sanitized time handling code
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@ -17,7 +17,6 @@
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#endif
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void doHousekeeping(void);
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void do_timesync(void);
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uint64_t uptime(void);
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void reset_counters(void);
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int redirect_log(const char *fmt, va_list args);
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@ -16,5 +16,6 @@ extern TaskHandle_t GpsTask;
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int gps_init(void);
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void gps_read(void);
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void gps_loop(void *pvParameters);
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time_t get_gpstime(void);
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#endif
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@ -30,7 +30,7 @@ description = Paxcounter is a proof-of-concept ESP32 device for metering passeng
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[common]
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; for release_version use max. 10 chars total, use any decimal format like "a.b.c"
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release_version = 1.7.14
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release_version = 1.7.141
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; DEBUG LEVEL: For production run set to 0, otherwise device will leak RAM while running!
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; 0=None, 1=Error, 2=Warn, 3=Info, 4=Debug, 5=Verbose
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debug_level = 3
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@ -7,8 +7,8 @@
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// Local logging tag
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static const char TAG[] = "main";
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uint32_t userUTCTime; // Seconds since the UTC epoch
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unsigned long nextTimeSync = millis();
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time_t userUTCTime; // Seconds since the UTC epoch
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unsigned long nextLoraTimeSync = millis();
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// do all housekeeping
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void doHousekeeping() {
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@ -23,12 +23,14 @@ void doHousekeeping() {
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spi_housekeeping();
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lora_housekeeping();
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// time sync once per TIME_SYNC_INTERVAL
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#ifdef TIME_SYNC_INTERVAL
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if (millis() >= nextTimeSync) {
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nextTimeSync =
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millis() + TIME_SYNC_INTERVAL * 60000; // set up next time sync period
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do_timesync();
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// do cyclic time sync with LORA network
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#ifdef TIME_SYNC_INTERVAL_LORA
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if (millis() >= nextLoraTimeSync) {
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nextLoraTimeSync = millis() + TIME_SYNC_INTERVAL_LORA *
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60000; // set up next time sync period
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// Schedule a network time sync request at the next possible time
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LMIC_requestNetworkTime(user_request_network_time_callback, &userUTCTime);
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ESP_LOGI(TAG, "LORAWAN time request scheduled");
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}
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#endif
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@ -120,37 +122,6 @@ void reset_counters() {
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macs_ble = 0;
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}
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void do_timesync() {
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#ifdef TIME_SYNC_INTERVAL
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// set system time to time source GPS, if we have valid gps time
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#ifdef HAS_GPS
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if (gps.time.isValid()) {
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setTime(gps.time.hour(), gps.time.minute(), gps.time.second(),
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gps.date.day(), gps.date.month(), gps.date.year());
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// set RTC time to time source GPS, if RTC is present
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#ifdef HAS_RTC
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if (!set_rtctime(RtcDateTime(now())))
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ESP_LOGE(TAG, "RTC set time failure");
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#endif
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time_t tt = myTZ.toLocal(now());
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ESP_LOGI(TAG, "GPS has set system time to %02d/%02d/%d %02d:%02d:%02d",
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month(tt), day(tt), year(tt), hour(tt), minute(tt), second(tt));
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return;
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} else {
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ESP_LOGI(TAG, "No valid GPS time");
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}
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// set system time to time source LoRa Network, if network supports DevTimeReq
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#elif defined LMIC_ENABLE_DeviceTimeReq
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// Schedule a network time sync request at the next possible time
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LMIC_requestNetworkTime(user_request_network_time_callback, &userUTCTime);
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ESP_LOGI(TAG, "Network time request scheduled");
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#endif // HAS_GPS
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#endif // TIME_SYNC_INTERVAL
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} // do_timesync()
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#ifndef VERBOSE
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int redirect_log(const char *fmt, va_list args) {
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// do nothing
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@ -53,6 +53,32 @@ void gps_read() {
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gps.passedChecksum(), gps.failedChecksum(), gps.sentencesWithFix());
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}
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// helper function to convert gps date/time into time_t
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time_t tmConvert_t(uint16_t YYYY, uint8_t MM, uint8_t DD, uint8_t hh,
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uint8_t mm, uint8_t ss) {
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tmElements_t tm;
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tm.Year = YYYY - 1970; // note year argument is offset from 1970 in time.h
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tm.Month = MM;
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tm.Day = DD;
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tm.Hour = hh;
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tm.Minute = mm;
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tm.Second = ss;
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return makeTime(tm);
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}
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// function to fetch current time from gps
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time_t get_gpstime(void) {
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// never call now() in this function, this would cause a recursion!
