/**
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******************************************************************************
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* @file stm32l152_eval.c
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* @author MCD Application Team
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* @version V4.5.0
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* @date 07-March-2011
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* @brief This file provides:
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* - set of firmware functions to manage Leds, push-button and COM ports
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* - low level initialization functions for SD card (on SPI) and
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* temperature sensor (LM75) available on STM32L152-EVAL
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* evaluation board RevB from STMicroelectronics.
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******************************************************************************
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* @attention
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*
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* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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*
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* <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2>
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32l152_eval.h"
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#include "stm32l1xx_spi.h"
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#include "stm32l1xx_i2c.h"
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/** @addtogroup Utilities
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* @{
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*/
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/** @addtogroup STM32_EVAL
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* @{
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*/
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/** @addtogroup STM32L152_EVAL
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* @{
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*/
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/** @defgroup STM32L152_EVAL_LOW_LEVEL
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* @brief This file provides firmware functions to manage Leds, push-buttons,
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* COM ports, SD card on SPI and temperature sensor (LM75) available on
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* STM32L152-EVAL evaluation board from STMicroelectronics.
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* @{
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*/
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/** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_TypesDefinitions
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* @{
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*/
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/**
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* @}
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*/
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|
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/** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_Defines
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* @{
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*/
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/**
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* @}
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*/
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|
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/** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_Macros
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* @{
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*/
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/**
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* @}
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*/
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|
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/** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_Variables
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* @{
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*/
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GPIO_TypeDef* GPIO_PORT[LEDn] = {LED1_GPIO_PORT, LED2_GPIO_PORT, LED3_GPIO_PORT,
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LED4_GPIO_PORT};
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const uint16_t GPIO_PIN[LEDn] = {LED1_PIN, LED2_PIN, LED3_PIN,
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LED4_PIN};
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const uint32_t GPIO_CLK[LEDn] = {LED1_GPIO_CLK, LED2_GPIO_CLK, LED3_GPIO_CLK,
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LED4_GPIO_CLK};
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GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {KEY_BUTTON_GPIO_PORT, RIGHT_BUTTON_GPIO_PORT,
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LEFT_BUTTON_GPIO_PORT, UP_BUTTON_GPIO_PORT,
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DOWN_BUTTON_GPIO_PORT, SEL_BUTTON_GPIO_PORT};
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const uint16_t BUTTON_PIN[BUTTONn] = {KEY_BUTTON_PIN, RIGHT_BUTTON_PIN,
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LEFT_BUTTON_PIN, UP_BUTTON_PIN,
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DOWN_BUTTON_PIN, SEL_BUTTON_PIN};
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const uint32_t BUTTON_CLK[BUTTONn] = {KEY_BUTTON_GPIO_CLK, RIGHT_BUTTON_GPIO_CLK,
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LEFT_BUTTON_GPIO_CLK, UP_BUTTON_GPIO_CLK,
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DOWN_BUTTON_GPIO_CLK, SEL_BUTTON_GPIO_CLK};
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const uint16_t BUTTON_EXTI_LINE[BUTTONn] = {KEY_BUTTON_EXTI_LINE,
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RIGHT_BUTTON_EXTI_LINE,
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LEFT_BUTTON_EXTI_LINE,
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UP_BUTTON_EXTI_LINE,
