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annotate libs/STM32F10x_StdPeriph_Lib_V3.5.0/Project/STM32F10x_StdPeriph_Examples/I2S/Interrupt/main.c @ 0:c59513fd84fb
Initial commit of STM32 test code.
author | Daniel O'Connor <darius@dons.net.au> |
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date | Mon, 03 Oct 2011 21:19:15 +1030 |
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1 /** |
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2 ****************************************************************************** |
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3 * @file I2S/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 |
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25 /** @addtogroup STM32F10x_StdPeriph_Examples |
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26 * @{ |
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27 */ |
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28 |
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29 /** @addtogroup I2S_Interrupt |
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30 * @{ |
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31 */ |
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32 |
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33 /* Private typedef -----------------------------------------------------------*/ |
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34 typedef enum {FAILED = 0, PASSED = !FAILED} TestStatus; |
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35 |
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36 /* Private define ------------------------------------------------------------*/ |
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37 /* Private macro -------------------------------------------------------------*/ |
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38 /* Private variables ---------------------------------------------------------*/ |
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39 I2S_InitTypeDef I2S_InitStructure; |
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40 const uint16_t I2S3_Buffer_Tx[32] = {0x0102, 0x0304, 0x0506, 0x0708, 0x090A, 0x0B0C, |
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41 0x0D0E, 0x0F10, 0x1112, 0x1314, 0x1516, 0x1718, |
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42 0x191A, 0x1B1C, 0x1D1E, 0x1F20, 0x2122, 0x2324, |
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43 0x2526, 0x2728, 0x292A, 0x2B2C, 0x2D2E, 0x2F30, |
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44 0x3132, 0x3334, 0x3536, 0x3738, 0x393A, 0x3B3C, |
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45 0x3D3E, 0x3F40}; |
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46 |
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47 uint16_t I2S2_Buffer_Rx[32]; |
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48 __IO uint32_t TxIdx = 0, RxIdx = 0; |
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49 TestStatus TransferStatus1 = FAILED, TransferStatus2 = FAILED; |
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50 ErrorStatus HSEStartUpStatus; |
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51 |
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52 /* Private function prototypes -----------------------------------------------*/ |
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53 void RCC_Configuration(void); |
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54 void GPIO_Configuration(void); |
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55 void NVIC_Configuration(void); |
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56 TestStatus Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength); |
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57 TestStatus Buffercmp24bits(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength); |
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58 |
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59 /* Private functions ---------------------------------------------------------*/ |
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60 |
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61 /** |
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62 * @brief Main program |
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63 * @param None |
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64 * @retval None |
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65 */ |
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66 int main(void) |
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67 { |
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68 /*!< At this stage the microcontroller clock setting is already configured, |
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69 this is done through SystemInit() function which is called from startup |
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70 file (startup_stm32f10x_xx.s) before to branch to application main. |
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71 To reconfigure the default setting of SystemInit() function, refer to |
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72 system_stm32f10x.c file |
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73 */ |
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74 |
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75 /* System clocks configuration ---------------------------------------------*/ |
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76 RCC_Configuration(); |
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77 |
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78 /* NVIC configuration ------------------------------------------------------*/ |
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79 NVIC_Configuration(); |
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80 |
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81 /* GPIO configuration ------------------------------------------------------*/ |
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82 GPIO_Configuration(); |
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83 |
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84 SPI_I2S_DeInit(SPI3); |
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85 SPI_I2S_DeInit(SPI2); |
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86 |
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87 /* I2S peripheral configuration */ |
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88 I2S_InitStructure.I2S_Standard = I2S_Standard_Phillips; |
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89 I2S_InitStructure.I2S_DataFormat = I2S_DataFormat_16bextended; |
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90 I2S_InitStructure.I2S_MCLKOutput = I2S_MCLKOutput_Disable; |
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91 I2S_InitStructure.I2S_AudioFreq = I2S_AudioFreq_48k; |
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92 I2S_InitStructure.I2S_CPOL = I2S_CPOL_Low; |
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93 |
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94 /* I2S3 Master Transmitter to I2S2 Slave Receiver communication -----------*/ |
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95 /* I2S3 configuration */ |
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96 I2S_InitStructure.I2S_Mode = I2S_Mode_MasterTx; |
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97 I2S_Init(SPI3, &I2S_InitStructure); |
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98 |
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99 /* I2S2 configuration */ |
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100 I2S_InitStructure.I2S_Mode = I2S_Mode_SlaveRx; |
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101 I2S_Init(SPI2, &I2S_InitStructure); |
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102 |
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103 /* Enable the I2S3 TxE interrupt */ |
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104 SPI_I2S_ITConfig(SPI3, SPI_I2S_IT_TXE, ENABLE); |
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105 |
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106 /* Enable the I2S2 RxNE interrupt */ |
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107 SPI_I2S_ITConfig(SPI2, SPI_I2S_IT_RXNE, ENABLE); |
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108 |
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109 /* Enable the I2S2 */ |
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110 I2S_Cmd(SPI2, ENABLE); |
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111 |
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112 /* Enable the I2S3 */ |
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113 I2S_Cmd(SPI3, ENABLE); |
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114 |
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115 /* Wait the end of communication */ |
