(((uint16_t)GPIO_InitStruct->GPIO_OType) << ((uint16_t)pinpos));
mbed_official 155:8435094ec241 221 }
mbed_official 155:8435094ec241 222
mbed_official 155:8435094ec241 223 GPIOx->MODER &= ~(GPIO_MODER_MODER0 << (pinpos * 2));
mbed_official 155:8435094ec241 224
mbed_official 155:8435094ec241 225 GPIOx->MODER |= (((uint32_t)GPIO_InitStruct->GPIO_Mode) << (pinpos * 2));
mbed_official 155:8435094ec241 226
mbed_official 155:8435094ec241 227 /* Use temporary variable to update PUPDR register configuration, to avoid
mbed_official 155:8435094ec241 228 unexpected transition in the GPIO pin configuration. */
mbed_official 155:8435094ec241 229 tmpreg = GPIOx->PUPDR;
mbed_official 155:8435094ec241 230 tmpreg &= ~(GPIO_PUPDR_PUPDR0 << ((uint16_t)pinpos * 2));
mbed_official 155:8435094ec241 231 tmpreg |= (((uint32_t)GPIO_InitStruct->GPIO_PuPd) << (pinpos * 2));
mbed_official 155:8435094ec241 232 GPIOx->PUPDR = tmpreg;
mbed_official 155:8435094ec241 233 }
mbed_official 155:8435094ec241 234 }
mbed_official 155:8435094ec241 235 }
mbed_official 155:8435094ec241 236
mbed_official 155:8435094ec241 237 /**
mbed_official 155:8435094ec241 238 * @brief Fills each GPIO_InitStruct member with its default value.
mbed_official 155:8435094ec241 239 * @param GPIO_InitStruct: pointer to a GPIO_InitTypeDef structure which will
mbed_official 155:8435094ec241 240 * be initialized.
mbed_official 155:8435094ec241 241 * @retval None
mbed_official 155:8435094ec241 242 */
mbed_official 155:8435094ec241 243 void GPIO_StructInit(GPIO_InitTypeDef* GPIO_InitStruct)
mbed_official 155:8435094ec241 244 {
mbed_official 155:8435094ec241 245 /* Reset GPIO init structure parameters values */
mbed_official 155:8435094ec241 246 GPIO_InitStruct->GPIO_Pin = GPIO_Pin_All;
mbed_official 155:8435094ec241 247 GPIO_InitStruct->GPIO_Mode = GPIO_Mode_IN;
mbed_official 155:8435094ec241 248 GPIO_InitStruct->GPIO_Speed = GPIO_Speed_2MHz;
mbed_official 155:8435094ec241 249 GPIO_InitStruct->GPIO_OType = GPIO_OType_PP;
mbed_official 155:8435094ec241 250 GPIO_InitStruct->GPIO_PuPd = GPIO_PuPd_NOPULL;
mbed_official 155:8435094ec241 251 }
mbed_official 155:8435094ec241 252
mbed_official 155:8435094ec241 253 /**
mbed_official 155:8435094ec241 254 * @brief Locks GPIO Pins configuration registers.
mbed_official 155:8435094ec241 255 * The locked registers are GPIOx_MODER, GPIOx_OTYPER, GPIOx_OSPEEDR,
mbed_official 155:8435094ec241 256 * GPIOx_PUPDR, GPIOx_AFRL and GPIOx_AFRH.
mbed_official 155:8435094ec241 257 * @note The configuration of the locked GPIO pins can no longer be modified
mbed_official 155:8435094ec241 258 * until the next reset.
mbed_official 155:8435094ec241 259 * @param GPIOx: where x can be (A or B or D) to select the GPIO peripheral.
mbed_official 155:8435094ec241 260 * @param GPIO_Pin: specifies the port bit to be written.
mbed_official 155:8435094ec241 261 * This parameter can be any combination of GPIO_Pin_x where x can be (0..15).
