interface to enable or disable acceleration management

main.c

@@ -21,6 +21,7 @@
 #include <avr/io.h>
 #include <avr/sleep.h>
 #include <util/delay.h>
+#include "motion_plan.h"
 #include "stepper.h"
 #include "spindle_control.h"
 #include "motion_control.h"
@@ -35,6 +36,7 @@ int main(void)
   beginSerial(BAUD_RATE);
   printString("A");
   config_init();
+  mp_init(); // initialize the motion plan subsystem
   st_init(); // initialize the stepper subsystem
   mc_init(); // initialize motion control subsystem
   spindle_init(); // initialize spindle controller