getEstAirtimeFor() set LDRO from `sf >= 11`, correct only at BW125. Now
matches the driver's should_enable_ldro() (t_sym > 16.38 ms) so the
estimate's DE tracks hardware DE on every SF/BW. Also drop dead
calcRxDelay() + unused MAX_RX_DELAY_MILLIS.
every LBT-retried flood packet loses its priority (fixed)
witching between LBT and non-LBT mode (or any cad.mode change) could silently skip full reconfiguration and leave the radio in the wrong mode (fixed)
Add .gitattributes rules so .c/.h/.cpp/.hpp are always stored as LF
(prevents EOL drift from editors with autocrlf-true defaults), and
renormalize the 30 source files that had drifted to CRLF in the index.
Pure mechanical change — `git diff --ignore-cr-at-eol` is empty.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Three correctness fixes for the SX127x radio adapter on top of
Rastislav's initial sx1276 + patch commits:
1. _loramac_node flag (LoRaRadioBase + SX127xRadio):
Guard the direction-only fast path in configureTx()/configureRx()
so loramac-node always calls both Radio.SetTxConfig() and
Radio.SetRxConfig(). Skipping either leaves TxTimeout=0 in the
library, causing an immediate TX timeout callback, which prevents
the _tx_signal from ever being raised and blocks the TX wait thread
for TX_TIMEOUT_MS (5 s) — a 5-second RX blackout per transmission.
This was the root cause of "boots but no RX".
2. SX127xRadio::resetAGC() override:
The base-class resetAGC() calls startReceive() after hwResetAGC().
During async RX the loramac-node modem mutex is STATE_BUSY, so
lora_recv_async() returns -EBUSY, which sets _in_recv_mode = 0 and
corrupts the receive state machine. Override skips the call
entirely — the loramac-node driver self-manages AGC.
3. BW 62.5 kHz support in loramac-node/sx1276.c + patch:
Rastislav's 0004-lora-sx127x-62k5-bandwidth.patch adds BW_62_KHZ
support to sx12xx_common.c (Zephyr side) but not to the loramac-
node library itself. Without this fix bandwidth index 3 hits the
"while(1)" fatal guard in SX1276SetRxConfig/SX1276SetTxConfig.
This commit patches sx1276.c directly and adds
patches/modules/loramac-node/0001-sx1276-bw62k5.patch so the fix
survives west update. CMakeLists.txt is extended to apply module
patches via the existing zephcore_apply_patches() mechanism.
liquidraver