time sync accuracy fixes
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6aba3c128b
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@ -389,7 +389,9 @@ Note: all settings are stored in NVRAM and will be reloaded when device starts.
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0x86 get time/date
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0x86 get time/date
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Device answers with it's local time/date (UTC Unix epoch) on Port 2.
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Device answers with it's local time/date (UTC Unix epoch) on Port 2:
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bytes 1..4 = local time/date in UTC epoch seconds
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byte 5 = bits 0..3 timeSource, bits 4..7 timeStatus
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0x87 set time/date
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0x87 set time/date
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@ -4,7 +4,7 @@
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#include "globals.h"
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#include "globals.h"
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#define IF482_FRAME_SIZE (17)
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#define IF482_FRAME_SIZE (17)
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#define IF482_SYNC_FIXUP (3) // calibration to fixup processing time [milliseconds]
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#define IF482_SYNC_FIXUP (2) // calibration to fixup processing time [milliseconds]
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String IRAM_ATTR IF482_Frame(time_t tt);
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String IRAM_ATTR IF482_Frame(time_t tt);
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@ -16,6 +16,8 @@
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#include "timekeeper.h"
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#include "timekeeper.h"
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void irqHandler(void *pvParameters);
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void irqHandler(void *pvParameters);
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int mask_user_IRQ();
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int unmask_user_IRQ();
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#ifdef HAS_DISPLAY
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#ifdef HAS_DISPLAY
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#include "display.h"
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#include "display.h"
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@ -1,9 +1,9 @@
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#ifndef _TIME_SYNC_LORASERVER_H
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#ifndef _TIMESYNC_H
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#define _TIME_SYNC_LORASERVER_H
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#define _TIMESYNC_H
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#include <chrono>
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#include <chrono>
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#include "globals.h"
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#include "globals.h"
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#include "timesync.h"
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#include "irqhandler.h"
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#include "timekeeper.h"
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#include "timekeeper.h"
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//#define TIME_SYNC_TRIGGER 100 // threshold for time sync [milliseconds]
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//#define TIME_SYNC_TRIGGER 100 // threshold for time sync [milliseconds]
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@ -18,15 +18,14 @@ void irqHandler(void *pvParameters) {
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&InterruptStatus, // Receives the notification value
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&InterruptStatus, // Receives the notification value
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portMAX_DELAY); // wait forever
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portMAX_DELAY); // wait forever
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// interrupt handler to be enabled?
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if (InterruptStatus & UNMASK_IRQ) // interrupt handler to be enabled?
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if (InterruptStatus & UNMASK_IRQ)
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mask_irq = false;
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mask_irq = false;
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else if (mask_irq)
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else if (mask_irq) // suppress processing if interrupt handler is disabled
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continue; // suppress processing if interrupt handler is disabled
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continue;
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else if (InterruptStatus & MASK_IRQ) { // interrupt handler to be disabled?
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// interrupt handler to be disabled?
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if (InterruptStatus & MASK_IRQ)
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mask_irq = true;
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mask_irq = true;
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continue;
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}
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// button pressed?
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// button pressed?
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#ifdef HAS_BUTTON
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#ifdef HAS_BUTTON
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@ -85,3 +84,16 @@ void IRAM_ATTR ButtonIRQ() {
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portYIELD_FROM_ISR();
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portYIELD_FROM_ISR();
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}
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}
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#endif
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#endif
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int mask_user_IRQ() {
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// begin of time critical section: lock I2C bus to ensure accurate timing
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if (!I2C_MUTEX_LOCK())
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return 1; // failure
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xTaskNotify(irqHandlerTask, MASK_IRQ, eSetBits);
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}
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int unmask_user_IRQ() {
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// end of time critical section: release I2C bus
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I2C_MUTEX_UNLOCK();
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xTaskNotify(irqHandlerTask, UNMASK_IRQ, eSetBits);
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}
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@ -495,8 +495,7 @@ void IRAM_ATTR user_request_network_time_callback(void *pVoidUserUTCTime,
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}
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}
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// begin of time critical section: lock I2C bus to ensure accurate timing
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// begin of time critical section: lock I2C bus to ensure accurate timing
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// don't move the mutex, will impact accuracy of time up to 1 sec!
