diff --git a/Readme.md b/Readme.md
index 9cbf097..8659877 100644
--- a/Readme.md
+++ b/Readme.md
@@ -52,14 +52,19 @@ rustup component add --toolchain nightly rustfmt
 
 ### Build and Flash
 In default configuration only signal phases (SPAT) data is displayed for the upcoming intersection.
-Additional features are available though feature flags:
+Additional features are available through feature flags:
 
 - `esp`: Run on ESP (required as feature flag to enable unit tests on host)
 - `std`: Run on system with `std` library
-- `spat`: Enable signal phase (and intersection map) data  
+- `spat`: Enable signal phase (and intersection map) data
+- `spat_debug`: Enable additional debug information for the SPAT/ GLOSA use case
 - `denm`: Enable DENMs
 - `cam`: Enable CAMs
 
+Officially supported feature combinations are:
+- `esp,spat,gnss,screen` (default features)
+- To be implemented: No GNSS and screen when BLE/ UART interface is implemented
+
 Connect your ESP32-C5 and run:
 
 ```
diff --git a/feat-permut.sh b/feat-permut.sh
new file mode 100755
index 0000000..cd20431
--- /dev/null
+++ b/feat-permut.sh
@@ -0,0 +1,69 @@
+#!/bin/bash
+## Build/ Test/ Clippy all supported feature permutations
+set -eu
+
+mode=${1:-help}
+wasm_target="--chrome --headless"
+extended=${2:-false}
+
+
+features_base=(
+  #cam,denm,uart
+  spat,gnss,screen
+)
+features_more=(
+  spat,gnss,screen,cam,denm
+)
+features_test=(
+  spat
+  spat,cam,denm
+)
+
+
+runBuild () {
+  for feat in "${features[@]}"; do
+    echo "cargo build for $feat ..."
+    cargo build --release --no-default-features -F esp,$feat
+  done
+}
+
+runTest () {
+  for feat in "${features_test[@]}"; do
+    echo "cargo test for $feat ..."
+    cargo test --target host-tuple --bin test --no-default-features -F std,$feat
+  done
+}
+
+runClippy () {
+  for feat in "${features[@]}"; do
+    echo "clippy for $feat ..."
+    cargo clippy --no-default-features -F esp,$feat -- -Wclippy::pedantic
+  done
+}
+
+if [ $extended == "--more" ]; then
+  echo "running with extended feature list"
+  features=( "${features_base[@]}" "${features_more[@]}" )
+else
+  echo "running standard feature list"
+  features=( "${features_base[@]}" )
+fi
+
+case $mode in
+build)
+  runBuild
+  ;;
+clippy)
+  runClippy
+  ;;
+test)
+  runTest
+  ;;
+all)
+  runBuild
+  runClippy
+  runTest
+  ;;
+*)
+  echo "Usage: $0 [build | clippy | test | all] [--more]"
+esac
diff --git a/src/applogic/mod.rs b/src/applogic/mod.rs
index bf3252a..98d100f 100644
--- a/src/applogic/mod.rs
+++ b/src/applogic/mod.rs
@@ -6,7 +6,7 @@ use alloc::rc::Rc;
 use alloc::vec::Vec;
 
 use log::info;
-#[cfg(any(feature = "gnss", feature = "spat"))]
+#[cfg(feature = "spat")]
 use log::warn;
 #[cfg(feature = "spat")]
 use log::{debug, error};
@@ -688,13 +688,13 @@ mod tests {
         let own_pos_passed = geo_types::Point::new(9.977217, 53.5560602);
         let own_heading = 90.;
 
-        state.heading_deg = Some(own_heading);
+        state.pos.heading_deg = Some(own_heading);
 
-        state.position = own_pos_infront;
+        state.pos.position = own_pos_infront;
         state.run_glosa();
         assert!(matches!(state.glosa_state, GlosaState::Idle));
 
-        state.position = own_pos_inside;
+        state.pos.position = own_pos_inside;
         state.run_glosa();
         assert!(matches!(state.glosa_state, GlosaState::Locked(_)));
         if let GlosaState::Locked(info) = &state.glosa_state {
@@ -702,7 +702,7 @@ mod tests {
             assert!(info.lane_id == 1 || info.lane_id == 2);
         }
 
-        state.position = own_pos_inside;
+        state.pos.position = own_pos_inside;
         state.run_glosa();
         assert!(matches!(state.glosa_state, GlosaState::Locked(_)));
         if let GlosaState::Locked(info) = &state.glosa_state {
@@ -710,7 +710,7 @@ mod tests {
             assert!(info.lane_id == 1 || info.lane_id == 2);
         }
 
-        state.position = own_pos_passed;
+        state.pos.position = own_pos_passed;
         state.run_glosa();
         assert!(matches!(state.glosa_state, GlosaState::Idle));
     }