add is idle condition on RGBL lib

lib/GRBL/include/GRBL.h

@@ -8,6 +8,7 @@ class iGRBL{
 public:
     virtual void init(int speed, double pas, int accel, String mode = "distance") = 0;
     virtual void mouveForward(int mm) = 0;
+    virtual bool isIddle() = 0;
 };
 
 class GRBL : public iGRBL{
@@ -15,6 +16,7 @@ public:
     GRBL(int grblAddr);
     void init(int speed, double pas, int accel, String mode = "distance") override;
     void mouveForward(int mm = 5) override;
+    bool isIddle() override;
 private:
     Module_GRBL* grbl;
 };

lib/GRBL/src/GRBL.cpp

@@ -32,3 +32,13 @@ void GRBL::mouveForward(int mm){
     sprintf(s, "G1 X%d", mm);
     this->grbl->sendGcode(s);
 }
+
+bool GRBL::isIddle(){
+    bool sortie = false;
+
+    if(this->grbl->readStatus().indexOf("IDLE") != -1){
+        sortie = true;
+    }
+
+    return sortie;
+}