mbed_official 155:8435094ec241 262 * @retval None
mbed_official 155:8435094ec241 263 */
mbed_official 155:8435094ec241 264 void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 155:8435094ec241 265 {
mbed_official 155:8435094ec241 266 uint32_t tmp = 0x00010000;
mbed_official 155:8435094ec241 267
mbed_official 155:8435094ec241 268 /* Check the parameters */
mbed_official 155:8435094ec241 269 assert_param(IS_GPIO_LIST_PERIPH(GPIOx));
mbed_official 155:8435094ec241 270 assert_param(IS_GPIO_PIN(GPIO_Pin));
mbed_official 155:8435094ec241 271
mbed_official 155:8435094ec241 272 tmp |= GPIO_Pin;
mbed_official 155:8435094ec241 273 /* Set LCKK bit */
mbed_official 155:8435094ec241 274 GPIOx->LCKR = tmp;
mbed_official 155:8435094ec241 275 /* Reset LCKK bit */
mbed_official 155:8435094ec241 276 GPIOx->LCKR = GPIO_Pin;
mbed_official 155:8435094ec241 277 /* Set LCKK bit */
mbed_official 155:8435094ec241 278 GPIOx->LCKR = tmp;
mbed_official 155:8435094ec241 279 /* Read LCKK bit */
mbed_official 155:8435094ec241 280 tmp = GPIOx->LCKR;
mbed_official 155:8435094ec241 281 /* Read LCKK bit */
mbed_official 155:8435094ec241 282 tmp = GPIOx->LCKR;
mbed_official 155:8435094ec241 283 }
mbed_official 155:8435094ec241 284
mbed_official 155:8435094ec241 285 /**
mbed_official 155:8435094ec241 286 * @}
mbed_official 155:8435094ec241 287 */
mbed_official 155:8435094ec241 288
mbed_official 155:8435094ec241 289 /** @defgroup GPIO_Group2 GPIO Read and Write
mbed_official 155:8435094ec241 290 * @brief GPIO Read and Write
mbed_official 155:8435094ec241 291 *
mbed_official 155:8435094ec241 292 @verbatim
mbed_official 155:8435094ec241 293 ===============================================================================
mbed_official 155:8435094ec241 294 ##### GPIO Read and Write #####
mbed_official 155:8435094ec241 295 ===============================================================================
mbed_official 155:8435094ec241 296
mbed_official 155:8435094ec241 297 @endverbatim
mbed_official 155:8435094ec241 298 * @{
mbed_official 155:8435094ec241 299 */
mbed_official 155:8435094ec241 300
mbed_official 155:8435094ec241 301 /**
mbed_official 155:8435094ec241 302 * @brief Reads the specified input port pin.
mbed_official 155:8435094ec241 303 * @param GPIOx: where x can be (A, B, C, D, E or F) to select the GPIO peripheral.
mbed_official 155:8435094ec241 304 * @param GPIO_Pin: specifies the port bit to read.
mbed_official 155:8435094ec241 305 * @note This parameter can be GPIO_Pin_x where x can be :
mbed_official 155:8435094ec241 306 * (0..15) for GPIOA, GPIOB, GPIOC, GPIOD or GPIOE;
mbed_official 155:8435094ec241 307 * (0..2, 4, 6, 9..10) for GPIOF.
mbed_official 155:8435094ec241 308 * @retval The input port pin value.
mbed_official 155:8435094ec241 309 */
mbed_official 155:8435094ec241 310 uint8_t GPIO_ReadInputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 155:8435094ec241 311 {
mbed_official 155:8435094ec241 312 uint8_t bitstatus = 0x00;
mbed_official 155:8435094ec241 313
mbed_official 155:8435094ec241 314 /* Check the parameters */
mbed_official 155:8435094ec241 315 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 155:8435094ec241 316 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 155:8435094ec241 317
mbed_official 155:8435094ec241 318 if ((GPIOx->IDR & GPIO_Pin) != (uint32_t)Bit_RESET)
mbed_official 155:8435094ec241 319 {
mbed_official 155:8435094ec241 320 bitstatus = (uint8_t)Bit_SET;
mbed_official 155:8435094ec241 321 }
mbed_official 155:8435094ec241 322 else
mbed_official 155:8435094ec241 323 {
mbed_official 155:8435094ec241 324 bitstatus = (uint8_t)Bit_RESET;
mbed_official 155:8435094ec241 325 }
mbed_official 155:8435094ec241 326 return bitstatus;
mbed_official 155:8435094ec241 327 }
mbed_official 155:8435094ec241 328
mbed_official 155:8435094ec241 329 /**
mbed_official 155:8435094ec241 330 * @brief Reads the specified input port pin.
