ADRUINO LEONARDO 上传问题！

go2net

从TB购得LEONARDO板子一块，自己焊接好了，用编程器把LEONARDO的bootloader烧进去了，现在电脑能够认识这块板子了，开机先显示一个ADRUINO LEONARDO bootloader （COM5）的设备，然后切换到ADRUINO LEONARDO（COM4）设备。一切看似正常了，但是...

当我打开一个sketch编译上传，RX和TX LED狂闪，设备管理器里面的ADRUINO设备都消失了，等了很久ADRUINO上传报错，我在preference里面打开upload的verbose后，查看打出来的信息，如下：

1. Binary sketch size: 4,758 bytes (of a 28,672 byte maximum)
   
2. 
   
3. Estimated used SRAM memory: 157 bytes (of a 2560 byte maximum)
   
4. [color=Red]Forcing reset using 1200bps open/close on port COM4[/color]
   
5. PORTS {COM4, COM8, } / {COM4, COM8, } => {}
   
6. PORTS {COM4, COM8, } / {COM4, COM8, } => {}
   
7. PORTS {COM4, COM8, } / {COM4, COM8, } => {}
   
8. PORTS {COM4, COM8, } / {COM4, COM8, } => {}
   
9. PORTS {COM4, COM8, } / {COM4, COM8, } => {}
   
10. PORTS {COM4, COM8, } / {COM4, COM8, } => {}
    
11. PORTS {COM4, COM8, } / {COM4, COM8, } => {}
    
12. PORTS {COM4, COM8, } / {COM4, COM8, } => {}
    
13. PORTS {COM4, COM8, } / {COM8, } => {}
    
14. PORTS {COM8, } / {COM8, } => {}
    
15. PORTS {COM8, } / {COM8, } => {}
    
16. PORTS {COM8, } / {COM8, } => {}
    
17. PORTS {COM8, } / {COM8, } => {}
    
18. PORTS {COM8, } / {COM8, } => {}
    
19. PORTS {COM8, } / {COM8, } => {}
    
20. PORTS {COM8, } / {COM8, } => {}
    
21. PORTS {COM8, } / {COM8, } => {}
    
22. PORTS {COM8, } / {COM8, } => {}
    
23. PORTS {COM8, } / {COM8, } => {}
    
24. PORTS {COM8, } / {COM8, } => {}
    
25. PORTS {COM8, } / {COM8, } => {}
    
26. PORTS {COM8, } / {COM8, } => {}
    
27. PORTS {COM8, } / {COM8, } => {}
    
28. PORTS {COM8, } / {COM8, } => {}
    
29. PORTS {COM8, } / {COM8, } => {}
    
30. PORTS {COM8, } / {COM8, } => {}
    
31. PORTS {COM8, } / {COM8, } => {}
    
32. PORTS {COM8, } / {COM8, } => {}
    
33. PORTS {COM8, } / {COM8, } => {}
    
34. PORTS {COM8, } / {COM8, } => {}
    
35. PORTS {COM8, } / {COM8, } => {}
    
36. PORTS {COM8, } / {COM8, } => {}
    
37. PORTS {COM8, } / {COM8, } => {}
    
38. PORTS {COM8, } / {COM8, } => {}
    
39. PORTS {COM8, } / {COM8, } => {}
    
40. PORTS {COM8, } / {COM8, } => {}
    
41. PORTS {COM8, } / {COM8, } => {}
    
42. PORTS {COM8, } / {COM8, } => {}
    
43. PORTS {COM8, } / {COM8, } => {}
    
44. PORTS {COM8, } / {COM8, } => {}
    
45. processing.app.debug.RunnerException: Couldn’t find a Leonardo on the selected port. Check that you have the correct port selected.  If it is correct, try pressing the board's reset button after initiating the upload.
    
46.         at processing.app.debug.AvrdudeUploader.uploadViaBootloader(AvrdudeUploader.java:152)
    
47.         at processing.app.debug.AvrdudeUploader.uploadUsingPreferences(AvrdudeUploader.java:67)
    
48.         at processing.app.Sketch.upload(Sketch.java:1716)
    
49.         at processing.app.Sketch.exportApplet(Sketch.java:1628)
    
50.         at processing.app.Sketch.exportApplet(Sketch.java:1600)
    
51.         at processing.app.Editor$DefaultExportHandler.run(Editor.java:2462)
    
52.         at java.lang.Thread.run(Unknown Source)
    
53. 
    

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Forcing reset using 1200bps open/close on port COM4 这个执行后，TX RX LED开始狂闪，设备管理器里面的ADRUINO设备消失，这个时候，我如果按一下reset按钮，就会正常下载代码了，但是，ADRUINO LEONARDO不是说可以自己让板子重启的吗，

1. private boolean uploadViaBootloader(String buildPath, String className)
   
2.                   throws RunnerException, SerialException {
   
3.     Map<String, String> boardPreferences = Base.getBoardPreferences();
   
4.     List commandDownloader = new ArrayList();
   
5.     String protocol = boardPreferences.get("upload.protocol");
   
6.    
   
