求助！apm2.5 mega2560连sd卡实验
本帖最后由 慕翌光君 于 2013-4-1 14:51 编辑使用的工具是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...
// Quick hardware test
#include <SdFat.h>
// Test with reduced SPI speed for breadboards.
// Change spiSpeed to SPI_FULL_SPEED for better performance
// Use SPI_QUARTER_SPEED for even slower SPI bus speed
const uint8_t spiSpeed = SPI_HALF_SPEED;
//------------------------------------------------------------------------------
// Normally SdFat is used in applications in place
// of Sd2Card, SdVolume, and SdFile for root.
Sd2Card card;
SdVolume volume;
SdFile root;
// Serial streams
ArduinoOutStream cout(Serial);
// input buffer for line
char cinBuf;
ArduinoInStream cin(Serial, cinBuf, sizeof(cinBuf));
// SD card chip select
int chipSelect;
void cardOrSpeed() {
cout << pstr(
"Try another SD card or reduce the SPI bus speed.\n"
"The current SPI speed is: ");
uint8_t divisor = 1;
for (uint8_t i = 0; i < spiSpeed; i++) divisor *= 2;
cout << F_CPU * 0.5e-6 / divisor << pstr(" MHz\n");
cout << pstr("Edit spiSpeed in this sketch to change it.\n");
}
void reformatMsg() {
cout << pstr("Try reformatting the card.For best results use\n");
cout << pstr("the SdFormatter sketch in SdFat/examples or download\n");
cout << pstr("and use SDFormatter from www.sdcard.org/consumer.\n");
}
void setup() {
Serial.begin(9600);
while (!Serial) {}// wait for Leonardo
cout << pstr(
"\nSD chip select is the key hardware option.\n"
"Common values are:\n"
"Arduino Ethernet shield, pin 4\n"
"Sparkfun SD shield, pin 8\n"
"Adafruit SD shields and modules, pin 10\n");
}
bool firstTry = true;
void loop() {
// read any existing Serial data
while (Serial.read() >= 0) {}
if (!firstTry) cout << pstr("\nRestarting\n");
firstTry = false;
cout << pstr("\nEnter the chip select pin number: ");
cin.readline();
if (cin >> chipSelect) {
cout << chipSelect << endl;
} else {
cout << pstr("\nInvalid pin number\n");
return;
}
if (!card.init(spiSpeed, chipSelect)) {
cout << pstr(
"\nSD initialization failed.\n"
"Do not reformat the card!\n"
"Is the card correctly inserted?\n"
"Is chipSelect set to the correct value?\n"
"Is there a wiring/soldering problem?\n");
cout << pstr("errorCode: ") << hex << showbase << int(card.errorCode());
cout << pstr(", errorData: ") << int(card.errorData());
cout << dec << noshowbase << endl;
return;
}
cout << pstr("\nCard successfully initialized.\n");
cout << endl;
uint32_t size = card.cardSize();
if (size == 0) {
cout << pstr("Can't determine the card size.\n");
cardOrSpeed();
return;
}
uint32_t sizeMB = 0.000512 * size + 0.5;
cout << pstr("Card size: ") << sizeMB;
cout << pstr(" MB (MB = 1,000,000 bytes)\n");
cout << endl;
if (!volume.init(&card)) {
if (card.errorCode()) {
cout << pstr("Can't read the card.\n");
cardOrSpeed();
} else {
cout << pstr("Can't find a valid FAT16/FAT32 partition.\n");
reformatMsg();
}
return;
}
cout << pstr("Volume is FAT") << int(volume.fatType());
cout << pstr(", Cluster size (bytes): ") << 512L * volume.blocksPerCluster();
cout << endl << endl;
root.close();
if (!root.openRoot(&volume)) {
cout << pstr("Can't open root directory.\n");
reformatMsg();
return;
}
cout << pstr("Files found (name date time size):\n");
root.ls(LS_R | LS_DATE | LS_SIZE);
if ((sizeMB > 1100 && volume.blocksPerCluster() < 64)
|| (sizeMB < 2200 && volume.fatType() == 32)) {
cout << pstr("\nThis card should be reformatted for best performance.\n");
cout << pstr("Use a cluster size of 32 KB for cards larger than 1 GB.\n");
cout << pstr("Only cards larger than 2 GB should be formatted FAT32.\n");
reformatMsg();
return;
}
// read any existing Serial data
while (Serial.read() >= 0) {}
cout << pstr("\nSuccess!Type any character to restart.\n");
while (Serial.read() < 0) {}
}
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! 代码已贴出~~~求指导~~ 这是APM2.5 Mega2560的原理图 本帖最后由 慕翌光君 于 2013-4-2 22:18 编辑
连接图~~~~~ 没有人用过APM2.5 Mega2560么？~~~~ 有 2.5的 .sch吗？或者知道去哪里找吗？谢谢了！ Sd2Card card;
SdVolume volume;
SdFile root;
好像有问题啊！
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