Hal Drivers for L4
Dependents: BSP OneHopeOnePrayer FINAL_AUDIO_RECORD AudioDemo
Fork of STM32L4xx_HAL_Driver by
Src/stm32l4xx_hal_gpio.c@0:80ee8f3b695e, 2015-11-02 (annotated)
- Committer:
- EricLew
- Date:
- Mon Nov 02 19:37:23 2015 +0000
- Revision:
- 0:80ee8f3b695e
Errors are with definitions of LCD and QSPI functions. I believe all .h and .c files are uploaded, but there may need to be certain functions called.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
EricLew | 0:80ee8f3b695e | 1 | /** |
EricLew | 0:80ee8f3b695e | 2 | ****************************************************************************** |
EricLew | 0:80ee8f3b695e | 3 | * @file stm32l4xx_hal_gpio.c |
EricLew | 0:80ee8f3b695e | 4 | * @author MCD Application Team |
EricLew | 0:80ee8f3b695e | 5 | * @version V1.1.0 |
EricLew | 0:80ee8f3b695e | 6 | * @date 16-September-2015 |
EricLew | 0:80ee8f3b695e | 7 | * @brief GPIO HAL module driver. |
EricLew | 0:80ee8f3b695e | 8 | * This file provides firmware functions to manage the following |
EricLew | 0:80ee8f3b695e | 9 | * functionalities of the General Purpose Input/Output (GPIO) peripheral: |
EricLew | 0:80ee8f3b695e | 10 | * + Initialization and de-initialization functions |
EricLew | 0:80ee8f3b695e | 11 | * + IO operation functions |
EricLew | 0:80ee8f3b695e | 12 | * |
EricLew | 0:80ee8f3b695e | 13 | @verbatim |
EricLew | 0:80ee8f3b695e | 14 | ============================================================================== |
EricLew | 0:80ee8f3b695e | 15 | ##### GPIO Peripheral features ##### |
EricLew | 0:80ee8f3b695e | 16 | ============================================================================== |
EricLew | 0:80ee8f3b695e | 17 | [..] |
EricLew | 0:80ee8f3b695e | 18 | (+) Each port bit of the general-purpose I/O (GPIO) ports can be individually |
EricLew | 0:80ee8f3b695e | 19 | configured by software in several modes: |
EricLew | 0:80ee8f3b695e | 20 | (++) Input mode |
EricLew | 0:80ee8f3b695e | 21 | (++) Analog mode |
EricLew | 0:80ee8f3b695e | 22 | (++) Output mode |
EricLew | 0:80ee8f3b695e | 23 | (++) Alternate function mode |
EricLew | 0:80ee8f3b695e | 24 | (++) External interrupt/event lines |
EricLew | 0:80ee8f3b695e | 25 | |
EricLew | 0:80ee8f3b695e | 26 | (+) During and just after reset, the alternate functions and external interrupt |
EricLew | 0:80ee8f3b695e | 27 | lines are not active and the I/O ports are configured in input floating mode. |
EricLew | 0:80ee8f3b695e | 28 | |
EricLew | 0:80ee8f3b695e | 29 | (+) All GPIO pins have weak internal pull-up and pull-down resistors, which can be |
EricLew | 0:80ee8f3b695e | 30 | activated or not. |
EricLew | 0:80ee8f3b695e | 31 | |
EricLew | 0:80ee8f3b695e | 32 | (+) In Output or Alternate mode, each IO can be configured on open-drain or push-pull |
EricLew | 0:80ee8f3b695e | 33 | type and the IO speed can be selected depending on the VDD value. |
EricLew | 0:80ee8f3b695e | 34 | |
EricLew | 0:80ee8f3b695e | 35 | (+) The microcontroller IO pins are connected to onboard peripherals/modules through a |
EricLew | 0:80ee8f3b695e | 36 | multiplexer that allows only one peripheral alternate function (AF) connected |
EricLew | 0:80ee8f3b695e | 37 | to an IO pin at a time. In this way, there can be no conflict between peripherals |
EricLew | 0:80ee8f3b695e | 38 | sharing the same IO pin. |
EricLew | 0:80ee8f3b695e | 39 | |
EricLew | 0:80ee8f3b695e | 40 | (+) All ports have external interrupt/event capability. To use external interrupt |
EricLew | 0:80ee8f3b695e | 41 | lines, the port must be configured in input mode. All available GPIO pins are |
EricLew | 0:80ee8f3b695e | 42 | connected to the 16 external interrupt/event lines from EXTI0 to EXTI15. |
EricLew | 0:80ee8f3b695e | 43 | |
EricLew | 0:80ee8f3b695e | 44 | (+) The external interrupt/event controller consists of up to 39 edge detectors |
EricLew | 0:80ee8f3b695e | 45 | (16 lines are connected to GPIO) for generating event/interrupt requests (each |
EricLew | 0:80ee8f3b695e | 46 | input line can be independently configured to select the type (interrupt or event) |
EricLew | 0:80ee8f3b695e | 47 | and the corresponding trigger event (rising or falling or both). Each line can |
EricLew | 0:80ee8f3b695e | 48 | also be masked independently. |
EricLew | 0:80ee8f3b695e | 49 | |
EricLew | 0:80ee8f3b695e | 50 | ##### How to use this driver ##### |
EricLew | 0:80ee8f3b695e | 51 | ============================================================================== |
EricLew | 0:80ee8f3b695e | 52 | [..] |
EricLew | 0:80ee8f3b695e | 53 | (#) Enable the GPIO AHB clock using the following function: __HAL_RCC_GPIOx_CLK_ENABLE(). |
EricLew | 0:80ee8f3b695e | 54 | |
EricLew | 0:80ee8f3b695e | 55 | (#) Configure the GPIO pin(s) using HAL_GPIO_Init(). |
