stm32f3348_discovery.c

00001 /**
00002   ******************************************************************************
00003   * @file    stm32f3348_discovery.c
00004   * @author  MCD Application Team
00005   * @version V1.0.0
00006   * @date    20-June-2014
00007   * @brief   This file provides set of firmware functions to manage Leds, 
00008   *          push-button for STM32F3348 DISCO.
00009   ******************************************************************************
00010   * @attention
00011   *
00012   * <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
00013   *
00014   * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
00015   * You may not use this file except in compliance with the License.
00016   * You may obtain a copy of the License at:
00017   *
00018   *        http://www.st.com/software_license_agreement_liberty_v2
00019   *
00020   * Unless required by applicable law or agreed to in writing, software 
00021   * distributed under the License is distributed on an "AS IS" BASIS, 
00022   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00023   * See the License for the specific language governing permissions and
00024   * limitations under the License.
00025   *
00026   ******************************************************************************
00027   */
00028   
00029 /* Includes ------------------------------------------------------------------*/
00030 #include "stm32f3348_discovery.h"
00031 
00032 /** @addtogroup Utilities
00033   * @{
00034   */ 
00035 
00036 /** @addtogroup STM32F3348_DISCOVERY
00037   * @{
00038   */   
00039     
00040 /** @defgroup STM32F3348_DISCOVERY_LOW_LEVEL 
00041   * @brief This file provides firmware functions to manage Leds and push-button 
00042   *        available on STM32F3348-DISCO board from STMicroelectronics.
00043   * @{
00044   */ 
00045 
00046 
00047 /* Private typedef -----------------------------------------------------------*/
00048 /* Private define ------------------------------------------------------------*/
00049 /* Private macro -------------------------------------------------------------*/
00050 /* Private variables ---------------------------------------------------------*/
00051 
00052 GPIO_TypeDef* GPIO_PORT[LEDn] = {LED3_GPIO_PORT, LED4_GPIO_PORT,
00053                                  LED5_GPIO_PORT, LED6_GPIO_PORT};
00054                                  
00055 const uint16_t GPIO_PIN[LEDn] = {LED3_PIN, LED4_PIN,
00056                                  LED5_PIN, LED6_PIN};
00057                                  
00058 const uint32_t GPIO_CLK[LEDn] = {LED3_GPIO_CLK, LED4_GPIO_CLK,
00059                                  LED5_GPIO_CLK, LED6_GPIO_CLK};
00060 
00061 GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {USER_BUTTON_GPIO_PORT}; 
00062 
00063 const uint16_t BUTTON_PIN[BUTTONn] = {USER_BUTTON_PIN}; 
00064 
00065 const uint32_t BUTTON_CLK[BUTTONn] = {USER_BUTTON_GPIO_CLK};
00066 
00067 const uint16_t BUTTON_EXTI_LINE[BUTTONn] = {USER_BUTTON_EXTI_LINE};
00068 
00069 const uint8_t BUTTON_PORT_SOURCE[BUTTONn] = {USER_BUTTON_EXTI_PORT_SOURCE};
00070                                  
00071 const uint8_t BUTTON_PIN_SOURCE[BUTTONn] = {USER_BUTTON_EXTI_PIN_SOURCE};
00072  
00073 const uint8_t BUTTON_IRQn[BUTTONn] = {USER_BUTTON_EXTI_IRQn};
00074 
00075 
00076 /* Private function prototypes -----------------------------------------------*/
00077 
00078 /**
00079   * @brief  Configures LED GPIO.
00080   * @param  Led: Specifies the Led to be configured. 
00081   *          This parameter can be one of following parameters:
00082   *            @arg LED3
00083   *            @arg LED4
00084   *            @arg LED5
00085   *            @arg LED6
00086   * @retval None
00087   */
00088 void STM_EVAL_LEDInit(Led_TypeDef Led)
00089 {
00090   GPIO_InitTypeDef  GPIO_InitStructure;
00091   
00092   /* Enable the GPIO_LED Clock */
00093   RCC_AHBPeriphClockCmd(GPIO_CLK[Led], ENABLE);
00094 
00095   /* Configure the GPIO_LED pin */
00096   GPIO_InitStructure.GPIO_Pin = GPIO_PIN[Led];
00097   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
00098   GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
00099   GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
00100   GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
00101   GPIO_Init(GPIO_PORT[Led], &GPIO_InitStructure);
00102 }
00103 
00104 /**
00105   * @brief  Turns selected LED On.
