WebSVN – FuelGauge – Blame – /trunk/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_ll_gpio.c

Rev	Author	Line No.	Line
2	mjames	1	/**
		2	******************************************************************************
		3	* @file stm32f0xx_ll_gpio.c
		4	* @author MCD Application Team
		5	* @brief GPIO LL module driver.
		6	******************************************************************************
		7	* @attention
		8	*
		9	* <h2><center>© Copyright (c) 2016 STMicroelectronics.
		10	* All rights reserved.</center></h2>
		11	*
		12	* This software component is licensed by ST under BSD 3-Clause license,
		13	* the "License"; You may not use this file except in compliance with the
		14	* License. You may obtain a copy of the License at:
		15	* opensource.org/licenses/BSD-3-Clause
		16	*
		17	******************************************************************************
		18	*/
		19
		20	#if defined(USE_FULL_LL_DRIVER)
		21
		22	/* Includes ------------------------------------------------------------------*/
		23	#include "stm32f0xx_ll_gpio.h"
		24	#include "stm32f0xx_ll_bus.h"
		25	#ifdef USE_FULL_ASSERT
		26	#include "stm32_assert.h"
		27	#else
		28	#define assert_param(expr) ((void)0U)
		29	#endif
		30
		31	/** @addtogroup STM32F0xx_LL_Driver
		32	* @{
		33	*/
		34
		35	#if defined (GPIOA) \|\| defined (GPIOB) \|\| defined (GPIOC) \|\| defined (GPIOD) \|\| defined (GPIOE) \|\| defined (GPIOF)
		36
		37	/** @addtogroup GPIO_LL
		38	* @{
		39	*/
		40	/** MISRA C:2012 deviation rule has been granted for following rules:
		41	* Rule-12.2 - Medium: RHS argument is in interval [0,INF] which is out of
		42	* range of the shift operator in following API :
		43	* LL_GPIO_Init
		44	* LL_GPIO_DeInit
		45	* LL_GPIO_SetPinMode
		46	* LL_GPIO_GetPinMode
		47	* LL_GPIO_SetPinSpeed
		48	* LL_GPIO_GetPinSpeed
		49	* LL_GPIO_SetPinPull
		50	* LL_GPIO_GetPinPull
		51	* LL_GPIO_GetAFPin_0_7
		52	* LL_GPIO_SetAFPin_0_7
		53	* LL_GPIO_SetAFPin_8_15
		54	* LL_GPIO_GetAFPin_8_15
		55	*/
		56
		57	/* Private types -------------------------------------------------------------*/
		58	/* Private variables ---------------------------------------------------------*/
		59	/* Private constants ---------------------------------------------------------*/
		60	/* Private macros ------------------------------------------------------------*/
		61	/** @addtogroup GPIO_LL_Private_Macros
		62	* @{
		63	*/
		64	#define IS_LL_GPIO_PIN(__VALUE__) (((0x00u) < (__VALUE__)) && ((__VALUE__) <= (LL_GPIO_PIN_ALL)))
		65
		66	#define IS_LL_GPIO_MODE(__VALUE__) (((__VALUE__) == LL_GPIO_MODE_INPUT) \|\|\
		67	((__VALUE__) == LL_GPIO_MODE_OUTPUT) \|\|\
		68	((__VALUE__) == LL_GPIO_MODE_ALTERNATE) \|\|\
		69	((__VALUE__) == LL_GPIO_MODE_ANALOG))
		70
		71	#define IS_LL_GPIO_OUTPUT_TYPE(__VALUE__) (((__VALUE__) == LL_GPIO_OUTPUT_PUSHPULL) \|\|\
		72	((__VALUE__) == LL_GPIO_OUTPUT_OPENDRAIN))
		73
		74	#define IS_LL_GPIO_SPEED(__VALUE__) (((__VALUE__) == LL_GPIO_SPEED_FREQ_LOW) \|\|\
		75	((__VALUE__) == LL_GPIO_SPEED_FREQ_MEDIUM) \|\|\