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time_t t = 0;
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if (gps.time.age() < 1500) {
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t = tmConvert_t(gps.date.year(), gps.date.month(), gps.date.day(),
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gps.time.hour(), gps.time.minute(), gps.time.second());
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} else {
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ESP_LOGW(TAG, "GPS has no confident time");
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}
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return t;
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} // get_gpstime()
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// GPS serial feed FreeRTos Task
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void gps_loop(void *pvParameters) {
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@ -41,7 +41,7 @@
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#define BOARD_HAS_PSRAM // use extra 4MB extern RAM
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#define HAS_GPS 1 // use if board has GPS
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#define GPS_SERIAL 9600, SERIAL_8N1, GPIO_NUM_12, GPIO_NUM_15 // UBlox NEO 6M or 7M with default configuration
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#define GPS_SERIAL 9600, SERIAL_8N1, GPIO_NUM_17, GPIO_NUM_16 // UBlox NEO 6M or 7M with default configuration
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// Pins for I2C interface of OLED Display
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#define MY_OLED_SDA (4)
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@ -50,6 +50,10 @@
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// Pins for on board DS3231 RTC chip
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#define HAS_RTC MY_OLED_SDA, MY_OLED_SCL // SDA, SCL
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#define RTC_INT GPIO_NUM_34 // interrupt input from rtc
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// Settings for IF482 interface
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#define HAS_IF482 9600, SERIAL_7E1, GPIO_NUM_12, GPIO_NUM_14 // IF482 serial port parameters
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// Pins for LORA chip SPI interface, reset line and interrupt lines
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#define LORA_SCK (5)
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@ -453,7 +453,7 @@ void user_request_network_time_callback(void *pVoidUserUTCTime,
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uint32_t requestDelaySec = osticks2ms(ticksNow - ticksRequestSent) / 1000;
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*pUserUTCTime += requestDelaySec;
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// Update system time with time read from the network
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// Update system time with time read from the network
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setTime(*pUserUTCTime);
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#ifdef HAS_RTC
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if (!set_rtctime(*pUserUTCTime))
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18
src/main.cpp
18
src/main.cpp
@ -187,7 +187,13 @@ void setup() {
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#ifdef HAS_RTC
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strcat_P(features, " RTC");
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assert(rtc_init());
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sync_rtctime();
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setSyncProvider(&get_rtctime);
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if (timeStatus() != timeSet)
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ESP_LOGI(TAG, "Unable to sync system time with RTC");
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else
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ESP_LOGI(TAG, "RTC has set the system time");
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setSyncInterval(TIME_SYNC_INTERVAL_RTC);
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#ifdef HAS_IF482
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strcat_P(features, " IF482");
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assert(if482_init());
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@ -200,6 +206,7 @@ void setup() {
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&IF482Task, // task handle
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0); // CPU core
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#endif // HAS_IF482
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#endif // HAS_RTC
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// initialize wifi antenna
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@ -411,6 +418,15 @@ void setup() {
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#endif
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#endif // HAS_BUTTON
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#ifdef HAS_GPS
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setSyncProvider(&get_gpstime);
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if (timeStatus() != timeSet)
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ESP_LOGI(TAG, "Unable to sync system time with GPS");
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else
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ESP_LOGI(TAG, "GPS has set the system time");
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setSyncInterval(TIME_SYNC_INTERVAL_GPS);
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#endif
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// start RTC interrupt
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#if defined HAS_IF482 && defined HAS_RTC
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// setup external interupt for active low RTC INT pin
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@ -82,9 +82,11 @@
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#define RESPONSE_TIMEOUT_MS 60000 // firmware binary server connection timeout [milliseconds]
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// settings for syncing time of node and external time sources
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#define TIME_SYNC_INTERVAL 60 // sync time each ... minutes with external source [default = 60], comment out means off
