diff --git a/stm32l100c_discovery.c b/stm32l100c_discovery.c new file mode 100644 --- /dev/null +++ b/stm32l100c_discovery.c @@ -0,0 +1,257 @@ +/** + ****************************************************************************** + * @file stm32l100c_discovery.c + * @author MCD Application Team + * @version V1.0.0 + * @date 29-July-2013 + * @brief This file provides set of firmware functions to manage Leds and + * push-button available on STM32L100C-Discovery Kit from STMicroelectronics. + ****************************************************************************** + * @attention + * + *

© COPYRIGHT 2013 STMicroelectronics

+ * + * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); + * You may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.st.com/software_license_agreement_liberty_v2 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32l100c_discovery.h" + +/** @addtogroup Utilities + * @{ + */ + +/** @addtogroup STM32L100C_DISCOVERY + * @{ + */ + +/** @defgroup STM32L100C_DISCOVERY_LOW_LEVEL + * @brief This file provides firmware functions to manage Leds and push-buttons, + * available on STM32L100C_DISCOVERY evaluation board from STMicroelectronics. + * @{ + */ + +/** @defgroup STM32L100C_DISCOVERY_LOW_LEVEL_Private_TypesDefinitions + * @{ + */ +/** + * @} + */ + + +/** @defgroup STM32L100C_DISCOVERY_LOW_LEVEL_Private_Defines + * @{ + */ +/** + * @} + */ + + +/** @defgroup STM32L100C_DISCOVERY_LOW_LEVEL_Private_Macros + * @{ + */ +/** + * @} + */ + + +/** @defgroup STM32L100C_DISCOVERY_LOW_LEVEL_Private_Variables + * @{ + */ +GPIO_TypeDef* GPIO_PORT[LEDn] = {LED3_GPIO_PORT, LED4_GPIO_PORT}; +const uint16_t GPIO_PIN[LEDn] = {LED3_PIN, LED4_PIN}; +const uint32_t GPIO_CLK[LEDn] = {LED3_GPIO_CLK, LED4_GPIO_CLK}; + +GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {USER_BUTTON_GPIO_PORT}; + +const uint16_t BUTTON_PIN[BUTTONn] = {USER_BUTTON_PIN}; + +const uint32_t BUTTON_CLK[BUTTONn] = {USER_BUTTON_GPIO_CLK}; + +const uint16_t BUTTON_EXTI_LINE[BUTTONn] = {USER_BUTTON_EXTI_LINE}; + +const uint16_t BUTTON_PORT_SOURCE[BUTTONn] = {USER_BUTTON_EXTI_PORT_SOURCE}; + +const uint16_t BUTTON_PIN_SOURCE[BUTTONn] = {USER_BUTTON_EXTI_PIN_SOURCE}; + +const uint16_t BUTTON_IRQn[BUTTONn] = {USER_BUTTON_EXTI_IRQn}; + +/** + * @} + */ + + +/** @defgroup STM32L100C_DISCOVERY_LOW_LEVEL_Private_FunctionPrototypes + * @{ + */ + +/** + * @} + */ + +/** @defgroup STM32L100C_DISCOVERY_LOW_LEVEL_Private_Functions + * @{ + */ + +/** + * @brief Configures LED GPIO. + * @param Led: Specifies the Led to be configured. + * This parameter can be one of following parameters: + * @arg LED3 + * @arg LED4 + * @retval None + */ +void STM_EVAL_LEDInit(Led_TypeDef Led) +{ + GPIO_InitTypeDef GPIO_InitStructure; + + /* Enable the GPIO_LED Clock */ + RCC_AHBPeriphClockCmd(GPIO_CLK[Led], ENABLE); + + /* Configure the GPIO_LED pin */ + GPIO_InitStructure.GPIO_Pin = GPIO_PIN[Led]; + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; + GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; + GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; + GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz; + GPIO_Init(GPIO_PORT[Led], &GPIO_InitStructure); +} + +/** + * @brief Turns selected LED On. + * @param Led: Specifies the Led to be set on. + * This parameter can be one of following parameters: + * @arg LED3 + * @arg LED4 + * @retval None + */ +void STM_EVAL_LEDOn(Led_TypeDef Led) +{ + GPIO_PORT[Led]->BSRRL = GPIO_PIN[Led]; +} + +/** + * @brief Turns selected LED Off. + * @param Led: Specifies the Led to be set off. + * This parameter can be one of following parameters: + * @arg LED3 + * @arg LED4 + * @retval None + */ +void STM_EVAL_LEDOff(Led_TypeDef Led) +{ + GPIO_PORT[Led]->BSRRH = GPIO_PIN[Led]; +} + +/** + * @brief Toggles the selected LED. + * @param Led: Specifies the Led to be toggled. + * This parameter can be one of following parameters: + * @arg LED3 + * @arg LED4 + * @retval None + */ +void STM_EVAL_LEDToggle(Led_TypeDef Led) +{ + GPIO_PORT[Led]->ODR ^= GPIO_PIN[Led]; +} + +/** + * @brief Configures Button GPIO and EXTI Line. + * @param Button: Specifies the Button to be configured. + * This parameter can be: + * @arg BUTTON_USER: User Push Button + * @param Button_Mode: Specifies Button mode. + * This parameter can be one of following parameters: + * @arg BUTTON_MODE_GPIO: Button will be used as simple IO + * @arg BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt + * generation capability + * @retval None + */ +void STM_EVAL_PBInit(Button_TypeDef Button, ButtonMode_TypeDef Button_Mode) +{ + GPIO_InitTypeDef GPIO_InitStructure; + EXTI_InitTypeDef EXTI_InitStructure; + NVIC_InitTypeDef NVIC_InitStructure; + + /* Enable the BUTTON Clock */ + RCC_AHBPeriphClockCmd(BUTTON_CLK[Button], ENABLE); + RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE); + + /* Configure Button pin as input */ + GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN; + GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; + GPIO_InitStructure.GPIO_Pin = BUTTON_PIN[Button]; + GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStructure); + + if (Button_Mode == BUTTON_MODE_EXTI) + { + /* Connect Button EXTI Line to Button GPIO Pin */ + SYSCFG_EXTILineConfig(BUTTON_PORT_SOURCE[Button], BUTTON_PIN_SOURCE[Button]); + + /* Configure Button EXTI line */ + EXTI_InitStructure.EXTI_Line = BUTTON_EXTI_LINE[Button]; + EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; + if (Button != BUTTON_USER) + { + EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; + } + else + { + EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; + } + EXTI_InitStructure.EXTI_LineCmd = ENABLE; + EXTI_Init(&EXTI_InitStructure); + + /* Enable and set Button EXTI Interrupt to the lowest priority */ + NVIC_InitStructure.NVIC_IRQChannel = BUTTON_IRQn[Button]; + NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F; + NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F; + NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; + + NVIC_Init(&NVIC_InitStructure); + } +} + +/** + * @brief Returns the selected Button state. + * @param Button: Specifies the Button to be checked. + * This parameter can be one of following parameters: + * @arg BUTTON_USER: User Push Button + * @retval The Button GPIO pin value. + */ +uint32_t STM_EVAL_PBGetState(Button_TypeDef Button) +{ + /* There is no Wakeup button on STM32f0-Discovery Kit */ + return GPIO_ReadInputDataBit(BUTTON_PORT[Button], BUTTON_PIN[Button]); +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/