C3MA/DD3-LoRa-Bridge-MultiSender
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Reduce sender power draw (RX windows + CPU/WiFi/ADC/pins)

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- Add LoRa idle/sleep/receive-window helpers and use short RX windows for ACK/time sync

- Schedule sender time-sync windows (fast/slow) and track RX vs sleep time in debug

- Lower sender power (80 MHz CPU, WiFi/BT off, reduced ADC sampling, unused pins pulldown)

- Make SERIAL_DEBUG_MODE a build flag, add prod envs with debug off, and document changes
This commit is contained in:
acidburns
2026-02-02 21:42:51 +01:00
parent a4d9be1903
commit 8e6c64a18e
8 changed files with 139 additions and 41 deletions
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11
README.md
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@@ -256,6 +256,7 @@ inline constexpr uint16_t EXPECTED_SENDER_IDS[NUM_SENDERS] = { 0xF19C };
- 3.0 V = 0%
- 4.2 V = 100%
- Uses deep sleep between cycles (`SENDER_WAKE_INTERVAL_SEC`).
- Sender CPU is throttled to 80 MHz and LoRa RX is only enabled in short windows (ACK wait or time-sync).
## Web UI
- AP SSID: `DD3-Bridge-<short_id>` (prefix configurable)
@@ -296,12 +297,14 @@ inline constexpr uint16_t EXPECTED_SENDER_IDS[NUM_SENDERS] = { 0xF19C };
- 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
- `lilygo-t3-v1-6-1`: production build (debug on)
- `lilygo-t3-v1-6-1-test`: test build with `ENABLE_TEST_MODE`
- `lilygo-t3-v1-6-1-868`: production build for 868 MHz modules
- `lilygo-t3-v1-6-1-868`: production build for 868 MHz modules (debug on)
- `lilygo-t3-v1-6-1-868-test`: test build for 868 MHz modules
- `lilygo-t3-v1-6-1-payload-test`: build with `PAYLOAD_CODEC_TEST`
- `lilygo-t3-v1-6-1-868-payload-test`: 868 MHz build with `PAYLOAD_CODEC_TEST`
- `lilygo-t3-v1-6-1-prod`: production build with serial debug off
- `lilygo-t3-v1-6-1-868-prod`: 868 MHz production build with serial debug off
## Config Knobs
Key timing settings in `include/config.h`:
@@ -311,9 +314,11 @@ Key timing settings in `include/config.h`:
- `BATCH_MAX_RETRIES`
- `BATCH_QUEUE_DEPTH`
- `BATCH_RETRY_POLICY` (keep or drop on retry exhaustion)
- `SERIAL_DEBUG_MODE` / `SERIAL_DEBUG_DUMP_JSON`
- `SERIAL_DEBUG_MODE_FLAG` (build flag) / `SERIAL_DEBUG_DUMP_JSON`
- `LORA_SEND_BYPASS` (debug only)
- `ENABLE_SD_LOGGING` / `PIN_SD_CS`
- `SENDER_TIMESYNC_WINDOW_MS`
- `SENDER_TIMESYNC_CHECK_SEC_FAST` / `SENDER_TIMESYNC_CHECK_SEC_SLOW`
- `SD_HISTORY_MAX_DAYS` / `SD_HISTORY_MIN_RES_MIN`
- `SD_HISTORY_MAX_BINS` / `SD_HISTORY_TIME_BUDGET_MS`
- `WEB_AUTH_REQUIRE_STA` / `WEB_AUTH_REQUIRE_AP` / `WEB_AUTH_DEFAULT_USER` / `WEB_AUTH_DEFAULT_PASS`