2 ******************************************************************************
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3 * @file stm320518_eval.c
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4 * @author MCD Application Team
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6 * @date 27-January-2012
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7 * @brief This file provides:
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8 * - set of firmware functions to manage Leds, push-button and COM ports
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9 ******************************************************************************
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12 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
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13 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
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14 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
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15 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
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16 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
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17 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
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19 * FOR MORE INFORMATION PLEASE READ CAREFULLY THE LICENSE AGREEMENT FILE
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20 * LOCATED IN THE ROOT DIRECTORY OF THIS FIRMWARE PACKAGE.
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22 * <h2><center>© COPYRIGHT 2012 STMicroelectronics</center></h2>
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23 ******************************************************************************
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26 /* Includes ------------------------------------------------------------------*/
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27 #include "stm320518_eval.h"
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29 /** @addtogroup Utilities
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33 /** @addtogroup STM32_EVAL
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37 /** @addtogroup STM320518_EVAL
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41 /** @defgroup STM320518_EVAL_LOW_LEVEL
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42 * @brief This file provides firmware functions to manage Leds, push-buttons,
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43 * COM ports, SD card on SPI and temperature sensor (LM75) available on
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44 * STM320518-EVAL evaluation board from STMicroelectronics.
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48 /** @defgroup STM320518_EVAL_LOW_LEVEL_Private_TypesDefinitions
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56 /** @defgroup STM320518_EVAL_LOW_LEVEL_Private_Defines
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64 /** @defgroup STM320518_EVAL_LOW_LEVEL_Private_Macros
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72 /** @defgroup STM320518_EVAL_LOW_LEVEL_Private_Variables
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75 GPIO_TypeDef* GPIO_PORT[LEDn] = {LED1_GPIO_PORT, LED2_GPIO_PORT, LED3_GPIO_PORT,
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77 const uint16_t GPIO_PIN[LEDn] = {LED1_PIN, LED2_PIN, LED3_PIN,
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79 const uint32_t GPIO_CLK[LEDn] = {LED1_GPIO_CLK, LED2_GPIO_CLK, LED3_GPIO_CLK,
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82 GPIO_TypeDef* BUTTON_PORT[BUTTONn] = {TAMPER_BUTTON_GPIO_PORT, KEY_BUTTON_GPIO_PORT,
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83 RIGHT_BUTTON_GPIO_PORT, LEFT_BUTTON_GPIO_PORT,
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84 UP_BUTTON_GPIO_PORT, DOWN_BUTTON_GPIO_PORT,
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85 SEL_BUTTON_GPIO_PORT};
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87 const uint16_t BUTTON_PIN[BUTTONn] = {TAMPER_BUTTON_PIN, KEY_BUTTON_PIN,
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88 RIGHT_BUTTON_PIN, LEFT_BUTTON_PIN,
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89 UP_BUTTON_PIN, DOWN_BUTTON_PIN,
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92 const uint32_t BUTTON_CLK[BUTTONn] = {TAMPER_BUTTON_GPIO_CLK, KEY_BUTTON_GPIO_CLK,
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93 RIGHT_BUTTON_GPIO_CLK, LEFT_BUTTON_GPIO_CLK,
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94 UP_BUTTON_GPIO_CLK, DOWN_BUTTON_GPIO_CLK,
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95 SEL_BUTTON_GPIO_CLK};
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97 const uint16_t BUTTON_EXTI_LINE[BUTTONn] = {TAMPER_BUTTON_EXTI_LINE,
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98 KEY_BUTTON_EXTI_LINE,
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99 RIGHT_BUTTON_EXTI_LINE,
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100 LEFT_BUTTON_EXTI_LINE,
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101 UP_BUTTON_EXTI_LINE,
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102 DOWN_BUTTON_EXTI_LINE,
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103 SEL_BUTTON_EXTI_LINE};
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105 const uint16_t BUTTON_PORT_SOURCE[BUTTONn] = {TAMPER_BUTTON_EXTI_PORT_SOURCE,
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106 KEY_BUTTON_EXTI_PORT_SOURCE,
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107 RIGHT_BUTTON_EXTI_PORT_SOURCE,
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108 LEFT_BUTTON_EXTI_PORT_SOURCE,
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109 UP_BUTTON_EXTI_PORT_SOURCE,
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110 DOWN_BUTTON_EXTI_PORT_SOURCE,
