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change signal strength to penalize overly strong signals

This commit is contained in:
Brent George 2021-12-14 11:34:15 -07:00
parent d1f8b42d22
commit 9bc86347be
1 changed files with 7 additions and 4 deletions
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11
src/modules/network.cpp
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@ -788,13 +788,16 @@ void waybar::modules::Network::parseSignal(struct nlattr **bss) {
if (bss[NL80211_BSS_SIGNAL_MBM] != nullptr) {
// signalstrength in dBm from mBm
signal_strength_dbm_ = nla_get_s32(bss[NL80211_BSS_SIGNAL_MBM]) / 100;
// WiFi-hardware usually operates in the range -90 to -30dBm.
const int hardwareMax = -30;
// If a signal is too strong, it can overwhelm receiving circuity that is designed
// to pick up and process a certain signal level. The following percentage is scaled to
// punish signals that are too strong (>= -45dBm) or too weak (<= -45 dBm).
const int hardwareOptimum = -45;
const int hardwareMin = -90;
const int strength =
((signal_strength_dbm_ - hardwareMin) / double{hardwareMax - hardwareMin}) * 100;
signal_strength_ = std::clamp(strength, 0, 100);
100 - ((abs(signal_strength_dbm_ - hardwareOptimum) / double{hardwareOptimum - hardwareMin}) * 100);
signal_strength_ = std::clamp(strength, 0, 100);
}
if (bss[NL80211_BSS_SIGNAL_UNSPEC] != nullptr) {
signal_strength_ = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);