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DOWN_BUTTON_EXTI_LINE,
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SEL_BUTTON_EXTI_LINE};
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const uint16_t BUTTON_PORT_SOURCE[BUTTONn] = {KEY_BUTTON_EXTI_PORT_SOURCE,
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RIGHT_BUTTON_EXTI_PORT_SOURCE,
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LEFT_BUTTON_EXTI_PORT_SOURCE,
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UP_BUTTON_EXTI_PORT_SOURCE,
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DOWN_BUTTON_EXTI_PORT_SOURCE,
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SEL_BUTTON_EXTI_PORT_SOURCE};
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const uint16_t BUTTON_PIN_SOURCE[BUTTONn] = {KEY_BUTTON_EXTI_PIN_SOURCE,
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RIGHT_BUTTON_EXTI_PIN_SOURCE,
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LEFT_BUTTON_EXTI_PIN_SOURCE,
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UP_BUTTON_EXTI_PIN_SOURCE,
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DOWN_BUTTON_EXTI_PIN_SOURCE,
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SEL_BUTTON_EXTI_PIN_SOURCE};
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const uint16_t BUTTON_IRQn[BUTTONn] = {KEY_BUTTON_EXTI_IRQn, RIGHT_BUTTON_EXTI_IRQn,
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LEFT_BUTTON_EXTI_IRQn, UP_BUTTON_EXTI_IRQn,
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DOWN_BUTTON_EXTI_IRQn, SEL_BUTTON_EXTI_IRQn};
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USART_TypeDef* COM_USART[COMn] = {EVAL_COM1, EVAL_COM2};
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GPIO_TypeDef* COM_TX_PORT[COMn] = {EVAL_COM1_TX_GPIO_PORT, EVAL_COM2_TX_GPIO_PORT};
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GPIO_TypeDef* COM_RX_PORT[COMn] = {EVAL_COM1_RX_GPIO_PORT, EVAL_COM2_RX_GPIO_PORT};
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const uint32_t COM_USART_CLK[COMn] = {EVAL_COM1_CLK, EVAL_COM2_CLK};
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const uint32_t COM_TX_PORT_CLK[COMn] = {EVAL_COM1_TX_GPIO_CLK, EVAL_COM2_TX_GPIO_CLK};
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const uint32_t COM_RX_PORT_CLK[COMn] = {EVAL_COM1_RX_GPIO_CLK, EVAL_COM2_RX_GPIO_CLK};
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const uint16_t COM_TX_PIN[COMn] = {EVAL_COM1_TX_PIN, EVAL_COM2_TX_PIN};
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const uint16_t COM_RX_PIN[COMn] = {EVAL_COM1_RX_PIN, EVAL_COM2_RX_PIN};
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const uint16_t COM_TX_PIN_SOURCE[COMn] = {EVAL_COM1_TX_SOURCE, EVAL_COM2_TX_SOURCE};
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const uint16_t COM_RX_PIN_SOURCE[COMn] = {EVAL_COM1_RX_SOURCE, EVAL_COM2_RX_SOURCE};
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const uint16_t COM_TX_AF[COMn] = {EVAL_COM1_TX_AF, EVAL_COM2_TX_AF};
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const uint16_t COM_RX_AF[COMn] = {EVAL_COM1_RX_AF, EVAL_COM2_RX_AF};
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DMA_InitTypeDef sEEDMA_InitStructure;
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/**
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* @}
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*/
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|
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/** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_FunctionPrototypes
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup STM32L152_EVAL_LOW_LEVEL_Private_Functions
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* @{
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*/
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/**
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* @brief Configures LED GPIO.
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* @param Led: Specifies the Led to be configured.
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* This parameter can be one of following parameters:
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* @arg LED1
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* @arg LED2
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* @arg LED3
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* @arg LED4
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* @retval None
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*/
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void STM_EVAL_LEDInit(Led_TypeDef Led)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Enable the GPIO_LED Clock */
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RCC_AHBPeriphClockCmd(GPIO_CLK[Led], ENABLE);
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/* Configure the GPIO_LED pin */
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GPIO_InitStructure.GPIO_Pin = GPIO_PIN[Led];
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
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GPIO_Init(GPIO_PORT[Led], &GPIO_InitStructure);
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GPIO_PORT[Led]->BSRRL = GPIO_PIN[Led];
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}
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/**
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* @brief Turns selected LED On.
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* @param Led: Specifies the Led to be set on.
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* This parameter can be one of following parameters:
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* @arg LED1
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* @arg LED2
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* @arg LED3
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* @arg LED4
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* @retval None
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*/
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void STM_EVAL_LEDOn(Led_TypeDef Led)
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{
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GPIO_PORT[Led]->BSRRH = GPIO_PIN[Led];
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}
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/**
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* @brief Turns selected LED Off.