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111 SEL_BUTTON_EXTI_PORT_SOURCE};
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113 const uint16_t BUTTON_PIN_SOURCE[BUTTONn] = {TAMPER_BUTTON_EXTI_PIN_SOURCE,
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114 KEY_BUTTON_EXTI_PIN_SOURCE,
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115 RIGHT_BUTTON_EXTI_PIN_SOURCE,
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116 LEFT_BUTTON_EXTI_PIN_SOURCE,
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117 UP_BUTTON_EXTI_PIN_SOURCE,
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118 DOWN_BUTTON_EXTI_PIN_SOURCE,
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119 SEL_BUTTON_EXTI_PIN_SOURCE};
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121 const uint16_t BUTTON_IRQn[BUTTONn] = {TAMPER_BUTTON_EXTI_IRQn, KEY_BUTTON_EXTI_IRQn,
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122 RIGHT_BUTTON_EXTI_IRQn, LEFT_BUTTON_EXTI_IRQn,
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123 UP_BUTTON_EXTI_IRQn, DOWN_BUTTON_EXTI_IRQn,
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124 SEL_BUTTON_EXTI_IRQn};
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126 USART_TypeDef* COM_USART[COMn] = {EVAL_COM1};
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128 GPIO_TypeDef* COM_TX_PORT[COMn] = {EVAL_COM1_TX_GPIO_PORT};
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130 GPIO_TypeDef* COM_RX_PORT[COMn] = {EVAL_COM1_RX_GPIO_PORT};
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132 const uint32_t COM_USART_CLK[COMn] = {EVAL_COM1_CLK};
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134 const uint32_t COM_TX_PORT_CLK[COMn] = {EVAL_COM1_TX_GPIO_CLK};
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136 const uint32_t COM_RX_PORT_CLK[COMn] = {EVAL_COM1_RX_GPIO_CLK};
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138 const uint16_t COM_TX_PIN[COMn] = {EVAL_COM1_TX_PIN};
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140 const uint16_t COM_RX_PIN[COMn] = {EVAL_COM1_RX_PIN};
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142 const uint16_t COM_TX_PIN_SOURCE[COMn] = {EVAL_COM1_TX_SOURCE};
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144 const uint16_t COM_RX_PIN_SOURCE[COMn] = {EVAL_COM1_RX_SOURCE};
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146 const uint16_t COM_TX_AF[COMn] = {EVAL_COM1_TX_AF};
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148 const uint16_t COM_RX_AF[COMn] = {EVAL_COM1_RX_AF};
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156 /** @defgroup STM320518_EVAL_LOW_LEVEL_Private_FunctionPrototypes
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164 /** @defgroup STM320518_EVAL_LOW_LEVEL_Private_Functions
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169 * @brief Configures LED GPIO.
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170 * @param Led: Specifies the Led to be configured.
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171 * This parameter can be one of following parameters:
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178 void STM_EVAL_LEDInit(Led_TypeDef Led)
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180 GPIO_InitTypeDef GPIO_InitStructure;
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182 /* Enable the GPIO_LED Clock */
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183 RCC_AHBPeriphClockCmd(GPIO_CLK[Led], ENABLE);
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185 /* Configure the GPIO_LED pin */
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186 GPIO_InitStructure.GPIO_Pin = GPIO_PIN[Led];
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187 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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188 GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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189 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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190 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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191 GPIO_Init(GPIO_PORT[Led], &GPIO_InitStructure);
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192 GPIO_PORT[Led]->BSRR = GPIO_PIN[Led];
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196 * @brief Turns selected LED On.
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197 * @param Led: Specifies the Led to be set on.
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198 * This parameter can be one of following parameters:
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205 void STM_EVAL_LEDOn(Led_TypeDef Led)
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207 GPIO_PORT[Led]->BRR = GPIO_PIN[Led];
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211 * @brief Turns selected LED Off.
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212 * @param Led: Specifies the Led to be set off.
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213 * This parameter can be one of following parameters:
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220 void STM_EVAL_LEDOff(Led_TypeDef Led)
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222 GPIO_PORT[Led]->BSRR = GPIO_PIN[Led];
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226 * @brief Toggles the selected LED.
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227 * @param Led: Specifies the Led to be toggled.
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228 * This parameter can be one of following parameters:
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235 void STM_EVAL_LEDToggle(Led_TypeDef Led)
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237 GPIO_PORT[Led]->ODR ^= GPIO_PIN[Led];
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241 * @brief Configures Button GPIO and EXTI Line.
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242 * @param Button: Specifies the Button to be configured.