00106   * @param  Led: Specifies the Led to be set on. 
00107   *          This parameter can be one of following parameters:
00108   *            @arg LED3
00109   *            @arg LED4
00110   *            @arg LED5
00111   *            @arg LED6  
00112   * @retval None
00113   */
00114 void STM_EVAL_LEDOn(Led_TypeDef Led)
00115 {
00116   GPIO_PORT[Led]->BSRR = GPIO_PIN[Led];
00117 }
00118 
00119 /**
00120   * @brief  Turns selected LED Off.
00121   * @param  Led: Specifies the Led to be set off. 
00122   *          This parameter can be one of following parameters:
00123   *            @arg LED3
00124   *            @arg LED4
00125   *            @arg LED5
00126   *            @arg LED6
00127   * @retval None
00128   */
00129 void STM_EVAL_LEDOff(Led_TypeDef Led)
00130 {
00131   GPIO_PORT[Led]->BRR = GPIO_PIN[Led];
00132 }
00133 
00134 /**
00135   * @brief  Toggles the selected LED.
00136   * @param  Led: Specifies the Led to be toggled. 
00137   *          This parameter can be one of following parameters:
00138   *            @arg LED3
00139   *            @arg LED4
00140   *            @arg LED5
00141   *            @arg LED6
00142   * @retval None
00143   */
00144 void STM_EVAL_LEDToggle(Led_TypeDef Led)
00145 {
00146   GPIO_PORT[Led]->ODR ^= GPIO_PIN[Led];
00147 }
00148 
00149 /**
00150   * @brief  Configures Button GPIO and EXTI Line.
00151   * @param  Button: Specifies the Button to be configured.
00152   *   This parameter should be: BUTTON_USER
00153   * @param  Button_Mode: Specifies Button mode.
00154   *   This parameter can be one of following parameters:   
00155   *     @arg BUTTON_MODE_GPIO: Button will be used as simple IO 
00156   *     @arg BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt
00157   *                            generation capability  
00158   * @retval None
00159   */
00160 void STM_EVAL_PBInit(Button_TypeDef Button, ButtonMode_TypeDef Button_Mode)
00161 {
00162   GPIO_InitTypeDef GPIO_InitStructure;
00163   EXTI_InitTypeDef EXTI_InitStructure;
00164   NVIC_InitTypeDef NVIC_InitStructure;
00165 
00166   /* Enable the BUTTON Clock */
00167   RCC_AHBPeriphClockCmd(BUTTON_CLK[Button], ENABLE);
00168   RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
00169 
00170   /* Configure Button pin as input */
00171   GPIO_InitStructure.GPIO_Pin = BUTTON_PIN[Button];  
00172   GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
00173   GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;  
00174 
00175   GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStructure);
00176 
00177   if (Button_Mode == BUTTON_MODE_EXTI)
00178   {
00179     /* Connect Button EXTI Line to Button GPIO Pin */
00180     SYSCFG_EXTILineConfig(BUTTON_PORT_SOURCE[Button], BUTTON_PIN_SOURCE[Button]);
00181 
00182     /* Configure Button EXTI line */
00183     EXTI_InitStructure.EXTI_Line = BUTTON_EXTI_LINE[Button];
00184     EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
00185     EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;  
00186     EXTI_InitStructure.EXTI_LineCmd = ENABLE;
00187     EXTI_Init(&EXTI_InitStructure);
00188 
00189     /* Enable and set Button EXTI Interrupt to the lowest priority */
00190     NVIC_InitStructure.NVIC_IRQChannel = BUTTON_IRQn[Button];
00191     NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
00192     NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
00193     NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
00194 
00195     NVIC_Init(&NVIC_InitStructure); 
00196   
00197   }
00198 }
00199 
00200 /**
00201   * @brief  Returns the selected Button state.
00202   * @param  Button: Specifies the Button to be checked.
00203   *   This parameter should be: BUTTON_USER  
00204   * @retval The Button GPIO pin value.
00205   */
00206 uint32_t STM_EVAL_PBGetState(Button_TypeDef Button)
00207 {
00208   return GPIO_ReadInputDataBit(BUTTON_PORT[Button], BUTTON_PIN[Button]);
00209 }
00210 
00211 /**
00212   * @}
00213   */ 
00214 
00215 /**
00216   * @}
00217   */
00218 
00219 /**
00220   * @}
00221   */
00222 
00223 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/