modified: adc_driver.hpp

adc_driver.hpp

@@ -1,3 +1,6 @@
+#ifndef _ADC_DRIVER_HPP_
+#define _ADC_DRIVER_HPP_ 1
+
 #include "hardware/adc.h"
 #include "hardware/irq.h"
 #include "pico/multicore.h"
@@ -102,3 +105,4 @@ class ADC_Driver {
             }
         };
 };
+#endif