EricLew | 0:80ee8f3b695e | 56 | (++) Configure the IO mode using "Mode" member from GPIO_InitTypeDef structure |
EricLew | 0:80ee8f3b695e | 57 | (++) Activate Pull-up, Pull-down resistor using "Pull" member from GPIO_InitTypeDef |
EricLew | 0:80ee8f3b695e | 58 | structure. |
EricLew | 0:80ee8f3b695e | 59 | (++) In case of Output or alternate function mode selection: the speed is |
EricLew | 0:80ee8f3b695e | 60 | configured through "Speed" member from GPIO_InitTypeDef structure. |
EricLew | 0:80ee8f3b695e | 61 | (++) In alternate mode is selection, the alternate function connected to the IO |
EricLew | 0:80ee8f3b695e | 62 | is configured through "Alternate" member from GPIO_InitTypeDef structure. |
EricLew | 0:80ee8f3b695e | 63 | (++) Analog mode is required when a pin is to be used as ADC channel |
EricLew | 0:80ee8f3b695e | 64 | or DAC output. |
EricLew | 0:80ee8f3b695e | 65 | (++) In case of external interrupt/event selection the "Mode" member from |
EricLew | 0:80ee8f3b695e | 66 | GPIO_InitTypeDef structure select the type (interrupt or event) and |
EricLew | 0:80ee8f3b695e | 67 | the corresponding trigger event (rising or falling or both). |
EricLew | 0:80ee8f3b695e | 68 | |
EricLew | 0:80ee8f3b695e | 69 | (#) In case of external interrupt/event mode selection, configure NVIC IRQ priority |
EricLew | 0:80ee8f3b695e | 70 | mapped to the EXTI line using HAL_NVIC_SetPriority() and enable it using |
EricLew | 0:80ee8f3b695e | 71 | HAL_NVIC_EnableIRQ(). |
EricLew | 0:80ee8f3b695e | 72 | |
EricLew | 0:80ee8f3b695e | 73 | (#) To get the level of a pin configured in input mode use HAL_GPIO_ReadPin(). |
EricLew | 0:80ee8f3b695e | 74 | |
EricLew | 0:80ee8f3b695e | 75 | (#) To set/reset the level of a pin configured in output mode use |
EricLew | 0:80ee8f3b695e | 76 | HAL_GPIO_WritePin()/HAL_GPIO_TogglePin(). |
EricLew | 0:80ee8f3b695e | 77 | |
EricLew | 0:80ee8f3b695e | 78 | (#) To lock pin configuration until next reset use HAL_GPIO_LockPin(). |
EricLew | 0:80ee8f3b695e | 79 | |
EricLew | 0:80ee8f3b695e | 80 | (#) During and just after reset, the alternate functions are not |
EricLew | 0:80ee8f3b695e | 81 | active and the GPIO pins are configured in input floating mode (except JTAG |
EricLew | 0:80ee8f3b695e | 82 | pins). |
EricLew | 0:80ee8f3b695e | 83 | |
EricLew | 0:80ee8f3b695e | 84 | (#) The LSE oscillator pins OSC32_IN and OSC32_OUT can be used as general purpose |
EricLew | 0:80ee8f3b695e | 85 | (PC14 and PC15, respectively) when the LSE oscillator is off. The LSE has |
EricLew | 0:80ee8f3b695e | 86 | priority over the GPIO function. |
EricLew | 0:80ee8f3b695e | 87 | |
EricLew | 0:80ee8f3b695e | 88 | (#) The HSE oscillator pins OSC_IN/OSC_OUT can be used as |
EricLew | 0:80ee8f3b695e | 89 | general purpose PH0 and PH1, respectively, when the HSE oscillator is off. |
EricLew | 0:80ee8f3b695e | 90 | The HSE has priority over the GPIO function. |
EricLew | 0:80ee8f3b695e | 91 | |
EricLew | 0:80ee8f3b695e | 92 | @endverbatim |
EricLew | 0:80ee8f3b695e | 93 | ****************************************************************************** |
EricLew | 0:80ee8f3b695e | 94 | * @attention |
EricLew | 0:80ee8f3b695e | 95 | * |
EricLew | 0:80ee8f3b695e | 96 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> |
EricLew | 0:80ee8f3b695e | 97 | * |
EricLew | 0:80ee8f3b695e | 98 | * Redistribution and use in source and binary forms, with or without modification, |
EricLew | 0:80ee8f3b695e | 99 | * are permitted provided that the following conditions are met: |
EricLew | 0:80ee8f3b695e | 100 | * 1. Redistributions of source code must retain the above copyright notice, |
EricLew | 0:80ee8f3b695e | 101 | * this list of conditions and the following disclaimer. |
EricLew | 0:80ee8f3b695e | 102 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
EricLew | 0:80ee8f3b695e | 103 | * this list of conditions and the following disclaimer in the documentation |
EricLew | 0:80ee8f3b695e | 104 | * and/or other materials provided with the distribution. |
EricLew | 0:80ee8f3b695e | 105 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
EricLew | 0:80ee8f3b695e | 106 | * may be used to endorse or promote products derived from this software |
EricLew | 0:80ee8f3b695e | 107 | * without specific prior written permission. |
EricLew | 0:80ee8f3b695e | 108 | * |
EricLew | 0:80ee8f3b695e | 109 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
EricLew | 0:80ee8f3b695e | 110 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
EricLew | 0:80ee8f3b695e | 111 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
EricLew | 0:80ee8f3b695e | 112 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
EricLew | 0:80ee8f3b695e | 113 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