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if (!mask_user_IRQ())
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if (!I2C_MUTEX_LOCK())
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return; // failure
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return; // failure
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// Update userUTCTime, considering the difference between the GPS and UTC
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// Update userUTCTime, considering the difference between the GPS and UTC
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@ -514,7 +513,7 @@ void IRAM_ATTR user_request_network_time_callback(void *pVoidUserUTCTime,
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setMyTime(*pUserUTCTime + requestDelaySec, 0);
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setMyTime(*pUserUTCTime + requestDelaySec, 0);
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// end of time critical section: release I2C bus
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// end of time critical section: release I2C bus
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I2C_MUTEX_UNLOCK();
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unmask_user_IRQ();
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} // user_request_network_time_callback
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} // user_request_network_time_callback
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#endif // TIME_SYNC_LORAWAN
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#endif // TIME_SYNC_LORAWAN
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@ -415,7 +415,6 @@ void setup() {
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!defined HAS_GPS && !defined HAS_RTC)
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!defined HAS_GPS && !defined HAS_RTC)
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#warning you did not specify a time source, time will not be synched
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#warning you did not specify a time source, time will not be synched
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#endif
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#endif
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#else
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// start pps timepulse
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// start pps timepulse
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ESP_LOGI(TAG, "Starting Timekeeper...");
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ESP_LOGI(TAG, "Starting Timekeeper...");
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assert(timepulse_init()); // setup timepulse
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assert(timepulse_init()); // setup timepulse
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@ -277,6 +277,7 @@ void get_time(uint8_t val[]) {
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ESP_LOGI(TAG, "Remote command: get time");
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ESP_LOGI(TAG, "Remote command: get time");
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payload.reset();
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payload.reset();
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payload.addTime(now());
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payload.addTime(now());
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payload.addByte(timeStatus() << 4 | timeSource);
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SendPayload(STATUSPORT, prio_high);
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SendPayload(STATUSPORT, prio_high);
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};
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};
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@ -175,9 +175,9 @@ TickType_t tx_Ticks(uint32_t framesize, unsigned long baud, uint32_t config,
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return round(txTime);
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return round(txTime);
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}
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}
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#if defined HAS_IF482 || defined HAS_DCF77
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#if (defined HAS_IF482 || defined HAS_DCF77)
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#if defined HAS_DCF77 && defined HAS_IF482
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#if (defined HAS_DCF77 && defined HAS_IF482)
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#error You must define at most one of IF482 or DCF77!
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#error You must define at most one of IF482 or DCF77!
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#endif
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#endif
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@ -9,7 +9,7 @@ algorithm in applications without granted license by the patent holder.
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*/
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*/
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#if(TIME_SYNC_LORASERVER)
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#if (TIME_SYNC_LORASERVER)
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#include "timesync.h"
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#include "timesync.h"
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@ -111,8 +111,7 @@ void process_timesync_req(void *taskparameter) {
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} // for
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} // for
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// begin of time critical section: lock I2C bus to ensure accurate timing
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// begin of time critical section: lock I2C bus to ensure accurate timing
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// don't move the mutex, will impact accuracy of time up to 1 sec!
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if (!mask_user_IRQ())
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if (!I2C_MUTEX_LOCK())
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goto error; // failure
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goto error; // failure
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// average time offset from collected diffs
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// average time offset from collected diffs
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@ -133,9 +132,10 @@ void process_timesync_req(void *taskparameter) {
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setMyTime(time_to_set, time_to_set_fraction_msec);
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setMyTime(time_to_set, time_to_set_fraction_msec);
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// end of time critical section: release I2C bus
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// end of time critical section: release I2C bus
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I2C_MUTEX_UNLOCK();
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unmask_user_IRQ();
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finish:
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finish:
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lora_time_sync_pending = false;
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lora_time_sync_pending = false;
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timeSyncReqTask = NULL;
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timeSyncReqTask = NULL;
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vTaskDelete(NULL); // end task
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vTaskDelete(NULL); // end task
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@ -215,7 +215,8 @@ int recv_timesync_ans(uint8_t buf[], uint8_t buf_len) {
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// adjust system time, calibrate RTC and RTC_INT pps
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// adjust system time, calibrate RTC and RTC_INT pps
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void IRAM_ATTR setMyTime(uint32_t t_sec, uint16_t t_msec) {
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void IRAM_ATTR setMyTime(uint32_t t_sec, uint16_t t_msec) {
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time_t time_to_set = (time_t)t_sec;
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// advance time 1 sec wait time
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time_t time_to_set = (time_t)(t_sec + 1);
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ESP_LOGD(TAG, "[%0.3f] Calculated UTC epoch time: %d.%03d sec",
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ESP_LOGD(TAG, "[%0.3f] Calculated UTC epoch time: %d.%03d sec",
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millis() / 1000.0, time_to_set, t_msec);
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millis() / 1000.0, time_to_set, t_msec);
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@ -225,14 +226,13 @@ void IRAM_ATTR setMyTime(uint32_t t_sec, uint16_t t_msec) {
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// wait until top of second with millisecond precision
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// wait until top of second with millisecond precision
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vTaskDelay(pdMS_TO_TICKS(1000 - t_msec));
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vTaskDelay(pdMS_TO_TICKS(1000 - t_msec));
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// set RTC time and calibrate RTC_INT pulse on top of second
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#ifdef HAS_RTC
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#ifdef HAS_RTC
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time_to_set++; // advance time 1 sec wait time
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// set RTC time and calibrate RTC_INT pulse on top of second
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set_rtctime(time_to_set, no_mutex);
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set_rtctime(time_to_set, no_mutex);
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#endif
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#endif
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// sync pps timer to top of second
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#if (!defined GPS_INT && !defined RTC_INT)
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#if (!defined GPS_INT && !defined RTC_INT)
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// sync pps timer to top of second
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timerWrite(ppsIRQ, 0); // reset pps timer
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timerWrite(ppsIRQ, 0); // reset pps timer
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CLOCKIRQ(); // fire clock pps, this advances time 1 sec
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CLOCKIRQ(); // fire clock pps, this advances time 1 sec
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#endif
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#endif
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