Unlock 0x8B5 register macro guard for SX162 - #9777
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thebentern
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Seems like the log text should have been updated to not mention the specific GC1109 FEM too @thebentern |
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Good call. I'll update the log too |
thebentern
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Apr 21, 2026
…ity (#10219) The CALIBRATE_ALL (0x7F) command inside resetAGC() clears bit 0 of the undocumented 0x8B5 register. That bit is set once in init() by #9571 and #9777 to improve SX1262 RX sensitivity, and the AGC-reset path was not re-applying it. Result: every SX1262 node silently loses the RX sensitivity patch ~60s after boot and never recovers until reboot. Empirically confirmed on Heltec Mesh Node T114 (nRF52840 + SX1262): - Post-calibration read of 0x8B5 = 0x04 (bit 0 cleared) - After re-apply: 0x05 (bit 0 set) Reproducible every AGC_RESET_INTERVAL_MS tick. Fix re-applies the register bit alongside the existing post-calibration re-applies (setDio2AsRfSwitch, setRxBoostedGainMode).
thebentern
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Apr 21, 2026
…ity (#10219) The CALIBRATE_ALL (0x7F) command inside resetAGC() clears bit 0 of the undocumented 0x8B5 register. That bit is set once in init() by #9571 and #9777 to improve SX1262 RX sensitivity, and the AGC-reset path was not re-applying it. Result: every SX1262 node silently loses the RX sensitivity patch ~60s after boot and never recovers until reboot. Empirically confirmed on Heltec Mesh Node T114 (nRF52840 + SX1262): - Post-calibration read of 0x8B5 = 0x04 (bit 0 cleared) - After re-apply: 0x05 (bit 0 set) Reproducible every AGC_RESET_INTERVAL_MS tick. Fix re-applies the register bit alongside the existing post-calibration re-applies (setDio2AsRfSwitch, setRxBoostedGainMode).
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Evil8it
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Jun 10, 2026
…ity (meshtastic#10219) The CALIBRATE_ALL (0x7F) command inside resetAGC() clears bit 0 of the undocumented 0x8B5 register. That bit is set once in init() by meshtastic#9571 and meshtastic#9777 to improve SX1262 RX sensitivity, and the AGC-reset path was not re-applying it. Result: every SX1262 node silently loses the RX sensitivity patch ~60s after boot and never recovers until reboot. Empirically confirmed on Heltec Mesh Node T114 (nRF52840 + SX1262): - Post-calibration read of 0x8B5 = 0x04 (bit 0 cleared) - After re-apply: 0x05 (bit 0 set) Reproducible every AGC_RESET_INTERVAL_MS tick. Fix re-applies the register bit alongside the existing post-calibration re-applies (setDio2AsRfSwitch, setRxBoostedGainMode).
jeek
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Jun 30, 2026
Itzdavid01
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Sep 5, 2026
Itzdavid01
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Sep 5, 2026
…ity (meshtastic#10219) The CALIBRATE_ALL (0x7F) command inside resetAGC() clears bit 0 of the undocumented 0x8B5 register. That bit is set once in init() by meshtastic#9571 and meshtastic#9777 to improve SX1262 RX sensitivity, and the AGC-reset path was not re-applying it. Result: every SX1262 node silently loses the RX sensitivity patch ~60s after boot and never recovers until reboot. Empirically confirmed on Heltec Mesh Node T114 (nRF52840 + SX1262): - Post-calibration read of 0x8B5 = 0x04 (bit 0 cleared) - After re-apply: 0x05 (bit 0 set) Reproducible every AGC_RESET_INTERVAL_MS tick. Fix re-applies the register bit alongside the existing post-calibration re-applies (setDio2AsRfSwitch, setRxBoostedGainMode).
Itzdavid01
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Sep 5, 2026
…ity (meshtastic#10219) The CALIBRATE_ALL (0x7F) command inside resetAGC() clears bit 0 of the undocumented 0x8B5 register. That bit is set once in init() by meshtastic#9571 and meshtastic#9777 to improve SX1262 RX sensitivity, and the AGC-reset path was not re-applying it. Result: every SX1262 node silently loses the RX sensitivity patch ~60s after boot and never recovers until reboot. Empirically confirmed on Heltec Mesh Node T114 (nRF52840 + SX1262): - Post-calibration read of 0x8B5 = 0x04 (bit 0 cleared) - After re-apply: 0x05 (bit 0 set) Reproducible every AGC_RESET_INTERVAL_MS tick. Fix re-applies the register bit alongside the existing post-calibration re-applies (setDio2AsRfSwitch, setRxBoostedGainMode).
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