cleanup power handling code

Firmware/EggbotWireless/include/Executor.h

@@ -17,6 +17,6 @@ public:
     I2CStatusMsg status();
 };
 
-
+extern Executor executor;
 
 #endif 

Firmware/EggbotWireless/include/Globals.h

@@ -2,10 +2,5 @@
 #define GLOBALS_H
 
 #include <Arduino.h>
-#include "Power.h"
-#include "Executor.h"
-
-Power power;
-Executor executor;
 
 #endif // GLOBALS_H

Firmware/EggbotWireless/include/Power.h

@@ -2,18 +2,26 @@
 #define POWER_H
 
 #include <Arduino.h>
+#include <functional>
+#include <Ticker.h>
 
 #include "Config.h"
 
 class Power {
    private:
     bool enabled12v = false;
+    unsigned long lastCmdTime = 0;
+    void tickerRoutine();
+    Ticker ticker;
 
    public:
     Power();
     void disable12v();
     void enable12v();
     bool isEnabled12v();
+    void commandHook();
 };
 
+extern Power power;
+
 #endif  // POWER_H

Firmware/EggbotWireless/src/Executor.cpp

@@ -1,5 +1,7 @@
 #include "Executor.h"
 
+Executor executor;
+
 Executor::Executor() {}
 
 void Executor::execCommand(Command command) {

Firmware/EggbotWireless/src/Globals.cpp

@@ -0,0 +1 @@
+#include "Globals.h"

Firmware/EggbotWireless/src/Power.cpp

@@ -1,8 +1,20 @@
 #include "Power.h"
+#include "Globals.h"
+
+Power power;
+
+constexpr unsigned long commandTimeout = 20000;
 
 Power::Power() {
     pinMode(pin12v, OUTPUT);
     disable12v();
+    ticker.attach(0.1, std::bind(&Power::tickerRoutine, this));
+}
+
+void Power::tickerRoutine() {
+    if (millis() - lastCmdTime > commandTimeout) {
+        disable12v();
+    }
 }
 
 void Power::disable12v() {
@@ -18,3 +30,7 @@ void Power::enable12v() {
 bool Power::isEnabled12v() {
     return enabled12v;
 }
+
+void Power::commandHook() {
+    lastCmdTime = millis();
+}

Firmware/EggbotWireless/src/main.cpp

@@ -4,6 +4,7 @@
 #include <Wire.h>
 #include "GCodeParser.h"
 #include "Globals.h"
+#include "Executor.h"
 #include "Power.h"
 #include "common/Commands.h"
 
@@ -15,13 +16,8 @@ void setup() {
     power.enable12v();
 }
 
-unsigned long commandTime = 0;
-constexpr unsigned long commandTimeout = 20000;
 
 void loop() {
-    if (millis() - commandTime > commandTimeout) {
-        power.disable12v();
-    }
     while (Serial.available() > 0) {
         char inChar = Serial.read();
         inString += inChar;
@@ -32,8 +28,8 @@ void loop() {
                 power.enable12v();
                 delay(100);
             }
+            power.commandHook();
             executor.execCommand(parseGCode(inString));
-            commandTime = millis();
             I2CStatusMsg response;
             do {
                 response = executor.status();