EricLew | 0:80ee8f3b695e | 114 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
EricLew | 0:80ee8f3b695e | 115 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
EricLew | 0:80ee8f3b695e | 116 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
EricLew | 0:80ee8f3b695e | 117 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
EricLew | 0:80ee8f3b695e | 118 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
EricLew | 0:80ee8f3b695e | 119 | * |
EricLew | 0:80ee8f3b695e | 120 | ****************************************************************************** |
EricLew | 0:80ee8f3b695e | 121 | */ |
EricLew | 0:80ee8f3b695e | 122 | |
EricLew | 0:80ee8f3b695e | 123 | /* Includes ------------------------------------------------------------------*/ |
EricLew | 0:80ee8f3b695e | 124 | #include "stm32l4xx_hal.h" |
EricLew | 0:80ee8f3b695e | 125 | |
EricLew | 0:80ee8f3b695e | 126 | /** @addtogroup STM32L4xx_HAL_Driver |
EricLew | 0:80ee8f3b695e | 127 | * @{ |
EricLew | 0:80ee8f3b695e | 128 | */ |
EricLew | 0:80ee8f3b695e | 129 | |
EricLew | 0:80ee8f3b695e | 130 | /** @defgroup GPIO GPIO |
EricLew | 0:80ee8f3b695e | 131 | * @brief GPIO HAL module driver |
EricLew | 0:80ee8f3b695e | 132 | * @{ |
EricLew | 0:80ee8f3b695e | 133 | */ |
EricLew | 0:80ee8f3b695e | 134 | |
EricLew | 0:80ee8f3b695e | 135 | #ifdef HAL_GPIO_MODULE_ENABLED |
EricLew | 0:80ee8f3b695e | 136 | |
EricLew | 0:80ee8f3b695e | 137 | /* Private typedef -----------------------------------------------------------*/ |
EricLew | 0:80ee8f3b695e | 138 | /* Private defines -----------------------------------------------------------*/ |
EricLew | 0:80ee8f3b695e | 139 | /** @defgroup GPIO_Private_Defines GPIO Private Defines |
EricLew | 0:80ee8f3b695e | 140 | * @{ |
EricLew | 0:80ee8f3b695e | 141 | */ |
EricLew | 0:80ee8f3b695e | 142 | #define GPIO_MODE ((uint32_t)0x00000003) |
EricLew | 0:80ee8f3b695e | 143 | #define ANALOG_MODE ((uint32_t)0x00000008) |
EricLew | 0:80ee8f3b695e | 144 | #define EXTI_MODE ((uint32_t)0x10000000) |
EricLew | 0:80ee8f3b695e | 145 | #define GPIO_MODE_IT ((uint32_t)0x00010000) |
EricLew | 0:80ee8f3b695e | 146 | #define GPIO_MODE_EVT ((uint32_t)0x00020000) |
EricLew | 0:80ee8f3b695e | 147 | #define RISING_EDGE ((uint32_t)0x00100000) |
EricLew | 0:80ee8f3b695e | 148 | #define FALLING_EDGE ((uint32_t)0x00200000) |
EricLew | 0:80ee8f3b695e | 149 | #define GPIO_OUTPUT_TYPE ((uint32_t)0x00000010) |
EricLew | 0:80ee8f3b695e | 150 | |
EricLew | 0:80ee8f3b695e | 151 | #define GPIO_NUMBER ((uint32_t)16) |
EricLew | 0:80ee8f3b695e | 152 | /** |
EricLew | 0:80ee8f3b695e | 153 | * @} |
EricLew | 0:80ee8f3b695e | 154 | */ |
EricLew | 0:80ee8f3b695e | 155 | |
EricLew | 0:80ee8f3b695e | 156 | /* Private macros ------------------------------------------------------------*/ |
EricLew | 0:80ee8f3b695e | 157 | /* Private macros ------------------------------------------------------------*/ |
EricLew | 0:80ee8f3b695e | 158 | /** @defgroup GPIO_Private_Macros GPIO Private Macros |
EricLew | 0:80ee8f3b695e | 159 | * @{ |
EricLew | 0:80ee8f3b695e | 160 | */ |
EricLew | 0:80ee8f3b695e | 161 | /** |
EricLew | 0:80ee8f3b695e | 162 | * @} |
EricLew | 0:80ee8f3b695e | 163 | */ |
EricLew | 0:80ee8f3b695e | 164 | /* Private variables ---------------------------------------------------------*/ |
EricLew | 0:80ee8f3b695e | 165 | /* Private function prototypes -----------------------------------------------*/ |
EricLew | 0:80ee8f3b695e | 166 | /* Exported functions --------------------------------------------------------*/ |
EricLew | 0:80ee8f3b695e | 167 | |
EricLew | 0:80ee8f3b695e | 168 | /** @defgroup GPIO_Exported_Functions GPIO Exported Functions |
EricLew | 0:80ee8f3b695e | 169 | * @{ |
EricLew | 0:80ee8f3b695e | 170 | */ |
EricLew | 0:80ee8f3b695e | 171 | |
EricLew | 0:80ee8f3b695e | 172 | /** @defgroup GPIO_Exported_Functions_Group1 Initialization/de-initialization functions |
EricLew | 0:80ee8f3b695e | 173 | * @brief Initialization and Configuration functions |
EricLew | 0:80ee8f3b695e | 174 | * |
EricLew | 0:80ee8f3b695e | 175 | @verbatim |
EricLew | 0:80ee8f3b695e | 176 | =============================================================================== |
EricLew | 0:80ee8f3b695e | 177 | ##### Initialization and de-initialization functions ##### |
EricLew | 0:80ee8f3b695e | 178 | =============================================================================== |
EricLew | 0:80ee8f3b695e | 179 | |
EricLew | 0:80ee8f3b695e | 180 | @endverbatim |
EricLew | 0:80ee8f3b695e | 181 | * @{ |
EricLew | 0:80ee8f3b695e | 182 | */ |
EricLew | 0:80ee8f3b695e | 183 | |
EricLew | 0:80ee8f3b695e | 184 | /** |