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* @param Led: Specifies the Led to be set off.
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* This parameter can be one of following parameters:
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* @arg LED1
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* @arg LED2
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* @arg LED3
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* @arg LED4
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* @retval None
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*/
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void STM_EVAL_LEDOff(Led_TypeDef Led)
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{
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GPIO_PORT[Led]->BSRRL = GPIO_PIN[Led];
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}
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/**
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* @brief Toggles the selected LED.
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* @param Led: Specifies the Led to be toggled.
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* This parameter can be one of following parameters:
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* @arg LED1
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* @arg LED2
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* @arg LED3
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* @arg LED4
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* @retval None
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*/
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void STM_EVAL_LEDToggle(Led_TypeDef Led)
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{
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GPIO_PORT[Led]->ODR ^= GPIO_PIN[Led];
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}
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/**
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* @brief Configures Button GPIO and EXTI Line.
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* @param Button: Specifies the Button to be configured.
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* This parameter can be one of following parameters:
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* @arg BUTTON_KEY: Key Push Button
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* @arg BUTTON_RIGHT: Joystick Right Push Button
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* @arg BUTTON_LEFT: Joystick Left Push Button
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* @arg BUTTON_UP: Joystick Up Push Button
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* @arg BUTTON_DOWN: Joystick Down Push Button
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* @arg BUTTON_SEL: Joystick Sel Push Button
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* @param Button_Mode: Specifies Button mode.
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* This parameter can be one of following parameters:
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* @arg BUTTON_MODE_GPIO: Button will be used as simple IO
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* @arg BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt
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* generation capability
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* @retval None
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*/
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void STM_EVAL_PBInit(Button_TypeDef Button, ButtonMode_TypeDef Button_Mode)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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EXTI_InitTypeDef EXTI_InitStructure;
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NVIC_InitTypeDef NVIC_InitStructure;
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/* There is no Wakeup and Tamper buttons on STM32L152-EVAL, the Button value should
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be greater than 1. */
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if(Button > 1)
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{
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Button = (Button_TypeDef) (Button - 2);
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/* Enable the BUTTON Clock */
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RCC_AHBPeriphClockCmd(BUTTON_CLK[Button], ENABLE);
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
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/* Configure Button pin as input */
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_InitStructure.GPIO_Pin = BUTTON_PIN[Button];
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GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStructure);
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if (Button_Mode == BUTTON_MODE_EXTI)
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{
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/* Connect Button EXTI Line to Button GPIO Pin */
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SYSCFG_EXTILineConfig(BUTTON_PORT_SOURCE[Button], BUTTON_PIN_SOURCE[Button]);
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/* Configure Button EXTI line */
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EXTI_InitStructure.EXTI_Line = BUTTON_EXTI_LINE[Button];
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EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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if(Button != BUTTON_KEY)
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{
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EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
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}
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else
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{
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EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
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}
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EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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EXTI_Init(&EXTI_InitStructure);
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/* Enable and set Button EXTI Interrupt to the lowest priority */
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NVIC_InitStructure.NVIC_IRQChannel = BUTTON_IRQn[Button];
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0F;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0F;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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}
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}
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/**
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* @brief Returns the selected Button state.
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* @param Button: Specifies the Button to be checked.
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* This parameter can be one of following parameters:
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* @arg BUTTON_KEY: Key Push Button
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* @arg BUTTON_RIGHT: Joystick Right Push Button
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* @arg BUTTON_LEFT: Joystick Left Push Button
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* @arg BUTTON_UP: Joystick Up Push Button
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* @arg BUTTON_DOWN: Joystick Down Push Button
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* @arg BUTTON_SEL: Joystick Sel Push Button
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* @retval - When Button > 1, the Button GPIO pin value is returned.
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* - When Button = 0 or 1, error code (0xFF) is returned.
