C3MA/DD3-LoRa-Bridge-MultiSender
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smaller rtc fixes

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acidburns
2026-01-29 22:59:17 +01:00
parent ce0ee77f77
commit 7e3b537e49
2 changed files with 21 additions and 2 deletions
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README.md
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@@ -114,7 +114,7 @@ void receiver_loop() {
}
if (time_to_send_timesync()) {
time_send_timesync(self_short_id); // 60s for first 10 min, then hourly
time_send_timesync(self_short_id); // 60s for first 10 min, then hourly if RTC is present
}
mqtt_loop();
@@ -242,8 +242,10 @@ inline constexpr uint16_t EXPECTED_SENDER_IDS[NUM_SENDERS] = { 0xF19C };
- Defaults: `pool.ntp.org` and `time.nist.gov`.
## RTC (DS3231)
- Optional DS3231 on the I2C bus. Connect SDA to GPIO21 and SCL to GPIO22 (same bus as the OLED).
- Enable/disable with `ENABLE_DS3231` in `include/config.h`.
- Receiver time sync packets set the RTC.
- On boot, if no LoRa time sync has arrived yet, the sender uses the RTC time as the initial `ts_utc`.
- When no RTC is present or enabled, the receiver keeps sending time sync every 60 seconds.
## Build Environments
- `lilygo-t3-v1-6-1`: production build