EricLew | 0:80ee8f3b695e | 185 | * @brief Initialize the GPIOx peripheral according to the specified parameters in the GPIO_Init. |
EricLew | 0:80ee8f3b695e | 186 | * @param GPIOx: where x can be (A..H) to select the GPIO peripheral for STM32L4 family |
EricLew | 0:80ee8f3b695e | 187 | * @param GPIO_Init: pointer to a GPIO_InitTypeDef structure that contains |
EricLew | 0:80ee8f3b695e | 188 | * the configuration information for the specified GPIO peripheral. |
EricLew | 0:80ee8f3b695e | 189 | * @retval None |
EricLew | 0:80ee8f3b695e | 190 | */ |
EricLew | 0:80ee8f3b695e | 191 | void HAL_GPIO_Init(GPIO_TypeDef *GPIOx, GPIO_InitTypeDef *GPIO_Init) |
EricLew | 0:80ee8f3b695e | 192 | { |
EricLew | 0:80ee8f3b695e | 193 | uint32_t position = 0x00; |
EricLew | 0:80ee8f3b695e | 194 | uint32_t iocurrent = 0x00; |
EricLew | 0:80ee8f3b695e | 195 | uint32_t temp = 0x00; |
EricLew | 0:80ee8f3b695e | 196 | |
EricLew | 0:80ee8f3b695e | 197 | /* Check the parameters */ |
EricLew | 0:80ee8f3b695e | 198 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
EricLew | 0:80ee8f3b695e | 199 | assert_param(IS_GPIO_PIN(GPIO_Init->Pin)); |
EricLew | 0:80ee8f3b695e | 200 | assert_param(IS_GPIO_MODE(GPIO_Init->Mode)); |
EricLew | 0:80ee8f3b695e | 201 | assert_param(IS_GPIO_PULL(GPIO_Init->Pull)); |
EricLew | 0:80ee8f3b695e | 202 | |
EricLew | 0:80ee8f3b695e | 203 | /* Configure the port pins */ |
EricLew | 0:80ee8f3b695e | 204 | while (((GPIO_Init->Pin) >> position) != RESET) |
EricLew | 0:80ee8f3b695e | 205 | { |
EricLew | 0:80ee8f3b695e | 206 | /* Get current io position */ |
EricLew | 0:80ee8f3b695e | 207 | iocurrent = (GPIO_Init->Pin) & (1U << position); |
EricLew | 0:80ee8f3b695e | 208 | |
EricLew | 0:80ee8f3b695e | 209 | if(iocurrent) |
EricLew | 0:80ee8f3b695e | 210 | { |
EricLew | 0:80ee8f3b695e | 211 | /*--------------------- GPIO Mode Configuration ------------------------*/ |
EricLew | 0:80ee8f3b695e | 212 | /* In case of Alternate function mode selection */ |
EricLew | 0:80ee8f3b695e | 213 | if((GPIO_Init->Mode == GPIO_MODE_AF_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_OD)) |
EricLew | 0:80ee8f3b695e | 214 | { |
EricLew | 0:80ee8f3b695e | 215 | /* Check the Alternate function parameters */ |
EricLew | 0:80ee8f3b695e | 216 | assert_param(IS_GPIO_AF_INSTANCE(GPIOx)); |
EricLew | 0:80ee8f3b695e | 217 | assert_param(IS_GPIO_AF(GPIO_Init->Alternate)); |
EricLew | 0:80ee8f3b695e | 218 | |
EricLew | 0:80ee8f3b695e | 219 | /* Configure Alternate function mapped with the current IO */ |
EricLew | 0:80ee8f3b695e | 220 | temp = GPIOx->AFR[position >> 3]; |
EricLew | 0:80ee8f3b695e | 221 | temp &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ; |
EricLew | 0:80ee8f3b695e | 222 | temp |= ((uint32_t)(GPIO_Init->Alternate) << (((uint32_t)position & (uint32_t)0x07) * 4)); |
EricLew | 0:80ee8f3b695e | 223 | GPIOx->AFR[position >> 3] = temp; |
EricLew | 0:80ee8f3b695e | 224 | } |
EricLew | 0:80ee8f3b695e | 225 | |
EricLew | 0:80ee8f3b695e | 226 | /* Configure IO Direction mode (Input, Output, Alternate or Analog) */ |
EricLew | 0:80ee8f3b695e | 227 | temp = GPIOx->MODER; |
EricLew | 0:80ee8f3b695e | 228 | temp &= ~(GPIO_MODER_MODER0 << (position * 2)); |
EricLew | 0:80ee8f3b695e | 229 | temp |= ((GPIO_Init->Mode & GPIO_MODE) << (position * 2)); |
EricLew | 0:80ee8f3b695e | 230 | GPIOx->MODER = temp; |
EricLew | 0:80ee8f3b695e | 231 | |
EricLew | 0:80ee8f3b695e | 232 | /* In case of Output or Alternate function mode selection */ |
EricLew | 0:80ee8f3b695e | 233 | if((GPIO_Init->Mode == GPIO_MODE_OUTPUT_PP) || (GPIO_Init->Mode == GPIO_MODE_AF_PP) || |
EricLew | 0:80ee8f3b695e | 234 | (GPIO_Init->Mode == GPIO_MODE_OUTPUT_OD) || (GPIO_Init->Mode == GPIO_MODE_AF_OD)) |
EricLew | 0:80ee8f3b695e | 235 | { |
EricLew | 0:80ee8f3b695e | 236 | /* Check the Speed parameter */ |
EricLew | 0:80ee8f3b695e | 237 | assert_param(IS_GPIO_SPEED(GPIO_Init->Speed)); |
EricLew | 0:80ee8f3b695e | 238 | /* Configure the IO Speed */ |
EricLew | 0:80ee8f3b695e | 239 | temp = GPIOx->OSPEEDR; |
EricLew | 0:80ee8f3b695e | 240 | temp &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2)); |
EricLew | 0:80ee8f3b695e | 241 | temp |= (GPIO_Init->Speed << (position * 2)); |
EricLew | 0:80ee8f3b695e | 242 | GPIOx->OSPEEDR = temp; |
EricLew | 0:80ee8f3b695e | 243 | |
EricLew | 0:80ee8f3b695e | 244 | /* Configure the IO Output Type */ |
EricLew | 0:80ee8f3b695e | 245 | temp = GPIOx->OTYPER; |
EricLew | 0:80ee8f3b695e | 246 | temp &= ~(GPIO_OTYPER_OT_0 << position) ; |
EricLew | 0:80ee8f3b695e | 247 | temp |= (((GPIO_Init->Mode & GPIO_OUTPUT_TYPE) >> 4) << position); |
EricLew | 0:80ee8f3b695e | 248 | GPIOx->OTYPER = temp; |
EricLew | 0:80ee8f3b695e | 249 | } |
EricLew | 0:80ee8f3b695e | 250 | |
EricLew | 0:80ee8f3b695e | 251 | /* In case of Analog mode, check if ADC control mode is selected */ |
