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annotate Common/Drivers/STM32F4xx/Include/system_stm32f4xx.h @ 916:4832981f9af8 Evo_2_23

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External sensor UART: Switch to DMA TX transfers: The previous version used polling tx function to transfer data. Because of the short command length of the protocols supported this was no big issue. New protocolls (like GNSS) have longer command sequence which have an impact to the program flow. That's why the implementation has been changed to DMA transmission.
author Ideenmodellierer
date Mon, 28 Oct 2024 20:34:58 +0100
parents 4e10a3e087a1
children
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1 /**
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2 ******************************************************************************
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3 * @file system_stm32f4xx.h
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4 * @author MCD Application Team
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5 * @brief CMSIS Cortex-M4 Device System Source File for STM32F4xx devices.
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6 ******************************************************************************
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7 * @attention
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8 *
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9 * <h2><center>&copy; COPYRIGHT(c) 2017 STMicroelectronics</center></h2>
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10 *
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11 * Redistribution and use in source and binary forms, with or without modification,
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12 * are permitted provided that the following conditions are met:
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13 * 1. Redistributions of source code must retain the above copyright notice,
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14 * this list of conditions and the following disclaimer.
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15 * 2. Redistributions in binary form must reproduce the above copyright notice,
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16 * this list of conditions and the following disclaimer in the documentation
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17 * and/or other materials provided with the distribution.
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18 * 3. Neither the name of STMicroelectronics nor the names of its contributors
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19 * may be used to endorse or promote products derived from this software
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20 * without specific prior written permission.
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21 *
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22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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25 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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32 *
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33 ******************************************************************************
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34 */
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35
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36 /** @addtogroup CMSIS
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37 * @{
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38 */
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39
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40 /** @addtogroup stm32f4xx_system
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41 * @{
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42 */
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43
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44 /**
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45 * @brief Define to prevent recursive inclusion
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46 */
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47 #ifndef __SYSTEM_STM32F4XX_H
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48 #define __SYSTEM_STM32F4XX_H
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49
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50 #ifdef __cplusplus
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51 extern "C" {
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52 #endif
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53
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54 /** @addtogroup STM32F4xx_System_Includes
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55 * @{
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56 */
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57
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58 /**
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59 * @}
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60 */
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61
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62
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63 /** @addtogroup STM32F4xx_System_Exported_types
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64 * @{
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65 */
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66 /* This variable is updated in three ways:
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67 1) by calling CMSIS function SystemCoreClockUpdate()
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68 2) by calling HAL API function HAL_RCC_GetSysClockFreq()
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69 3) each time HAL_RCC_ClockConfig() is called to configure the system clock frequency
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70 Note: If you use this function to configure the system clock; then there
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71 is no need to call the 2 first functions listed above, since SystemCoreClock
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72 variable is updated automatically.
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73 */
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74 extern uint32_t SystemCoreClock; /*!< System Clock Frequency (Core Clock) */
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75
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76 extern const uint8_t APBPrescTable[8]; /*!< APB prescalers table values */
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77
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78 /**
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79 * @}
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80 */
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81
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82 /** @addtogroup STM32F4xx_System_Exported_Constants
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83 * @{
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84 */
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85
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86 /**
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87 * @}
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88 */
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89
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90 /** @addtogroup STM32F4xx_System_Exported_Macros
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91 * @{
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92 */
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93
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94 /**
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95 * @}
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96 */
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97
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98 /** @addtogroup STM32F4xx_System_Exported_Functions
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99 * @{
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100 */
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101
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102 extern void SystemInit(void);
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103 extern void SystemCoreClockUpdate(void);
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104 /**
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105 * @}
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106 */
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107
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108 #ifdef __cplusplus
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109 }
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110 #endif
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111
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112 #endif /*__SYSTEM_STM32F4XX_H */
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113
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114 /**
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115 * @}
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116 */
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117
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118 /**
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119 * @}
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120 */
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121 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/