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243 * This parameter can be one of following parameters:
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244 * @arg BUTTON_TAMPER: Tamper Push Button
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245 * @arg BUTTON_KEY: Key Push Button
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246 * @arg BUTTON_RIGHT: Joystick Right Push Button
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247 * @arg BUTTON_LEFT: Joystick Left Push Button
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248 * @arg BUTTON_UP: Joystick Up Push Button
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249 * @arg BUTTON_DOWN: Joystick Down Push Button
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250 * @arg BUTTON_SEL: Joystick Sel Push Button
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251 * @param Button_Mode: Specifies Button mode.
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252 * This parameter can be one of following parameters:
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253 * @arg BUTTON_MODE_GPIO: Button will be used as simple IO
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254 * @arg BUTTON_MODE_EXTI: Button will be connected to EXTI line with interrupt
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255 * generation capability
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258 void STM_EVAL_PBInit(Button_TypeDef Button, ButtonMode_TypeDef Button_Mode)
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260 GPIO_InitTypeDef GPIO_InitStructure;
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261 EXTI_InitTypeDef EXTI_InitStructure;
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262 NVIC_InitTypeDef NVIC_InitStructure;
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264 /* Enable the BUTTON Clock */
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265 RCC_AHBPeriphClockCmd(BUTTON_CLK[Button], ENABLE);
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266 RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
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268 /* Configure Button pin as input */
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269 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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270 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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271 GPIO_InitStructure.GPIO_Pin = BUTTON_PIN[Button];
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272 GPIO_Init(BUTTON_PORT[Button], &GPIO_InitStructure);
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274 if (Button_Mode == BUTTON_MODE_EXTI)
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276 /* Connect Button EXTI Line to Button GPIO Pin */
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277 SYSCFG_EXTILineConfig(BUTTON_PORT_SOURCE[Button], BUTTON_PIN_SOURCE[Button]);
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279 /* Configure Button EXTI line */
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280 EXTI_InitStructure.EXTI_Line = BUTTON_EXTI_LINE[Button];
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281 EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
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282 if ((Button != BUTTON_TAMPER) && (Button != BUTTON_KEY))
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284 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
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288 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
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290 EXTI_InitStructure.EXTI_LineCmd = ENABLE;
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291 EXTI_Init(&EXTI_InitStructure);
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293 /* Enable and set Button EXTI Interrupt to the lowest priority */
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294 NVIC_InitStructure.NVIC_IRQChannel = BUTTON_IRQn[Button];
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295 NVIC_InitStructure.NVIC_IRQChannelPriority = 0x03;
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296 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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298 NVIC_Init(&NVIC_InitStructure);
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303 * @brief Returns the selected Button state.
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304 * @param Button: Specifies the Button to be checked.
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305 * This parameter can be one of following parameters:
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306 * @arg BUTTON_TAMPER: Tamper Push Button
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307 * @arg BUTTON_KEY: Key Push Button
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308 * @arg BUTTON_RIGHT: Joystick Right Push Button
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309 * @arg BUTTON_LEFT: Joystick Left Push Button
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310 * @arg BUTTON_UP: Joystick Up Push Button
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311 * @arg BUTTON_DOWN: Joystick Down Push Button
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312 * @arg BUTTON_SEL: Joystick Sel Push Button
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313 * @retval The Button GPIO pin value.
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315 uint32_t STM_EVAL_PBGetState(Button_TypeDef Button)
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317 /* There is no Wakeup button on STM320518-EVAL. */
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318 return GPIO_ReadInputDataBit(BUTTON_PORT[Button], BUTTON_PIN[Button]);
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322 * @brief Configures COM port.
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323 * @param COM: Specifies the COM port to be configured.
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324 * This parameter can be one of following parameters:
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326 * @param USART_InitStruct: pointer to a USART_InitTypeDef structure that
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327 * contains the configuration information for the specified USART peripheral.
