求助！apm2.5 mega2560连sd卡实验

慕翌光君

使用的工具是Arduino IDE 1.0.4以及从http://code.google.com/p/sdfatlib/downloads/list下载的sdfatlib20130313.zip.
板子是APM2.5 MEGA 2560
实验是照着http://arduino.cc/forum/index.php/topic,65391.0.html Reply #7里写的来.
但还是失败了...

1. // Quick hardware test
   
2. #include <SdFat.h>
   
3. // Test with reduced SPI speed for breadboards.
   
4. // Change spiSpeed to SPI_FULL_SPEED for better performance
   
5. // Use SPI_QUARTER_SPEED for even slower SPI bus speed
   
6. const uint8_t spiSpeed = SPI_HALF_SPEED;
   
7. //------------------------------------------------------------------------------
   
8. // Normally SdFat is used in applications in place
   
9. // of Sd2Card, SdVolume, and SdFile for root.
   
10. Sd2Card card;
    
11. SdVolume volume;
    
12. SdFile root;
    
13. 
    
14. // Serial streams
    
15. ArduinoOutStream cout(Serial);
    
16. 
    
17. // input buffer for line
    
18. char cinBuf[40];
    
19. ArduinoInStream cin(Serial, cinBuf, sizeof(cinBuf));
    
20. 
    
21. // SD card chip select
    
22. int chipSelect;
    
23. 
    
24. void cardOrSpeed() {
    
25.   cout << pstr(
    
26.     "Try another SD card or reduce the SPI bus speed.\n"
    
27.     "The current SPI speed is: ");
    
28.   uint8_t divisor = 1;
    
29.   for (uint8_t i = 0; i < spiSpeed; i++) divisor *= 2;
    
30.   cout << F_CPU * 0.5e-6 / divisor << pstr(" MHz\n");
    
31.   cout << pstr("Edit spiSpeed in this sketch to change it.\n");
    
32. }
    
33. 
    
34. void reformatMsg() {
    
35.   cout << pstr("Try reformatting the card.  For best results use\n");
    
36.   cout << pstr("the SdFormatter sketch in SdFat/examples or download\n");
    
37.   cout << pstr("and use SDFormatter from www.sdcard.org/consumer.\n");
    
38. }
    
39. 
    
40. void setup() {
    
41.   Serial.begin(9600);
    
42.   while (!Serial) {}  // wait for Leonardo
    
43.   
    
44.   cout << pstr(
    
45.     "\nSD chip select is the key hardware option.\n"
    
46.     "Common values are:\n"
    
47.     "Arduino Ethernet shield, pin 4\n"
    
48.     "Sparkfun SD shield, pin 8\n"
    
49.     "Adafruit SD shields and modules, pin 10\n");
    
50. }
    
51. 
    
52. bool firstTry = true;
    
53. void loop() {
    
54.   // read any existing Serial data
    
55.   while (Serial.read() >= 0) {}
    
56. 
    
57.   if (!firstTry) cout << pstr("\nRestarting\n");
    
58.   firstTry = false;
    
59. 
    
60.   cout << pstr("\nEnter the chip select pin number: ");
    
61.   cin.readline();
    
62.   if (cin >> chipSelect) {
    
63.     cout << chipSelect << endl;
    
64.   } else {
    
65.     cout << pstr("\nInvalid pin number\n");
    
66.     return;
    
67.   }
    
68.   if (!card.init(spiSpeed, chipSelect)) {
    
69.     cout << pstr(
    
70.       "\nSD initialization failed.\n"
    
71.       "Do not reformat the card!\n"
    
72.       "Is the card correctly inserted?\n"
    
73.       "Is chipSelect set to the correct value?\n"
    
74.       "Is there a wiring/soldering problem?\n");
    
75.     cout << pstr("errorCode: ") << hex << showbase << int(card.errorCode());
    
76.     cout << pstr(", errorData: ") << int(card.errorData());
    
77.     cout << dec << noshowbase << endl;
    
78.     return;
    
79.   }
    
80.   cout << pstr("\nCard successfully initialized.\n");
    
81.   cout << endl;
    
82. 
    
83.   uint32_t size = card.cardSize();
    
84.   if (size == 0) {
    
85.     cout << pstr("Can't determine the card size.\n");
    
86.     cardOrSpeed();
    
87.     return;
    
88.   }
    
89.   uint32_t sizeMB = 0.000512 * size + 0.5;
    
90.   cout << pstr("Card size: ") << sizeMB;
    
91.   cout << pstr(" MB (MB = 1,000,000 bytes)\n");
    
92.   cout << endl;
    
93. 
    
94.   if (!volume.init(&card)) {
    
95.     if (card.errorCode()) {
    
96.       cout << pstr("Can't read the card.\n");
    
97.       cardOrSpeed();
    
98.     } else {
    
99.       cout << pstr("Can't find a valid FAT16/FAT32 partition.\n");
    
100.       reformatMsg();
     
101.     }
     
102.     return;
     
103.   }
     
104.   cout << pstr("Volume is FAT") << int(volume.fatType());
     
105.   cout << pstr(", Cluster size (bytes): ") << 512L * volume.blocksPerCluster();
     
106.   cout << endl << endl;
     
107. 
     
108.   root.close();
     
109.   if (!root.openRoot(&volume)) {
     
110.     cout << pstr("Can't open root directory.\n");
     
111.     reformatMsg();
     
112.     return;
     
113.   }
     
114.   cout << pstr("Files found (name date time size):\n");
     
115.   root.ls(LS_R | LS_DATE | LS_SIZE);
     
116. 
     
117.   if ((sizeMB > 1100 && volume.blocksPerCluster() < 64)
     
118.     || (sizeMB < 2200 && volume.fatType() == 32)) {
     
119.     cout << pstr("\nThis card should be reformatted for best performance.\n");
     
120.     cout << pstr("Use a cluster size of 32 KB for cards larger than 1 GB.\n");
     
121.     cout << pstr("Only cards larger than 2 GB should be formatted FAT32.\n");
     
122.     reformatMsg();
     
123.     return;
     
124.   }
     
125.   // read any existing Serial data
     
126.   while (Serial.read() >= 0) {}
     
127.   cout << pstr("\nSuccess!  Type any character to restart.\n");
     
128.   while (Serial.read() < 0) {}
     
129. }

复制代码

Enter the chip select pin number: 12

SD initialization failed.
Do not reformat the card!
Is the card correctly inserted?
Is chipSelect set to the correct value?
Is there a wiring/soldering problem?
errorCode: 0x1, errorData: 0xff

跳线的连接
MISO -- PIN 50
MOSI -- PIN 51
SCK   -- PIN 52
CS     -- PIN12
并且pinMode(53, OUTPUT);
哪位大神帮帮忙~~~求指导!

慕翌光君

代码已贴出~~~求指导~~

慕翌光君

这是APM2.5 Mega2560的原理图

慕翌光君

连接图~~~~~

慕翌光君

没有人用过APM2.5 Mega2560么？~~~~

八百里大漠孤烟

有 2.5的 .sch吗？或者知道去哪里找吗？谢谢了！

八百里大漠孤烟

Sd2Card card;
SdVolume volume;
SdFile root;
好像有问题啊！