		76	((__VALUE__) == LL_GPIO_SPEED_FREQ_HIGH))
		77
		78	#define IS_LL_GPIO_PULL(__VALUE__) (((__VALUE__) == LL_GPIO_PULL_NO) \|\|\
		79	((__VALUE__) == LL_GPIO_PULL_UP) \|\|\
		80	((__VALUE__) == LL_GPIO_PULL_DOWN))
		81
		82	#define IS_LL_GPIO_ALTERNATE(__VALUE__) (((__VALUE__) == LL_GPIO_AF_0 ) \|\|\
		83	((__VALUE__) == LL_GPIO_AF_1 ) \|\|\
		84	((__VALUE__) == LL_GPIO_AF_2 ) \|\|\
		85	((__VALUE__) == LL_GPIO_AF_3 ) \|\|\
		86	((__VALUE__) == LL_GPIO_AF_4 ) \|\|\
		87	((__VALUE__) == LL_GPIO_AF_5 ) \|\|\
		88	((__VALUE__) == LL_GPIO_AF_6 ) \|\|\
		89	((__VALUE__) == LL_GPIO_AF_7 ))
		90	/**
		91	* @}
		92	*/
		93
		94	/* Private function prototypes -----------------------------------------------*/
		95
		96	/* Exported functions --------------------------------------------------------*/
		97	/** @addtogroup GPIO_LL_Exported_Functions
		98	* @{
		99	*/
		100
		101	/** @addtogroup GPIO_LL_EF_Init
		102	* @{
		103	*/
		104
		105	/**
		106	* @brief De-initialize GPIO registers (Registers restored to their default values).
		107	* @param GPIOx GPIO Port
		108	* @retval An ErrorStatus enumeration value:
		109	* - SUCCESS: GPIO registers are de-initialized
		110	* - ERROR: Wrong GPIO Port
		111	*/
		112	ErrorStatus LL_GPIO_DeInit(GPIO_TypeDef *GPIOx)
		113	{
		114	ErrorStatus status = SUCCESS;
		115
		116	/* Check the parameters */
		117	assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
		118
		119	/* Force and Release reset on clock of GPIOx Port */
		120	if (GPIOx == GPIOA)
		121	{
		122	LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOA);
		123	LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOA);
		124	}
		125	else if (GPIOx == GPIOB)
		126	{
		127	LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOB);
		128	LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOB);
		129	}
		130	else if (GPIOx == GPIOC)
		131	{
		132	LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOC);
		133	LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOC);
		134	}
		135	#if defined(GPIOD)
		136	else if (GPIOx == GPIOD)
		137	{
		138	LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOD);
		139	LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOD);
		140	}
		141	#endif /* GPIOD */
		142	#if defined(GPIOE)
		143	else if (GPIOx == GPIOE)
		144	{
		145	LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOE);
		146	LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOE);
		147	}
		148	#endif /* GPIOE */
		149	#if defined(GPIOF)
		150	else if (GPIOx == GPIOF)
		151	{
		152	LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_GPIOF);
		153	LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_GPIOF);
		154	}
		155	#endif /* GPIOF */
		156	else
		157	{
		158	status = ERROR;
		159	}
		160
		161	return (status);
		162	}
		163
		164	/**
		165	* @brief Initialize GPIO registers according to the specified parameters in GPIO_InitStruct.
		166	* @param GPIOx GPIO Port
		167	* @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure
		168	* that contains the configuration information for the specified GPIO peripheral.
