From 98c90d52900a51cf05cc6fc22ca30266fd37d542 Mon Sep 17 00:00:00 2001
From: Jacob Powers <powersjcb@gmail.com>
Date: Sat, 14 Sep 2024 19:25:40 +0000
Subject: [PATCH] fix signal quality display when rssi missing

---
 .../Helpers/LoRaSignalStrengthIndicator.swift      | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Meshtastic/Views/Helpers/LoRaSignalStrengthIndicator.swift b/Meshtastic/Views/Helpers/LoRaSignalStrengthIndicator.swift
index 4405e819..03735ae2 100644
--- a/Meshtastic/Views/Helpers/LoRaSignalStrengthIndicator.swift
+++ b/Meshtastic/Views/Helpers/LoRaSignalStrengthIndicator.swift
@@ -72,6 +72,20 @@ private func getColor(signalStrength: LoRaSignalStrength) -> Color {
 }
 
 func getLoRaSignalStrength(snr: Float, rssi: Int32, preset: ModemPresets) -> LoRaSignalStrength {
+	// rssi is 0 when not available
+	if rssi == 0 {
+		if snr > (preset.snrLimit()) {
+			return .good
+		}
+		if snr < (preset.snrLimit() - 7.5) {
+			return .none
+		}
+		if snr <= (preset.snrLimit() - 5.5) {
+			return .bad
+		}
+		return .fair
+	}
+
 	if rssi > -115 && snr > (preset.snrLimit()) {
 		return .good
 	} else if rssi < -126 && snr < (preset.snrLimit() - 7.5) {