annotate OtherSources/data_exchange_main_mini.c @ 131:f35e53ef04e0 FlipDisplay

Update of configuration and projectfiles to support new library folder structure
author Ideenmodellierer
date Sun, 17 Feb 2019 21:29:38 +0100
parents 7801c5d8a562
children
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1 /**
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2 ******************************************************************************
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3 * @file data_exchange_main.c
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4 * @author heinrichs weikamp gmbh
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5 * @date 13-Oct-2014
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6 * @version V0.0.2
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7 * @since 27-May-2015
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8
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9 * @brief Communication with the second CPU == RTE system
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10 *
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11 @verbatim
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12 ==============================================================================
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13 ##### How to use #####
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14 ==============================================================================
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15
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16 ==============================================================================
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17 ##### Device Data #####
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18 ==============================================================================
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19
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20 main CPU always sends the device data info that it has at the moment
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21
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22 on start it is INT32_MIN, INT32_MAX and 0
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23 as initialized in data_central.c variable declaration
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24
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25 second small CPU gets request to send its device data
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26
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27 on receiption the data is merged with the data in externLogbookFlash,
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28 stored on the externLogbookFlash and from now on send to small CPU
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29
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30 @endverbatim
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31 ******************************************************************************
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32 * @attention
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33 *
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34 * <h2><center>&copy; COPYRIGHT(c) 2014 heinrichs weikamp</center></h2>
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35 *
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36 ******************************************************************************
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37 */
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38
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39 /* Includes ------------------------------------------------------------------*/
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40 #include <string.h> // for memcopy
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41 #include "stm32f4xx_hal.h"
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42 #include "stdio.h"
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43 #include "ostc.h"
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44 #include "data_central.h"
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45 #include "data_exchange_main.h"
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46 #include "base.h"
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47 #include "externLogbookFlash.h"
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48
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49
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50 /* Expoted variables --------------------------------------------------------*/
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51
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52 /* Private variables ---------------------------------------------------------*/
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53
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54 SDataReceiveFromMaster dataOut;
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55 SDataExchangeSlaveToMaster dataIn;
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56
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57 uint8_t data_old__lost_connection_to_slave_counter_temp = 0;
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58 /* Private types -------------------------------------------------------------*/
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59
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60 uint8_t DataEX_check_header_and_footer_ok(void);
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61 void DataEX_control_connection_while_asking_for_sleep(void);
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62
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63 /* Exported functions --------------------------------------------------------*/
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64
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65 uint8_t DataEX_call(void)
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66 {
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67 DataEX_control_connection_while_asking_for_sleep();
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68
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69 for(int i=0;i<EXCHANGE_BUFFERSIZE;i++)
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70 *(uint8_t *)(((uint32_t)&dataOut) + i) = 0;
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71
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72 dataOut.mode = MODE_SHUTDOWN;
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73
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74 dataOut.header.checkCode[0] = 0xBB;
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75 dataOut.header.checkCode[1] = 0x01;
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76 dataOut.header.checkCode[2] = 0x01;
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77 dataOut.header.checkCode[3] = 0xBB;
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78
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79 dataOut.footer.checkCode[0] = 0xF4;
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80 dataOut.footer.checkCode[1] = 0xF3;
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81 dataOut.footer.checkCode[2] = 0xF2;
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82 dataOut.footer.checkCode[3] = 0xF1;
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83
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84 HAL_GPIO_WritePin(SMALLCPU_CSB_GPIO_PORT,SMALLCPU_CSB_PIN,GPIO_PIN_SET);
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85 delayMicros(10);
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86
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87 if(data_old__lost_connection_to_slave_counter_temp >= 3)
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88 {
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89 data_old__lost_connection_to_slave_counter_temp = 0;
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90 }
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91 else
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92 {
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93 HAL_GPIO_WritePin(SMALLCPU_CSB_GPIO_PORT,SMALLCPU_CSB_PIN,GPIO_PIN_RESET);
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94 }
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95
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96 HAL_SPI_TransmitReceive_DMA(&cpu2DmaSpi, (uint8_t *)&dataOut, (uint8_t *)&dataIn, EXCHANGE_BUFFERSIZE+1);
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97 return 1;
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98 }
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99
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100
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101 void DataEX_control_connection_while_asking_for_sleep(void)
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102 {
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103 if(!DataEX_check_header_and_footer_ok())
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104 {
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105 data_old__lost_connection_to_slave_counter_temp += 1;
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106 }
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107 }
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108
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109 uint8_t DataEX_check_header_and_footer_ok(void)
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110 {
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111 if(dataIn.header.checkCode[0] != 0xA1)
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112 return 0;
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113 if(dataIn.header.checkCode[1] != 0xA2)
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114 return 0;
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115 if(dataIn.header.checkCode[2] != 0xA3)
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116 return 0;
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117 if(dataIn.header.checkCode[3] != 0xA4)
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118 return 0;
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119 if(dataIn.footer.checkCode[0] != 0xE1)
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120 return 0;
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121 if(dataIn.footer.checkCode[1] != 0xE2)
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122 return 0;
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123 if(dataIn.footer.checkCode[2] != 0xE3)
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124 return 0;
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125 if(dataIn.footer.checkCode[3] != 0xE4)
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126 return 0;
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127
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128 return 1;
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129 }
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130