mbed_official 155:8435094ec241 331 * @param GPIOx: where x can be (A, B, C, D, E or F) to select the GPIO peripheral.
mbed_official 155:8435094ec241 332 * @retval The input port pin value.
mbed_official 155:8435094ec241 333 */
mbed_official 155:8435094ec241 334 uint16_t GPIO_ReadInputData(GPIO_TypeDef* GPIOx)
mbed_official 155:8435094ec241 335 {
mbed_official 155:8435094ec241 336 /* Check the parameters */
mbed_official 155:8435094ec241 337 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 155:8435094ec241 338
mbed_official 155:8435094ec241 339 return ((uint16_t)GPIOx->IDR);
mbed_official 155:8435094ec241 340 }
mbed_official 155:8435094ec241 341
mbed_official 155:8435094ec241 342 /**
mbed_official 155:8435094ec241 343 * @brief Reads the specified output data port bit.
mbed_official 155:8435094ec241 344 * @param GPIOx: where x can be (A, B, C, D, E or F) to select the GPIO peripheral.
mbed_official 155:8435094ec241 345 * @param GPIO_Pin: Specifies the port bit to read.
mbed_official 155:8435094ec241 346 * @note This parameter can be GPIO_Pin_x where x can be :
mbed_official 155:8435094ec241 347 * (0..15) for GPIOA, GPIOB, GPIOC, GPIOD or GPIOE;
mbed_official 155:8435094ec241 348 * (0..2, 4, 6, 9..10) for GPIOF.
mbed_official 155:8435094ec241 349 * @retval The output port pin value.
mbed_official 155:8435094ec241 350 */
mbed_official 155:8435094ec241 351 uint8_t GPIO_ReadOutputDataBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 155:8435094ec241 352 {
mbed_official 155:8435094ec241 353 uint8_t bitstatus = 0x00;
mbed_official 155:8435094ec241 354
mbed_official 155:8435094ec241 355 /* Check the parameters */
mbed_official 155:8435094ec241 356 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 155:8435094ec241 357 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 155:8435094ec241 358
mbed_official 155:8435094ec241 359 if ((GPIOx->ODR & GPIO_Pin) != (uint32_t)Bit_RESET)
mbed_official 155:8435094ec241 360 {
mbed_official 155:8435094ec241 361 bitstatus = (uint8_t)Bit_SET;
mbed_official 155:8435094ec241 362 }
mbed_official 155:8435094ec241 363 else
mbed_official 155:8435094ec241 364 {
mbed_official 155:8435094ec241 365 bitstatus = (uint8_t)Bit_RESET;
mbed_official 155:8435094ec241 366 }
mbed_official 155:8435094ec241 367 return bitstatus;
mbed_official 155:8435094ec241 368 }
mbed_official 155:8435094ec241 369
mbed_official 155:8435094ec241 370 /**
mbed_official 155:8435094ec241 371 * @brief Reads the specified GPIO output data port.
mbed_official 155:8435094ec241 372 * @param GPIOx: where x can be (A, B, C, D, E or F) to select the GPIO peripheral.
mbed_official 155:8435094ec241 373 * @retval GPIO output data port value.
mbed_official 155:8435094ec241 374 */
mbed_official 155:8435094ec241 375 uint16_t GPIO_ReadOutputData(GPIO_TypeDef* GPIOx)
mbed_official 155:8435094ec241 376 {
mbed_official 155:8435094ec241 377 /* Check the parameters */
mbed_official 155:8435094ec241 378 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 155:8435094ec241 379
mbed_official 155:8435094ec241 380 return ((uint16_t)GPIOx->ODR);
mbed_official 155:8435094ec241 381 }
mbed_official 155:8435094ec241 382
mbed_official 155:8435094ec241 383 /**
mbed_official 155:8435094ec241 384 * @brief Sets the selected data port bits.
mbed_official 155:8435094ec241 385 * @param GPIOx: where x can be (A, B, C, D, E or F) to select the GPIO peripheral.
mbed_official 155:8435094ec241 386 * @param GPIO_Pin: specifies the port bits to be written.
mbed_official 155:8435094ec241 387 * @note This parameter can be GPIO_Pin_x where x can be :
mbed_official 155:8435094ec241 388 * (0..15) for GPIOA, GPIOB, GPIOC, GPIOD or GPIOE;
mbed_official 155:8435094ec241 389 * (0..2, 4, 6, 9..10) for GPIOF.
