/*

File: EADSessionTransferViewController.m

Abstract: n/a

Version: 1.1

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*/

#import "EADSessionTransferViewController.h"

#import "EADSessionController.h"

@implementation EADSessionTransferViewController

@synthesize

receivedBytesLabel = _receivedBytesLabel,

stringToSendTextField = _stringToSendTextField,

hexToSendTextField = _hexToSendTextField;

// send test string to the accessory

- (IBAction)sendString:(id)sender;

{

if ([_stringToSendTextField isFirstResponder]) {

[_stringToSendTextField resignFirstResponder];

}

const char *buf = [[_stringToSendTextField text] UTF8String];

if (buf)

{

uint32_t len = strlen(buf) + 1;

[[EADSessionController sharedController] writeData:[NSData dataWithBytes:buf length:len]];

}

}

// Interpret a UITextField's string at a sequence of hex bytes and send those bytes to the accessory

- (IBAction)sendHex:(id)sender;

{

if ([_hexToSendTextField isFirstResponder]) {

[_hexToSendTextField resignFirstResponder];

}

const char *buf = [[_hexToSendTextField text] UTF8String];

NSMutableData *data = [NSMutableData data];

if (buf)

{

uint32_t len = strlen(buf);

char singleNumberString[3] = {'\0', '\0', '\0'};

uint32_t singleNumber = 0;

for(uint32_t i = 0 ; i < len; i+=2)

{

if ( ((i+1) < len) && isxdigit(buf[i]) && (isxdigit(buf[i+1])) )

{

singleNumberString[0] = buf[i];

singleNumberString[1] = buf[i + 1];

sscanf(singleNumberString, "%x", &singleNumber);

uint8_t tmp = (uint8_t)(singleNumber & 0x000000FF);

[data appendBytes:(void *)(&tmp) length:1];

}

else

{

break;

}

}

[[EADSessionController sharedController] writeData:data];

}

}

// send 10K of data to the accessory.

- (IBAction)send10K:(id)sender

{

#define STRESS_TEST_BYTE_COUNT 10000

uint8_t buf[STRESS_TEST_BYTE_COUNT];

for(int i = 0; i < STRESS_TEST_BYTE_COUNT; i++) {

buf[i] = (i & 0xFF); // fill buf with incrementing bytes;

}

[[EADSessionController sharedController] writeData:[NSData dataWithBytes:buf length:STRESS_TEST_BYTE_COUNT]];

}

#pragma mark UIViewController

- (void)viewWillAppear:(BOOL)animated

{

// watch for the accessory being disconnected

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_accessoryDidDisconnect:) name:EAAccessoryDidDisconnectNotification object:nil];

// watch for received data from the accessory

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(_sessionDataReceived:) name:EADSessionDataReceivedNotification object:nil];

EADSessionController *sessionController = [EADSessionController sharedController];

_accessory = [[sessionController accessory] retain];

[self setTitle:[sessionController protocolString]];

[sessionController openSession];

}

- (void)viewWillDisappear:(BOOL)animated

{

// remove the observers

[[NSNotificationCenter defaultCenter] removeObserver:self name:EAAccessoryDidConnectNotification object:nil];

[[NSNotificationCenter defaultCenter] removeObserver:self name:EADSessionDataReceivedNotification object:nil];

EADSessionController *sessionController = [EADSessionController sharedController];

[sessionController closeSession];

[_accessory release];

_accessory = nil;

}

- (void)viewDidUnload

{

[super viewDidUnload];

self.receivedBytesLabel = nil;

self.stringToSendTextField = nil;

self.hexToSendTextField = nil;

}

#pragma mark UITextFieldDelegate

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

[textField resignFirstResponder];

return YES;

}

#pragma mark Internal

- (void)_accessoryDidDisconnect:(NSNotification *)notification

{

if ([[self navigationController] topViewController] == self)

{

EAAccessory *disconnectedAccessory = [[notification userInfo] objectForKey:EAAccessoryKey];

if ([disconnectedAccessory connectionID] == [_accessory connectionID])

{

[[self navigationController] popViewControllerAnimated:YES];

}

}

}

// Data was received from the accessory, real apps should do something with this data but currently:

// 1. bytes counter is incremented

// 2. bytes are read from the session controller and thrown away

- (void)_sessionDataReceived:(NSNotification *)notification

{

EADSessionController *sessionController = (EADSessionController *)[notification object];

uint32_t bytesAvailable = 0;

while ((bytesAvailable = [sessionController readBytesAvailable]) > 0) {

NSData *data = [sessionController readData:bytesAvailable];

if (data) {

_totalBytesRead += bytesAvailable;

}

}

[_receivedBytesLabel setText:[NSString stringWithFormat:@"Bytes Received from Session: %d", _totalBytesRead]];

}

@end