arduino code 'else without previous if' and there is a previous if statement
Here is my code for dfplayer mini
#include "Arduino.h"
#include "SoftwareSerial.h"
#include "DFRobotDFPlayerMini.h"
long randomNumber;
int bell = 6;
int val = 0;
SoftwareSerial mySoftwareSerial(10, 11); // RX, TX
DFRobotDFPlayerMini myDFPlayer;
void printDetail(uint8_t type, int value);
void setup()
{
pinMode(bell, INPUT);
randomSeed(analogRead(A0));
mySoftwareSerial.begin(9600);
Serial.begin(115200);
Serial.println();
Serial.println(F("DFRobot DFPlayer Mini Demo"));
Serial.println(F("Initializing DFPlayer ... (May take 3~5 seconds)"));
if (!myDFPlayer.begin(mySoftwareSerial)) { //Use softwareSerial to communicate with mp3.
Serial.println(F("Unable to begin:"));
Serial.println(F("1.Please recheck the connection!"));
Serial.println(F("2.Please insert the SD card!"));
while(true);
}
Serial.println(F("DFPlayer Mini online."));
myDFPlayer.setTimeOut(500); //Set serial communictaion time out 500ms
//----Set volume----
myDFPlayer.volume(10); //Set volume value (0~30).
myDFPlayer.volumeUp(); //Volume Up
myDFPlayer.volumeDown(); //Volume Down
//----Set different EQ----
myDFPlayer.EQ(DFPLAYER_EQ_NORMAL);
// myDFPlayer.EQ(DFPLAYER_EQ_POP);
// myDFPlayer.EQ(DFPLAYER_EQ_ROCK);
// myDFPlayer.EQ(DFPLAYER_EQ_JAZZ);
// myDFPlayer.EQ(DFPLAYER_EQ_CLASSIC);
// myDFPlayer.EQ(DFPLAYER_EQ_BASS);
//----Set device we use SD as default----
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_U_DISK);
myDFPlayer.outputDevice(DFPLAYER_DEVICE_SD);
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_AUX);
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_SLEEP);
// myDFPlayer.outputDevice(DFPLAYER_DEVICE_FLASH);
//----Mp3 control----
// myDFPlayer.sleep(); //sleep
// myDFPlayer.reset(); //Reset the module
// myDFPlayer.enableDAC(); //Enable On-chip DAC
// myDFPlayer.disableDAC(); //Disable On-chip DAC
// myDFPlayer.outputSetting(true, 15); //output setting, enable the output and set the gain to 15
//----Mp3 play----
/* myDFPlayer.next(); //Play next mp3
delay(1000);
myDFPlayer.previous(); //Play previous mp3
delay(1000);
myDFPlayer.play(1); //Play the first mp3
delay(1000);
myDFPlayer.loop(1); //Loop the first mp3
delay(1000);
myDFPlayer.pause(); //pause the mp3
delay(1000);
myDFPlayer.start(); //start the mp3 from the pause
delay(1000);
myDFPlayer.playFolder(15, 4); //play specific mp3 in SD:/15/004.mp3; Folder Name(1~99); File Name(1~255)
delay(1000);
myDFPlayer.enableLoopAll(); //loop all mp3 files.
delay(1000);
myDFPlayer.disableLoopAll(); //stop loop all mp3 files.
delay(1000);
myDFPlayer.playMp3Folder(4); //play specific mp3 in SD:/MP3/0004.mp3; File Name(0~65535)
delay(1000);
myDFPlayer.advertise(3); //advertise specific mp3 in SD:/ADVERT/0003.mp3; File Name(0~65535)
delay(1000);
myDFPlayer.stopAdvertise(); //stop advertise
delay(1000);
myDFPlayer.playLargeFolder(2, 999); //play specific mp3 in SD:/02/004.mp3; Folder Name(1~10); File Name(1~1000)
delay(1000);
myDFPlayer.loopFolder(5); //loop all mp3 files in folder SD:/05.
delay(1000);
myDFPlayer.randomAll(); //Random play all the mp3.
delay(1000);
myDFPlayer.enableLoop(); //enable loop.
delay(1000);
myDFPlayer.disableLoop(); //disable loop.
delay(1000);
*/
//----Read imformation----
Serial.println(myDFPlayer.readState()); //read mp3 state
Serial.println(myDFPlayer.readVolume()); //read current volume
Serial.println(myDFPlayer.readEQ()); //read EQ setting
Serial.println(myDFPlayer.readFileCounts()); //read all file counts in SD card
Serial.println(myDFPlayer.readCurrentFileNumber()); //read current play file number
Serial.println(myDFPlayer.readFileCountsInFolder(3)); //read fill counts in folder SD:/03
}
void loop( )
{val = digitalRead(bell);
randomNumber = random(2,9);
int inByte = randomNumber;
{ if(val == 1);
{ switch (inByte) {
case '2':
myDFPlayer.playMp3Folder(1);
Serial.println(F("1"));
break;
case '3':
myDFPlayer.playMp3Folder(2);
Serial.println(F("2"));
break;
case '4':
myDFPlayer.playMp3Folder(3);
Serial.println(F("3"));
break;
case '5':
myDFPlayer.playMp3Folder(4);
Serial.println(F("4"));
break;
case '6':
myDFPlayer.playMp3Folder(5);
Serial.println(F("5"));
break;
case '7':
myDFPlayer.playMp3Folder(6);
Serial.println(F("6"));
break;
case '8':
myDFPlayer.playMp3Folder(7);
Serial.println(F("7"));
break;
case '9':
myDFPlayer.playMp3Folder(8);
Serial.println(F("8"));
break;
default:break;
}
else{myDFPlayer.reset();} // here is the else without if
}}
Discussions
1 year ago
Syntax: check around the if statement at the start of your loop()