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330 void STM_EVAL_COMInit(COM_TypeDef COM, USART_InitTypeDef* USART_InitStruct)
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332 GPIO_InitTypeDef GPIO_InitStructure;
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334 /* Enable GPIO clock */
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335 RCC_AHBPeriphClockCmd(COM_TX_PORT_CLK[COM] | COM_RX_PORT_CLK[COM], ENABLE);
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337 /* Enable USART clock */
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338 RCC_APB2PeriphClockCmd(COM_USART_CLK[COM], ENABLE);
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340 /* Connect PXx to USARTx_Tx */
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341 GPIO_PinAFConfig(COM_TX_PORT[COM], COM_TX_PIN_SOURCE[COM], COM_TX_AF[COM]);
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343 /* Connect PXx to USARTx_Rx */
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344 GPIO_PinAFConfig(COM_RX_PORT[COM], COM_RX_PIN_SOURCE[COM], COM_RX_AF[COM]);
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346 /* Configure USART Tx as alternate function push-pull */
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347 GPIO_InitStructure.GPIO_Pin = COM_TX_PIN[COM];
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348 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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349 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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350 GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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351 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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352 GPIO_Init(COM_TX_PORT[COM], &GPIO_InitStructure);
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354 /* Configure USART Rx as alternate function push-pull */
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355 GPIO_InitStructure.GPIO_Pin = COM_RX_PIN[COM];
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356 GPIO_Init(COM_RX_PORT[COM], &GPIO_InitStructure);
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358 /* USART configuration */
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359 USART_Init(COM_USART[COM], USART_InitStruct);
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362 USART_Cmd(COM_USART[COM], ENABLE);
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366 * @brief DeInitializes the SPI interface.
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370 void SD_LowLevel_DeInit(void)
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372 GPIO_InitTypeDef GPIO_InitStructure;
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374 SPI_Cmd(SD_SPI, DISABLE); /*!< SD_SPI disable */
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375 SPI_I2S_DeInit(SD_SPI); /*!< DeInitializes the SD_SPI */
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377 /*!< SD_SPI Periph clock disable */
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378 RCC_APB2PeriphClockCmd(SD_SPI_CLK, DISABLE);
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380 /*!< Configure SD_SPI pins: SCK */
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381 GPIO_InitStructure.GPIO_Pin = SD_SPI_SCK_PIN;
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382 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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383 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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384 GPIO_Init(SD_SPI_SCK_GPIO_PORT, &GPIO_InitStructure);
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386 /*!< Configure SD_SPI pins: MISO */
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387 GPIO_InitStructure.GPIO_Pin = SD_SPI_MISO_PIN;
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388 GPIO_Init(SD_SPI_MISO_GPIO_PORT, &GPIO_InitStructure);
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390 /*!< Configure SD_SPI pins: MOSI */
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391 GPIO_InitStructure.GPIO_Pin = SD_SPI_MOSI_PIN;
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392 GPIO_Init(SD_SPI_MOSI_GPIO_PORT, &GPIO_InitStructure);
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394 /*!< Configure SD_SPI_CS_PIN pin: SD Card CS pin */
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395 GPIO_InitStructure.GPIO_Pin = SD_CS_PIN;
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396 GPIO_Init(SD_CS_GPIO_PORT, &GPIO_InitStructure);
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398 /*!< Configure SD_SPI_DETECT_PIN pin: SD Card detect pin */
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399 GPIO_InitStructure.GPIO_Pin = SD_DETECT_PIN;
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400 GPIO_Init(SD_DETECT_GPIO_PORT, &GPIO_InitStructure);
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404 * @brief Initializes the SD Card and put it into StandBy State (Ready for
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409 void SD_LowLevel_Init(void)
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411 GPIO_InitTypeDef GPIO_InitStructure;
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412 SPI_InitTypeDef SPI_InitStructure;
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414 /*!< SD_SPI_CS_GPIO, SD_SPI_MOSI_GPIO, SD_SPI_MISO_GPIO, SD_SPI_DETECT_GPIO
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415 and SD_SPI_SCK_GPIO Periph clock enable */
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416 RCC_AHBPeriphClockCmd(SD_CS_GPIO_CLK | SD_SPI_MOSI_GPIO_CLK | SD_SPI_MISO_GPIO_CLK |
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417 SD_SPI_SCK_GPIO_CLK | SD_DETECT_GPIO_CLK, ENABLE);
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419 /*!< SD_SPI Periph clock enable */
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420 RCC_APB2PeriphClockCmd(SD_SPI_CLK, ENABLE);
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422 /*!< Configure SD_SPI pins: SCK */
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423 GPIO_InitStructure.GPIO_Pin = SD_SPI_SCK_PIN;