mbed_official 155:8435094ec241 390 * @retval None
mbed_official 155:8435094ec241 391 */
mbed_official 155:8435094ec241 392 void GPIO_SetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 155:8435094ec241 393 {
mbed_official 155:8435094ec241 394 /* Check the parameters */
mbed_official 155:8435094ec241 395 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 155:8435094ec241 396 assert_param(IS_GPIO_PIN(GPIO_Pin));
mbed_official 155:8435094ec241 397
mbed_official 155:8435094ec241 398 GPIOx->BSRR = GPIO_Pin;
mbed_official 155:8435094ec241 399 }
mbed_official 155:8435094ec241 400
mbed_official 155:8435094ec241 401 /**
mbed_official 155:8435094ec241 402 * @brief Clears the selected data port bits.
mbed_official 155:8435094ec241 403 * @param GPIOx: where x can be (A, B, C, D, E or F) to select the GPIO peripheral.
mbed_official 155:8435094ec241 404 * @param GPIO_Pin: specifies the port bits to be written.
mbed_official 155:8435094ec241 405 * @note This parameter can be GPIO_Pin_x where x can be :
mbed_official 155:8435094ec241 406 * (0..15) for GPIOA, GPIOB, GPIOC, GPIOD or GPIOE;
mbed_official 155:8435094ec241 407 * (0..2, 4, 6, 9..10) for GPIOF.
mbed_official 155:8435094ec241 408 * @retval None
mbed_official 155:8435094ec241 409 */
mbed_official 155:8435094ec241 410 void GPIO_ResetBits(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin)
mbed_official 155:8435094ec241 411 {
mbed_official 155:8435094ec241 412 /* Check the parameters */
mbed_official 155:8435094ec241 413 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 155:8435094ec241 414 assert_param(IS_GPIO_PIN(GPIO_Pin));
mbed_official 155:8435094ec241 415
mbed_official 155:8435094ec241 416 GPIOx->BRR = GPIO_Pin;
mbed_official 155:8435094ec241 417 }
mbed_official 155:8435094ec241 418
mbed_official 155:8435094ec241 419 /**
mbed_official 155:8435094ec241 420 * @brief Sets or clears the selected data port bit.
mbed_official 155:8435094ec241 421 * @param GPIOx: where x can be (A, B, C, D, E or F) to select the GPIO peripheral.
mbed_official 155:8435094ec241 422 * @param GPIO_Pin: specifies the port bit to be written.
mbed_official 155:8435094ec241 423 * @note This parameter can be GPIO_Pin_x where x can be :
mbed_official 155:8435094ec241 424 * (0..15) for GPIOA, GPIOB, GPIOC, GPIOD or GPIOE;
mbed_official 155:8435094ec241 425 * (0..2, 4, 6, 9..10) for GPIOF.
mbed_official 155:8435094ec241 426 * @param BitVal: specifies the value to be written to the selected bit.
mbed_official 155:8435094ec241 427 * This parameter can be one of the BitAction enumeration values:
mbed_official 155:8435094ec241 428 * @arg Bit_RESET: to clear the port pin
mbed_official 155:8435094ec241 429 * @arg Bit_SET: to set the port pin
mbed_official 155:8435094ec241 430 * @retval None
mbed_official 155:8435094ec241 431 */
mbed_official 155:8435094ec241 432 void GPIO_WriteBit(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, BitAction BitVal)
mbed_official 155:8435094ec241 433 {
mbed_official 155:8435094ec241 434 /* Check the parameters */
mbed_official 155:8435094ec241 435 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 155:8435094ec241 436 assert_param(IS_GET_GPIO_PIN(GPIO_Pin));
mbed_official 155:8435094ec241 437 assert_param(IS_GPIO_BIT_ACTION(BitVal));
mbed_official 155:8435094ec241 438
mbed_official 155:8435094ec241 439 if (BitVal != Bit_RESET)
mbed_official 155:8435094ec241 440 {
mbed_official 155:8435094ec241 441 GPIOx->BSRR = GPIO_Pin;
mbed_official 155:8435094ec241 442 }
mbed_official 155:8435094ec241 443 else
mbed_official 155:8435094ec241 444 {
mbed_official 155:8435094ec241 445 GPIOx->BRR = GPIO_Pin ;
mbed_official 155:8435094ec241 446 }
mbed_official 155:8435094ec241 447 }
mbed_official 155:8435094ec241 448
mbed_official 155:8435094ec241 449 /**
mbed_official 155:8435094ec241 450 * @brief Writes data to the specified GPIO data port.