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*/
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uint32_t STM_EVAL_PBGetState(Button_TypeDef Button)
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{
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/* There is no Wakeup and Tamper pins on STM32L152-EVAL, the Button value should
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be greater than 1. */
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if(Button > 1)
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{
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Button = (Button_TypeDef) (Button - 2);
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return GPIO_ReadInputDataBit(BUTTON_PORT[Button], BUTTON_PIN[Button]);
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}
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else
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{
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return 0xFF; /* Error Code */
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}
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}
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/**
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* @brief Configures COM port.
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* @param COM: Specifies the COM port to be configured.
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* This parameter can be one of following parameters:
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* @arg COM1
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* @arg COM2
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* @param USART_InitStruct: pointer to a USART_InitTypeDef structure that
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* contains the configuration information for the specified USART peripheral.
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* @retval None
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*/
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void STM_EVAL_COMInit(COM_TypeDef COM, USART_InitTypeDef* USART_InitStruct)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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/* Enable GPIO clock */
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RCC_AHBPeriphClockCmd(COM_TX_PORT_CLK[COM] | COM_RX_PORT_CLK[COM], ENABLE);
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/* Enable UART clock */
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RCC_APB1PeriphClockCmd(COM_USART_CLK[COM], ENABLE);
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/* Connect PXx to USARTx_Tx */
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GPIO_PinAFConfig(COM_TX_PORT[COM], COM_TX_PIN_SOURCE[COM], COM_TX_AF[COM]);
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/* Connect PXx to USARTx_Rx */
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GPIO_PinAFConfig(COM_RX_PORT[COM], COM_RX_PIN_SOURCE[COM], COM_RX_AF[COM]);
|
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/* Configure USART Tx as alternate function push-pull */
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GPIO_InitStructure.GPIO_Pin = COM_TX_PIN[COM];
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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GPIO_Init(COM_TX_PORT[COM], &GPIO_InitStructure);
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/* Configure USART Rx as alternate function push-pull */
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GPIO_InitStructure.GPIO_Pin = COM_RX_PIN[COM];
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GPIO_Init(COM_RX_PORT[COM], &GPIO_InitStructure);
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/* USART configuration */
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USART_Init(COM_USART[COM], USART_InitStruct);
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/* Enable USART */
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USART_Cmd(COM_USART[COM], ENABLE);
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}
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/**
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* @brief DeInitializes the SPI interface.
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* @param None
|
* @retval None
|
*/
|
void SD_LowLevel_DeInit(void)
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{
|
GPIO_InitTypeDef GPIO_InitStructure;
|
|
SPI_Cmd(SD_SPI, DISABLE); /*!< SD_SPI disable */
|
SPI_DeInit(SD_SPI); /*!< DeInitializes the SD_SPI */
|
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/*!< SD_SPI Periph clock disable */
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RCC_APB1PeriphClockCmd(SD_SPI_CLK, DISABLE);
|
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/*!< Configure SD_SPI pins: SCK */
|
GPIO_InitStructure.GPIO_Pin = SD_SPI_SCK_PIN;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_Init(SD_SPI_SCK_GPIO_PORT, &GPIO_InitStructure);
|
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/*!< Configure SD_SPI pins: MISO */
|
GPIO_InitStructure.GPIO_Pin = SD_SPI_MISO_PIN;
|
GPIO_Init(SD_SPI_MISO_GPIO_PORT, &GPIO_InitStructure);
|
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/*!< Configure SD_SPI pins: MOSI */
|
GPIO_InitStructure.GPIO_Pin = SD_SPI_MOSI_PIN;
|
GPIO_Init(SD_SPI_MOSI_GPIO_PORT, &GPIO_InitStructure);
|
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/*!< Configure SD_SPI_CS_PIN pin: SD Card CS pin */
|
GPIO_InitStructure.GPIO_Pin = SD_CS_PIN;
|
GPIO_Init(SD_CS_GPIO_PORT, &GPIO_InitStructure);
|
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/*!< Configure SD_SPI_DETECT_PIN pin: SD Card detect pin */
|
GPIO_InitStructure.GPIO_Pin = SD_DETECT_PIN;
|
GPIO_Init(SD_DETECT_GPIO_PORT, &GPIO_InitStructure);
|
}
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|
/**
|
* @brief Initializes the SD Card and put it into StandBy State (Ready for
|
* data transfer).
