用MANGO II 做MP3时候程序的问题
本帖最后由 Sand_man 于 2015-2-15 00:07 编辑（原教程链接:http://www.geek-workshop.com/thread-2611-1-1.html）
基本都是按照这个做的，因为是小白中的小白←←
除了用了一个v4.2的sd card shield扩展模块替代了双排长针和pin线做的简易读卡器（X宝seeed官店购得）
问题出现在导入程序的时候，
下面引用IDE的错误报告:
MostFunctionDemo.ino:28:27: fatal error: SimpleSDAudio.h: No such file or directory
compilation terminated.
编译有误。
尽管我看得懂英文，
但是这个“路径不存在”的问题也是很蛋特ng，因为这个文件尼玛就在我的
E:\Arduino\IDE\libraries\SimpleSDAudio
目录下面......
最后，方便各位大神，附上程序：
/*
Simple SD Audio example, shows the usage of most functions
via terminal at serial communication port.
This example shows how to use the SimpleSDAudio library for audio playback.
You need:
- An Arduino with ATmega168/ATmega368 or better
- An SD-Card connected to Arduinos SPI port (many shields will do)
-> copy some converted audio files on freshly formated SD card into root folder
- A passive loudspeaker and resistor or better: active speakers (then stereo output will be possible)
Audio signal output is at the following pin:
- Arduino with ATmega168/328 (many non-mega Arduinos): Pin 9
- Arduino with ATmega1280/2560 (many mega Arduinos) : Pin 44
Using passive speaker:
Audio-Pin --- -- ---- Speaker ---- GND
Using amplifier / active speaker / line-in etc.:
Audio-Pin --||------------------+-------- GND
100nF capacitor to amp
See SimpleSDAudio.h or our website for more information:
http://www.hackerspace-ffm.de/wiki/index.php?title=SimpleSDAudio
created29 Jun 2012 by Lutz Lisseck
*/
#include <SimpleSDAudio.h>
// Callback target, prints output to serial
void DirCallback(char *buf) {
Serial.println(buf);
}
char AudioFileName;
// Create static buffer
#define BIGBUFSIZE (2*512) // bigger than 2*512 is often only possible on Arduino megas!
uint8_t bigbuf;
// helper function to determine free ram at runtime
int freeRam () {
extern int __heap_start, *__brkval;
int v;
return (int) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval);
}
void setup()
{
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
Serial.print(F("Free Ram: "));
Serial.println(freeRam());
// Setting the buffer manually for more flexibility
SdPlay.setWorkBuffer(bigbuf, BIGBUFSIZE);
Serial.print(F("\nInitializing SimpleSDAudio V" SSDA_VERSIONSTRING " ..."));
// If your SD card CS-Pin is not at Pin 4, enable and adapt the following line:
//SdPlay.setSDCSPin(10);
// Select between SSDA_MODE_FULLRATE or SSDA_MODE_HALFRATE (62.5kHz or 31.25kHz)
// and the output modes SSDA_MODE_MONO_BRIDGE, SSDA_MODE_MONO or SSDA_MODE_STEREO
if (!SdPlay.init(SSDA_MODE_FULLRATE | SSDA_MODE_MONO)) {
Serial.println(F("initialization failed. Things to check:"));
Serial.println(F("* is a card is inserted?"));
Serial.println(F("* Is your wiring correct?"));
Serial.println(F("* maybe you need to change the chipSelect pin to match your shield or module?"));
Serial.print(F("Error code: "));
Serial.println(SdPlay.getLastError());
while(1);
} else {
Serial.println(F("Wiring is correct and a card is present."));
}
}
void loop(void) {
uint8_t count=0, c, flag;
Serial.println(F("Files on card:"));
SdPlay.dir(&DirCallback);
ReEnter:
count = 0;
Serial.println(F("\r\nEnter filename (send newline after input):"));
do {
while(!Serial.available()) ;
c = Serial.read();
if(c > ' ') AudioFileName = c;
} while((c != 0x0d) && (c != 0x0a) && (count < 14));
AudioFileName = 0;
Serial.print(F("Looking for file... "));
if(!SdPlay.setFile(AudioFileName)) {
Serial.println(F(" not found on card! Error code: "));
Serial.println(SdPlay.getLastError());
goto ReEnter;
} else {
Serial.println(F("found."));
}
Serial.println(F("Press s for stop, p for play, h for pause, f to select new file, d for deinit, v to view status."));
flag = 1;
while(flag) {
SdPlay.worker();
if(Serial.available()) {
c = Serial.read();
switch(c) {
case 's':
SdPlay.stop();
Serial.println(F("Stopped."));
break;
case 'p':
SdPlay.play();
Serial.println(F("Play."));
break;
case 'h':
SdPlay.pause();
Serial.println(F("Pause."));
break;
case 'd':
SdPlay.deInit();
Serial.println(F("SdPlay deinitialized. You can now safely remove card. System halted."));
while(1) ;
break;
case 'f':
flag = 0;
break;
case 'v':
Serial.print(F("Status: isStopped="));
Serial.print(SdPlay.isStopped());
Serial.print(F(", isPlaying="));
Serial.print(SdPlay.isPlaying());
Serial.print(F(", isPaused="));
Serial.print(SdPlay.isPaused());
Serial.print(F(", isUnderrunOccured="));
Serial.print(SdPlay.isUnderrunOccured());
Serial.print(F(", getLastError="));
Serial.println(SdPlay.getLastError());
Serial.print(F("Free RAM: "));
Serial.println(freeRam());
break;
}
}
}
}
我反正觉得是#include <SimpleSDAudio.h>有问题。。。。 你好像应该用这个方式来添加库，另外，你自己导入的库应该位于 C:\Users\youname\Documents\arduino\libraries\ 下面而不是你放的那个位置。
应该是库没有下载并放到指定位置
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