Continuing to sketch out the test mode. This should probably be on a branch

src/TestMode.cpp

@@ -1,6 +1,9 @@
 #include "KeyboardioFirmware.h"
 #include "TestMode.h"
 
+TestMode_::TestMode_(void) {
+}
+
 void TestMode_::TestLEDs(void) {
     // make all LEDs dim red
     LEDControl.set_all_leds_to(50,0,0);
@@ -47,3 +50,19 @@ void TestMode_::TestLEDs(void) {
     // as you hit each key a second time, set it to green
     // as you hit each key a third time, set it to off
 }
+
+
+
+void TestMode_::TestMatrix () {
+    KeyboardHardware.read_matrix();
+
+}
+
+void TestMode_::setup() {
+    eventHandlers[0] = handle_key_event_test;
+}
+bool handle_key_event_test(byte row, byte col, uint8_t currentState, uint8_t previousState) {
+    Serial.write(row);
+}
+
+TestMode_ TestMode;

src/TestMode.h

@@ -1,11 +1,18 @@
+#pragma once
+#include <Arduino.h>
+
 class TestMode_ {
   public:
-
-    void start();
-
-  private:
+    TestMode_(void);
+    void setup();
 
     void TestLEDs();
     void TestKeys();
+    void TestMatrix();
     void TestOneKey();
+  private:
 };
+
+extern TestMode_ TestMode;
+
+bool handle_key_event_test(byte row, byte col, uint8_t currentState, uint8_t previousState);