|
* @param None
|
* @retval None
|
*/
|
void SD_LowLevel_Init(void)
|
{
|
GPIO_InitTypeDef GPIO_InitStructure;
|
SPI_InitTypeDef SPI_InitStructure;
|
|
/*!< SD_SPI_CS_GPIO, SD_SPI_MOSI_GPIO, SD_SPI_MISO_GPIO, SD_SPI_DETECT_GPIO
|
and SD_SPI_SCK_GPIO Periph clock enable */
|
RCC_AHBPeriphClockCmd(SD_CS_GPIO_CLK | SD_SPI_MOSI_GPIO_CLK | SD_SPI_MISO_GPIO_CLK |
|
SD_SPI_SCK_GPIO_CLK | SD_DETECT_GPIO_CLK, ENABLE);
|
|
/*!< SD_SPI Periph clock enable */
|
RCC_APB1PeriphClockCmd(SD_SPI_CLK, ENABLE);
|
|
/*!< Configure SD_SPI pins: SCK */
|
GPIO_InitStructure.GPIO_Pin = SD_SPI_SCK_PIN;
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
|
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
|
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
|
GPIO_Init(SD_SPI_SCK_GPIO_PORT, &GPIO_InitStructure);
|
|
/*!< Configure SD_SPI pins: MISO */
|
GPIO_InitStructure.GPIO_Pin = SD_SPI_MISO_PIN;
|
GPIO_Init(SD_SPI_MISO_GPIO_PORT, &GPIO_InitStructure);
|
|
/*!< Configure SD_SPI pins: MOSI */
|
GPIO_InitStructure.GPIO_Pin = SD_SPI_MOSI_PIN;
|
GPIO_Init(SD_SPI_MOSI_GPIO_PORT, &GPIO_InitStructure);
|
|
/*!< Configure SD_SPI_CS_PIN pin: SD Card CS pin */
|
GPIO_InitStructure.GPIO_Pin = SD_CS_PIN;
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
|
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
|
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
|
GPIO_Init(SD_CS_GPIO_PORT, &GPIO_InitStructure);
|
|
/*!< Configure SD_SPI_DETECT_PIN pin: SD Card detect pin */
|
GPIO_InitStructure.GPIO_Pin = SD_DETECT_PIN;
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
|
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
|
GPIO_Init(SD_DETECT_GPIO_PORT, &GPIO_InitStructure);
|
|
/* Connect PXx to SD_SPI_SCK */
|
GPIO_PinAFConfig(SD_SPI_SCK_GPIO_PORT, SD_SPI_SCK_SOURCE, SD_SPI_SCK_AF);
|
|
/* Connect PXx to SD_SPI_MISO */
|
GPIO_PinAFConfig(SD_SPI_MISO_GPIO_PORT, SD_SPI_MISO_SOURCE, SD_SPI_MISO_AF);
|
|
/* Connect PXx to SD_SPI_MOSI */
|
GPIO_PinAFConfig(SD_SPI_MOSI_GPIO_PORT, SD_SPI_MOSI_SOURCE, SD_SPI_MOSI_AF);
|
|
/*!< SD_SPI Config */
|
SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
|
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
|
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
|
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
|
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
|
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
|
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
|
|
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
|
SPI_InitStructure.SPI_CRCPolynomial = 7;
|
SPI_Init(SD_SPI, &SPI_InitStructure);
|
|
SPI_Cmd(SD_SPI, ENABLE); /*!< SD_SPI enable */
|
}
|
|
/**
|
* @brief DeInitializes the LM75_I2C.
