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STM32L486xx HAL User Manual
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00001 /** 00002 ****************************************************************************** 00003 * @file stm32l4xx_ll_gpio.c 00004 * @author MCD Application Team 00005 * @brief GPIO LL module driver. 00006 ****************************************************************************** 00007 * @attention 00008 * 00009 * <h2><center>© COPYRIGHT(c) 2017 STMicroelectronics</center></h2> 00010 * 00011 * Redistribution and use in source and binary forms, with or without modification, 00012 * are permitted provided that the following conditions are met: 00013 * 1. Redistributions of source code must retain the above copyright notice, 00014 * this list of conditions and the following disclaimer. 00015 * 2. Redistributions in binary form must reproduce the above copyright notice, 00016 * this list of conditions and the following disclaimer in the documentation 00017 * and/or other materials provided with the distribution. 00018 * 3. Neither the name of STMicroelectronics nor the names of its contributors 00019 * may be used to endorse or promote products derived from this software 00020 * without specific prior written permission. 00021 * 00022 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00023 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00024 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00025 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 00026 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00027 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 00028 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00029 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00030 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00031 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 * 00033 ****************************************************************************** 00034 */ 00035 #if defined(USE_FULL_LL_DRIVER) 00036 00037 /* Includes ------------------------------------------------------------------*/ 00038 #include "stm32l4xx_ll_gpio.h" 00039 #include "stm32l4xx_ll_bus.h" 00040 #ifdef USE_FULL_ASSERT 00041 #include "stm32_assert.h" 00042 #else 00043 #define assert_param(expr) ((void)0U) 00044 #endif 00045 00046 /** @addtogroup STM32L4xx_LL_Driver 00047 * @{ 00048 */ 00049 00050 #if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) || defined (GPIOH) || defined (GPIOI) 00051 00052 /** @addtogroup GPIO_LL 00053 * @{ 00054 */ 00055 00056 /* Private types -------------------------------------------------------------*/ 00057 /* Private variables ---------------------------------------------------------*/ 00058 /* Private constants ---------------------------------------------------------*/ 00059 /* Private macros ------------------------------------------------------------*/ 00060 /** @addtogroup GPIO_LL_Private_Macros 00061 * @{ 00062 */ 00063 #define IS_LL_GPIO_PIN(__VALUE__) (((0x00000000U) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL))) 00064 00065 #define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_INPUT) ||\ 00066 ((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\ 00067 ((__VALUE__) == LL_GPIO_MODE_ALTERNATE) ||\ 00068 ((__VALUE__) == LL_GPIO_MODE_ANALOG)) 00069 00070 #define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\ 00071 ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN)) 00072 00073 #define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\ 00074 ((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\ 00075 ((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH) ||\ 00076 ((__VALUE__) == LL_GPIO_SPEED_FREQ_VERY_HIGH)) 00077 00078 #define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_NO) ||\ 00079 ((__VALUE__) == LL_GPIO_PULL_UP) ||\ 00080 ((__VALUE__) == LL_GPIO_PULL_DOWN)) 00081 00082 #define IS_LL_GPIO_ALTERNATE(__VALUE__) (((__VALUE__) == LL_GPIO_AF_0 ) ||\ 00083 ((__VALUE__) == LL_GPIO_AF_1 ) ||\ 00084 ((__VALUE__) == LL_GPIO_AF_2 ) ||\ 00085 ((__VALUE__) == LL_GPIO_AF_3 ) ||\ 00086 ((__VALUE__) == LL_GPIO_AF_4 ) ||\ 00087 ((__VALUE__) == LL_GPIO_AF_5 ) ||\ 00088 ((__VALUE__) == LL_GPIO_AF_6 ) ||\ 00089 ((__VALUE__) == LL_GPIO_AF_7 ) ||\ 00090 ((__VALUE__) == LL_GPIO_AF_8 ) ||\ 00091 ((__VALUE__) == LL_GPIO_AF_9 ) ||\ 00092 ((__VALUE__) == LL_GPIO_AF_10 ) ||\ 00093 ((__VALUE__) == LL_GPIO_AF_11 ) ||\ 00094 ((__VALUE__) == LL_GPIO_AF_12 ) ||\ 00095 ((__VALUE__) == LL_GPIO_AF_13 ) ||\ 00096 ((__VALUE__) == LL_GPIO_AF_14 ) ||\ 00097 ((__VALUE__) == LL_GPIO_AF_15 )) 00098 /** 00099 * @} 00100 */ 00101 00102 /* Private function prototypes -----------------------------------------------*/ 00103 00104 /* Exported functions --------------------------------------------------------*/ 00105 /** @addtogroup GPIO_LL_Exported_Functions 00106 * @{ 00107 */ 00108 00109 /** @addtogroup GPIO_LL_EF_Init 00110 * @{ 00111 */ 00112 00113 /** 00114 * @brief De-initialize GPIO registers (Registers restored to their default values). 00115 * @param GPIOx GPIO Port 00116 * @retval An ErrorStatus enumeration value: 00117 * - SUCCESS: GPIO registers are de-initialized 00118 * - ERROR: Wrong GPIO Port 00119 */ 00120 ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx) 00121 { 00122 ErrorStatus status = SUCCESS; 00123 00124 /* Check the parameters */ 00125 assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); 00126 00127 /* Force and Release reset on clock of GPIOx Port */ 00128 if (GPIOx == GPIOA) 00129 { 00130 LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_GPIOA); 00131 LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_GPIOA); 00132 } 00133 else if (GPIOx == GPIOB) 00134 { 00135 LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_GPIOB); 00136 LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_GPIOB); 00137 } 00138 else if (GPIOx == GPIOC) 00139 { 00140 LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_GPIOC); 00141 LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_GPIOC); 00142 } 00143 #if defined(GPIOD) 00144 else if (GPIOx == GPIOD) 00145 { 00146 LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_GPIOD); 00147 LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_GPIOD); 00148 } 00149 #endif /* GPIOD */ 00150 #if defined(GPIOE) 00151 else if (GPIOx == GPIOE) 00152 { 00153 LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_GPIOE); 00154 LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_GPIOE); 00155 } 00156 #endif /* GPIOE */ 00157 #if defined(GPIOF) 00158 else if (GPIOx == GPIOF) 00159 { 00160 LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_GPIOF); 00161 LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_GPIOF); 00162 } 00163 #endif /* GPIOF */ 00164 #if defined(GPIOG) 00165 else if (GPIOx == GPIOG) 00166 { 00167 LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_GPIOG); 00168 LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_GPIOG); 00169 } 00170 #endif /* GPIOG */ 00171 #if defined(GPIOH) 00172 else if (GPIOx == GPIOH) 00173 { 00174 LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_GPIOH); 00175 LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_GPIOH); 00176 } 00177 #endif /* GPIOH */ 00178 #if defined(GPIOI) 00179 else if (GPIOx == GPIOI) 00180 { 00181 LL_AHB2_GRP1_ForceReset(LL_AHB2_GRP1_PERIPH_GPIOI); 00182 LL_AHB2_GRP1_ReleaseReset(LL_AHB2_GRP1_PERIPH_GPIOI); 00183 } 00184 #endif /* GPIOI */ 00185 else 00186 { 00187 status = ERROR; 00188 } 00189 00190 return (status); 00191 } 00192 00193 /** 00194 * @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct. 00195 * @param GPIOx GPIO Port 00196 * @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure 00197 * that contains the configuration information for the specified GPIO peripheral. 00198 * @retval An ErrorStatus enumeration value: 00199 * - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content 00200 * - ERROR: Not applicable 00201 */ 00202 ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct) 00203 { 00204 uint32_t pinpos = 0x00000000U; 00205 uint32_t currentpin = 0x00000000U; 00206 00207 /* Check the parameters */ 00208 assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); 00209 assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin)); 00210 assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode)); 00211 assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull)); 00212 00213 /* ------------------------- Configure the port pins ---------------- */ 00214 /* Initialize pinpos on first pin set */ 00215 pinpos = POSITION_VAL(GPIO_InitStruct->Pin); 00216 00217 /* Configure the port pins */ 00218 while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00000000U) 00219 { 00220 /* Get current io position */ 00221 currentpin = (GPIO_InitStruct->Pin) & (0x00000001U << pinpos); 00222 00223 if (currentpin) 00224 { 00225 /* Pin Mode configuration */ 00226 LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode); 00227 00228 if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)) 00229 { 00230 /* Check Speed mode parameters */ 00231 assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed)); 00232 00233 /* Speed mode configuration */ 00234 LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed); 00235 } 00236 00237 /* Pull-up Pull down resistor configuration*/ 00238 LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull); 00239 00240 if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE) 00241 { 00242 /* Check Alternate parameter */ 00243 assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate)); 00244 00245 /* Speed mode configuration */ 00246 if (POSITION_VAL(currentpin) < 0x00000008U) 00247 { 00248 LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate); 00249 } 00250 else 00251 { 00252 LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate); 00253 } 00254 } 00255 } 00256 pinpos++; 00257 } 00258 00259 if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)) 00260 { 00261 /* Check Output mode parameters */ 00262 assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType)); 00263 00264 /* Output mode configuration*/ 00265 LL_GPIO_SetPinOutputType(GPIOx, GPIO_InitStruct->Pin, GPIO_InitStruct->OutputType); 00266 00267 } 00268 return (SUCCESS); 00269 } 00270 00271 /** 00272 * @brief Set each @ref LL_GPIO_InitTypeDef field to default value. 00273 * @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure 00274 * whose fields will be set to default values. 00275 * @retval None 00276 */ 00277 00278 void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct) 00279 { 00280 /* Reset GPIO init structure parameters values */ 00281 GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL; 00282 GPIO_InitStruct->Mode = LL_GPIO_MODE_ANALOG; 00283 GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW; 00284 GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL; 00285 GPIO_InitStruct->Pull = LL_GPIO_PULL_NO; 00286 GPIO_InitStruct->Alternate = LL_GPIO_AF_0; 00287 } 00288 00289 /** 00290 * @} 00291 */ 00292 00293 /** 00294 * @} 00295 */ 00296 00297 /** 00298 * @} 00299 */ 00300 00301 #endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOF) || defined (GPIOG) || defined (GPIOH) || defined (GPIOI) */ 00302 00303 /** 00304 * @} 00305 */ 00306 00307 #endif /* USE_FULL_LL_DRIVER */ 00308 00309 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
1.7.6.1