Lỗi "Not enough memory" khi chạy code Arduino

[phamdinhthiens (Thiện)]

https://drive.google.com/file/d/1SfWtYE4eS6cdRUk_U2tZg3iPtggN_OuP/view?usp=sharing

Mình chạy mà cứ bị lỗi như bên dưới:

C:\Users\MrThien\Documents\Arduino\code\code.ino: In function 'void Stop_Y_Left_Axis()':

C:\Users\MrThien\Documents\Arduino\code\code.ino:38:9: warning: converting to non-pointer type 'int' from NULL [-Wconversion-null]

     val = NULL;

         ^

C:\Users\MrThien\Documents\Arduino\code\code.ino: In function 'void Stop_Y_Right_Axis()':

C:\Users\MrThien\Documents\Arduino\code\code.ino:51:9: warning: converting to non-pointer type 'int' from NULL [-Wconversion-null]

     val =NULL;

         ^

C:\Users\MrThien\Documents\Arduino\code\code.ino: In function 'void Stop_X_Right_Axis()':

C:\Users\MrThien\Documents\Arduino\code\code.ino:62:9: warning: converting to non-pointer type 'int' from NULL [-Wconversion-null]

     val = NULL;

         ^

C:\Users\MrThien\Documents\Arduino\code\code.ino: In function 'void Stop_X_Left_Axis()':

C:\Users\MrThien\Documents\Arduino\code\code.ino:73:9: warning: converting to non-pointer type 'int' from NULL [-Wconversion-null]

     val = NULL;

         ^

C:\Users\MrThien\Documents\Arduino\code\code.ino: In function 'void Stop_Z_Up_Axis()':

C:\Users\MrThien\Documents\Arduino\code\code.ino:83:9: warning: converting to non-pointer type 'int' from NULL [-Wconversion-null]

     val = NULL;

         ^

C:\Users\MrThien\Documents\Arduino\code\code.ino: In function 'void Stop_Z_Down_Axis()':

C:\Users\MrThien\Documents\Arduino\code\code.ino:94:7: warning: converting to non-pointer type 'int' from NULL [-Wconversion-null]

   val = NULL;

       ^

C:\Users\MrThien\Documents\Arduino\code\code.ino: In function 'void Manual()':

C:\Users\MrThien\Documents\Arduino\code\code.ino:390:38: warning: passing NULL to non-pointer argument 2 of 'void* memset(void*, int, size_t)' [-Wconversion-null]

         memset(Data,NULL,sizeof(Data));

                                      ^

C:\Users\MrThien\Documents\Arduino\code\code.ino: In function 'void loop()':

C:\Users\MrThien\Documents\Arduino\code\code.ino:548:38: warning: passing NULL to non-pointer argument 2 of 'void* memset(void*, int, size_t)' [-Wconversion-null]

         memset(Data,NULL,sizeof(Data));

                                      ^


Sketch uses 9652 bytes (29%) of program storage space. Maximum is 32256 bytes.
Global variables use 6497 bytes (317%) of dynamic memory, leaving -4449 bytes for local variables. Maximum is 2048 bytes.
Not enough memory; see http://www.arduino.cc/en/Guide/Troubleshooting#size for tips on reducing your footprint.
Error compiling for board Arduino/Genuino Uno.

[SITUVN.gcd]

// Nó chỉ chấp nhận
int val = 0;
memset(Data,0,sizeof(Data));

/// Không chấp nhận
int val = NULL;
memset(Data,NULL,sizeof(Data));

Không đủ bộ nhớ sau khi biên dịch và chạy.

Xem lại mã nguồn.
Và đặc biệt, nên đọc và hiểu thông báo lỗi.