Develop Apps for Embedded Android
Networking
Class 1: A Basic4Android Wireless Digital I/O App
01/13/2014
Fred Eady
A Basic4Android Wireless Digital I/O App
AGENDA
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Basic4Android Serial Library
Code a Simple Bluetooth Engine
Setup and Code the Remote Device
Basic4Android RandomAccessFile Library
Code a Data Communications Activity
Combine the Simple Bluetooth Engine
with a Communications Activity to
Produce a Remote Control App
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A Basic4Android Wireless Digital I/O App
Basic4Android Serial Library
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Allows Communication with Bluetooth Devices
Functionality Based on RFCOMM
Usage Based on the Serial Object Properties
Allows Administration of the Bluetooth Adapter
Using the BluetoothAdmin Object
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A Basic4Android Wireless Digital I/O App
Code a Simple Bluetooth Engine
Step 1: Declare the Global Variables
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A Basic4Android Wireless Digital I/O App
Code a Simple Bluetooth Engine
Step 2: Code the bluAdmin / bluSPP Object Initialization
Step 3: Write Code to Load Layout the File simpleEngine
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A Basic4Android Wireless Digital I/O App
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A Basic4Android Wireless Digital I/O App
Code a Simple Bluetooth Engine
Step 4: Write the Button Event Code
The btnScan_Click subroutine shell
was created by employing the
services of the Abstract Designer’s
Generate Members function.
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A Basic4Android Wireless Digital I/O App
Code a Simple Bluetooth Engine
Step 5: Write the Bluetooth Administration Code
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A Basic4Android Wireless Digital I/O App
Code a Simple Bluetooth Engine
Step 6: Write the Device Discovery Code
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A Basic4Android Wireless Digital I/O App
Code a Simple Bluetooth Engine
Step 7: Write the Device Selection/Connection Code
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A Basic4Android Wireless Digital I/O App
Code a Simple Bluetooth Engine
Step 8: Test Our Simple Bluetooth App
Attempt to connect to EDTPBLU.
1234 and CONNECTED
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A Basic4Android Wireless Digital I/O App
Setup and Code the Remote Device
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A Basic4Android Wireless Digital I/O App
Setup and Code the Remote Device
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A Basic4Android Wireless Digital I/O App
Setup and Code the Remote Device
PIC32MX Atomic Port I/O Operations
 TRISxSET - TRISxCLR
 PORTxSET – PORTxCLR - PORTxINV
 LATxSET – LATxCLR – LATxINV
TRISACLR = 0x0001
TRISASET = 0x0001
RA0 = OUTPUT
RA0 = INPUT
LATASET = 0x0001
LATAINV = 0x0001
RA0 = 1
RA0 = 0
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A Basic4Android Wireless Digital I/O App
Setup and Code the Remote Device
Step 1: Define the WF32 LEDs 5 and 6.
Step 2: Code the LED Command Handler.
TRISFCLR = 0x0001; //WF32 RF0 = OUTPUT - LED5
TRISGCLR = 0x0040; //WF32 RG6 = OUTPUT - LED6
if(CharInQueue()) //print received character
This code is added to the main
{
function of the EDTP Embedded
biteIn = recvchar();
Bluetooth Driver.
switch(biteIn)
{
case 0x35:
LATFINV = 0x0001; //LED5
break;
case 0x36:
LATGINV = 0x0040; //LED6
break;
}
}
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A Basic4Android Wireless Digital I/O App
Basic4Android RandomAccessFile Library
 Bluetooth Usage Based on the AsyncStreams
Object Properties
 Allows Reading and Writing to I/O Streams
Without Blocking the Main Thread
 Facilitates Easy Movement of Any Amount of
Data
 Easily Transports Files, Arrays and Objects
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A Basic4Android Wireless Digital I/O App
Code a Data Communications Activity
Step 1: Declare the Global Variables
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A Basic4Android Wireless Digital I/O App
Code a Data Communications Activity
Step 2: Code the Layout Sequence and “Pipe” Initialization.
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A Basic4Android Wireless Digital I/O App
Code a Data Communications Activity
Step 3: Code the Button Event Handlers
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A Basic4Android Wireless Digital I/O App
A Bluetooth Remote Control App
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A Basic4Android Wireless Digital I/O App
Day 1 Topic Review
 We Used BluetoothAdmin and Serial
Objects to Spawn a Bare Bones Bluetooth
Engine.
 We Used a Digilent WF32 to Create an
Embedded Bluetooth-Capable Device.
 We Attached an AsyncStreams-Based
Basic4Android Module to Our Simple
Bluetooth Engine and Built a Useful
Android App.
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