Dynamic Power LQ and sensitivity #13
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Make dynamic power respond to reduced LQ as well as RSSI. LQ below a 'panic' threshold raises the power directly to the configured maximum. LQ below a more moderate threshold increments power by 1 dB. Loss of telemetry is now handled directly using a "number of consecutive missed telemetry packets" counter instead of waiting for the normal rx disconnected timeout. RSSI thresholds are now calculated relative to the rx sensitivity of the current packet rate. TX power can be sent in the sync packets for logging via BF black box and display on the OSD (requires modified RX and BF firmwares).
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Adjusts the power of the TX based on RSSI and LQ from telemetry packets. When using dynamic power the power level set on the radio is treated as the maximum to be used, and the actual power will be reduced from that according to the signal strength at the receiver.
Enable by adding #define USE_DYNAMIC_POWER to user_config.h
The thresholds and filter speed are set via #defines in main.cpp
DYN_POWER_INCREASE_MARGIN - relative to the rsSensitivity of the current packet rate mode
DYN_POWER_DECREASE_MARGIN - relative to the above threshold
DYN_POWER_LQ_THRESHOLD - LQ below which power will be gradually increased
DYN_POWER_LQ_PANIC_THRESHOLD - LQ below which power will be set directly to configured max
DYN_POWER_MISSED_TELEM_PACKET_THRESHOLD - The number of consecutive missed telemetry packets that will trigger a transition to the configured max power
DYN_POWER_RSSI_FILTER_CUTOFF_HZ - The filter cuttoff frequency for smoothing the RSSI values. Smaller values will produce a slower response when reducing power. Increases in power happen immediately.