EricLew | 0:80ee8f3b695e | 252 | if((GPIO_Init->Mode & GPIO_MODE_ANALOG) == GPIO_MODE_ANALOG) |
EricLew | 0:80ee8f3b695e | 253 | { |
EricLew | 0:80ee8f3b695e | 254 | /* Configure the IO Output Type */ |
EricLew | 0:80ee8f3b695e | 255 | temp = GPIOx->ASCR; |
EricLew | 0:80ee8f3b695e | 256 | temp &= ~(GPIO_ASCR_EN_0 << position) ; |
EricLew | 0:80ee8f3b695e | 257 | temp |= (((GPIO_Init->Mode & ANALOG_MODE) >> 3) << position); |
EricLew | 0:80ee8f3b695e | 258 | GPIOx->ASCR = temp; |
EricLew | 0:80ee8f3b695e | 259 | } |
EricLew | 0:80ee8f3b695e | 260 | |
EricLew | 0:80ee8f3b695e | 261 | /* Activate the Pull-up or Pull down resistor for the current IO */ |
EricLew | 0:80ee8f3b695e | 262 | temp = GPIOx->PUPDR; |
EricLew | 0:80ee8f3b695e | 263 | temp &= ~(GPIO_PUPDR_PUPDR0 << (position * 2)); |
EricLew | 0:80ee8f3b695e | 264 | temp |= ((GPIO_Init->Pull) << (position * 2)); |
EricLew | 0:80ee8f3b695e | 265 | GPIOx->PUPDR = temp; |
EricLew | 0:80ee8f3b695e | 266 | |
EricLew | 0:80ee8f3b695e | 267 | /*--------------------- EXTI Mode Configuration ------------------------*/ |
EricLew | 0:80ee8f3b695e | 268 | /* Configure the External Interrupt or event for the current IO */ |
EricLew | 0:80ee8f3b695e | 269 | if((GPIO_Init->Mode & EXTI_MODE) == EXTI_MODE) |
EricLew | 0:80ee8f3b695e | 270 | { |
EricLew | 0:80ee8f3b695e | 271 | /* Enable SYSCFG Clock */ |
EricLew | 0:80ee8f3b695e | 272 | __HAL_RCC_SYSCFG_CLK_ENABLE(); |
EricLew | 0:80ee8f3b695e | 273 | |
EricLew | 0:80ee8f3b695e | 274 | temp = SYSCFG->EXTICR[position >> 2]; |
EricLew | 0:80ee8f3b695e | 275 | temp &= ~(((uint32_t)0x0F) << (4 * (position & 0x03))); |
EricLew | 0:80ee8f3b695e | 276 | temp |= (GPIO_GET_INDEX(GPIOx) << (4 * (position & 0x03))); |
EricLew | 0:80ee8f3b695e | 277 | SYSCFG->EXTICR[position >> 2] = temp; |
EricLew | 0:80ee8f3b695e | 278 | |
EricLew | 0:80ee8f3b695e | 279 | /* Clear EXTI line configuration */ |
EricLew | 0:80ee8f3b695e | 280 | temp = EXTI->IMR1; |
EricLew | 0:80ee8f3b695e | 281 | temp &= ~((uint32_t)iocurrent); |
EricLew | 0:80ee8f3b695e | 282 | if((GPIO_Init->Mode & GPIO_MODE_IT) == GPIO_MODE_IT) |
EricLew | 0:80ee8f3b695e | 283 | { |
EricLew | 0:80ee8f3b695e | 284 | temp |= iocurrent; |
EricLew | 0:80ee8f3b695e | 285 | } |
EricLew | 0:80ee8f3b695e | 286 | EXTI->IMR1 = temp; |
EricLew | 0:80ee8f3b695e | 287 | |
EricLew | 0:80ee8f3b695e | 288 | temp = EXTI->EMR1; |
EricLew | 0:80ee8f3b695e | 289 | temp &= ~((uint32_t)iocurrent); |
EricLew | 0:80ee8f3b695e | 290 | if((GPIO_Init->Mode & GPIO_MODE_EVT) == GPIO_MODE_EVT) |
EricLew | 0:80ee8f3b695e | 291 | { |
EricLew | 0:80ee8f3b695e | 292 | temp |= iocurrent; |
EricLew | 0:80ee8f3b695e | 293 | } |
EricLew | 0:80ee8f3b695e | 294 | EXTI->EMR1 = temp; |
EricLew | 0:80ee8f3b695e | 295 | |
EricLew | 0:80ee8f3b695e | 296 | /* Clear Rising Falling edge configuration */ |
EricLew | 0:80ee8f3b695e | 297 | temp = EXTI->RTSR1; |
EricLew | 0:80ee8f3b695e | 298 | temp &= ~((uint32_t)iocurrent); |
EricLew | 0:80ee8f3b695e | 299 | if((GPIO_Init->Mode & RISING_EDGE) == RISING_EDGE) |
EricLew | 0:80ee8f3b695e | 300 | { |
EricLew | 0:80ee8f3b695e | 301 | temp |= iocurrent; |
EricLew | 0:80ee8f3b695e | 302 | } |
EricLew | 0:80ee8f3b695e | 303 | EXTI->RTSR1 = temp; |
EricLew | 0:80ee8f3b695e | 304 | |
EricLew | 0:80ee8f3b695e | 305 | temp = EXTI->FTSR1; |
EricLew | 0:80ee8f3b695e | 306 | temp &= ~((uint32_t)iocurrent); |
EricLew | 0:80ee8f3b695e | 307 | if((GPIO_Init->Mode & FALLING_EDGE) == FALLING_EDGE) |
EricLew | 0:80ee8f3b695e | 308 | { |
EricLew | 0:80ee8f3b695e | 309 | temp |= iocurrent; |
EricLew | 0:80ee8f3b695e | 310 | } |
EricLew | 0:80ee8f3b695e | 311 | EXTI->FTSR1 = temp; |
EricLew | 0:80ee8f3b695e | 312 | } |
EricLew | 0:80ee8f3b695e | 313 | } |
EricLew | 0:80ee8f3b695e | 314 | |
EricLew | 0:80ee8f3b695e | 315 | position++; |
EricLew | 0:80ee8f3b695e | 316 | } |
EricLew | 0:80ee8f3b695e | 317 | } |
EricLew | 0:80ee8f3b695e | 318 | |
EricLew | 0:80ee8f3b695e | 319 | /** |
EricLew | 0:80ee8f3b695e | 320 | * @brief De-initialize the GPIOx peripheral registers to their default reset values. |
EricLew | 0:80ee8f3b695e | 321 | * @param GPIOx: where x can be (A..H) to select the GPIO peripheral for STM32L4 family |
EricLew | 0:80ee8f3b695e | 322 | * @param GPIO_Pin: specifies the port bit to be written. |
EricLew | 0:80ee8f3b695e | 323 | * This parameter can be one of GPIO_PIN_x where x can be (0..15). |
EricLew | 0:80ee8f3b695e | 324 | * @retval None |
EricLew | 0:80ee8f3b695e | 325 | */ |
EricLew | 0:80ee8f3b695e | 326 | void HAL_GPIO_DeInit(GPIO_TypeDef *GPIOx, uint32_t GPIO_Pin) |
EricLew | 0:80ee8f3b695e | 327 | { |
EricLew | 0:80ee8f3b695e | 328 | uint32_t position = 0x00; |
