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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/SPI/Simplex_Interrupt/main.c @ 89:fc21fb5b171b default tip
Make error message more useful
author | Daniel O'Connor <darius@dons.net.au> |
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date | Fri, 13 Mar 2015 11:39:59 +1030 |
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1 /** |
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2 ****************************************************************************** |
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3 * @file SPI/Simplex_Interrupt/main.c |
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4 * @author MCD Application Team |
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5 * @version V3.5.0 |
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6 * @date 08-April-2011 |
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7 * @brief Main program body |
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8 ****************************************************************************** |
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9 * @attention |
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10 * |
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11 * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
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12 * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE |
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13 * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY |
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14 * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING |
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15 * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE |
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16 * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
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17 * |
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18 * <h2><center>© COPYRIGHT 2011 STMicroelectronics</center></h2> |
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19 ****************************************************************************** |
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20 */ |
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21 |
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22 /* Includes ------------------------------------------------------------------*/ |
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23 #include "stm32f10x.h" |
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24 #include "platform_config.h" |
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25 |
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26 /** @addtogroup STM32F10x_StdPeriph_Examples |
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27 * @{ |
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28 */ |
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29 |
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30 /** @addtogroup SPI_Simplex_Interrupt |
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31 * @{ |
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32 */ |
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33 |
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34 /* Private typedef -----------------------------------------------------------*/ |
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35 typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus; |
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36 |
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37 /* Private define ------------------------------------------------------------*/ |
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38 #define BufferSize 32 |
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39 |
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40 /* Private macro -------------------------------------------------------------*/ |
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41 /* Private variables ---------------------------------------------------------*/ |
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42 SPI_InitTypeDef SPI_InitStructure; |
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43 uint8_t SPI_MASTER_Buffer_Tx[BufferSize] = {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, |
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44 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, |
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45 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, |
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46 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, |
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47 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, |
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48 0x1F, 0x20}; |
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49 uint8_t SPI_SLAVE_Buffer_Rx[BufferSize]; |
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50 __IO uint8_t TxIdx = 0, RxIdx = 0; |
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51 volatile TestStatus TransferStatus = FAILED; |
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52 |
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53 /* Private functions ---------------------------------------------------------*/ |
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54 void RCC_Configuration(void); |
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55 void GPIO_Configuration(void); |
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56 void NVIC_Configuration(void); |
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57 TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength); |
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58 |
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59 /** |
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60 * @brief Main program |
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61 * @param None |
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62 * @retval None |
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63 */ |
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64 int main(void) |
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65 { |
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66 /*!< At this stage the microcontroller clock setting is already configured, |
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67 this is done through SystemInit() function which is called from startup |
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68 file (startup_stm32f10x_xx.s) before to branch to application main. |
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69 To reconfigure the default setting of SystemInit() function, refer to |
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70 system_stm32f10x.c file |
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71 */ |
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72 |
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73 /* System clocks configuration ---------------------------------------------*/ |
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74 RCC_Configuration(); |
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75 |
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76 /* NVIC configuration ------------------------------------------------------*/ |
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77 NVIC_Configuration(); |
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78 |
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79 /* GPIO configuration ------------------------------------------------------*/ |
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80 GPIO_Configuration(); |
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81 |
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82 /* SPI_MASTER configuration ------------------------------------------------*/ |
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83 SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx; |
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84 SPI_InitStructure.SPI_Mode = SPI_Mode_Master; |
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85 SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b; |
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86 SPI_InitStructure.SPI_CPOL = SPI_CPOL_Low; |
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87 SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge; |
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88 SPI_InitStructure.SPI_NSS = SPI_NSS_Soft; |
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89 SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4; |
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90 SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB; |
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91 SPI_InitStructure.SPI_CRCPolynomial = 7; |
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92 SPI_Init(SPI_MASTER, &SPI_InitStructure); |
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93 |
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94 /* SPI_SLAVE configuration -------------------------------------------------*/ |
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95 SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Rx; |
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96 SPI_InitStructure.SPI_Mode = SPI_Mode_Slave; |
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97 SPI_Init(SPI_SLAVE, &SPI_InitStructure); |
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98 |
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99 /* Enable SPI_MASTER TXE interrupt */ |
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100 SPI_I2S_ITConfig(SPI_MASTER, SPI_I2S_IT_TXE, ENABLE); |
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101 /* Enable SPI_SLAVE RXNE interrupt */ |
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102 SPI_I2S_ITConfig(SPI_SLAVE, SPI_I2S_IT_RXNE, ENABLE); |
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103 |
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104 /* Enable SPI_SLAVE */ |
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105 SPI_Cmd(SPI_SLAVE, ENABLE); |
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106 /* Enable SPI_MASTER */ |
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107 SPI_Cmd(SPI_MASTER, ENABLE); |
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108 |
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109 /* Transfer procedure */ |
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110 while (RxIdx < BufferSize) |
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111 {} |
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112 |
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113 /* Check the correctness of written dada */ |
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114 TransferStatus = Buffercmp(SPI_SLAVE_Buffer_Rx, SPI_MASTER_Buffer_Tx, BufferSize); |
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115 /* TransferStatus = PASSED, if the transmitted and received data |
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116 are equal */ |
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117 /* TransferStatus = FAILED, if the transmitted and received data |
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118 are different */ |
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119 |
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120 while (1) |
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121 {} |
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122 } |
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123 |
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124 /** |
