How to Arduino Mega ADK & Android tab

Projects General Guidance
1

Hi,

I want to use my android tab as secundary display (i'm already using a glcd) to print the serial data on.
There are some tutorials about bluetooth, but none about using the usb host interface.
Can someone please help me?

Tutorials, examples, tips?

Thanks

2

You might want to look at the Android Communicator app (https://play.google.com/store/apps/details?id=com.primavera.arduino.listener&hl=en).

For more advanced usage, look at the Android Commander app (http://anettosoftware.co.uk/ac.php).

3

Thanks!

I allready had those apps installed, but that's not what i need.

In my arduino sketch i have some values (receiving via UDP) that are now showing on my GLCD. there's a little graph showing also.

I'm searching for a way to display the same values (and the graph if possible) on my Android tablet using the mega adk usb host interface. Like using my tablet as a GLCD.

4

Is this thread of any use: Arduino Usb Android Display - Exhibition / Gallery - Arduino Forum?

Martin.

5

thnx,

I've been testing a lot, and i've found a nice tutorial. now i still have some questions.

code from android:

private static final byte COMMAND_TEXT = 0xF;
	private static final byte TARGET_DEFAULT = 0xf;

	private TextView textView;
	private TextView textV;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		mUsbManager = UsbManager.getInstance(this);
		mPermissionIntent = PendingIntent.getBroadcast(this, 0, new Intent(
				ACTION_USB_PERMISSION), 0);
		IntentFilter filter = new IntentFilter(ACTION_USB_PERMISSION);
		filter.addAction(UsbManager.ACTION_USB_ACCESSORY_DETACHED);
		registerReceiver(mUsbReceiver, filter);

		setContentView(R.layout.main);
		textView = (TextView) findViewById(R.id.textView);
		textView = (TextView) findViewById(R.id.textView1); // -->> this is the textview i like to add in my project
	}

textView = (TextView) findViewById(R.id.textView1); // -->> this is the textview i like to add in my project

arduino "hello world sketch"

#include <Max3421e.h>
#include <Usb.h>
#include <AndroidAccessory.h>
#define ARRAY_SIZE 25
#define COMMAND_TEXT 0xF
#define TARGET_DEFAULT 0xF

#define COMMAND_TEXT 0xa
#define TARGET_DEFAULT 0xa

AndroidAccessory acc("Manufacturer", "Model", "Description",
"Version", "URI", "Serial");
char hello[ARRAY_SIZE] = {'H','e','l','l','o',' ',
'W','o','r','l','d',' ', 'f', 'r', 'o', 'm', ' ',
'A', 'r', 'd', 'u', 'i', 'n', 'o', '!'};
byte rcvmsg[255];
byte sntmsg[3 + ARRAY_SIZE];
void setup() {
Serial.begin(9600);
acc.begin();
}
void loop() {
if (acc.isConnected()) {
//read the sent text message into the byte array
//int len = acc.read(rcvmsg, sizeof(rcvmsg), 1);
//if (len > 0) {
if (rcvmsg[0] == COMMAND_TEXT) {
if (rcvmsg[1] == TARGET_DEFAULT){
//get the textLength from the checksum byte
byte textLength = rcvmsg[2];
int textEndIndex = 3 + textLength;
//print each character to the serial output
for(int x = 3; x < textEndIndex; x++) {
Serial.print((char)rcvmsg[x]);
delay(250);
}
Serial.println();
delay(250);
}
}
}
sntmsg[0] = COMMAND_TEXT;
sntmsg[1] = TARGET_DEFAULT;
sntmsg[2] = ARRAY_SIZE;
for(int x = 0; x < ARRAY_SIZE; x++) {
 54;
sntmsg[3 + x] = hello[x];
}
acc.write(sntmsg, 3 + ARRAY_SIZE); 

delay(250);
}
//}

how do i do this?
I've added the textview on my android app.
how do i send a second string from my android to the correct textview in android?

Thanks,

Chris