EricLew | 0:80ee8f3b695e | 329 | uint32_t iocurrent = 0x00; |
EricLew | 0:80ee8f3b695e | 330 | uint32_t tmp = 0x00; |
EricLew | 0:80ee8f3b695e | 331 | |
EricLew | 0:80ee8f3b695e | 332 | /* Check the parameters */ |
EricLew | 0:80ee8f3b695e | 333 | assert_param(IS_GPIO_ALL_INSTANCE(GPIOx)); |
EricLew | 0:80ee8f3b695e | 334 | assert_param(IS_GPIO_PIN(GPIO_Pin)); |
EricLew | 0:80ee8f3b695e | 335 | |
EricLew | 0:80ee8f3b695e | 336 | /* Configure the port pins */ |
EricLew | 0:80ee8f3b695e | 337 | while ((GPIO_Pin >> position) != RESET) |
EricLew | 0:80ee8f3b695e | 338 | { |
EricLew | 0:80ee8f3b695e | 339 | /* Get current io position */ |
EricLew | 0:80ee8f3b695e | 340 | iocurrent = (GPIO_Pin) & (1U << position); |
EricLew | 0:80ee8f3b695e | 341 | |
EricLew | 0:80ee8f3b695e | 342 | if (iocurrent) |
EricLew | 0:80ee8f3b695e | 343 | { |
EricLew | 0:80ee8f3b695e | 344 | /*------------------------- GPIO Mode Configuration --------------------*/ |
EricLew | 0:80ee8f3b695e | 345 | /* Configure IO in Analog Mode */ |
EricLew | 0:80ee8f3b695e | 346 | GPIOx->MODER |= (GPIO_MODER_MODER0 << (position * 2)); |
EricLew | 0:80ee8f3b695e | 347 | |
EricLew | 0:80ee8f3b695e | 348 | /* Configure the default Alternate Function in current IO */ |
EricLew | 0:80ee8f3b695e | 349 | GPIOx->AFR[position >> 3] &= ~((uint32_t)0xF << ((uint32_t)(position & (uint32_t)0x07) * 4)) ; |
EricLew | 0:80ee8f3b695e | 350 | |
EricLew | 0:80ee8f3b695e | 351 | /* Configure the default value for IO Speed */ |
EricLew | 0:80ee8f3b695e | 352 | GPIOx->OSPEEDR &= ~(GPIO_OSPEEDER_OSPEEDR0 << (position * 2)); |
EricLew | 0:80ee8f3b695e | 353 | |
EricLew | 0:80ee8f3b695e | 354 | /* Configure the default value IO Output Type */ |
EricLew | 0:80ee8f3b695e | 355 | GPIOx->OTYPER &= ~(GPIO_OTYPER_OT_0 << position) ; |
EricLew | 0:80ee8f3b695e | 356 | |
EricLew | 0:80ee8f3b695e | 357 | /* Deactivate the Pull-up and Pull-down resistor for the current IO */ |
EricLew | 0:80ee8f3b695e | 358 | GPIOx->PUPDR &= ~(GPIO_PUPDR_PUPDR0 << (position * 2)); |
EricLew | 0:80ee8f3b695e | 359 | |
EricLew | 0:80ee8f3b695e | 360 | /* Deactivate the Control bit of Analog mode for the current IO */ |
EricLew | 0:80ee8f3b695e | 361 | GPIOx->ASCR &= ~(GPIO_ASCR_EN_0<< position); |
EricLew | 0:80ee8f3b695e | 362 | |
EricLew | 0:80ee8f3b695e | 363 | /*------------------------- EXTI Mode Configuration --------------------*/ |
EricLew | 0:80ee8f3b695e | 364 | /* Clear the External Interrupt or Event for the current IO */ |
EricLew | 0:80ee8f3b695e | 365 | |
EricLew | 0:80ee8f3b695e | 366 | tmp = SYSCFG->EXTICR[position >> 2]; |
EricLew | 0:80ee8f3b695e | 367 | tmp &= (((uint32_t)0x0F) << (4 * (position & 0x03))); |
EricLew | 0:80ee8f3b695e | 368 | if(tmp == (GPIO_GET_INDEX(GPIOx) << (4 * (position & 0x03)))) |
EricLew | 0:80ee8f3b695e | 369 | { |
EricLew | 0:80ee8f3b695e | 370 | tmp = ((uint32_t)0x0F) << (4 * (position & 0x03)); |
EricLew | 0:80ee8f3b695e | 371 | SYSCFG->EXTICR[position >> 2] &= ~tmp; |
EricLew | 0:80ee8f3b695e | 372 | |
EricLew | 0:80ee8f3b695e | 373 | /* Clear EXTI line configuration */ |
EricLew | 0:80ee8f3b695e | 374 | EXTI->IMR1 &= ~((uint32_t)iocurrent); |
EricLew | 0:80ee8f3b695e | 375 | EXTI->EMR1 &= ~((uint32_t)iocurrent); |
EricLew | 0:80ee8f3b695e | 376 | |
EricLew | 0:80ee8f3b695e | 377 | /* Clear Rising Falling edge configuration */ |
EricLew | 0:80ee8f3b695e | 378 | EXTI->RTSR1 &= ~((uint32_t)iocurrent); |
EricLew | 0:80ee8f3b695e | 379 | EXTI->FTSR1 &= ~((uint32_t)iocurrent); |
EricLew | 0:80ee8f3b695e | 380 | } |
EricLew | 0:80ee8f3b695e | 381 | } |
EricLew | 0:80ee8f3b695e | 382 | |
EricLew | 0:80ee8f3b695e | 383 | position++; |
EricLew | 0:80ee8f3b695e | 384 | } |
EricLew | 0:80ee8f3b695e | 385 | } |
EricLew | 0:80ee8f3b695e | 386 | |
EricLew | 0:80ee8f3b695e | 387 | /** |
EricLew | 0:80ee8f3b695e | 388 | * @} |
EricLew | 0:80ee8f3b695e | 389 | */ |
EricLew | 0:80ee8f3b695e | 390 | |
EricLew | 0:80ee8f3b695e | 391 | /** @defgroup GPIO_Exported_Functions_Group2 IO operation functions |
EricLew | 0:80ee8f3b695e | 392 | * @brief GPIO Read, Write, Toggle, Lock and EXTI management functions. |
EricLew | 0:80ee8f3b695e | 393 | * |
EricLew | 0:80ee8f3b695e | 394 | @verbatim |
EricLew | 0:80ee8f3b695e | 395 | =============================================================================== |
EricLew | 0:80ee8f3b695e | 396 | ##### IO operation functions ##### |
EricLew | 0:80ee8f3b695e | 397 | =============================================================================== |
EricLew | 0:80ee8f3b695e | 398 | |
EricLew | 0:80ee8f3b695e | 399 | @endverbatim |
EricLew | 0:80ee8f3b695e | 400 | * @{ |
EricLew | 0:80ee8f3b695e | 401 | */ |
EricLew | 0:80ee8f3b695e | 402 | |
EricLew | 0:80ee8f3b695e | 403 | /** |