mbed_official 155:8435094ec241 451 * @param GPIOx: where x can be (A, B, C, D, E or F) to select the GPIO peripheral.
mbed_official 155:8435094ec241 452 * @param PortVal: specifies the value to be written to the port output data
mbed_official 155:8435094ec241 453 * register.
mbed_official 155:8435094ec241 454 * @retval None
mbed_official 155:8435094ec241 455 */
mbed_official 155:8435094ec241 456 void GPIO_Write(GPIO_TypeDef* GPIOx, uint16_t PortVal)
mbed_official 155:8435094ec241 457 {
mbed_official 155:8435094ec241 458 /* Check the parameters */
mbed_official 155:8435094ec241 459 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 155:8435094ec241 460
mbed_official 155:8435094ec241 461 GPIOx->ODR = PortVal;
mbed_official 155:8435094ec241 462 }
mbed_official 155:8435094ec241 463
mbed_official 155:8435094ec241 464 /**
mbed_official 155:8435094ec241 465 * @}
mbed_official 155:8435094ec241 466 */
mbed_official 155:8435094ec241 467
mbed_official 155:8435094ec241 468 /** @defgroup GPIO_Group3 GPIO Alternate functions configuration functions
mbed_official 155:8435094ec241 469 * @brief GPIO Alternate functions configuration functions
mbed_official 155:8435094ec241 470 *
mbed_official 155:8435094ec241 471 @verbatim
mbed_official 155:8435094ec241 472 ===============================================================================
mbed_official 155:8435094ec241 473 ##### GPIO Alternate functions configuration functions #####
mbed_official 155:8435094ec241 474 ===============================================================================
mbed_official 155:8435094ec241 475
mbed_official 155:8435094ec241 476 @endverbatim
mbed_official 155:8435094ec241 477 * @{
mbed_official 155:8435094ec241 478 */
mbed_official 155:8435094ec241 479
mbed_official 155:8435094ec241 480 /**
mbed_official 155:8435094ec241 481 * @brief Writes data to the specified GPIO data port.
mbed_official 155:8435094ec241 482 * @param GPIOx: where x can be (A, B, C, D, E or F) to select the GPIO peripheral.
mbed_official 155:8435094ec241 483 * @param GPIO_PinSource: specifies the pin for the Alternate function.
mbed_official 155:8435094ec241 484 * This parameter can be GPIO_PinSourcex where x can be (0..15).
mbed_official 155:8435094ec241 485 * @param GPIO_AF: selects the pin to be used as Alternate function.
mbed_official 155:8435094ec241 486 * This parameter can be one of the following value:
mbed_official 155:8435094ec241 487 * @arg GPIO_AF_0: JTCK-SWCLK, JTDI, JTDO/TRACESW0, JTMS-SWDAT, MCO, NJTRST,
mbed_official 155:8435094ec241 488 * TRACED, TRACECK.
mbed_official 155:8435094ec241 489 * @arg GPIO_AF_1: OUT, TIM2, TIM15, TIM16, TIM17.
mbed_official 155:8435094ec241 490 * @arg GPIO_AF_2: COMP1_OUT, TIM1, TIM2, TIM3, TIM4, TIM8, TIM15, TIM16.
mbed_official 155:8435094ec241 491 * @arg GPIO_AF_3: COMP7_OUT, TIM8, TIM15, Touch, HRTIM.
mbed_official 155:8435094ec241 492 * @arg GPIO_AF_4: I2C1, I2C2, TIM1, TIM8, TIM16, TIM17.
mbed_official 155:8435094ec241 493 * @arg GPIO_AF_5: IR_OUT, I2S2, I2S3, SPI1, SPI2, TIM8, USART4, USART5
mbed_official 155:8435094ec241 494 * @arg GPIO_AF_6: IR_OUT, I2S2, I2S3, SPI2, SPI3, TIM1, TIM8
mbed_official 155:8435094ec241 495 * @arg GPIO_AF_7: AOP2_OUT, CAN, COMP3_OUT, COMP5_OUT, COMP6_OUT, USART1,
mbed_official 155:8435094ec241 496 * USART2, USART3.