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424 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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425 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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426 GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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427 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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428 GPIO_Init(SD_SPI_SCK_GPIO_PORT, &GPIO_InitStructure);
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430 /*!< Configure SD_SPI pins: MISO */
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431 GPIO_InitStructure.GPIO_Pin = SD_SPI_MISO_PIN;
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432 GPIO_Init(SD_SPI_MISO_GPIO_PORT, &GPIO_InitStructure);
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434 /*!< Configure SD_SPI pins: MOSI */
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435 GPIO_InitStructure.GPIO_Pin = SD_SPI_MOSI_PIN;
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436 GPIO_Init(SD_SPI_MOSI_GPIO_PORT, &GPIO_InitStructure);
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438 /*!< Configure SD_SPI_CS_PIN pin: SD Card CS pin */
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439 GPIO_InitStructure.GPIO_Pin = SD_CS_PIN;
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440 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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441 GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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442 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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443 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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444 GPIO_Init(SD_CS_GPIO_PORT, &GPIO_InitStructure);
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446 /*!< Configure SD_SPI_DETECT_PIN pin: SD Card detect pin */
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447 GPIO_InitStructure.GPIO_Pin = SD_DETECT_PIN;
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448 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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449 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
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450 GPIO_Init(SD_DETECT_GPIO_PORT, &GPIO_InitStructure);
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452 /* Connect PXx to SD_SPI_SCK */
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453 GPIO_PinAFConfig(SD_SPI_SCK_GPIO_PORT, SD_SPI_SCK_SOURCE, SD_SPI_SCK_AF);
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455 /* Connect PXx to SD_SPI_MISO */
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456 GPIO_PinAFConfig(SD_SPI_MISO_GPIO_PORT, SD_SPI_MISO_SOURCE, SD_SPI_MISO_AF);
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458 /* Connect PXx to SD_SPI_MOSI */
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459 GPIO_PinAFConfig(SD_SPI_MOSI_GPIO_PORT, SD_SPI_MOSI_SOURCE, SD_SPI_MOSI_AF);
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461 /*!< SD_SPI Config */
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462 SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
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463 SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
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464 SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
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465 SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
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466 SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
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467 SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
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468 SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_2;
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470 SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
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471 SPI_InitStructure.SPI_CRCPolynomial = 7;
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472 SPI_Init(SD_SPI, &SPI_InitStructure);
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474 SPI_RxFIFOThresholdConfig(SD_SPI, SPI_RxFIFOThreshold_QF);
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476 SPI_Cmd(SD_SPI, ENABLE); /*!< SD_SPI enable */
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480 * @brief DeInitializes the LM75_I2C.
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484 void LM75_LowLevel_DeInit(void)
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486 GPIO_InitTypeDef GPIO_InitStructure;
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488 /*!< Disable LM75_I2C */
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489 I2C_Cmd(LM75_I2C, DISABLE);
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491 /*!< DeInitializes the LM75_I2C */
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492 I2C_DeInit(LM75_I2C);
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494 /*!< LM75_I2C Periph clock disable */
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495 RCC_APB1PeriphClockCmd(LM75_I2C_CLK, DISABLE);
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497 /*!< Configure LM75_I2C pins: SCL */
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498 GPIO_InitStructure.GPIO_Pin = LM75_I2C_SCL_PIN;
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499 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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500 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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501 GPIO_Init(LM75_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
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503 /*!< Configure LM75_I2C pins: SDA */
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504 GPIO_InitStructure.GPIO_Pin = LM75_I2C_SDA_PIN;
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505 GPIO_Init(LM75_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);
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507 /*!< Configure LM75_I2C pin: SMBUS ALERT */
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508 GPIO_InitStructure.GPIO_Pin = LM75_I2C_SMBUSALERT_PIN;
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509 GPIO_Init(LM75_I2C_SMBUSALERT_GPIO_PORT, &GPIO_InitStructure);
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513 * @brief Initializes the LM75_I2C..