EricLew | 0:80ee8f3b695e | 404 | * @brief Read the specified input port pin. |
EricLew | 0:80ee8f3b695e | 405 | * @param GPIOx: where x can be (A..H) to select the GPIO peripheral for STM32L4 family |
EricLew | 0:80ee8f3b695e | 406 | * @param GPIO_Pin: specifies the port bit to read. |
EricLew | 0:80ee8f3b695e | 407 | * This parameter can be GPIO_PIN_x where x can be (0..15). |
EricLew | 0:80ee8f3b695e | 408 | * @retval The input port pin value. |
EricLew | 0:80ee8f3b695e | 409 | */ |
EricLew | 0:80ee8f3b695e | 410 | GPIO_PinState HAL_GPIO_ReadPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) |
EricLew | 0:80ee8f3b695e | 411 | { |
EricLew | 0:80ee8f3b695e | 412 | GPIO_PinState bitstatus; |
EricLew | 0:80ee8f3b695e | 413 | |
EricLew | 0:80ee8f3b695e | 414 | /* Check the parameters */ |
EricLew | 0:80ee8f3b695e | 415 | assert_param(IS_GPIO_PIN(GPIO_Pin)); |
EricLew | 0:80ee8f3b695e | 416 | |
EricLew | 0:80ee8f3b695e | 417 | if((GPIOx->IDR & GPIO_Pin) != (uint32_t)GPIO_PIN_RESET) |
EricLew | 0:80ee8f3b695e | 418 | { |
EricLew | 0:80ee8f3b695e | 419 | bitstatus = GPIO_PIN_SET; |
EricLew | 0:80ee8f3b695e | 420 | } |
EricLew | 0:80ee8f3b695e | 421 | else |
EricLew | 0:80ee8f3b695e | 422 | { |
EricLew | 0:80ee8f3b695e | 423 | bitstatus = GPIO_PIN_RESET; |
EricLew | 0:80ee8f3b695e | 424 | } |
EricLew | 0:80ee8f3b695e | 425 | return bitstatus; |
EricLew | 0:80ee8f3b695e | 426 | } |
EricLew | 0:80ee8f3b695e | 427 | |
EricLew | 0:80ee8f3b695e | 428 | /** |
EricLew | 0:80ee8f3b695e | 429 | * @brief Set or clear the selected data port bit. |
EricLew | 0:80ee8f3b695e | 430 | * |
EricLew | 0:80ee8f3b695e | 431 | * @note This function uses GPIOx_BSRR and GPIOx_BRR registers to allow atomic read/modify |
EricLew | 0:80ee8f3b695e | 432 | * accesses. In this way, there is no risk of an IRQ occurring between |
EricLew | 0:80ee8f3b695e | 433 | * the read and the modify access. |
EricLew | 0:80ee8f3b695e | 434 | * |
EricLew | 0:80ee8f3b695e | 435 | * @param GPIOx: where x can be (A..H) to select the GPIO peripheral for STM32L4 family |
EricLew | 0:80ee8f3b695e | 436 | * @param GPIO_Pin: specifies the port bit to be written. |
EricLew | 0:80ee8f3b695e | 437 | * This parameter can be one of GPIO_PIN_x where x can be (0..15). |
EricLew | 0:80ee8f3b695e | 438 | * @param PinState: specifies the value to be written to the selected bit. |
EricLew | 0:80ee8f3b695e | 439 | * This parameter can be one of the GPIO_PinState enum values: |
EricLew | 0:80ee8f3b695e | 440 | * @arg GPIO_PIN_RESET: to clear the port pin |
EricLew | 0:80ee8f3b695e | 441 | * @arg GPIO_PIN_SET: to set the port pin |
EricLew | 0:80ee8f3b695e | 442 | * @retval None |
EricLew | 0:80ee8f3b695e | 443 | */ |
EricLew | 0:80ee8f3b695e | 444 | void HAL_GPIO_WritePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin, GPIO_PinState PinState) |
EricLew | 0:80ee8f3b695e | 445 | { |
EricLew | 0:80ee8f3b695e | 446 | /* Check the parameters */ |
EricLew | 0:80ee8f3b695e | 447 | assert_param(IS_GPIO_PIN(GPIO_Pin)); |
EricLew | 0:80ee8f3b695e | 448 | assert_param(IS_GPIO_PIN_ACTION(PinState)); |
EricLew | 0:80ee8f3b695e | 449 | |
EricLew | 0:80ee8f3b695e | 450 | if(PinState != GPIO_PIN_RESET) |
EricLew | 0:80ee8f3b695e | 451 | { |
EricLew | 0:80ee8f3b695e | 452 | GPIOx->BSRR = (uint32_t)GPIO_Pin; |
EricLew | 0:80ee8f3b695e | 453 | } |
EricLew | 0:80ee8f3b695e | 454 | else |
EricLew | 0:80ee8f3b695e | 455 | { |
EricLew | 0:80ee8f3b695e | 456 | GPIOx->BRR = (uint32_t)GPIO_Pin; |
EricLew | 0:80ee8f3b695e | 457 | } |
EricLew | 0:80ee8f3b695e | 458 | } |
EricLew | 0:80ee8f3b695e | 459 | |
EricLew | 0:80ee8f3b695e | 460 | /** |
EricLew | 0:80ee8f3b695e | 461 | * @brief Toggle the specified GPIO pin. |
EricLew | 0:80ee8f3b695e | 462 | * @param GPIOx: where x can be (A..H) to select the GPIO peripheral for STM32L4 family |
EricLew | 0:80ee8f3b695e | 463 | * @param GPIO_Pin: specifies the pin to be toggled. |
EricLew | 0:80ee8f3b695e | 464 | * @retval None |
EricLew | 0:80ee8f3b695e | 465 | */ |
EricLew | 0:80ee8f3b695e | 466 | void HAL_GPIO_TogglePin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) |
EricLew | 0:80ee8f3b695e | 467 | { |
EricLew | 0:80ee8f3b695e | 468 | /* Check the parameters */ |
EricLew | 0:80ee8f3b695e | 469 | assert_param(IS_GPIO_PIN(GPIO_Pin)); |
EricLew | 0:80ee8f3b695e | 470 | |
EricLew | 0:80ee8f3b695e | 471 | GPIOx->ODR ^= GPIO_Pin; |
EricLew | 0:80ee8f3b695e | 472 | } |
EricLew | 0:80ee8f3b695e | 473 | |
EricLew | 0:80ee8f3b695e | 474 | /** |
EricLew | 0:80ee8f3b695e | 475 | * @brief Lock GPIO Pins configuration registers. |
EricLew | 0:80ee8f3b695e | 476 | * @note The locked registers are GPIOx_MODER, GPIOx_OTYPER, GPIOx_OSPEEDR, |
EricLew | 0:80ee8f3b695e | 477 | * GPIOx_PUPDR, GPIOx_AFRL and GPIOx_AFRH. |