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#define TIME_SYNC_INTERVAL_GPS 5 // sync time each ... minutes with GPS [default = 5], comment out means off
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#define TIME_SYNC_INTERVAL_RTC 5 // sync time each ... minutes with RTC [default = 5], comment out means off
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//#define TIME_SYNC_INTERVAL_LORA 60 // sync time each ... minutes with LORA network [default = 60], comment out means off
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#define IF482_OFFSET 984 // 1sec minus IF482 serial transmit time [ms]: e.g. 9 bits * 17 bytes * 1/9600 bps = 16ms
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// time zone, see https://github.com/JChristensen/Timezone/blob/master/examples/WorldClock/WorldClock.ino
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#define DAYLIGHT_TIME {"CEST", Last, Sun, Mar, 2, 120} // Central European Summer Time
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#define STANDARD_TIME {"CET ", Last, Sun, Oct, 3, 60} // Central European Standard Time
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@ -62,11 +62,11 @@ error:
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} // rtc_init()
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int set_rtctime(uint32_t UTCTime) {
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int set_rtctime(uint32_t t) {
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// return = 0 -> error / return = 1 -> success
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// block i2c bus access
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if (I2C_MUTEX_LOCK()) {
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Rtc.SetDateTime(RtcDateTime(UTCTime));
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Rtc.SetDateTime(RtcDateTime(t));
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I2C_MUTEX_UNLOCK(); // release i2c bus access
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return 1;
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}
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@ -86,44 +86,20 @@ int set_rtctime(RtcDateTime t) {
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time_t get_rtctime(void) {
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// never call now() in this function, this would cause a recursion!
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time_t tt = 0;
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time_t t = 0;
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// block i2c bus access
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if (I2C_MUTEX_LOCK()) {
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if (!Rtc.IsDateTimeValid()) {
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ESP_LOGW(TAG, "RTC has no confident time");
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if (Rtc.IsDateTimeValid()) {
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RtcDateTime tt = Rtc.GetDateTime();
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t = tt.Epoch32Time();
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} else {
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RtcDateTime t = Rtc.GetDateTime();
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tt = t.Epoch32Time();
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ESP_LOGW(TAG, "RTC has no confident time");
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}
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I2C_MUTEX_UNLOCK(); // release i2c bus access
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return tt;
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}
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return tt;
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return t;
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} // get_rtctime()
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void sync_rtctime(void) {
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if (timeStatus() != timeSet) { // do we need time sync?
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time_t t = get_rtctime();
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if (t) { // have we got a valid time from RTC?
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setTime(t);
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time_t tt = myTZ.toLocal(t);
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ESP_LOGI(TAG, "RTC has set system time to %02d/%02d/%d %02d:%02d:%02d",
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month(tt), day(tt), year(tt), hour(tt), minute(tt), second(tt));
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} else
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ESP_LOGW(TAG, "System time was not synced");
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}
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#ifdef TIME_SYNC_INTERVAL_RTC
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setSyncProvider(&get_rtctime); // does not sync if callback function returns 0
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if (timeStatus() != timeSet)
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ESP_LOGI("Unable to sync with the RTC");
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else
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ESP_LOGI("RTC has set the system time");
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setSyncInterval(TIME_SYNC_INTERVAL_RTC);
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#endif
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} // sync_rtctime;
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float get_rtctemp(void) {
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// block i2c bus access
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if (I2C_MUTEX_LOCK()) {
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@ -132,6 +108,6 @@ float get_rtctemp(void) {
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return temp.AsFloatDegC();
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} // while
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return 0;
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} // get_rtc()
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} // get_rtctemp()
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#endif // HAS_RTC
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