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517 void LM75_LowLevel_Init(void)
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519 GPIO_InitTypeDef GPIO_InitStructure;
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521 /*!< LM75_I2C Periph clock enable */
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522 RCC_APB1PeriphClockCmd(LM75_I2C_CLK, ENABLE);
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524 /* Configure the I2C clock source. The clock is derived from the HSI */
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525 RCC_I2CCLKConfig(RCC_I2C1CLK_HSI);
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527 /*!< LM75_I2C_SCL_GPIO_CLK, LM75_I2C_SDA_GPIO_CLK
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528 and LM75_I2C_SMBUSALERT_GPIO_CLK Periph clock enable */
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529 RCC_AHBPeriphClockCmd(LM75_I2C_SCL_GPIO_CLK | LM75_I2C_SDA_GPIO_CLK |
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530 LM75_I2C_SMBUSALERT_GPIO_CLK, ENABLE);
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532 /* Connect PXx to I2C_SCL */
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533 GPIO_PinAFConfig(LM75_I2C_SCL_GPIO_PORT, LM75_I2C_SCL_SOURCE, LM75_I2C_SCL_AF);
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535 /* Connect PXx to I2C_SDA */
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536 GPIO_PinAFConfig(LM75_I2C_SDA_GPIO_PORT, LM75_I2C_SDA_SOURCE, LM75_I2C_SDA_AF);
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538 /* Connect PXx to I2C_SMBUSALER */
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539 GPIO_PinAFConfig(LM75_I2C_SMBUSALERT_GPIO_PORT, LM75_I2C_SMBUSALERT_SOURCE, LM75_I2C_SMBUSALERT_AF);
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541 /*!< Configure LM75_I2C pins: SCL */
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542 GPIO_InitStructure.GPIO_Pin = LM75_I2C_SCL_PIN;
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543 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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544 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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545 GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
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546 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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547 GPIO_Init(LM75_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
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549 /*!< Configure LM75_I2C pins: SDA */
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550 GPIO_InitStructure.GPIO_Pin = LM75_I2C_SDA_PIN;
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551 GPIO_Init(LM75_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);
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553 /*!< Configure LM75_I2C pin: SMBUS ALERT */
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554 GPIO_InitStructure.GPIO_Pin = LM75_I2C_SMBUSALERT_PIN;
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555 GPIO_Init(LM75_I2C_SMBUSALERT_GPIO_PORT, &GPIO_InitStructure);
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559 * @brief DeInitializes peripherals used by the I2C EEPROM driver.
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563 void sEE_LowLevel_DeInit(void)
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565 GPIO_InitTypeDef GPIO_InitStructure;
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567 /* sEE_I2C Peripheral Disable */
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568 I2C_Cmd(sEE_I2C, DISABLE);
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570 /* sEE_I2C DeInit */
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571 I2C_DeInit(sEE_I2C);
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573 /*!< sEE_I2C Periph clock disable */
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574 RCC_APB1PeriphClockCmd(sEE_I2C_CLK, DISABLE);
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576 /*!< GPIO configuration */
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577 /*!< Configure sEE_I2C pins: SCL */
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578 GPIO_InitStructure.GPIO_Pin = sEE_I2C_SCL_PIN;
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579 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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580 GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
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581 GPIO_Init(sEE_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
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583 /*!< Configure sEE_I2C pins: SDA */
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584 GPIO_InitStructure.GPIO_Pin = sEE_I2C_SDA_PIN;
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585 GPIO_Init(sEE_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);
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589 * @brief Initializes peripherals used by the I2C EEPROM driver.
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593 void sEE_LowLevel_Init(void)
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595 GPIO_InitTypeDef GPIO_InitStructure;
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597 /* Configure the I2C clock source. The clock is derived from the HSI */
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598 RCC_I2CCLKConfig(RCC_I2C1CLK_HSI);
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600 /*!< sEE_I2C_SCL_GPIO_CLK and sEE_I2C_SDA_GPIO_CLK Periph clock enable */
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601 RCC_AHBPeriphClockCmd(sEE_I2C_SCL_GPIO_CLK | sEE_I2C_SDA_GPIO_CLK, ENABLE);
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603 /*!< sEE_I2C Periph clock enable */
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604 RCC_APB1PeriphClockCmd(sEE_I2C_CLK, ENABLE);
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606 /* Connect PXx to I2C_SCL*/
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607 GPIO_PinAFConfig(sEE_I2C_SCL_GPIO_PORT, sEE_I2C_SCL_SOURCE, sEE_I2C_SCL_AF);
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609 /* Connect PXx to I2C_SDA*/
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610 GPIO_PinAFConfig(sEE_I2C_SDA_GPIO_PORT, sEE_I2C_SDA_SOURCE, sEE_I2C_SDA_AF);
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612 /*!< GPIO configuration */
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613 /*!< Configure sEE_I2C pins: SCL */
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614 GPIO_InitStructure.GPIO_Pin = sEE_I2C_SCL_PIN;
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615 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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616 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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617 GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
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618 GPIO_Init(sEE_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
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620 /*!< Configure sEE_I2C pins: SDA */
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621 GPIO_InitStructure.GPIO_Pin = sEE_I2C_SDA_PIN;
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622 GPIO_Init(sEE_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);
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645 /******************* (C) COPYRIGHT 2012 STMicroelectronics *****END OF FILE****/
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