7.     // avrdude wants "stk500v1" to distinguish it from stk500v2
   
8.     if (protocol.equals("stk500"))
   
9.       protocol = "stk500v1";      
   
10.    
    
11.     String uploadPort = Preferences.get("serial.port");
    
12. 
    
13. [color=Red]    // need to do a little dance for Leonardo and derivatives:
    
14.     // open then close the port at the magic baudrate (usually 1200 bps) first
    
15.     // to signal to the sketch that it should reset into bootloader. after doing
    
16.     // this wait a moment for the bootloader to enumerate. On Windows, also must
    
17.     // deal with the fact that the COM port number changes from bootloader to
    
18.     // sketch.[/color]
    
19.     if (boardPreferences.get("bootloader.path") != null &&
    
20.         (boardPreferences.get("bootloader.path").equals("caterina") ||
    
21.          boardPreferences.get("bootloader.path").equals("caterina-LilyPadUSB"))) {
    
22.       String caterinaUploadPort = null;
    
23.       try {
    
24.         // Toggle 1200 bps on selected serial port to force board reset.
    
25.         List<String> before = Serial.list();
    
26.         if (before.contains(uploadPort)) {
    
27.           if (verbose || Preferences.getBoolean("upload.verbose"))
    
28.             System.out
    
29.               [color=Red]  .println(_("Forcing reset using 1200bps open/close on port ")
    
30.                     + uploadPort);[/color]
    
31.           Serial.touchPort(uploadPort, 1200);
    
32.          
    
33.           // Scanning for available ports seems to open the port or
    
34.           // otherwise assert DTR, which would cancel the WDT reset if
    
35.           // it happened within 250 ms.  So we wait until the reset should
    
36.           // have already occured before we start scanning.
    
37.           if (!Base.isMacOS()) Thread.sleep(300);
    
38.         }

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从上面的ADRUINO源码看，LEONARDO是通过设置波特率为1200，就让板子重启，这个机制怎么实现的？ 如果实现了，那为何我的板子不能自己重启呢？

难道是我的板子出问题了。我检查了板子的RESET电路，很简单的


会不会是熔丝位设置问题呢，我的芯片是直接从厂商拿的，是全新的，会不会是重启机制需要用到看门狗，而我的看门狗被禁用了啊，无从得知，怎么查呢？

弘毅

感觉是熔丝位设置的问题，你的熔丝位设置的是什么样的？

go2net

我昨晚把熔丝按照手册的缺省值设置了，重启后，板子进不去了，缺省设置里的晶振是设置为内部的RC振荡器，有并行编程器，但没有适配器，查了半天网上的资料，外界一个12M的信号上去，把板子恢复了，现在熔丝是厂商设置了，除了晶振设置为了外部晶振，还是一样的效果

大麦子

我以前碰到过类似的问题，不过没有从代码上找原因，我换了根usb延长线，或者将板子直接接到usb口上就好了

go2net

好了，完全解决问题了，就是fuse设置的问题，主要是fuse里面的


参照这里，要把fuse和lock设置为如下的值，主要是
Boot Reset vector Enabled (default address=$0000); [BOOTRST=0]

1. ##############################################################
   
2. 
   
3. leonardo.name=Arduino Leonardo
   
4. leonardo.upload.protocol=avr109
   
5. leonardo.upload.maximum_size=28672
   
6. leonardo.upload.speed=57600
   
7. leonardo.upload.disable_flushing=true
   
8. leonardo.bootloader.low_fuses=0xff
   
9. leonardo.bootloader.high_fuses=0xd8
   
10. leonardo.bootloader.extended_fuses=0xcb
    
11. leonardo.bootloader.path=caterina
    
12. leonardo.bootloader.file=Caterina-Leonardo.hex
    
13. leonardo.bootloader.unlock_bits=0x3F
    
14. leonardo.bootloader.lock_bits=0x2F
    
15. leonardo.build.mcu=atmega32u4
    
16. leonardo.build.f_cpu=16000000L
    
17. leonardo.build.vid=0x2341
    
18. leonardo.build.pid=0x8036
    
19. leonardo.build.core=arduino
    
20. leonardo.build.variant=leonardo

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bigmango

go2net 发表于 2013-3-25 14:09
好了，完全解决问题了，就是fuse设置的问题，主要是fuse里面的

请问你的熔丝设置到底是多少啊,我现在情况和你差不多,可以认到串口,一下载文件板子就启动,然后就连不上了.
刚刚测试了查一下,如果通过ISP传一个串口的测试程序,电脑可以收到发过来的数据.
当Uploading的时候,收发灯狂闪,如果按reset还是狂闪,不能启动电脑也找不到串口.
但是正常情况下,按reset是可以reset的,奇怪啊.

feiban

ｂｏｏｔｌｏａｄｅｒ在哪里可以找到？