		169	* @retval An ErrorStatus enumeration value:
		170	* - SUCCESS: GPIO registers are initialized according to GPIO_InitStruct content
		171	* - ERROR: Not applicable
		172	*/
		173	ErrorStatus LL_GPIO_Init(GPIO_TypeDef GPIOx, LL_GPIO_InitTypeDef GPIO_InitStruct)
		174	{
		175	uint32_t pinpos;
		176	uint32_t currentpin;
		177
		178	/* Check the parameters */
		179	assert_param(IS_GPIO_ALL_INSTANCE(GPIOx));
		180	assert_param(IS_LL_GPIO_PIN(GPIO_InitStruct->Pin));
		181	assert_param(IS_LL_GPIO_MODE(GPIO_InitStruct->Mode));
		182	assert_param(IS_LL_GPIO_PULL(GPIO_InitStruct->Pull));
		183
		184	/* ------------------------- Configure the port pins ---------------- */
		185	/* Initialize pinpos on first pin set */
		186	pinpos = 0;
		187
		188	/* Configure the port pins */
		189	while (((GPIO_InitStruct->Pin) >> pinpos) != 0x00u)
		190	{
		191	/* Get current io position */
		192	currentpin = (GPIO_InitStruct->Pin) & (0x00000001uL << pinpos);
		193
		194	if (currentpin != 0x00u)
		195	{
		196	/* Pin Mode configuration */
		197	LL_GPIO_SetPinMode(GPIOx, currentpin, GPIO_InitStruct->Mode);
		198
		199	if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) \|\| (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE))
		200	{
		201	/* Check Speed mode parameters */
		202	assert_param(IS_LL_GPIO_SPEED(GPIO_InitStruct->Speed));
		203
		204	/* Speed mode configuration */
		205	LL_GPIO_SetPinSpeed(GPIOx, currentpin, GPIO_InitStruct->Speed);
		206	}
		207
		208	/* Pull-up Pull down resistor configuration*/
		209	LL_GPIO_SetPinPull(GPIOx, currentpin, GPIO_InitStruct->Pull);
		210
		211	if (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE)
		212	{
		213	/* Check Alternate parameter */
		214	assert_param(IS_LL_GPIO_ALTERNATE(GPIO_InitStruct->Alternate));
		215
		216	/* Speed mode configuration */
		217	if (currentpin < LL_GPIO_PIN_8)
		218	{
		219	LL_GPIO_SetAFPin_0_7(GPIOx, currentpin, GPIO_InitStruct->Alternate);
		220	}
		221	else
		222	{
		223	LL_GPIO_SetAFPin_8_15(GPIOx, currentpin, GPIO_InitStruct->Alternate);
		224	}
		225	}
		226	}
		227	pinpos++;
		228	}
		229
		230	if ((GPIO_InitStruct->Mode == LL_GPIO_MODE_OUTPUT) \|\| (GPIO_InitStruct->Mode == LL_GPIO_MODE_ALTERNATE))
		231	{
		232	/* Check Output mode parameters */
		233	assert_param(IS_LL_GPIO_OUTPUT_TYPE(GPIO_InitStruct->OutputType));
		234
		235	/* Output mode configuration*/
		236	LL_GPIO_SetPinOutputType(GPIOx, GPIO_InitStruct->Pin, GPIO_InitStruct->OutputType);
		237
		238	}
		239	return (SUCCESS);
		240	}
		241
		242	/**
		243	* @brief Set each @ref LL_GPIO_InitTypeDef field to default value.
		244	* @param GPIO_InitStruct pointer to a @ref LL_GPIO_InitTypeDef structure
		245	* whose fields will be set to default values.
		246	* @retval None
		247	*/
		248
		249	void LL_GPIO_StructInit(LL_GPIO_InitTypeDef *GPIO_InitStruct)
		250	{
		251	/* Reset GPIO init structure parameters values */
		252	GPIO_InitStruct->Pin = LL_GPIO_PIN_ALL;
		253	GPIO_InitStruct->Mode = LL_GPIO_MODE_ANALOG;
		254	GPIO_InitStruct->Speed = LL_GPIO_SPEED_FREQ_LOW;
		255	GPIO_InitStruct->OutputType = LL_GPIO_OUTPUT_PUSHPULL;
		256	GPIO_InitStruct->Pull = LL_GPIO_PULL_NO;
		257	GPIO_InitStruct->Alternate = LL_GPIO_AF_0;
		258	}
		259
		260	/**
		261	* @}
		262	*/
		263
		264	/**
		265	* @}
		266	*/
		267
		268	/**
		269	* @}
		270	*/
		271
		272	#endif /* defined (GPIOA) \|\| defined (GPIOB) \|\| defined (GPIOC) \|\| defined (GPIOD) \|\| defined (GPIOE) \|\| defined (GPIOF) */
		273
		274	/**
		275	* @}
		276	*/
		277
		278	#endif /* USE_FULL_LL_DRIVER */
		279
		280	/********************** (C) COPYRIGHT STMicroelectronics *END OF FILE**/

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(root)/trunk/Drivers/STM32F0xx_HAL_Driver/Src/stm32f0xx_ll_gpio.c – Rev 2