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116 while (RxIdx < 32) |
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117 {} |
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118 |
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119 TransferStatus1 = Buffercmp(I2S2_Buffer_Rx, (uint16_t*)I2S3_Buffer_Tx, 32); |
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120 /* TransferStatus1 = PASSED, if the data transmitted from I2S3 and received by |
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121 I2S2 are the same |
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122 TransferStatus1 = FAILED, if the data transmitted from I2S3 and received by |
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123 I2S2 are different */ |
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124 |
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125 /* Reinitialize the buffers */ |
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126 for (RxIdx = 0; RxIdx < 32; RxIdx++) |
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127 { |
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128 I2S2_Buffer_Rx[RxIdx] = 0; |
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129 } |
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130 TxIdx = 0; |
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131 RxIdx = 0; |
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132 |
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133 SPI_I2S_DeInit(SPI3); |
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134 SPI_I2S_DeInit(SPI2); |
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135 |
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136 /* I2S peripheral configuration */ |
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137 I2S_InitStructure.I2S_Standard = I2S_Standard_Phillips; |
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138 I2S_InitStructure.I2S_DataFormat = I2S_DataFormat_24b; |
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139 I2S_InitStructure.I2S_MCLKOutput = I2S_MCLKOutput_Disable; |
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140 I2S_InitStructure.I2S_AudioFreq = I2S_AudioFreq_16k; |
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141 I2S_InitStructure.I2S_CPOL = I2S_CPOL_Low; |
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142 |
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143 /* I2S3 Master Transmitter to I2S2 Slave Receiver communication -----------*/ |
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144 /* I2S3 configuration */ |
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145 I2S_InitStructure.I2S_Mode = I2S_Mode_MasterTx; |
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146 I2S_Init(SPI3, &I2S_InitStructure); |
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147 |
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148 /* I2S2 configuration */ |
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149 I2S_InitStructure.I2S_Mode = I2S_Mode_SlaveRx; |
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150 I2S_Init(SPI2, &I2S_InitStructure); |
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151 |
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152 /* Enable the I2S3 TxE interrupt */ |
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153 SPI_I2S_ITConfig(SPI3, SPI_I2S_IT_TXE, ENABLE); |
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154 |
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155 /* Enable the I2S2 RxNE interrupt */ |
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156 SPI_I2S_ITConfig(SPI2, SPI_I2S_IT_RXNE, ENABLE); |
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157 |
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158 /* Enable the I2S2 */ |
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159 I2S_Cmd(SPI2, ENABLE); |
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160 |
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161 /* Enable the I2S3 */ |
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162 I2S_Cmd(SPI3, ENABLE); |
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163 |
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164 /* Wait the end of communication */ |
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165 while (RxIdx < 32) |
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166 { |
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167 } |
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168 |
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169 TransferStatus2 = Buffercmp24bits(I2S2_Buffer_Rx, (uint16_t*)I2S3_Buffer_Tx, 32); |
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170 /* TransferStatus2 = PASSED, if the data transmitted from I2S3 and received by |
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171 I2S2 are the same |
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172 TransferStatus2 = FAILED, if the data transmitted from I2S3 and received by |
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173 I2S2 are different */ |
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174 |
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175 while (1) |
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176 { |
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177 } |
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178 } |
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179 |
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180 /** |
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181 * @brief Configures the different system clocks. |
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182 * @param None |
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183 * @retval None |
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184 */ |
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185 void RCC_Configuration(void) |
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186 { |
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187 /* RCC system reset(for debug purpose) */ |
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188 RCC_DeInit(); |
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189 |
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190 /* Enable HSE */ |
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191 RCC_HSEConfig(RCC_HSE_ON); |
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192 |
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193 /* Wait till HSE is ready */ |
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194 HSEStartUpStatus = RCC_WaitForHSEStartUp(); |
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195 |
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196 if(HSEStartUpStatus == SUCCESS) |
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197 { |
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198 /* Enable Prefetch Buffer */ |
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199 FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable); |
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200 |
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201 /* Flash 2 wait state */ |
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202 FLASH_SetLatency(FLASH_Latency_2); |
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203 |
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204 /* HCLK = SYSCLK */ |
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205 RCC_HCLKConfig(RCC_SYSCLK_Div1); |
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206 |
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207 /* PCLK2 = HCLK */ |
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208 RCC_PCLK2Config(RCC_HCLK_Div1); |
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209 |
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210 /* PCLK1 = HCLK/2 */ |
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211 RCC_PCLK1Config(RCC_HCLK_Div2); |
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212 |
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213 /* ADCCLK = PCLK2/4 */ |
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214 RCC_ADCCLKConfig(RCC_PCLK2_Div4); |
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215 |
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216 #ifndef STM32F10X_CL |
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217 /* PLLCLK = 8MHz * 9 = 72 MHz */ |
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218 RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9); |
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219 |
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220 #else |
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221 /* Configure PLLs *********************************************************/ |
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222 /* PLL2 configuration: PLL2CLK = (HSE / 5) * 8 = 40 MHz */ |
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223 RCC_PREDIV2Config(RCC_PREDIV2_Div5); |
