119 lines
4.1 KiB
C++
119 lines
4.1 KiB
C++
/* configmanager persists runtime configuration using NVRAM of ESP32*/
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#include "globals.h"
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#include "configmanager.h"
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// Local logging tag
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static const char TAG[] = __FILE__;
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#define PAYLOADMASK \
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((GPS_DATA | ALARM_DATA | MEMS_DATA | COUNT_DATA | SENSOR1_DATA | \
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SENSOR2_DATA | SENSOR3_DATA) & \
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(~BATT_DATA))
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// namespace for device runtime preferences
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#define DEVCONFIG "paxcntcfg"
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Preferences nvram;
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static const char cfgMagicBytes[] = {0x21, 0x76, 0x87, 0x32, 0xf3};
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static const size_t cfgLen = sizeof(cfg), cfgLen2 = sizeof(cfgMagicBytes);
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static char buffer[cfgLen + cfgLen2];
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// populate runtime config with factory settings
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static void defaultConfig(configData_t *myconfig) {
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char version[10];
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snprintf(version, 10, "%-10s", PROGVERSION);
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// factory settings
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myconfig->loradr = LORADRDEFAULT; // 0-15, lora datarate, see paxcounter.conf
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myconfig->txpower = LORATXPOWDEFAULT; // 0-15, lora tx power
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myconfig->adrmode = 1; // 0=disabled, 1=enabled
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myconfig->screensaver = 0; // 0=disabled, 1=enabled
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myconfig->screenon = 1; // 0=disabled, 1=enabled
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myconfig->countermode =
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COUNTERMODE; // 0=cyclic, 1=cumulative, 2=cyclic confirmed
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myconfig->rssilimit = 0; // threshold for rssilimiter, negative value!
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myconfig->sendcycle = SENDCYCLE; // payload send cycle [seconds/2]
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myconfig->wifichancycle =
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WIFI_CHANNEL_SWITCH_INTERVAL; // wifi channel switch cycle [seconds/100]
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myconfig->blescantime =
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BLESCANINTERVAL /
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10; // BT channel scan cycle [seconds/100], default 1 (= 10ms)
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myconfig->blescan = 1; // 0=disabled, 1=enabled
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myconfig->wifiscan = 1; // 0=disabled, 1=enabled
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myconfig->wifiant = 0; // 0=internal, 1=external (for LoPy/LoPy4)
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myconfig->vendorfilter = VENDORFILTER; // 0=disabled, 1=enabled
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myconfig->rgblum = RGBLUMINOSITY; // RGB Led luminosity (0..100%)
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myconfig->monitormode = 0; // 0=disabled, 1=enabled
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myconfig->payloadmask = PAYLOADMASK; // all payload switched on
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memcpy(myconfig->version, version, 10); // Firmware version [exactly 10 chars]
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#ifdef HAS_BME680
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// initial BSEC state for BME680 sensor
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myconfig->bsecstate[BSEC_MAX_STATE_BLOB_SIZE] = {0};
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#endif
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}
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// save current configuration from RAM to NVRAM
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void saveConfig(bool erase) {
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ESP_LOGI(TAG, "Storing settings to NVRAM...");
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nvram.begin(DEVCONFIG, false);
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if (erase) {
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ESP_LOGI(TAG, "Resetting device to factory settings");
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nvram.clear();
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defaultConfig(&cfg);
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}
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// Copy device runtime config cfg to byte array, padding it with magicBytes
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memcpy(buffer, &cfg, cfgLen);
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memcpy(buffer + cfgLen, &cfgMagicBytes, cfgLen2);
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// save byte array to NVRAM, padding with cfg magicbyes
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if (nvram.putBytes(DEVCONFIG, buffer, cfgLen + cfgLen2))
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ESP_LOGI(TAG, "Device settings saved");
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else
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ESP_LOGE(TAG, "NVRAM Error, device settings not saved");
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nvram.end();
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}
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// load configuration from NVRAM into RAM and make it current
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bool loadConfig() {
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ESP_LOGI(TAG, "Loading device runtime configuration from NVRAM...");
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if (!nvram.begin(DEVCONFIG, true)) {
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ESP_LOGW(TAG, "NVRAM initialized, device starts with factory settings");
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eraseConfig();
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return true;
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} else {
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// simple check that runtime config data matches
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if (nvram.getBytesLength(DEVCONFIG) != (cfgLen + cfgLen2)) {
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ESP_LOGE(TAG, "configuration invalid");
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return false;
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} else {
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// load device runtime config from nvram and copy it to byte array
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nvram.getBytes(DEVCONFIG, buffer, cfgLen + cfgLen2);
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nvram.end();
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// validate configuration by checking magic bytes at end of array
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if (memcmp(buffer + cfgLen, &cfgMagicBytes, cfgLen2) != 0) {
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ESP_LOGW(TAG, "No configuration found");
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return false;
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} else {
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// copy byte array into runtime cfg struct
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memcpy(&cfg, buffer, cfgLen);
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ESP_LOGI(TAG, "Runtime configuration loaded");
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return true;
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}
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}
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}
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}
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void eraseConfig(void) { saveConfig(true); }
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