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timesync.cpp: fixed major bug in lora time sync

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This commit is contained in:
Klaus K Wilting 2020-03-01 23:49:52 +01:00
parent d180a56fd1
commit 785cb4068a
1 changed files with 4 additions and 5 deletions
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9
src/timesync.cpp
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@ -120,8 +120,8 @@ void process_timesync_req(void *taskparameter) {
// calculate time offset with millisecond precision using LMIC's time base,
// since we use LMIC's ostime_t txEnd as tx timestamp.
// Also apply calibration const to compensate processing time.
time_offset_ms +=
milliseconds(osticks2ms(os_getTime())) + milliseconds(TIME_SYNC_FIXUP);
time_offset_ms += milliseconds(osticks2ms(os_getTime())) -
milliseconds(millis()) + milliseconds(TIME_SYNC_FIXUP);
// calculate absolute time in UTC epoch: convert to whole seconds, round to
// ceil, and calculate fraction milliseconds
@ -208,10 +208,9 @@ int recv_timesync_ans(const uint8_t buf[], const uint8_t buf_len) {
uint16_t timestamp_msec = 4 * buf[0];
// construct the timepoint when message was seen on gateway
time_sync_rx[k] +=
seconds(timestamp_sec) + milliseconds(timestamp_msec);
time_sync_rx[k] += seconds(timestamp_sec) + milliseconds(timestamp_msec);
// we guess timepoint is recent if it newer than code compile date
// we guess timepoint is recent if it is newer than code compile date
if (timeIsValid(myClock::to_time_t(time_sync_rx[k]))) {
ESP_LOGD(TAG, "[%0.3f] Timesync request #%d of %d rcvd at %d.%03d",
millis() / 1000.0, k + 1, TIME_SYNC_SAMPLES, timestamp_sec,