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224 RCC_PLL2Config(RCC_PLL2Mul_8); |
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225 |
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226 /* Enable PLL2 */ |
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227 RCC_PLL2Cmd(ENABLE); |
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228 |
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229 /* Wait till PLL2 is ready */ |
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230 while (RCC_GetFlagStatus(RCC_FLAG_PLL2RDY) == RESET) |
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231 {} |
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232 |
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233 /* PLL configuration: PLLCLK = (PLL2 / 5) * 9 = 72 MHz */ |
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234 RCC_PREDIV1Config(RCC_PREDIV1_Source_PLL2, RCC_PREDIV1_Div5); |
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235 RCC_PLLConfig(RCC_PLLSource_PREDIV1, RCC_PLLMul_9); |
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236 |
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237 /* PLL3 configuration: PLL3CLK = (HSE / 5) * 11 => PLL3_VCO = 110 MHz */ |
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238 RCC_PLL3Config(RCC_PLL3Mul_11); |
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239 /* Enable PLL3 */ |
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240 RCC_PLL3Cmd(ENABLE); |
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241 /* Wait till PLL3 is ready */ |
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242 while (RCC_GetFlagStatus(RCC_FLAG_PLL3RDY) == RESET) |
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243 {} |
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244 |
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245 /* Configure I2S clock source: On Connectivity Line Devices, the I2S can be |
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246 clocked by PLL3 VCO instead of SYS_CLK in order to guarantee higher |
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247 precision */ |
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248 RCC_I2S3CLKConfig(RCC_I2S3CLKSource_PLL3_VCO); |
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249 RCC_I2S2CLKConfig(RCC_I2S2CLKSource_PLL3_VCO); |
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250 #endif |
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251 |
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252 /* Enable PLL */ |
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253 RCC_PLLCmd(ENABLE); |
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254 |
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255 /* Wait till PLL is ready */ |
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256 while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET) |
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257 { |
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258 } |
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259 |
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260 /* Select PLL as system clock source */ |
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261 RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK); |
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262 |
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263 /* Wait till PLL is used as system clock source */ |
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264 while(RCC_GetSYSCLKSource() != 0x08) |
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265 { |
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266 } |
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267 } |
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268 |
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269 /* Enable peripheral clocks ------------------------------------------------*/ |
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270 /* GPIOA, GPIOB and AFIO clocks enable */ |
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271 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | |
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272 RCC_APB2Periph_AFIO, ENABLE); |
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273 |
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274 #ifdef USE_STM3210C_EVAL |
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275 /* GPIOC Clock enable (for the SPI3 remapped pins) */ |
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276 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC , ENABLE); |
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277 #endif /* USE_STM3210C_EVAL */ |
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278 |
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279 /* SPI3 and SPI2 clocks enable */ |
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280 RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI3 | RCC_APB1Periph_SPI2, ENABLE); |
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281 } |
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282 |
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283 /** |
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284 * @brief Configures the different GPIO ports. |
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285 * @param None |
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286 * @retval None |
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287 */ |
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288 void GPIO_Configuration(void) |
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289 { |
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290 GPIO_InitTypeDef GPIO_InitStructure; |
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291 |
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292 #ifdef USE_STM3210E_EVAL |
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293 /* Disable the JTAG interface and enable the SWJ interface |
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294 This operation is not necessary for Connectivity Line devices since |
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295 SPI3 I/Os can be remapped on other GPIO pins */ |
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296 GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE); |
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297 #endif /* USE_STM3210E_EVAL */ |
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298 |
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299 /* Configure SPI2 pins: CK, WS and SD ---------------------------------*/ |
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300 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_15; |
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301 GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; |
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302 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; |
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303 GPIO_Init(GPIOB, &GPIO_InitStructure); |
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304 |
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305 #ifdef USE_STM3210C_EVAL |
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306 |
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307 /* Remap SPI3 on PC10-PC11-PC12-PA4 GPIO pins ------------------------*/ |
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308 GPIO_PinRemapConfig(GPIO_Remap_SPI3, ENABLE); |
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309 |
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310 /* Configure SPI3 pins: CK and SD ------------------------------------*/ |
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311 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_12; |
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312 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; |
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313 GPIO_Init(GPIOC, &GPIO_InitStructure); |
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314 |
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315 /* Configure SPI3 pins: WS -------------------------------------------*/ |
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316 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4; |
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317 GPIO_Init(GPIOA, &GPIO_InitStructure); |
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318 |
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319 #elif defined (USE_STM3210E_EVAL) |
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320 |
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321 /* Configure SPI3 pins: CK and SD ------------------------------------*/ |
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322 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_5; |
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323 GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; |
