DigitalInfinity/ESP32-PaxCounter
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timesync fixes

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This commit is contained in:
Verkehrsrot 2019-03-17 15:04:11 +01:00
parent 04bc0e1f30
commit c2b28a54cb
2 changed files with 15 additions and 14 deletions
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2
include/timesync.h
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@ -6,7 +6,7 @@
#include "timesync.h"
#include "timekeeper.h"
#define TIME_SYNC_SAMPLES 3 // number of time requests for averaging
#define TIME_SYNC_SAMPLES 2 // number of time requests for averaging
#define TIME_SYNC_CYCLE 2 // seconds between two time requests
#define TIME_SYNC_TIMEOUT 120 // timeout seconds waiting for timeserver answer
#define TIME_SYNC_TRIGGER 100 // time deviation in millisec triggering a sync

27
src/timesync.cpp
View File

@ -20,8 +20,8 @@ static const char TAG[] = __FILE__;
TaskHandle_t timeSyncReqTask;
static uint8_t time_sync_seqNo = 0;
static bool lora_time_sync_pending = false;
static uint8_t time_sync_seqNo{};
static bool lora_time_sync_pending{false};
typedef std::chrono::system_clock myClock;
typedef myClock::time_point myClock_timepoint;
@ -45,7 +45,7 @@ void send_timesync_req() {
lora_time_sync_pending = true;
// initialize timestamp array
for (uint8_t i = 0; i < TIME_SYNC_SAMPLES; i++)
for (uint8_t i{}; i < TIME_SYNC_SAMPLES; i++)
time_sync_tx[i] = time_sync_rx[i] = myClock_timepoint();
// kick off temporary task for timeserver handshake processing
@ -63,12 +63,12 @@ void send_timesync_req() {
// task for sending time sync requests
void process_timesync_req(void *taskparameter) {
uint32_t seq_no = 0, time_to_set_us;
long long int time_to_set_ms;
uint8_t k{};
uint16_t time_to_set_fraction_msec;
uint8_t k = 0, i = 0;
uint32_t seq_no{}, time_to_set_us;
long long int time_to_set_ms;
time_t time_to_set;
auto time_offset = myClock_msecTick::zero();
auto time_offset{myClock_msecTick::zero()};
// wait until we are joined
while (!LMIC.devaddr) {
@ -76,7 +76,7 @@ void process_timesync_req(void *taskparameter) {
}
// enqueue timestamp samples in lora sendqueue
for (uint8_t i = 0; i < TIME_SYNC_SAMPLES; i++) {
for (uint8_t i{}; i < TIME_SYNC_SAMPLES; i++) {
// wrap around seqNo 0 .. 254
time_sync_seqNo = (time_sync_seqNo >= 255) ? 0 : time_sync_seqNo + 1;
@ -172,7 +172,8 @@ finish:
// called from lorawan.cpp after time_sync_req was sent
void store_time_sync_req(uint32_t t_millisec) {
uint8_t k = time_sync_seqNo % TIME_SYNC_SAMPLES;
uint8_t k{time_sync_seqNo % TIME_SYNC_SAMPLES};
time_sync_tx[k] += milliseconds(t_millisec);
ESP_LOGD(TAG, "[%0.3f] Timesync request #%d sent at %d.%03d",
@ -187,9 +188,9 @@ int recv_timesync_ans(uint8_t buf[], uint8_t buf_len) {
if ((!lora_time_sync_pending) || (buf_len != TIME_SYNC_FRAME_LENGTH))
return 0; // failure
uint8_t seq_no = buf[0], k = seq_no % TIME_SYNC_SAMPLES;
uint16_t timestamp_msec = 4 * buf[5]; // convert 1/250th sec fractions to ms
uint32_t timestamp_sec = 0, tmp_sec = 0;
uint8_t seq_no{buf[0]}, k{seq_no % TIME_SYNC_SAMPLES};
uint16_t timestamp_msec; // convert 1/250th sec fractions to ms
uint32_t timestamp_sec;
// get the timeserver time.
// The first 4 bytes contain the UTC seconds since unix epoch.
@ -201,7 +202,7 @@ int recv_timesync_ans(uint8_t buf[], uint8_t buf_len) {
// The 5th byte contains the fractional seconds in 2^-8 second steps
timestamp_msec = 4 * buf[5];
if (timestamp_sec + timestamp_msec) // field validation: timestamp not 0 ?
if ((timestamp_sec) || (timestamp_msec)) // field validation: time not 0 ?
time_sync_rx[k] += seconds(timestamp_sec) + milliseconds(timestamp_msec);
else
return 0; // failure