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125 * @brief Configures the different system clocks. |
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126 * @param None |
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127 * @retval None |
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128 */ |
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129 void RCC_Configuration(void) |
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130 { |
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131 /* PCLK2 = HCLK/2 */ |
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132 RCC_PCLK2Config(RCC_HCLK_Div2); |
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133 |
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134 /* Enable peripheral clocks --------------------------------------------------*/ |
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135 #ifdef USE_STM3210C_EVAL |
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136 /* Enable GPIO clock for SPI_MASTER and SPI_SLAVE */ |
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137 RCC_APB2PeriphClockCmd(SPI_MASTER_GPIO_CLK | SPI_SLAVE_GPIO_CLK | |
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138 RCC_APB2Periph_AFIO, ENABLE); |
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139 |
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140 /* Enable SPI_MASTER Periph clock */ |
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141 RCC_APB1PeriphClockCmd(SPI_MASTER_CLK, ENABLE); |
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142 #else |
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143 /* Enable SPI_MASTER clock and GPIO clock for SPI_MASTER and SPI_SLAVE */ |
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144 RCC_APB2PeriphClockCmd(SPI_MASTER_GPIO_CLK | SPI_SLAVE_GPIO_CLK | |
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145 SPI_MASTER_CLK, ENABLE); |
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146 #endif |
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147 /* Enable SPI_SLAVE Periph clock */ |
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148 RCC_APB1PeriphClockCmd(SPI_SLAVE_CLK, ENABLE); |
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149 } |
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150 |
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151 /** |
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152 * @brief Configures the different GPIO ports. |
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153 * @param None |
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154 * @retval None |
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155 */ |
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156 void GPIO_Configuration(void) |
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157 { |
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158 GPIO_InitTypeDef GPIO_InitStructure; |
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159 |
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160 #ifdef USE_STM3210C_EVAL |
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161 /* Enable SPI3 Pins Software Remapping */ |
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162 GPIO_PinRemapConfig(GPIO_Remap_SPI3, ENABLE); |
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163 #endif |
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164 |
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165 /* Configure SPI_MASTER pins: SCK and MOSI ---------------------------------*/ |
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166 /* Configure SCK and MOSI pins as Alternate Function Push Pull */ |
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167 GPIO_InitStructure.GPIO_Pin = SPI_MASTER_PIN_SCK | SPI_MASTER_PIN_MOSI; |
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168 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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169 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; |
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170 GPIO_Init(SPI_MASTER_GPIO, &GPIO_InitStructure); |
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171 |
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172 /* Configure SPI_SLAVE pins: SCK and MISO ---------------------------------*/ |
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173 /* Configure SCK and MOSI pins as Input Floating */ |
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174 GPIO_InitStructure.GPIO_Pin = SPI_SLAVE_PIN_SCK ; |
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175 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; |
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176 GPIO_Init(SPI_SLAVE_GPIO, &GPIO_InitStructure); |
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177 /* Configure MISO pin as Alternate Function Push Pull */ |
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178 GPIO_InitStructure.GPIO_Pin = SPI_SLAVE_PIN_MISO; |
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179 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; |
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180 GPIO_Init(SPI_SLAVE_GPIO, &GPIO_InitStructure); |
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181 } |
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182 |
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183 /** |
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184 * @brief Configure the nested vectored interrupt controller. |
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185 * @param None |
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186 * @retval None |
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187 */ |
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188 void NVIC_Configuration(void) |
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189 { |
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190 NVIC_InitTypeDef NVIC_InitStructure; |
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191 |
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192 /* 1 bit for pre-emption priority, 3 bits for subpriority */ |
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193 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); |
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194 |
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195 /* Configure and enable SPI_MASTER interrupt -------------------------------*/ |
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196 NVIC_InitStructure.NVIC_IRQChannel = SPI_MASTER_IRQn; |
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197 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; |
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198 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; |
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199 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; |
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200 NVIC_Init(&NVIC_InitStructure); |
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201 |
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202 /* Configure and enable SPI_SLAVE interrupt --------------------------------*/ |
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203 NVIC_InitStructure.NVIC_IRQChannel = SPI_SLAVE_IRQn; |
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204 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; |
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205 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; |
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206 NVIC_Init(&NVIC_InitStructure); |
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207 } |
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208 |
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209 /** |
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210 * @brief Compares two buffers. |
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211 * @param pBuffer1, pBuffer2: buffers to be compared. |
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212 * @param BufferLength: buffer's length |
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213 * @retval PASSED: pBuffer1 identical to pBuffer2 |
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214 * FAILED: pBuffer1 differs from pBuffer2 |
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215 */ |
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216 TestStatus Buffercmp(uint8_t* pBuffer1, uint8_t* pBuffer2, uint16_t BufferLength) |
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217 { |
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218 while (BufferLength--) |
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219 { |
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220 if (*pBuffer1 != *pBuffer2) |
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221 { |
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222 return FAILED; |
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223 } |
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224 |
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225 pBuffer1++; |
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226 pBuffer2++; |
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227 } |
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228 |
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229 return PASSED; |
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230 } |
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231 |
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232 #ifdef USE_FULL_ASSERT |
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233 |
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234 /** |
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235 * @brief Reports the name of the source file and the source line number |
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236 * where the assert_param error has occurred. |
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237 * @param file: pointer to the source file name |
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238 * @param line: assert_param error line source number |
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239 * @retval None |
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240 */ |
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241 void assert_failed(uint8_t* file, uint32_t line) |
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242 { |
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243 /* User can add his own implementation to report the file name and line number, |
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244 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
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245 |
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246 /* Infinite loop */ |
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247 while (1) |
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248 {} |
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249 } |
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250 |
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251 #endif |
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252 |
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253 /** |
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254 * @} |
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255 */ |
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256 |
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257 /** |
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258 * @} |
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259 */ |
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260 |
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261 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |