Sat, 14 Mar 2020 13:07:02 +0100
Version 0.2.2 Changed to use a permanent network and WiFi connection. Removed three mainloop stages. Removed MQTT sequence counter that was not used. Update WiFi rssi status during eacht measure cycle. Changed FreeRTOS schedulng to 500 Hz.
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Initial import of the CO2 meter application.
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1 | /** |
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2 | * @file config.c |
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3 | * @brief The 'co2meter' configuration data. These are stored in the |
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4 | * spiffs filesystem in a flash partition. |
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5 | */ |
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6 | |
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7 | #include "config.h" |
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8 | |
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9 | static const char *TAG = "config"; |
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10 | |
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11 | unit_t units[3]; ///< Pressure test units |
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12 | SemaphoreHandle_t xSemaphoreUnits = NULL; ///< Semaphore Units records |
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13 | |
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14 | |
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15 | |
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16 | void write_config() { |
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17 | uint8_t *dst = (uint8_t *)&config; |
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18 | FILE *f = fopen("/spiffs/etc/config.conf", "w+"); |
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19 | |
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20 | if (f == NULL) { |
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21 | ESP_LOGE(TAG, "write /spiffs/etc/config.conf failed"); |
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22 | return; |
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23 | } |
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24 | |
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25 | size_t bytes = fwrite(dst, 1, sizeof(config), f); |
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26 | fclose(f); |
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27 | if (bytes != sizeof(config)) { |
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28 | ESP_LOGE(TAG, "/spiffs/etc/config.conf written %d/%d bytes", bytes, sizeof(config)); |
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29 | } else { |
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30 | ESP_LOGI(TAG, "/spiffs/etc/config.conf written %d bytes", bytes); |
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31 | } |
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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 | void read_config() { |
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37 | uint8_t *dst; |
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38 | uint8_t mac_addr[8] = {0}; |
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39 | FILE *f = fopen("/spiffs/etc/config.conf", "r"); |
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40 | |
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41 | if (f == NULL) { |
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42 | // No configuration yet, create it. |
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43 | esp_efuse_mac_get_default(mac_addr); |
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44 | config.Version = 1; |
1 | 45 | sprintf(config.hostname, "co2meter-%02x%02x%02x", mac_addr[3], mac_addr[4], mac_addr[5]); |
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46 | config.mqtt_server[0] = '\0'; |
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47 | config.mqtt_port = 1883; |
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48 | config.mqtt_user[0] = '\0'; |
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49 | config.mqtt_pwd[0] = '\0'; |
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50 | sprintf(config.uuid, "c0ffeeee-dead-beef-cafe-%02x%02x%02x%02x%02x%02x", |
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51 | mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]); |
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52 | write_config(); |
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53 | } else { |
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54 | dst = (uint8_t*)&config; |
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55 | size_t bytes = fread(dst, 1, sizeof(config), f); |
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56 | fclose(f); |
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57 | ESP_LOGI(TAG, "/spiffs/etc/config.conf read %d bytes", bytes); |
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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 | void write_units() { |
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64 | uint8_t *dst = (uint8_t *)&units; |
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65 | FILE *f = fopen("/spiffs/etc/units.conf", "w+"); |
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66 | |
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67 | if (f == NULL) { |
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68 | ESP_LOGE(TAG, "write /spiffs/etc/units.conf failed"); |
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69 | return; |
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70 | } |
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71 | size_t bytes = fwrite(dst, 1, sizeof(units), f); |
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72 | fclose(f); |
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73 | if (bytes != sizeof(units)) { |
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74 | ESP_LOGE(TAG, "/spiffs/etc/units.conf written %d/%d bytes", bytes, sizeof(units)); |
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75 | } else { |
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76 | ESP_LOGI(TAG, "/spiffs/etc/units.conf written %d bytes", bytes); |
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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 | void read_units() { |
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83 | uint8_t *dst; |
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84 | uint8_t mac_addr[8] = {0}; |
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85 | FILE *f = fopen("/spiffs/etc/units.conf", "r"); |
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86 | |
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87 | if (f == NULL) { |
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88 | // No units yet, create them. |
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89 | esp_efuse_mac_get_default(mac_addr); |
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90 | for (int i = 0; i < 3; i++) { |
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91 | memset(&units[i], 0, sizeof(unit_t)); |
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92 | sprintf(units[i].uuid, "c0ffeeee-dead-beef-caf%d-%02x%02x%02x%02x%02x%02x", i & 3, |
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93 | mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]); |
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94 | sprintf(units[i].alias, "unit%d", (i + 1) & 3); |
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95 | units[i].pressure_zero = 110; |
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96 | } |
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97 | write_units(); |
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98 | } else { |
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99 | dst = (uint8_t*)&units; |
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100 | size_t bytes = fread(dst, 1, sizeof(units), f); |
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101 | fclose(f); |
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102 | ESP_LOGI(TAG, "/spiffs/etc/units.conf read %d bytes", bytes); |
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103 | for (int i = 0; i < 3; i++) |
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104 | ESP_LOGI(TAG, "%d %s %d %4d %3d", i, units[i].alias, units[i].pressure_channel, units[i].pressure_voltage, units[i].pressure_zero); |
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105 | } |
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106 | } |
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107 | |
