Arduino mega 2560(Freaduino) 下载超时问题

Alimy

背景：Arduino,板子是 Freaduino Mega 256

症状：

1. 
   
2. Sketch uses 8,262 bytes (3%) of program storage space. Maximum is 258,048 bytes.
   
3. Global variables use 1,250 bytes (15%) of dynamic memory, leaving 6,942 bytes for local variables. Maximum is 8,192 bytes.
   
4. avrdude: stk500v2_ReceiveMessage(): timeout
   
5. avrdude: stk500v2_ReceiveMessage(): timeout
   
6. avrdude: stk500v2_ReceiveMessage(): timeout
   
7. avrdude: stk500v2_ReceiveMessage(): timeout
   
8. avrdude: stk500v2_ReceiveMessage(): timeout
   
9. avrdude: stk500v2_ReceiveMessage(): timeout
   
10. avrdude: stk500v2_ReceiveMessage(): timeout
    
11. avrdude: stk500v2_getsync(): timeout communicating with programmer
    
12. avrdude: stk500v2_ReceiveMessage(): timeout
    
13. avrdude: stk500v2_ReceiveMessage(): timeout
    
14. avrdude: stk500v2_ReceiveMessage(): timeout
    
15. avrdude: stk500v2_ReceiveMessage(): timeout
    
16. avrdude: stk500v2_ReceiveMessage(): timeout
    

复制代码

其他情况：
1、下载以前的例程可以正常upload
2、按照百度上说的，更换avrdudu.exe这个程序还是不行。
3、将源文件的内容中的 setup 和loop 函数中的大部分函数屏蔽掉可以下载


大致情况就是这样，不知道有没有遇到相同问题的坛友，还希望停步赐教，谢谢先~

我的源程序：

Alimy

自挽一楼~