mbed_official 155:8435094ec241 497 * @arg GPIO_AF_8: COMP1_OUT, COMP2_OUT, COMP3_OUT, COMP4_OUT, COMP5_OUT,
mbed_official 155:8435094ec241 498 * COMP6_OUT.
mbed_official 155:8435094ec241 499 * @arg GPIO_AF_9: AOP4_OUT, CAN, TIM1, TIM8, TIM15.
mbed_official 155:8435094ec241 500 * @arg GPIO_AF_10: AOP1_OUT, AOP3_OUT, TIM2, TIM3, TIM4, TIM8, TIM17.
mbed_official 155:8435094ec241 501 * @arg GPIO_AF_11: TIM1, TIM8.
mbed_official 155:8435094ec241 502 * @arg GPIO_AF_12: TIM1, HRTIM.
mbed_official 155:8435094ec241 503 * @arg GPIO_AF_13: HRTIM, AOP2_OUT.
mbed_official 155:8435094ec241 504 * @arg GPIO_AF_14: USBDM, USBDP.
mbed_official 155:8435094ec241 505 * @arg GPIO_AF_15: OUT.
mbed_official 155:8435094ec241 506 * @note The pin should already been configured in Alternate Function mode(AF)
mbed_official 155:8435094ec241 507 * using GPIO_InitStruct->GPIO_Mode = GPIO_Mode_AF
mbed_official 155:8435094ec241 508 * @note Refer to the Alternate function mapping table in the device datasheet
mbed_official 155:8435094ec241 509 * for the detailed mapping of the system and peripherals alternate
mbed_official 155:8435094ec241 510 * function I/O pins.
mbed_official 155:8435094ec241 511 * @retval None
mbed_official 155:8435094ec241 512 */
mbed_official 155:8435094ec241 513 void GPIO_PinAFConfig(GPIO_TypeDef* GPIOx, uint16_t GPIO_PinSource, uint8_t GPIO_AF)
mbed_official 155:8435094ec241 514 {
mbed_official 155:8435094ec241 515 uint32_t temp = 0x00;
mbed_official 155:8435094ec241 516 uint32_t temp_2 = 0x00;
mbed_official 155:8435094ec241 517
mbed_official 155:8435094ec241 518 /* Check the parameters */
mbed_official 155:8435094ec241 519 assert_param(IS_GPIO_ALL_PERIPH(GPIOx));
mbed_official 155:8435094ec241 520 assert_param(IS_GPIO_PIN_SOURCE(GPIO_PinSource));
mbed_official 155:8435094ec241 521 assert_param(IS_GPIO_AF(GPIO_AF));
mbed_official 155:8435094ec241 522
mbed_official 155:8435094ec241 523 temp = ((uint32_t)(GPIO_AF) << ((uint32_t)((uint32_t)GPIO_PinSource & (uint32_t)0x07) * 4));
mbed_official 155:8435094ec241 524 GPIOx->AFR[GPIO_PinSource >> 0x03] &= ~((uint32_t)0xF << ((uint32_t)((uint32_t)GPIO_PinSource & (uint32_t)0x07) * 4));
mbed_official 155:8435094ec241 525 temp_2 = GPIOx->AFR[GPIO_PinSource >> 0x03] | temp;
mbed_official 155:8435094ec241 526 GPIOx->AFR[GPIO_PinSource >> 0x03] = temp_2;
mbed_official 155:8435094ec241 527 }
mbed_official 155:8435094ec241 528
mbed_official 155:8435094ec241 529 /**
mbed_official 155:8435094ec241 530 * @}
mbed_official 155:8435094ec241 531 */
mbed_official 155:8435094ec241 532
mbed_official 155:8435094ec241 533 /**
mbed_official 155:8435094ec241 534 * @}
mbed_official 155:8435094ec241 535 */
mbed_official 155:8435094ec241 536
mbed_official 155:8435094ec241 537 /**
mbed_official 155:8435094ec241 538 * @}
mbed_official 155:8435094ec241 539 */
mbed_official 155:8435094ec241 540
mbed_official 155:8435094ec241 541 /**
mbed_official 155:8435094ec241 542 * @}
mbed_official 155:8435094ec241 543 */
mbed_official 155:8435094ec241 544
mbed_official 155:8435094ec241 545 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/