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108 | |
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109 | |
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110 | int add_station(uint8_t *SSID, uint8_t *Password) |
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111 | { |
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112 | FILE *f; |
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113 | uint8_t *dst = (uint8_t *)&wifiStation; |
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114 | |
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115 | if (read_station(SSID) >= 0) { |
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116 | ESP_LOGE(TAG, "add_station %s already excists", SSID); |
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117 | return -1; |
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118 | } |
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119 | |
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120 | f = fopen("/spiffs/etc/stations.conf", "a+"); |
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121 | if (f == NULL) { |
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122 | ESP_LOGE(TAG, "write /spiffs/etc/stations.conf failed"); |
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123 | return -1; |
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124 | } |
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125 | memset(dst, 0, sizeof(wifiStation)); |
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126 | sprintf(wifiStation.SSID, "%s", (char *)SSID); |
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127 | sprintf(wifiStation.Password, "%s", (char *)Password); |
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128 | fwrite(dst, 1, sizeof(wifiStation), f); |
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129 | fclose(f); |
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130 | |
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131 | ESP_LOGI(TAG, "add_station %s record: %d", (char *)SSID, read_station(SSID)); |
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132 | /* Return the record number */ |
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133 | return read_station(SSID); |
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134 | } |
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135 | |
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136 | |
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137 | |
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138 | int read_station(uint8_t *SSID) |
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139 | { |
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140 | uint8_t *dst = (uint8_t *)&wifiStation; |
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141 | static int rc; |
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142 | FILE *f; |
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143 | size_t bytes; |
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144 | |
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145 | if ((SSID == NULL) || (strlen((char *)SSID) == 0)) { |
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146 | ESP_LOGI(TAG, "read_station(NULL)"); |
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147 | return -1; |
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148 | } |
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149 | |
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150 | memset(dst, 0, sizeof(wifiStation)); |
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151 | f = fopen("/spiffs/etc/stations.conf", "r+"); |
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152 | if (f == NULL) { |
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153 | f = fopen("/spiffs/etc/stations.conf", "w+"); |
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154 | fclose(f); |
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155 | ESP_LOGI(TAG, "/spiffs/etc/stations.conf created, return -1"); |
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156 | return -1; |
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157 | } |
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158 | |
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159 | rc = 0; |
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160 | fseek(f, 0, SEEK_SET); |
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161 | |
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162 | while (1) { |
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163 | bytes = fread(dst, 1, sizeof(wifiStation), f); |
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164 | if (bytes < sizeof(wifiStation)) { |
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165 | fclose(f); |
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166 | memset(dst, 0, sizeof(wifiStation)); |
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167 | return -1; |
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168 | } |
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169 | if (strcmp(wifiStation.SSID, (char *)SSID) == 0) { |
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170 | // Fount it |
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171 | fclose(f); |
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172 | return rc; |
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173 | } |
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174 | rc++; |
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175 | } |
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176 | return -1; |
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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 | void remove_station(uint8_t *SSID) |
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182 | { |
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183 | FILE *n, *o; |
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184 | uint8_t *dst; |
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185 | size_t bytes; |
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186 | |
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187 | n = fopen("/spiffs/etc/stations.new", "a"); |
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188 | if (n == NULL) { |
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189 | ESP_LOGE(TAG, "cannot create /spiffs/etc/stations.new"); |
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190 | return; |
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191 | } |
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192 | o = fopen("/spiffs/etc/stations.conf", "r"); |
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193 | if (o == NULL) { |
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194 | ESP_LOGE(TAG, "cannot open spiffs/etc/stations.conf for reading"); |
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195 | fclose(n); |
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196 | return; |
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197 | } |
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198 | |
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199 | dst = (uint8_t*)&wifiStation; |
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200 | while (true) { |
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201 | bytes = fread(dst, 1, sizeof(wifiStation), o); |
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202 | if (bytes == 0) |
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203 | break; |
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204 | |
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205 | if ((strcmp((char *)SSID, wifiStation.SSID) == 0) || (strlen(wifiStation.SSID) == 0)) { |
33 | 206 | ESP_LOGI(TAG, "remove station %s", (char *)SSID); |
0
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207 | } else { |
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208 | fwrite(dst, 1, sizeof(wifiStation), n); |
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209 | } |
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210 | } |
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211 | fclose(o); |
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212 | fclose(n); |
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213 | |
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214 | rename("/spiffs/etc/stations.conf", "/spiffs/etc/stations.old"); |
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215 | rename("/spiffs/etc/stations.new", "/spiffs/etc/stations.conf"); |
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216 | unlink("/spiffs/etc/stations.old"); |
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217 | } |
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218 |