|
* @param None
|
* @retval None
|
*/
|
void LM75_LowLevel_DeInit(void)
|
{
|
GPIO_InitTypeDef GPIO_InitStructure;
|
|
/*!< Disable LM75_I2C */
|
I2C_Cmd(LM75_I2C, DISABLE);
|
|
/*!< DeInitializes the LM75_I2C */
|
I2C_DeInit(LM75_I2C);
|
|
/*!< LM75_I2C Periph clock disable */
|
RCC_APB1PeriphClockCmd(LM75_I2C_CLK, DISABLE);
|
|
/*!< Configure LM75_I2C pins: SCL */
|
GPIO_InitStructure.GPIO_Pin = LM75_I2C_SCL_PIN;
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
|
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
|
GPIO_Init(LM75_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
|
|
/*!< Configure LM75_I2C pins: SDA */
|
GPIO_InitStructure.GPIO_Pin = LM75_I2C_SDA_PIN;
|
GPIO_Init(LM75_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);
|
|
/*!< Configure LM75_I2C pin: SMBUS ALERT */
|
GPIO_InitStructure.GPIO_Pin = LM75_I2C_SMBUSALERT_PIN;
|
GPIO_Init(LM75_I2C_SMBUSALERT_GPIO_PORT, &GPIO_InitStructure);
|
}
|
|
/**
|
* @brief Initializes the LM75_I2C.
|
* @param None
|
* @retval None
|
*/
|
void LM75_LowLevel_Init(void)
|
{
|
GPIO_InitTypeDef GPIO_InitStructure;
|
|
/*!< LM75_I2C Periph clock enable */
|
RCC_APB1PeriphClockCmd(LM75_I2C_CLK, ENABLE);
|
|
/*!< LM75_I2C_SCL_GPIO_CLK, LM75_I2C_SDA_GPIO_CLK
|
and LM75_I2C_SMBUSALERT_GPIO_CLK Periph clock enable */
|
RCC_AHBPeriphClockCmd(LM75_I2C_SCL_GPIO_CLK | LM75_I2C_SDA_GPIO_CLK |
|
LM75_I2C_SMBUSALERT_GPIO_CLK, ENABLE);
|
|
/*!< Configure LM75_I2C pins: SCL */
|
GPIO_InitStructure.GPIO_Pin = LM75_I2C_SCL_PIN;
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
|
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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GPIO_Init(LM75_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
|
|
/*!< Configure LM75_I2C pins: SDA */
|
GPIO_InitStructure.GPIO_Pin = LM75_I2C_SDA_PIN;
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GPIO_Init(LM75_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);
|
|
/*!< Configure LM75_I2C pin: SMBUS ALERT */
|
GPIO_InitStructure.GPIO_Pin = LM75_I2C_SMBUSALERT_PIN;
|
GPIO_Init(LM75_I2C_SMBUSALERT_GPIO_PORT, &GPIO_InitStructure);
|
|
|
/* Connect PXx to I2C_SCL */
|
GPIO_PinAFConfig(LM75_I2C_SCL_GPIO_PORT, LM75_I2C_SCL_SOURCE, LM75_I2C_SCL_AF);
|
|
/* Connect PXx to I2C_SDA */
|
GPIO_PinAFConfig(LM75_I2C_SDA_GPIO_PORT, LM75_I2C_SDA_SOURCE, LM75_I2C_SDA_AF);
|
|
/* Connect PXx to I2C_SMBUSALER */
|
GPIO_PinAFConfig(LM75_I2C_SMBUSALERT_GPIO_PORT, LM75_I2C_SMBUSALERT_SOURCE, LM75_I2C_SMBUSALERT_AF);
|
}
|
|
/**
|
* @brief DeInitializes peripherals used by the I2C EEPROM driver.