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324 GPIO_Init(GPIOB, &GPIO_InitStructure); |
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325 |
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326 /* Configure SPI3 pins: WS -------------------------------------------*/ |
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327 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15; |
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328 GPIO_Init(GPIOA, &GPIO_InitStructure); |
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329 |
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330 #endif /* USE_STM3210C_EVAL */ |
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331 } |
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332 |
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333 /** |
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334 * @brief Configure the nested vectored interrupt controller. |
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335 * @param None |
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336 * @retval None |
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337 */ |
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338 void NVIC_Configuration(void) |
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339 { |
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340 NVIC_InitTypeDef NVIC_InitStructure; |
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341 |
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342 NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); |
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343 |
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344 /* SPI3 IRQ Channel configuration */ |
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345 NVIC_InitStructure.NVIC_IRQChannel = SPI3_IRQn; |
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346 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1; |
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347 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; |
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348 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; |
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349 NVIC_Init(&NVIC_InitStructure); |
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350 |
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351 /* SPI2 IRQ channel configuration */ |
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352 NVIC_InitStructure.NVIC_IRQChannel = SPI2_IRQn; |
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353 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; |
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354 NVIC_Init(&NVIC_InitStructure); |
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355 } |
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356 |
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357 /** |
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358 * @brief Compares two buffers. |
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359 * @param pBuffer1, pBuffer2: buffers to be compared. |
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360 * @param BufferLength: buffer's length |
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361 * @retval PASSED: pBuffer1 identical to pBuffer2 |
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362 * FAILED: pBuffer1 differs from pBuffer2 |
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363 */ |
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364 TestStatus Buffercmp(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength) |
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365 { |
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366 while (BufferLength--) |
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367 { |
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368 if (*pBuffer1 != *pBuffer2) |
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369 { |
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370 return FAILED; |
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371 } |
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372 |
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373 pBuffer1++; |
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374 pBuffer2++; |
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375 } |
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376 |
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377 return PASSED; |
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378 } |
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379 |
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380 /** |
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381 * @brief Compares two buffers in 24 bits data format. |
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382 * @param pBuffer1, pBuffer2: buffers to be compared. |
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383 * @param BufferLength: buffer's length |
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384 * @retval PASSED: pBuffer1 identical to pBuffer2 |
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385 * FAILED: pBuffer1 differs from pBuffer2 |
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386 */ |
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387 TestStatus Buffercmp24bits(uint16_t* pBuffer1, uint16_t* pBuffer2, uint16_t BufferLength) |
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388 { |
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389 while (BufferLength--) |
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390 { |
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391 if (*pBuffer1 != *pBuffer2) |
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392 { |
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393 if (*pBuffer1 != (*pBuffer2 & 0xFF00)) |
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394 { |
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395 return FAILED; |
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396 } |
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397 } |
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398 |
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399 pBuffer1++; |
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400 pBuffer2++; |
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401 } |
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402 |
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403 return PASSED; |
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404 } |
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405 |
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406 #ifdef USE_FULL_ASSERT |
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407 |
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408 /** |
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409 * @brief Reports the name of the source file and the source line number |
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410 * where the assert_param error has occurred. |
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411 * @param file: pointer to the source file name |
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412 * @param line: assert_param error line source number |
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413 * @retval None |
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414 */ |
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415 void assert_failed(uint8_t* file, uint32_t line) |
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416 { |
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417 /* User can add his own implementation to report the file name and line number, |
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418 ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */ |
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419 |
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420 /* Infinite loop */ |
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421 while (1) |
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422 {} |
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423 } |
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424 |
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425 #endif |
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426 |
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427 /** |
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428 * @} |
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429 */ |
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430 |
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431 /** |
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432 * @} |
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433 */ |
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434 |
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435 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/ |