| /** |
| ****************************************************************************** |
| * @file stm32l0xx_ll_gpio.c |
| * @author MCD Application Team |
| * @brief GPIO LL module driver. |
| ****************************************************************************** |
| * @attention |
| * |
| * Copyright (c) 2016 STMicroelectronics. |
| * All rights reserved. |
| * |
| * This software is licensed under terms that can be found in the LICENSE file |
| * in the root directory of this software component. |
| * If no LICENSE file comes with this software, it is provided AS-IS. |
| * |
| ****************************************************************************** |
| */ |
| #if defined(USE_FULL_LL_DRIVER) |
| |
| /* Includes ------------------------------------------------------------------*/ |
| #include "stm32l0xx_ll_gpio.h" |
| #include "stm32l0xx_ll_bus.h" |
| #ifdef USE_FULL_ASSERT |
| #include "stm32_assert.h" |
| #else |
| #define assert_param(expr) ((void)0U) |
| #endif |
| |
| /** @addtogroup STM32L0xx_LL_Driver |
| * @{ |
| */ |
| |
| #if defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOH) |
| |
| /** @addtogroup GPIO_LL |
| * @{ |
| */ |
| |
| /* Private types -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private constants ---------------------------------------------------------*/ |
| /* Private macros ------------------------------------------------------------*/ |
| /** @addtogroup GPIO_LL_Private_Macros |
| * @{ |
| */ |
| #define IS_LL_GPIO_PIN(__VALUE__) (((0x00000000UL) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL))) |
| |
| #define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_INPUT) ||\ |
| ((__VALUE__) == LL_GPIO_MODE_OUTPUT) ||\ |
| ((__VALUE__) == LL_GPIO_MODE_ALTERNATE) ||\ |
| ((__VALUE__) == LL_GPIO_MODE_ANALOG)) |
| |
| #define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) ||\ |
| ((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN)) |
| |
| #define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) ||\ |
| ((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) ||\ |
| ((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH) ||\ |
| ((__VALUE__) == LL_GPIO_SPEED_FREQ_VERY_HIGH)) |
| |
| #define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_NO) ||\ |
| ((__VALUE__) == LL_GPIO_PULL_UP) ||\ |
| ((__VALUE__) == LL_GPIO_PULL_DOWN)) |
| |
| #define IS_LL_GPIO_ALTERNATE(__VALUE__) (((__VALUE__) == LL_GPIO_AF_0 ) ||\ |
| ((__VALUE__) == LL_GPIO_AF_1 ) ||\ |
| ((__VALUE__) == LL_GPIO_AF_2 ) ||\ |
| ((__VALUE__) == LL_GPIO_AF_3 ) ||\ |
| ((__VALUE__) == LL_GPIO_AF_4 ) ||\ |
| ((__VALUE__) == LL_GPIO_AF_5 ) ||\ |
| ((__VALUE__) == LL_GPIO_AF_6 ) ||\ |
| ((__VALUE__) == LL_GPIO_AF_7 )) |
| /** |
| * @} |
| */ |
| |
| /* Private function prototypes -----------------------------------------------*/ |
| |
| /* Exported functions --------------------------------------------------------*/ |
| /** @addtogroup GPIO_LL_Exported_Functions |
| * @{ |
| */ |
| |
| /** @addtogroup GPIO_LL_EF_Init |
| * @{ |
| */ |
| |
| /** |
| * @brief De-initialize GPIO registers (Registers restored to their default values). |
| * @param GPIOx GPIO Port |
| * @retval An ErrorStatus enumeration value: |
| * - SUCCESS: GPIO registers are de-initialized |
| * - ERROR: Wrong GPIO Port |
| */ |
| ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx) |
| { |
| ErrorStatus status = SUCCESS; |
| |
| /* Check the parameters */ |
| assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
| |
| /* Force and Release reset on clock of GPIOx Port */ |
| if (GPIOx == GPIOA) |
| { |
| LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOA); |
| LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOA); |
| } |
| else if (GPIOx == GPIOB) |
| { |
| LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOB); |
| LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOB); |
| } |
| else if (GPIOx == GPIOC) |
| { |
| LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOC); |
| LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOC); |
| } |
| #if defined(GPIOD) |
| else if (GPIOx == GPIOD) |
| { |
| LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOD); |
| LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOD); |
| } |
| #endif /* GPIOD */ |
| #if defined(GPIOE) |
| else if (GPIOx == GPIOE) |
| { |
| LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOE); |
| LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOE); |
| } |
| #endif /* GPIOE */ |
| #if defined(GPIOH) |
| else if (GPIOx == GPIOH) |
| { |
| LL_IOP_GRP1_ForceReset(LL_IOP_GRP1_PERIPH_GPIOH); |
| LL_IOP_GRP1_ReleaseReset(LL_IOP_GRP1_PERIPH_GPIOH); |
| } |
| #endif /* GPIOH */ |
| else |
| { |
| status = ERROR; |
| } |
| |
| return (status); |
| } |
| |
| /** |
| * @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct. |
| * @param GPIOx GPIO Port |
| * @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure |
| * that contains the configuration information for the specified GPIO peripheral. |
| * @retval An ErrorStatus enumeration value: |
| * - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content |
| * - ERROR: Not applicable |
| */ |
| ErrorStatus LL_GPIO_Init(GPIO_TypeDef *GPIOx, LL_GPIO_InitTypeDef *GPIO_InitStruct) |
| { |
| uint32_t pinpos = 0x00000000U; |
| uint32_t currentpin = 0x00000000U; |
| |
| /* Check the parameters */ |
| assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
| assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin)); |
| assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode)); |
| assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull)); |
| |
| /* ------------------------- Configure the port pins ---------------- */ |
| /* Initialize pinpos on first pin set */ |
| /* pinpos = 0; useless as already done in default initialization */ |
| |
| /* Configure the port pins */ |
| while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00000000U) |
| { |
| /* Get current io position */ |
| currentpin = (GPIO_InitStruct->Pin) & (0x00000001U << pinpos); |
| |
| if (currentpin) |
| { |
| if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) || (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)) |
| { |
| /* Check Speed mode parameters */ |
| assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed)); |
| |
| /* Speed mode configuration */ |
| LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed); |
| |
| /* Check Output mode parameters */ |
| assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType)); |
| |
| /* Output mode configuration*/ |
| LL_GPIO_SetPinOutputType(GPIOx, GPIO_InitStruct->Pin, GPIO_InitStruct->OutputType); |
| } |
| |
| /* Pull-up Pull down resistor configuration*/ |
| LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull); |
| |
| if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE) |
| { |
| /* Check Alternate parameter */ |
| assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate)); |
| |
| /* Speed mode configuration */ |
| if (currentpin < LL_GPIO_PIN_8) |
| { |
| LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate); |
| } |
| else |
| { |
| LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate); |
| } |
| } |
| |
| /* Pin Mode configuration */ |
| LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode); |
| } |
| pinpos++; |
| } |
| |
| |
| return (SUCCESS); |
| } |
| |
| /** |
| * @brief Set each @ref LL_GPIO_InitTypeDef field to default value. |
| * @param GPIO_InitStruct: pointer to a @ref LL_GPIO_InitTypeDef structure |
| * whose fields will be set to default values. |
| * @retval None |
| */ |
| |
| void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct) |
| { |
| /* Reset GPIO init structure parameters values */ |
| GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL; |
| GPIO_InitStruct->Mode = LL_GPIO_MODE_ANALOG; |
| GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW; |
| GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL; |
| GPIO_InitStruct->Pull = LL_GPIO_PULL_NO; |
| GPIO_InitStruct->Alternate = LL_GPIO_AF_0; |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* defined (GPIOA) || defined (GPIOB) || defined (GPIOC) || defined (GPIOD) || defined (GPIOE) || defined (GPIOH) */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* USE_FULL_LL_DRIVER */ |
| |
| |
