From 1502f20af11205709e56f51d662f7ae2eb7156df Mon Sep 17 00:00:00 2001
From: Ahmet Inan <xdsopl@gmail.com>
Date: Wed, 20 Aug 2025 10:38:30 +0200
Subject: [PATCH 1/2] updated libs and tools

---
 app/build.gradle                         | 4 ++--
 gradle/libs.versions.toml                | 8 ++++----
 gradle/wrapper/gradle-wrapper.properties | 2 +-
 3 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/app/build.gradle b/app/build.gradle
index 6edaf7a..6eb6a16 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -4,12 +4,12 @@ plugins {
 
 android {
     namespace 'xdsopl.robot36'
-    compileSdk 35
+    compileSdk = 36
 
     defaultConfig {
         applicationId "xdsopl.robot36"
         minSdk 24
-        targetSdk 35
+        targetSdk 36
         versionCode 65
         versionName "2.15"
 
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index dc8e4b3..5a30e75 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,9 +1,9 @@
 [versions]
-agp = "8.9.0"
+agp = "8.12.1"
 junit = "4.13.2"
-junitVersion = "1.2.1"
-espressoCore = "3.6.1"
-appcompat = "1.7.0"
+junitVersion = "1.3.0"
+espressoCore = "3.7.0"
+appcompat = "1.7.1"
 material = "1.12.0"
 activity = "1.10.1"
 constraintlayout = "2.2.1"
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index d3118f9..42eca13 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,6 @@
 #Fri Apr 12 11:35:07 CEST 2024
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

From 7ad54873da2a33f7261892832d9a1260d70db3bc Mon Sep 17 00:00:00 2001
From: Ahmet Inan <xdsopl@gmail.com>
Date: Wed, 20 Aug 2025 12:12:34 +0200
Subject: [PATCH 2/2] added frequency markers

---
 app/src/main/java/xdsopl/robot36/MainActivity.java | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/app/src/main/java/xdsopl/robot36/MainActivity.java b/app/src/main/java/xdsopl/robot36/MainActivity.java
index 0a51384..b5d50dc 100644
--- a/app/src/main/java/xdsopl/robot36/MainActivity.java
+++ b/app/src/main/java/xdsopl/robot36/MainActivity.java
@@ -89,6 +89,8 @@ public class MainActivity extends AppCompatActivity {
 	private int tintColor;
 	private boolean autoSave;
 	private boolean showSpectrogram;
+	private final int binWidthHz = 10;
+	private final int[] freqMarkers = { 1100, 1300, 1500, 2300 };
 
 	private void setStatus(int id) {
 		setTitle(id);
@@ -223,8 +225,12 @@ public class MainActivity extends AppCompatActivity {
 				double lowest = Math.log(1e-9);
 				double highest = Math.log(1);
 				double range = highest - lowest;
+				int minFreq = 140;
+				int minBin = minFreq / binWidthHz;
 				for (int i = 0; i < stride; ++i)
-					waterfallPlotBuffer.pixels[line + i] = rainbow((Math.log(stft.power[i + 14]) - lowest) / range);
+					waterfallPlotBuffer.pixels[line + i] = rainbow((Math.log(stft.power[i + minBin]) - lowest) / range);
+				for (int freq : freqMarkers)
+					waterfallPlotBuffer.pixels[line + (freq - minFreq) / binWidthHz] = fgColor;
 				System.arraycopy(waterfallPlotBuffer.pixels, line, waterfallPlotBuffer.pixels, line + stride * (waterfallPlotBuffer.height / 2), stride);
 			}
 		}
@@ -315,7 +321,7 @@ public class MainActivity extends AppCompatActivity {
 				if (rateChanged) {
 					decoder = new Decoder(scopeBuffer, imageBuffer, getString(R.string.raw_mode), recordRate);
 					decoder.setMode(currentMode);
-					stft = new ShortTimeFourierTransform(recordRate / 10, 3);
+					stft = new ShortTimeFourierTransform(recordRate / binWidthHz, 3);
 				}
 				startListening();
 			} else {