|
* @param None
|
* @retval None
|
*/
|
void sEE_LowLevel_DeInit(void)
|
{
|
GPIO_InitTypeDef GPIO_InitStructure;
|
NVIC_InitTypeDef NVIC_InitStructure;
|
|
/* sEE_I2C Peripheral Disable */
|
I2C_Cmd(sEE_I2C, DISABLE);
|
|
/* sEE_I2C DeInit */
|
I2C_DeInit(sEE_I2C);
|
|
/*!< sEE_I2C Periph clock disable */
|
RCC_APB1PeriphClockCmd(sEE_I2C_CLK, DISABLE);
|
|
/*!< GPIO configuration */
|
/*!< Configure sEE_I2C pins: SCL */
|
GPIO_InitStructure.GPIO_Pin = sEE_I2C_SCL_PIN;
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
|
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
|
GPIO_Init(sEE_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
|
|
/*!< Configure sEE_I2C pins: SDA */
|
GPIO_InitStructure.GPIO_Pin = sEE_I2C_SDA_PIN;
|
GPIO_Init(sEE_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);
|
|
/* Configure and enable I2C DMA TX Channel interrupt */
|
NVIC_InitStructure.NVIC_IRQChannel = sEE_I2C_DMA_TX_IRQn;
|
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = sEE_I2C_DMA_PREPRIO;
|
NVIC_InitStructure.NVIC_IRQChannelSubPriority = sEE_I2C_DMA_SUBPRIO;
|
NVIC_InitStructure.NVIC_IRQChannelCmd = DISABLE;
|
NVIC_Init(&NVIC_InitStructure);
|
|
/* Configure and enable I2C DMA RX Channel interrupt */
|
NVIC_InitStructure.NVIC_IRQChannel = sEE_I2C_DMA_RX_IRQn;
|
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = sEE_I2C_DMA_PREPRIO;
|
NVIC_InitStructure.NVIC_IRQChannelSubPriority = sEE_I2C_DMA_SUBPRIO;
|
NVIC_Init(&NVIC_InitStructure);
|
|
/* Disable and Deinitialize the DMA channels */
|
DMA_Cmd(sEE_I2C_DMA_CHANNEL_TX, DISABLE);
|
DMA_Cmd(sEE_I2C_DMA_CHANNEL_RX, DISABLE);
|
DMA_DeInit(sEE_I2C_DMA_CHANNEL_TX);
|
DMA_DeInit(sEE_I2C_DMA_CHANNEL_RX);
|
}
|
|
/**
|
* @brief Initializes peripherals used by the I2C EEPROM driver.
|
* @param None
|
* @retval None
|
*/
|
void sEE_LowLevel_Init(void)
|
{
|
GPIO_InitTypeDef GPIO_InitStructure;
|
NVIC_InitTypeDef NVIC_InitStructure;
|
|
/*!< sEE_I2C Periph clock enable */
|
RCC_APB1PeriphClockCmd(sEE_I2C_CLK, ENABLE);
|
|
/*!< sEE_I2C_SCL_GPIO_CLK and sEE_I2C_SDA_GPIO_CLK Periph clock enable */
|
RCC_AHBPeriphClockCmd(sEE_I2C_SCL_GPIO_CLK | sEE_I2C_SDA_GPIO_CLK, ENABLE);
|
|
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
|
|
/* Reset sEE_I2C peripheral */
|
RCC_APB1PeriphResetCmd(sEE_I2C_CLK, ENABLE);
|
|
/* Release reset signal of sEE_I2C IP */
|
RCC_APB1PeriphResetCmd(sEE_I2C_CLK, DISABLE);
|
|
/*!< GPIO configuration */
|
/*!< Configure sEE_I2C pins: SCL */
|
GPIO_InitStructure.GPIO_Pin = sEE_I2C_SCL_PIN;
|
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
|
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
|
GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
|
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
|
GPIO_Init(sEE_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
|
|
/*!< Configure sEE_I2C pins: SDA */
|
GPIO_InitStructure.GPIO_Pin = sEE_I2C_SDA_PIN;
|
GPIO_Init(sEE_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);
|
|
/* Connect PXx to I2C_SCL*/
|
GPIO_PinAFConfig(sEE_I2C_SCL_GPIO_PORT, sEE_I2C_SCL_SOURCE, sEE_I2C_SCL_AF);
|
|
/* Connect PXx to I2C_SDA*/
|
GPIO_PinAFConfig(sEE_I2C_SDA_GPIO_PORT, sEE_I2C_SDA_SOURCE, sEE_I2C_SDA_AF);
|
|
/* Configure and enable I2C DMA TX Channel interrupt */
