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Fix erroneous limiting of power in Ham Mode (#8322)

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Ham Mode ignores region regulatory limits, so regardless of whether
we set a single TX_GAIN_LORA or an array with a non-linear PA,
we shouldn't limit the power.

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
This commit is contained in:
Tom Fifield 2025-10-13 23:50:57 +11:00 committed by GitHub
parent fe6509a0f2
commit 130833b5be
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GPG Key ID: B5690EEEBB952194
1 changed files with 12 additions and 11 deletions
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23
src/mesh/RadioInterface.cpp
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@ -647,23 +647,24 @@ void RadioInterface::limitPower(int8_t loraMaxPower)
}
#ifndef NUM_PA_POINTS
if (TX_GAIN_LORA > 0) {
if (TX_GAIN_LORA > 0 && !devicestate.owner.is_licensed) {
LOG_INFO("Requested Tx power: %d dBm; Device LoRa Tx gain: %d dB", power, TX_GAIN_LORA);
power -= TX_GAIN_LORA;
}
#else
// we have an array of PA gain values. Find the highest power setting that works.
const uint16_t tx_gain[NUM_PA_POINTS] = {TX_GAIN_LORA};
for (int radio_dbm = 0; radio_dbm < NUM_PA_POINTS; radio_dbm++) {
if (((radio_dbm + tx_gain[radio_dbm]) > power) ||
((radio_dbm == (NUM_PA_POINTS - 1)) && ((radio_dbm + tx_gain[radio_dbm]) <= power))) {
// we've exceeded the power limit, or hit the max we can do
LOG_INFO("Requested Tx power: %d dBm; Device LoRa Tx gain: %d dB", power, tx_gain[radio_dbm]);
power -= tx_gain[radio_dbm];
break;
if (!devicestate.owner.is_licensed) {
// we have an array of PA gain values. Find the highest power setting that works.
const uint16_t tx_gain[NUM_PA_POINTS] = {TX_GAIN_LORA};
for (int radio_dbm = 0; radio_dbm < NUM_PA_POINTS; radio_dbm++) {
if (((radio_dbm + tx_gain[radio_dbm]) > power) ||
((radio_dbm == (NUM_PA_POINTS - 1)) && ((radio_dbm + tx_gain[radio_dbm]) <= power))) {
// we've exceeded the power limit, or hit the max we can do
LOG_INFO("Requested Tx power: %d dBm; Device LoRa Tx gain: %d dB", power, tx_gain[radio_dbm]);
power -= tx_gain[radio_dbm];
break;
}
}
}
#endif
if (power > loraMaxPower) // Clamp power to maximum defined level
power = loraMaxPower;