EricLew | 0:80ee8f3b695e | 478 | * @note The configuration of the locked GPIO pins can no longer be modified |
EricLew | 0:80ee8f3b695e | 479 | * until the next reset. |
EricLew | 0:80ee8f3b695e | 480 | * @param GPIOx: where x can be (A..H) to select the GPIO peripheral for STM32L4 family |
EricLew | 0:80ee8f3b695e | 481 | * @param GPIO_Pin: specifies the port bits to be locked. |
EricLew | 0:80ee8f3b695e | 482 | * This parameter can be any combination of GPIO_Pin_x where x can be (0..15). |
EricLew | 0:80ee8f3b695e | 483 | * @retval None |
EricLew | 0:80ee8f3b695e | 484 | */ |
EricLew | 0:80ee8f3b695e | 485 | HAL_StatusTypeDef HAL_GPIO_LockPin(GPIO_TypeDef* GPIOx, uint16_t GPIO_Pin) |
EricLew | 0:80ee8f3b695e | 486 | { |
EricLew | 0:80ee8f3b695e | 487 | __IO uint32_t tmp = GPIO_LCKR_LCKK; |
EricLew | 0:80ee8f3b695e | 488 | |
EricLew | 0:80ee8f3b695e | 489 | /* Check the parameters */ |
EricLew | 0:80ee8f3b695e | 490 | assert_param(IS_GPIO_LOCK_INSTANCE(GPIOx)); |
EricLew | 0:80ee8f3b695e | 491 | assert_param(IS_GPIO_PIN(GPIO_Pin)); |
EricLew | 0:80ee8f3b695e | 492 | |
EricLew | 0:80ee8f3b695e | 493 | /* Apply lock key write sequence */ |
EricLew | 0:80ee8f3b695e | 494 | tmp |= GPIO_Pin; |
EricLew | 0:80ee8f3b695e | 495 | /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */ |
EricLew | 0:80ee8f3b695e | 496 | GPIOx->LCKR = tmp; |
EricLew | 0:80ee8f3b695e | 497 | /* Reset LCKx bit(s): LCKK='0' + LCK[15-0] */ |
EricLew | 0:80ee8f3b695e | 498 | GPIOx->LCKR = GPIO_Pin; |
EricLew | 0:80ee8f3b695e | 499 | /* Set LCKx bit(s): LCKK='1' + LCK[15-0] */ |
EricLew | 0:80ee8f3b695e | 500 | GPIOx->LCKR = tmp; |
EricLew | 0:80ee8f3b695e | 501 | /* Read LCKK bit*/ |
EricLew | 0:80ee8f3b695e | 502 | tmp = GPIOx->LCKR; |
EricLew | 0:80ee8f3b695e | 503 | |
EricLew | 0:80ee8f3b695e | 504 | if((GPIOx->LCKR & GPIO_LCKR_LCKK) != RESET) |
EricLew | 0:80ee8f3b695e | 505 | { |
EricLew | 0:80ee8f3b695e | 506 | return HAL_OK; |
EricLew | 0:80ee8f3b695e | 507 | } |
EricLew | 0:80ee8f3b695e | 508 | else |
EricLew | 0:80ee8f3b695e | 509 | { |
EricLew | 0:80ee8f3b695e | 510 | return HAL_ERROR; |
EricLew | 0:80ee8f3b695e | 511 | } |
EricLew | 0:80ee8f3b695e | 512 | } |
EricLew | 0:80ee8f3b695e | 513 | |
EricLew | 0:80ee8f3b695e | 514 | /** |
EricLew | 0:80ee8f3b695e | 515 | * @brief Handle EXTI interrupt request. |
EricLew | 0:80ee8f3b695e | 516 | * @param GPIO_Pin: Specifies the port pin connected to corresponding EXTI line. |
EricLew | 0:80ee8f3b695e | 517 | * @retval None |
EricLew | 0:80ee8f3b695e | 518 | */ |
EricLew | 0:80ee8f3b695e | 519 | void HAL_GPIO_EXTI_IRQHandler(uint16_t GPIO_Pin) |
EricLew | 0:80ee8f3b695e | 520 | { |
EricLew | 0:80ee8f3b695e | 521 | /* EXTI line interrupt detected */ |
EricLew | 0:80ee8f3b695e | 522 | if(__HAL_GPIO_EXTI_GET_IT(GPIO_Pin) != RESET) |
EricLew | 0:80ee8f3b695e | 523 | { |
EricLew | 0:80ee8f3b695e | 524 | __HAL_GPIO_EXTI_CLEAR_IT(GPIO_Pin); |
EricLew | 0:80ee8f3b695e | 525 | HAL_GPIO_EXTI_Callback(GPIO_Pin); |
EricLew | 0:80ee8f3b695e | 526 | } |
EricLew | 0:80ee8f3b695e | 527 | } |
EricLew | 0:80ee8f3b695e | 528 | |
EricLew | 0:80ee8f3b695e | 529 | /** |
EricLew | 0:80ee8f3b695e | 530 | * @brief EXTI line detection callback. |
EricLew | 0:80ee8f3b695e | 531 | * @param GPIO_Pin: Specifies the port pin connected to corresponding EXTI line. |
EricLew | 0:80ee8f3b695e | 532 | * @retval None |
EricLew | 0:80ee8f3b695e | 533 | */ |
EricLew | 0:80ee8f3b695e | 534 | __weak void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin) |
EricLew | 0:80ee8f3b695e | 535 | { |
EricLew | 0:80ee8f3b695e | 536 | /* NOTE: This function should not be modified, when the callback is needed, |
EricLew | 0:80ee8f3b695e | 537 | the HAL_GPIO_EXTI_Callback could be implemented in the user file |
EricLew | 0:80ee8f3b695e | 538 | */ |
EricLew | 0:80ee8f3b695e | 539 | } |
EricLew | 0:80ee8f3b695e | 540 | |
EricLew | 0:80ee8f3b695e | 541 | /** |
EricLew | 0:80ee8f3b695e | 542 | * @} |
EricLew | 0:80ee8f3b695e | 543 | */ |
EricLew | 0:80ee8f3b695e | 544 | |
EricLew | 0:80ee8f3b695e | 545 | |
EricLew | 0:80ee8f3b695e | 546 | /** |
EricLew | 0:80ee8f3b695e | 547 | * @} |
EricLew | 0:80ee8f3b695e | 548 | */ |
EricLew | 0:80ee8f3b695e | 549 | |
EricLew | 0:80ee8f3b695e | 550 | #endif /* HAL_GPIO_MODULE_ENABLED */ |
EricLew | 0:80ee8f3b695e | 551 | /** |
EricLew | 0:80ee8f3b695e | 552 | * @} |
EricLew | 0:80ee8f3b695e | 553 | */ |
EricLew | 0:80ee8f3b695e | 554 | |
EricLew | 0:80ee8f3b695e | 555 | /** |
EricLew | 0:80ee8f3b695e | 556 | * @} |
EricLew | 0:80ee8f3b695e | 557 | */ |
EricLew | 0:80ee8f3b695e | 558 | |
EricLew | 0:80ee8f3b695e | 559 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
EricLew | 0:80ee8f3b695e | 560 |