|
NVIC_InitStructure.NVIC_IRQChannel = sEE_I2C_DMA_TX_IRQn;
|
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = sEE_I2C_DMA_PREPRIO;
|
NVIC_InitStructure.NVIC_IRQChannelSubPriority = sEE_I2C_DMA_SUBPRIO;
|
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
|
NVIC_Init(&NVIC_InitStructure);
|
|
/* Configure and enable I2C DMA RX Channel interrupt */
|
NVIC_InitStructure.NVIC_IRQChannel = sEE_I2C_DMA_RX_IRQn;
|
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = sEE_I2C_DMA_PREPRIO;
|
NVIC_InitStructure.NVIC_IRQChannelSubPriority = sEE_I2C_DMA_SUBPRIO;
|
NVIC_Init(&NVIC_InitStructure);
|
|
/*!< I2C DMA TX and RX channels configuration */
|
/* Enable the DMA clock */
|
RCC_AHBPeriphClockCmd(sEE_I2C_DMA_CLK, ENABLE);
|
|
/* I2C TX DMA Channel configuration */
|
DMA_DeInit(sEE_I2C_DMA_CHANNEL_TX);
|
sEEDMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)sEE_I2C_DR_Address;
|
sEEDMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)0; /* This parameter will be configured durig communication */
|
sEEDMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST; /* This parameter will be configured durig communication */
|
sEEDMA_InitStructure.DMA_BufferSize = 0xFFFF; /* This parameter will be configured durig communication */
|
sEEDMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
|
sEEDMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
|
sEEDMA_InitStructure.DMA_PeripheralDataSize = DMA_MemoryDataSize_Byte;
|
sEEDMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
|
sEEDMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
|
sEEDMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;
|
sEEDMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
|
DMA_Init(sEE_I2C_DMA_CHANNEL_TX, &sEEDMA_InitStructure);
|
|
/* I2C RX DMA Channel configuration */
|
DMA_DeInit(sEE_I2C_DMA_CHANNEL_RX);
|
DMA_Init(sEE_I2C_DMA_CHANNEL_RX, &sEEDMA_InitStructure);
|
|
/* Enable the DMA Channels Interrupts */
|
DMA_ITConfig(sEE_I2C_DMA_CHANNEL_TX, DMA_IT_TC, ENABLE);
|
DMA_ITConfig(sEE_I2C_DMA_CHANNEL_RX, DMA_IT_TC, ENABLE);
|
}
|
|
/**
|
* @brief Initializes DMA channel used by the I2C EEPROM driver.
|
* @param None
|
* @retval None
|
*/
|
void sEE_LowLevel_DMAConfig(uint32_t pBuffer, uint32_t BufferSize, uint32_t Direction)
|
{
|
/* Initialize the DMA with the new parameters */
|
if (Direction == sEE_DIRECTION_TX)
|
{
|
/* Configure the DMA Tx Channel with the buffer address and the buffer size */
|
sEEDMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)pBuffer;
|
sEEDMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;
|
sEEDMA_InitStructure.DMA_BufferSize = (uint32_t)BufferSize;
|
DMA_Init(sEE_I2C_DMA_CHANNEL_TX, &sEEDMA_InitStructure);
|
}
|
else
|
{
|
/* Configure the DMA Rx Channel with the buffer address and the buffer size */
|
sEEDMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)pBuffer;
|
sEEDMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
|
sEEDMA_InitStructure.DMA_BufferSize = (uint32_t)BufferSize;
|
DMA_Init(sEE_I2C_DMA_CHANNEL_RX, &sEEDMA_InitStructure);
|
}
|
}
|
|
/**
|
* @}
|
*/
|
|
|
/**
|
* @}
|
*/
|
|
/**
|
* @}
|
*/
|
|
/**
|
* @}
|
*/
|
|
/**
|
* @}
|
*/
|
|
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/
|
